LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Single-Supply Operation:
Input Voltage Range Extends to Ground
Output Swings to Ground While Sinking
Current
D
Input Offset Voltage
150
V Max at 25
C for LT1013A
D
Offset Voltage Temperature Coefficient
2.5
V/
C Max for LT1013A
D
Input Offset Current
0.8 nA Max at 25
C for LT1013A
D
High Gain . . . 1.5 V/
V Min ( R
L
= 2 k
),
0.8 V/
V Min ( R
L
= 600 k
) for LT1013A
D
Low Supply Current . . . 0.5 mA Max at
T
A
= 25
C for LT1013A
D
Low Peak-to-Peak Noise Voltage
0.55
V Typ
D
Low Current Noise . . . 0.07 pA/
HZ Typ
description
The LT1013 is a dual precision operational
amplifier featuring low offset voltage temperature
coefficient, high gain, low supply current, and low
noise.
The LT1013 can be operated from a single 5-V
power supply; the common-mode input voltage
range includes ground, and the output can also
swing to within a few millivolts of ground.
Crossover distortion is eliminated. The LT1013
can be operated with both dual
15 -V and single
5 -V supplies.
The LT1013C and LT1013AC, and LT1013D are characterized for operation from 0
C to 70
C. The LT1013I and
LT1013AI, and LT1013DI are characterized for operation from 40
C to 105
C. The LT1013M and LT1013AM,
and LT1013DM are characterized for operation over the full military temperature range of 55
C to 125
C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright
1996, Texas Instruments Incorporated
1
2
3
4
8
7
6
5
1IN +
V
CC
2IN +
2IN
1IN
1OUT
V
CC +
2OUT
D PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
NC
2OUT
NC
2IN
NC
NC
1IN
NC
1IN +
NC
FK PACKAGE
(TOP VIEW)
NC
1OUT
NC
NC
NC
NC
NC
2IN+
CC
V
CC
V
1
2
3
4
8
7
6
5
1OUT
1IN
1IN +
V
CC
V
CC +
2OUT
2IN
2IN +
JG OR P PACKAGE
(TOP VIEW)
NC No internal connection
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
AVAILABLE OPTIONS
VIOmax
PACKAGED DEVICES
CHIP FORM
TA
VIOmax
AT 25
C
SMALL OUTLINE
(D)
CHIP CARRIER
(FK)
CERAMIC DIP
(JG)
PLASTIC DIP
(P)
CHIP FORM
(Y)
150
V
--
--
--
LT1013ACP
0
C to 70
C
300
V
--
--
--
LT1013CP
LT1013Y
800
V
LT1013DD
--
--
LT1013DP
150
V
--
--
--
LT1013AIP
40
C to 105
C
300
V
--
--
--
LT1013IP
--
800
V
LT1013DID
--
--
LT1013DIP
150
V
--
LT1013AMFK
--
LT1013AMP
55
C to 125
C
300
V
--
LT1013MFK
LT1013MJG
LT1013MP
--
800
V
LT1013DMD
--
LT1013DMJG
LT1013DMP
The D package is available taped and reeled. Add the suffix R to the device type (e.g., LT1013DDR).
L
T1013, L
T1013A, L
T1013D, L
T1013Y
DUAL
PRECISION OPERA
TIONAL
AMPLIFIERS
SLOS018B
MA
Y
1988 REVISED OCT
OBER
1996
POST
OFFICE BOX 655303 DALLAS,
TEXAS
75265
3
schematic (each amplifier)
OUT
600
J1
800
VCC
VCC +
IN
IN +
30
42 k
Q40
Q39
Q41
Q38
14 k
Q37
Q35
3.9 k
75 pF
5 k
5 k
2 k
1.3 k
2 k
Q24
Q23
Q34
21 pF
2.5 pF
2.4 k
18
Q26
Q33
Q25
Q30
Q32
Q15
Q14
Q16
Q13
Q6
Q5
9 k
9 k
1.6 k
1.6 k
1.6 k
100
1 k
Q3
Q4
400
400
Q1
Q21
Q22
Q2
Q12
Q29
Q11
Q9
Q7
Q8
10 pF
Q10
Q18
Q19
2 k
10 pF
Q27
Q28
4 pF
Q31
Q17
Q36
Q20
Component values are nominal.
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
LT1013Y chip information
This chip, when properly assembled, displays characteristics similar to the LT1013. Thermal compression or
ultrasonic bonding may be used on the doped-aluminum bonding pads. Chips may be mounted with conductive
epoxy or a gold-silicon preform.
BONDING PAD ASSIGNMENTS
CHIP THICKNESS: 15 TYPICAL
BONDING PADS: 4
4 MINIMUM
TJmax = 150
C
TOLERANCES ARE
10%.
ALL DIMENSIONS ARE IN MILS.
PIN (4) IS INTERNALLY CONNECTED
TO BACKSIDE OF CHIP.
+
1OUT
IN +
IN
VCC+
(8)
(3)
(2)
(1)
79
96
+
2OUT
2 IN +
2IN
(5)
(6)
(7)
(4)
VCC
(8)
(1)
(7)
(6)
(5)
(4)
(3)
(2)
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC +
(see Note 1)
22 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply voltage, V
CC
(see Note 1)
22 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage (see Note 2)
30 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(any input, see Note 1)
V
CC
5 V to V
CC+
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duration of short-circuit current at (or below) 25
C (see Note 3)
unlimited
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: LT1013C, LT1013AC, LT1013D
0
C to 70
C
. . . . . . . . . . . . . .
LT1013I, LT1013AI, LT1013DI
40
C to 105
C
. . . . . . . . . . . . . . .
LT1013M, LT1013AM, LT1013DM
55
C to 125
C
. . . . . . . . . .
Storage temperature range
65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds: D or P package
260
C
. . . . . . . . . . . . . . . . .
Case temperature for 60 seconds: FK package
260
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds: JG package
300
C
. . . . . . . . . . . . . . . . . . . .
NOTES:
1. All voltage values, except differential voltages, are with respect to the midpoint between VCC + and VCC .
2. Differential voltages are at IN+ with respect to IN .
3. The output may be shorted to either supply.
L
T1013, L
T1013A, L
T1013D, L
T1013Y
DUAL
PRECISION OPERA
TIONAL
AMPLIFIERS
SLOS018B
MA
Y
1988 REVISED OCT
OBER
1996
POST
OFFICE BOX 655303 DALLAS,
TEXAS
75265
5
electrical characteristics at specified free-air temperature, V
CC
=
15 V, V
IC
= 0 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA
LT1013C
LT1013AC
LT1013DC
UNIT
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIO
Input offset voltage
RS = 50
25
C
60
300
40
150
200
800
V
VIO
Input offset voltage
RS = 50
Full range
400
240
1000
V
VIO
Temperature coefficient of input
Full range
0 4
2 5
0 3
2
0 7
5
V/
C
VIO
offset voltage
Full range
0.4
2.5
0.3
2
0.7
5
V/
C
Long-term drift of input offset voltage
25
C
0.5
0.4
0.5
V/mo
IIO
Input offset current
25
C
0.2
1.5
0.15
0.8
0.2
1.5
nA
IIO
Input offset current
Full range
2.8
1.5
2.8
nA
IIB
Input bias current
25
C
15
30
12
20
15
30
nA
IIB
Input bias current
Full range
38
25
38
nA
15
15.3
15
15.3
15
15.3
25
C
to
to
to
to
to
to
VICR
Common mode input voltage range
13.5
13.8
13.5
13.8
13.5
13.8
V
VICR
Common-mode input voltage range
15
15
15
V
Full range
to
to
to
g
13
13
13
VOM
Maximum peak output voltage swing
RL = 2 k
25
C
12.5
14
13
14
12.5
14
V
VOM
Maximum peak output voltage swing
RL = 2 k
Full range
12
12.5
12
V
L
i
l diff
ti l
lt
VO =
10 V,
RL = 600
25
C
0.5
0.2
0.8
2.5
0.5
2
A VD
Large-signal differential voltage
amplification
VO
10 V
RL = 2 k
25
C
1.2
7
1.5
8
1.2
7
V/
V
am lification
VO =
10 V,
RL = 2 k
Full range
0.7
1
0.7
CMRR
Common mode rejection ratio
VIC = 15 V to 13.5 V
25
C
97
114
100
117
97
114
dB
CMRR
Common-mode rejection ratio
VIC = 14.9 V to 13 V
Full range
94
98
94
dB
kSVR
Supply-voltage rejection ratio
VCC =
2 V to
18 V
25
C
100
117
103
120
100
117
dB
kSVR
y
g
j
(
VCC /
VIO)
VCC + =
2 V to
18 V
Full range
97
101
97
dB
Channel separation
VO =
10 V,
RL = 2 k
25
C
120
137
123
140
120
137
dB
rid
Differential input resistance
25
C
70
300
100
400
70
300
M
ric
Common-mode input resistance
25
C
4
5
4
G
ICC
Supply current per amplifier
25
C
0.35
0.55
0.35
0.5
0.35
0.55
mA
ICC
Supply current per amplifier
Full range
0.7
0.55
0.6
mA
Full range is 0
C to 70
C.
All typical values are at TA = 25
C.
T
emp
l
ate
R
e
l
ease
D
ate:
7
11
94
L
T1013, L
T1013A, L
T1013D, L
T1013Y
DUAL
PRECISION OPERA
TIONAL
AMPLIFIERS
SLOS018B
MA
Y
1988 REVISED OCT
OBER
1996
6
POST
OFFICE BOX 655303 DALLAS,
TEXAS
75265
electrical characteristics at specified free-air temperature, V
CC +
= 5 V, V
CC
= 0, V
O
= 1.4 V, V
IC
= 0 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA
LT1013C
LT1013AC
LT1013DC
UNIT
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIO
Input offset voltage
RS = 50
25
C
90
450
60
250
250
950
V
VIO
Input offset voltage
RS = 50
Full range
570
350
1200
V
IIO
Input offset current
25
C
0.3
2
0.2
1.3
0.3
2
nA
IIO
Input offset current
Full range
6
3.5
6
nA
IIB
Input bias current
25
C
18
50
15
35
18
50
nA
IIB
Input bias current
Full range
90
55
90
nA
0
0.3
0
0.3
0
0.3
25
C
0
to
0.3
to
0
to
0.3
to
0
to
0.3
to
VICR
Common-mode input voltage
3.5
3.8
3.5
3.8
3.5
3.8
V
VICR
g
range
0
0
0
V
Full range
0
to
0
to
0
to
g
3
3
3
Output low,
No load
25
C
15
25
15
25
15
25
Output low,
25
C
5
10
5
10
5
10
mV
M
i
k
t
t
lt
,
RL = 600
to GND
Full range
13
13
13
mV
VOM
Maximum-peak output voltage
swing
Output low,
Isink = 1 mA
25
C
220
350
220
350
220
350
swing
Output high,
No load
25
C
4
4.4
4
4.4
4
4.4
Output high,
25
C
3.4
4
3.4
4
3.4
4
V
g ,
RL = 600
to GND
Full range
3.2
3.3
3.2
A VD
Large-signal differential
VO = 5 mV to 4 V
RL = 500
25
C
1
1
1
V/
V
A VD
g
g
voltage amplification
VO = 5 mV to 4 V, RL = 500
25
C
1
1
1
V/
V
ICC
Supply current per amplifier
25
C
0.32
0.5
0.31
0.45
0.32
0.5
mA
ICC
Supply current per amplifier
Full range
0.55
0.5
0.55
mA
Full range is 0
C to 70
C.
operating characteristics, V
CC
=
15 V, V
IC
= 0, T
A
= 25
C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SR
Slew rate
0.2
0.4
V/
s
V
Equivalent input noise voltage
f = 10 Hz
24
nV/
Hz
Vn
Equivalent input noise voltage
f = 1 kHz
22
nV/
Hz
VN(PP)
Peak-to-peak equivalent input noise voltage
f = 0.1 Hz to 10 Hz
0.55
V
In
Equivalent input noise current
f = 10 Hz
0.07
pA/
Hz
L
T1013, L
T1013A, L
T1013D, L
T1013Y
DUAL
PRECISION OPERA
TIONAL
AMPLIFIERS
SLOS018B
MA
Y
1988 REVISED OCT
OBER
1996
POST
OFFICE BOX 655303 DALLAS,
TEXAS
75265
7
electrical characteristics at specified free-air temperature, V
CC
=
15 V, V
IC
= 0 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA
LT1013I
LT1013AI
LT1013DI
UNIT
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIO
Input offset voltage
RS = 50
25
C
60
300
40
150
200
800
V
VIO
Input offset voltage
RS = 50
Full range
550
300
1000
V
VIO
Temperature coefficient of input
Full range
0 4
2 5
0 3
2
0 7
5
V/
C
VIO
offset voltage
Full range
0.4
2.5
0.3
2
0.7
5
V/
C
Long-term drift of input offset
25
C
0 5
0 4
0 5
V/mo
g
voltage
25
C
0.5
0.4
0.5
V/mo
IIO
Input offset current
25
C
0.2
1.5
0.15
0.8
0.2
1.5
nA
IIO
Input offset current
Full range
2.8
1.5
2.8
nA
IIB
Input bias current
25
C
15
30
12
20
15
30
nA
IIB
Input bias current
Full range
38
25
38
nA
15
15.3
15
15.3
15
15.3
25
C
to
to
to
to
to
to
VICR
Common mode input voltage range
13.5
13.8
13.5
13.8
13.5
13.8
V
VICR
Common-mode input voltage range
15
15
15
V
Full range
to
to
to
g
13
13
13
VOM
Maximum peak output voltage
RL = 2 k
25
C
12.5
14
13
14
12.5
14
V
VOM
g
swing
RL = 2 k
Full range
12
12.5
12
V
L
i
l diff
ti l
lt
VO =
10 V,
RL = 600
25
C
0.5
0.2
0.8
2.5
0.5
2
A VD
Large-signal differential voltage
amplification
VO =
10 V
RL = 2 k
25
C
1.2
7
1.5
8
1.2
7
V/
V
am lification
VO =
10 V,
RL = 2 k
Full range
0.7
1
0.7
CMRR
Common-mode
VIC = 15 V to 13.5 V
25
C
97
114
100
117
97
114
dB
CMRR
rejection ratio
VIC = 14.9 V to 13 V
Full range
94
97
94
dB
kSVR
Supply-voltage rejection ratio
VCC
=
2 V to
18 V
25
C
100
117
103
120
100
117
dB
kSVR
y
g
j
(
VCC /
VIO)
VCC
=
2 V to
18 V
Full range
97
101
97
dB
Channel separation
VO =
10 V,
RL = 2 k
25
C
120
137
123
140
120
137
dB
rid
Differential input resistance
25
C
70
300
100
400
70
300
M
ric
Common-mode input resistance
25
C
4
5
4
G
ICC
Supply current per amplifier
25
C
0.35
0.55
0.35
0.5
0.35
0.55
mA
ICC
Supply current per amplifier
Full range
0.7
0.55
0.6
mA
Full range is 40
C to 105
C.
All typical values are at TA = 25
C.
T
emp
l
ate
R
e
l
ease
D
ate:
7
11
94
L
T1013, L
T1013A, L
T1013D, L
T1013Y
DUAL
PRECISION OPERA
TIONAL
AMPLIFIERS
SLOS018B
MA
Y
1988 REVISED OCT
OBER
1996
8
POST
OFFICE BOX 655303 DALLAS,
TEXAS
75265
electrical characteristics at specified free-air temperature, V
CC +
= 5 V, V
CC
= 0, V
O
= 1.4 V, V
IC
= 0 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA
LT1013I
LT1013AI
LT1013DI
UNIT
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIO
Input offset voltage
RS = 50
25
C
90
450
60
250
250
950
V
VIO
Input offset voltage
RS = 50
Full range
570
350
1200
V
IIO
Input offset current
25
C
0.3
2
0.2
1.3
0.3
2
nA
IIO
Input offset current
Full range
6
3.5
6
nA
IIB
Input bias current
25
C
18
50
15
35
18
50
nA
IIB
Input bias current
Full range
90
55
90
nA
0
0.3
0
0.3
0
0.3
25
C
0
to
0.3
to
0
to
0.3
to
0
to
0.3
to
VICR
Common-mode input voltage
3.5
3.8
3.5
3.8
3.5
3.8
V
VICR
g
range
0
0
0
V
Full range
0
to
0
to
0
to
g
3
3
3
Output low,
No load
25
C
15
25
15
25
15
25
Output low,
25
C
5
10
5
10
5
10
mV
M
i
k
t
t
lt
,
RL = 600
to GND
Full range
13
13
13
mV
VOM
Maximum-peak output voltage
swing
Output low,
Isink = 1 mA
25
C
220
350
220
350
220
350
swing
Output high,
No load
25
C
4
4.4
4
4.4
4
4.4
Output high,
25
C
3.4
4
3.4
4
3.4
4
V
g ,
RL = 600
to GND
Full range
3.2
3.3
3.2
A VD
Large-signal differential
VO = 5 mV to 4 V
RL = 500
25
C
1
1
1
V/
V
A VD
g
g
voltage amplification
VO = 5 mV to 4 V, RL = 500
25
C
1
1
1
V/
V
ICC
Supply current per amplifier
25
C
0.32
0.5
0.31
0.45
0.32
0.5
mA
ICC
Supply current per amplifier
Full range
0.55
0.5
0.55
mA
Full range is 40
C to 105
C.
operating characteristics, V
CC
=
15 V, V
IC
= 0, T
A
= 25
C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SR
Slew rate
0.2
0.4
V/
s
V
Equivalent input noise voltage
f = 10 Hz
24
nV/
Hz
Vn
Equivalent input noise voltage
f = 1 kHz
22
nV/
Hz
VN(PP) Peak-to-peak equivalent input noise voltage
f = 0.1 Hz to 10 Hz
0.55
V
In
Equivalent input noise current
f = 10 Hz
0.07
pA/
Hz
L
T1013, L
T1013A, L
T1013D, L
T1013Y
DUAL
PRECISION OPERA
TIONAL
AMPLIFIERS
SLOS018B
MA
Y
1988 REVISED OCT
OBER
1996
POST
OFFICE BOX 655303 DALLAS,
TEXAS
75265
9
electrical characteristics at specified free-air temperature, V
CC
=
15 V, V
IC
= 0 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA
LT1013M
LT1013AM
LT1013DM
UNIT
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIO
Input offset voltage
RS = 50
25
C
60
300
40
150
200
800
V
VIO
Input offset voltage
RS = 50
Full range
550
300
1000
V
VIO
Temperature coefficient of input offset
Full range
0 5
2 5
0 4
2
0 5
2 5
V/
C
VIO
voltage
Full range
0.5
2.5
0.4
2
0.5
2.5
V/
C
Long-term drift of input offset voltage
25
C
0.5
0.4
0.5
V/mo
IIO
Input offset current
25
C
0.2
1.5
0.15
0.8
0.2
1.5
nA
IIO
Input offset current
Full range
5
2.5
5
nA
IIB
Input bias current
25
C
15
30
12
20
15
30
nA
IIB
Input bias current
Full range
45
30
45
nA
15
15.3
15
15.3
15
15.3
25
C
15
to
15.3
to
15
to
15.3
to
15
to
15.3
to
VICR
Common mode input voltage range
13.5
13.8
13.5
13.8
13.5
13.8
V
VICR
Common-mode input voltage range
14.9
14.9
14.9
V
Full range
14.9
to
14.9
to
14.9
to
g
13
13
13
VOM
Maximum peak output voltage swing
RL = 2 k
25
C
12.5
14
13
14
12.5
14
V
VOM
Maximum peak output voltage swing
RL = 2 k
Full range
11.5
12
11.5
V
L
i
l diff
ti l
lt
VO =
10 V,
RL = 600
25
C
0.5
2
0.8
2.5
0.5
2
A VD
Large-signal differential voltage
amplification
VO = + 10 V
RL = 2 k
25
C
1.2
7
1.5
8
1.2
7
V/
V
am lification
VO = + 10 V,
RL = 2 k
Full range
0.25
0.5
0.25
CMRR
Common mode rejection ratio
VIC = 15 V to 13.5 V
25
C
97
117
100
117
97
114
dB
CMRR
Common-mode rejection ratio
VIC = 14.9 V to 13 V
Full range
94
97
94
dB
kSVR
Supply-voltage rejection ratio
VCC
=
2 V to
18 V
25
C
100
117
103
120
100
117
dB
kSVR
y
g
j
(
VCC /
VIO)
VCC
=
2 V to
18 V
Full range
97
100
97
dB
Channel separation
VO =
10 V,
RL = 2 k
25
C
120
137
123
140
120
137
dB
rid
Differential input resistance
25
C
70
300
100
400
70
300
M
ric
Common-mode input resistance
25
C
4
5
4
G
ICC
Supply current per amplifier
25
C
0.35
0.55
0.35
0.5
0.35
0.55
mA
ICC
Supply current per amplifier
Full range
0.7
0.6
0.7
mA
On products compliant to MIL-PRF-38535, Class B, this parameter is not production tested.
Full range is 55
C to 125
C.
All typical values are at TA = 25
C.
T
emp
l
ate
R
e
l
ease
D
ate:
7
11
94
L
T1013, L
T1013A, L
T1013D, L
T1013Y
DUAL
PRECISION OPERA
TIONAL
AMPLIFIERS
SLOS018B
MA
Y
1988 REVISED OCT
OBER
1996
10
POST
OFFICE BOX 655303 DALLAS,
TEXAS
75265
electrical characteristics at specified free-air temperature, V
CC +
= 5 V, V
CC
= 0, V
O
= 1.4 V, V
IC
= 0 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA
LT1013M
LT1013AM
LT1013DM
UNIT
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
RS = 50
25
C
90
450
60
250
250
950
VIO
Input offset voltage
RS = 50
Full range
400
1500
250
900
800
2000
V
RS = 50
,
VIC = 0.1 V
125
C
200
750
120
450
560
1200
IIO
Input offset current
25
C
0.3
2
0.2
1.3
0.3
2
nA
IIO
Input offset current
Full range
10
6
10
nA
IIB
Input bias current
25
C
18
50
15
35
18
50
nA
IIB
Input bias current
Full range
120
80
120
nA
0
0.3
0
0.3
0
0.3
25
C
0
to
0.3
to
0
to
0.3
to
0
to
0.3
to
VICR
Common-mode input voltage
3.5
3.8
3.5
3.8
3.5
3.8
V
VICR
g
range
0
0
0
V
Full range
0
to
0
to
0
to
g
3
3
3
Output low,
No load
25
C
15
25
15
25
15
25
Output low,
25
C
5
10
5
10
5
10
mV
M
i
k
t
t
lt
,
RL = 600
to GND
Full range
18
15
18
mV
VOM
Maximum-peak output voltage
swing
Output low,
Isink = 1 mA
25
C
220
350
220
350
220
350
swing
Output high,
No load
25
C
4
4.4
4
4.4
4
4.4
Output high,
25
C
3.4
4
3.4
4
3.4
4
V/
V
g ,
RL = 600
to GND
Full range
3.1
3.2
3.1
A VD
Large-signal differential
VO = 5 mV to 4 V
RL = 500
25
C
1
1
1
A VD
g
g
voltage amplification
VO = 5 mV to 4 V, RL = 500
25
C
1
1
1
mA
ICC
Supply current per amplifier
25
C
0.32
0.5
0.31
0.45
0.32
0.5
mA
ICC
Supply current per amplifier
Full range
0.65
0.55
0.65
Full range is 55
C to 125
C.
operating characteristics, V
CC
=
15 V, V
IC
= 0, T
A
= 25
C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SR
Slew rate
0.2
0.4
V/
s
V
Equivalent input noise voltage
f = 10 Hz
24
nV/
Hz
Vn
Equivalent input noise voltage
f = 1 kHz
22
nV/
Hz
VN(PP) Peak-to-peak equivalent input noise voltage
f = 0.1 Hz to 10 Hz
0.55
V
In
Equivalent input noise current
f = 10 Hz
0.07
pA/
Hz
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics at V
CC +
= 5 V, V
CC
= 0, V
O
= 1.4 V, V
IC
= 0, T
A
= 25
C (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
LT1013Y
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIO
Input offset voltage
RS = 50
250
950
V
IIO
Input offset current
0.3
2
nA
IIB
Input bias current
18
50
nA
0
0.3
VICR
Common-mode input voltage range
0
to
0.3
to
V
ICR
g
g
3.5
3.8
Output low,
No load
15
25
Output low,
RL = 600
to GND
5
10
mV
VOM
Maximum peak output voltage swing
Output low,
Isink = 1 mA
220
350
Output high,
No load
4
4.4
V
Output high,
RL = 600
to GND
3.4
4
V
AVD
Large-signal differential voltage amplification
VO = 5 mV to 4 V, RL = 500
1
V/
V
ICC
Supply current per amplifier
0.32
0.5
mA
electrical characteristics at V
CC +
=
15 V, V
IC
= 0, T
A
= 25
C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
LT1013Y
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIO
Input offset voltage
RS = 50
200
800
V
Long-term drift of input offset voltage
0.5
V/mo
IIO
Input offset current
0.2
1.5
nA
IIB
Input bias current
15
30
nA
15
15.3
VICR
Common-mode input voltage range
15
to
15.3
to
V
ICR
g
g
13.5
1 3.8
VOM
Maximum peak output voltage swing
RL = 2 k
12.5
14
V
AVD
Large signal differential voltage amplification
VO =
10 V
RL = 600
0.5
2
V/
V
AVD
Large-signal differential voltage amplification
VO =
10 V,
RL = 2
1.2
7
dB
CMRR
Common-mode rejection ratio
VIC = 15 V to 13.5 V
97
114
dB
kSVR
Supply-voltage rejection ratio (
VCC /
VIO)
VCC
=
2 V to
18 V
100
117
dB
Channel separation
VO =
10 V,
RL = 2
120
137
dB
rid
Differential input resistance
70
300
M
ric
Common-mode input resistance
4
G
ICC
Supply current per amplifier
0.35
0.55
mA
operating characteristics, V
CC
=
15 V, V
IC
= 0, T
A
= 25
C
PARAMETER
TEST CONDITIONS
LT1013Y
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SR
Slew rate
0.2
0.4
V/
s
V
Equivalent input noise voltage
f = 10 Hz
24
nV/
Hz
Vn
Equivalent input noise voltage
f = 1 kHz
22
nV/
Hz
VN(PP) Peak-to-peak equivalent input noise voltage
f = 0.1 Hz to 10 Hz
0.55
V
In
Equivalent input noise current
f = 10 Hz
0.07
pA/
Hz
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
VIO
Input offset voltage
vs Source resistance
1
VIO
Input offset voltage
vs Temperature
2
VIO
Change in input offset voltage
vs Time
3
IIO
Input offset current
vs Temperature
4
IIB
Input bias current
vs Temperature
5
VIC
Common-mode input voltage
vs Input bias current
6
AVD
Differential voltage amplification
vs Load resistance
7, 8
AVD
Differential voltage amplification
vs Frequency
,
9, 10
Channel separation
vs Frequency
11
Output saturation voltage
vs Temperature
12
CMRR
Common-mode rejection ratio
vs Frequency
13
kSVR
Supply voltage rejection ratio
vs Frequency
14
ICC
Supply current
vs Temperature
15
IOS
Short-circuit output current
vs Time
16
Vn
Equivalent input noise voltage
vs Frequency
17
In
Equivalent input noise current
vs Frequency
17
Vn(PP)
Peak-to-peak input noise voltage
vs Time
18
Pulse response
Small signal
19, 21
Pulse response
g
Large signal
,
20, 22, 23
Phase shift
vs Frequency
9
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
|VCC
| Supply Voltage V
10 k
INPUT OFFSET VOLTAGE
vs
SUPPLY VOLTAGE
VIO Input Offset V
oltage mV
1 k
3 k
30 k 100 k 300 k 1 M
3 M
10 M
0.01
0.1
1
10
RS
RS
+
VCC+ = 5 V, VCC = 0
TA = 55
C to 125
C
VCC + = 5 V
VCC = 0
TA = 25
C
VCC
=
15V
TA = 25
C
V
IO
VCC
=
15 V
TA = 55
C to 125
C
Figure 1
Figure 2
TA Free-Air Temperature
C
200
125
100
75
50
25
0
150
100
50
0
50
100
150
200
250
50
25
INPUT OFFSET VOLTAGE
OF REPRESENTITIVE UNITS
vs
FREE-AIR TEMPERATURE
VIO Input Offset V
oltage uV
V
CC
=
15 V
250
V
IO
V
Figure 3
3
2
1
0
0
1
2
3
4
t Time After Power-On min
WARM-UP CHANGE
IN INPUT OFFSET VOLTAGE
vs
TIME AFTER POWER-ON
5
4
5
JG Package
VCC
=
15 V
TA = 25
C
XVIO Change in Input Offset V
oltage uV
V
IO
V
Figure 4
0.2
0
0
25
50
75
100
IIO Input Offset Current nA
INPUT OFFSET CURRENT
vs
FREE-AIR TEMPERATURE
1
0.4
125
0.6
0.8
I IO
VIC = 0
VCC
=
2.5 V
VCC+ = 5 V, VCC = 0
VCC
=
15 V
TA Free-Air Temperature
C
50
25
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 5
TA Free-Air Temperature
C
IIB Input Bias Current nA
INPUT BIAS CURRENT
vs
FREE-AIR TEMPERATURE
I IB
50
25
0
25
50
75
100
125
0
5
10
15
20
25
30
VCC
= 5 V, VCC = 0
VCC
=
2.5 V
VCC
=
15 V
VIC = 0
Figure 6
IIB Input Bias Current nA
0
VIC Common-Mode Input V
oltage V
COMMON-MODE INPUT VOLTAGE
vs
INPUT BIAS CURRENT
15
10
5
5
10
15
0
5
10
15
20
25
30
1
0
1
2
3
4
5
V
IC
TA = 25
C
VCC
=
15 V
(left scale)
VCC
= 5 V
VCC = 0
(right scale)
VIC Common-Mode Input V
oltage V
V
IC
RL Load Resistance
A
VD Differential V
oltage
Amplification
V/
DIFFERENTIAL VOLTAGE AMPLIFICATION
vs
LOAD RESISTANCE
100
400
1 k
4 k
10 k
A
VD
V
10
4
1
0.4
0.1
VCC
=
15 V
VO =
10 V
TA = 55
C
TA = 25
C
TA = 125
C
Figure 7
RL Load Resistance
DIFFERENTIAL VOLTAGE AMPLIFICATION
vs
LOAD RESISTANCE
100
400
1 k
4 k
10 k
VCC
= 5 V, VCC = 0
VO = 20 mV to 3.5 V
TA = 55
C
TA = 25
C
TA = 125
C
A
VD Differential V
oltage
Amplification
V/
A
VD
V
10
4
1
0.4
0.1
Figure 8
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
A
VD Differential V
oltage
Amplification dB
f Frequency MHz
0.01
0.3
1
3
10
240
220
200
180
160
140
120
100
80
0
10
25
DIFFERENTIAL VOLTAGE AMPLIFICATION
AND PHASE SHIFT
vs
FREQUENCY
AVD
VCC + = 5 V
VCC = 0
VIC = 0
CL = 100 pF
TA = 25
C
A
VD
20
15
5
VCC
=
15 V
VCC + = 5 V
VCC = 0
VCC
=
15 V
Phase Shift
10
5
15
Figure 9
60
20
0
20
100
120
DIFFERENTIAL VOLTAGE AMPLIFICATION
vs
FREQUENCY
140
80
40
f Frequency Hz
0.01 0.1
1
10
100
1 k
10 k 100 k 1 M 10 M
CL = 100 pF
TA = 25
C
VCC + = 5 V
VCC = 0
VCC
=
15 V
Figure 10
A
VD Differential V
oltage
Amplification dB
A
VD
Figure 11
120
100
80
60
10
100
1 k
10 k
Channel Separation dB
140
f Frequency Hz
CHANNEL SEPARATION
vs
FREQUENCY
160
100 k
1 M
Limited by
Thermal
Interaction
VCC
=
15 V
VI(PP) = 20 V to 5 kHz
RL = 2 k
TA = 25
C
RL = 1 k
Limited by
Pin-to-Pin
Capacitance
RL = 100
1
0.1
0.01
Output Saturation V
oltage V
OUTPUT SATURATION VOLTAGE
vs
FREE-AIR TEMPERATURE
10
TA Free-Air Temperature
C
50
25
0
25
50
75
100
125
Isink = 10 mA
Isink = 5 mA
Isink = 1 mA
Isink = 100
A
Isink = 10
A
Isink = 0
VCC + = 5 V to 30 V
VCC = 0
Figure 12
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 13
60
40
20
0
10 100
1
k
10
k
CMRR Common-Mode Rejection Ratio dB
80
100
f Frequency Hz
COMMON-MODE REJECTION RATIO
vs
FREQUENCY
120
100 k
1 M
VCC+ = 5 V
VCC = 0
TA = 25
C
VCC
=
15 V
Figure 14
0.1
1
10
100
1 k
SUPPLY VOLTAGE REJECTION RATIO
vs
FREQUENCY
10 k
100 k
1 M
0
20
40
60
80
100
120
140
f Frequency Hz
kSVR Supply V
oltage Rejection Ratio dB
Negative
Supply
Positive
Supply
k
SVR
VCC
=
15 V
TA = 25
C
Figure 15
TA Free-Air Temperature
C
SUPPLY CURRENT
vs
FREE-AIR TEMPERATURE
0
25
50
75
100
125
260
300
340
380
420
460
I CC
A
50
VCC
=
15 V
VCC + = 5 V, VCC = 0
25
Supply Current Per
Amplifier
Figure 16
0
1
Short-Circuit Output Current mA
t Elapsed Time min
SHORT-CIRCUIT OUTPUT CURRENT
vs
ELAPSED TIME
2
3
TA = 55
C
VCC
=
15 V
TA = 25
C
TA = 125
C
TA = 125
C
TA = 25
C
TA = 55
C
I OS
10
20
30
40
30
20
10
0
40
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 17
100
1000
300
1
10
Vn Equivalent Input Noise V
oltage nV/Hz
f Frequency Hz
EQUIVALENT INPUT NOISE VOLTAGE
AND EQUIVALENT INPUT NOISE CURRENT
vs
FREQUENCY
30
10
100
VCC
=
2 V to
18 V
TA = 25
C
1/f Corner = 2 Hz
In
Vn
100
1000
300
30
10
V
n
1k
nV/
Hz
1200
800
400
0
0
2
4
6
VN(PP) Noise V
oltage nV
1600
t Time s
PEAK-TO-PEAK INPUT NOISE VOLTAGE
OVER A
10-SECOND PERIOD
2000
8
10
N(PP)
V
VCC
=
2 V to
18 V
f = 0.1 Hz to 10 Hz
TA = 25
C
Figure 18
Vn Equivalent Input Noise V
oltage nV/Hz
fA/
Hz
V
n
Figure 19
t Time
s
0
4
6
8
10
VO Output V
oltage
mV
60
80
12
14
40
20
2
0
VCC
=
15 V
AV = 1
TA = 25
C
V
O
VOLTAGE-FOLLOWER
SMALL-SIGNAL
PULSE RESPONSE
40
60
80
20
Figure 20
0
5
15
0
50
100 150
V) Output V
oltage V
5
15
VOLTAGE-FOLLOWER
LARGE-SIGNAL
PULSE-RESPONSE
20
200 250 300 350
10
10
VCC
=
15 V
AV = 1
TA = 25
C
V
O
t Time
s
20
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
18
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
VO Output V
oltage
mV
V
O
t Time
s
60
40
0
0
20
40
60
80
120
VOLTAGE-FOLLOWER
SMALL-SIGNAL
PULSE RESPONSE
140
80
100 120 140
20
100
160
VCC + = 5 V, VCC = 0
VI = 0 to 100 mV
RL = 600
to GND
AV = 1
TA = 25
C
20
Figure 21
VO Output V
oltage
mV
V
O
t Time
s
2
1
1
0
10
20
30
3
5
VOLTAGE-FOLLOWER
LARGE-SIGNAL
PULSE RESPONSE
6
40
50
60
70
0
4
VCC+ = 5 V, VCC = 0
VI = 0 to 4 V
RL = 4.7 k
to 5 V
AV = 1
TA = 25
C
2
Figure 22
2
VO Output V
oltage V
V
O
t Time
s
2
1
1
0
10
20
30
3
5
6
40
50
60
70
0
4
VCC+ = 5 V, VCC = 0
VI = 0 to 4 V
RL = 0
AV = 1
TA = 25
C
VOLTAGE-FOLLOWER
LARGE-SIGNAL
PULSE RESPONSE
Figure 23
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
single-supply operation
The LT1013 is fully specified for single-supply operation (V
CC
= 0). The common-mode input voltage range
includes ground, and the output swings to within a few millivolts of ground.
Furthermore, the LT1013 has specific circuitry that addresses the difficulties of single-supply operation, both
at the input and at the output. At the input, the driving signal can fall below 0 V, either inadvertently or on a
transient basis. If the input is more than a few hundred millivolts below ground, the LT1013 is designed to deal
with the following two problems that can occur:
1.
On many other operational amplifiers, when the input is more than a diode drop below ground, unlimited
current will flow from the substrate (V
CC
terminal) to the input, which can destroy the unit. On the
LT1013, the 400-
resistors in series with the input (see schematic) protect the device even when the
input is 5 V below ground.
2.
When the input is more than 400 mV below ground (at T
A
= 25
C), the input stage of similar type
operational amplifiers saturates and phase reversal occurs at the output. This can cause lock up in
servo systems. Because of a unique phase-reversal protection circuitry (Q21, Q22, Q27, and Q28), the
LT1013 outputs do not reverse, even when the inputs are at 1.5 V (see Figure 24).
This phase-reversal protection circuitry does not function when the other operational amplifier on the LT1013
is driven hard into negative saturation at the output. Phase-reversal protection does not work on amplifier 1
when 2's output is in negative saturation or on amplifier 2 when 1's output is in negative saturation.
At the output, other single-supply designs either cannot swing to within 600 mV of ground or cannot sink more
than a few microproamperes while swinging to ground. The all-NPN output stage of the LT1013 maintains its
low output resistance and high gain characteristics until the output is saturated. In dual-supply operations, the
output stage is free of crossover distortion.
(a) VI(PP) = 1.5 V TO 4.5 V
(b) OUTPUT PHASE REVERSAL
EXHIBITED BY LM358
(c) NO PHASE REVERSAL
EXHIBITED BY LT1013
1
0
1
2
3
4
5
1
0
1
2
3
4
5
1
0
1
2
3
4
5
2
VI(PP) Input V
oltage V
I(PP)
V
VO Output V
oltage V
V
O
VO Output V
oltage V
V
O
Figure 24. Voltage-Follower Response With Input Exceeding
the Negative Common-Mode Input Voltage Range
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
comparator applications
The single-supply operation of the LT1013 lends itself for use as a precision comparator with TTL-compatible
output. In systems using both operational amplifiers and comparators, the LT1013 can perform multiple duties.
Refer to Figures 25 and 26.
VO Output V
oltage V
V
O
100 mV
VCC+ = 5 V
VCC = 0
TA = 25
C
Overdrive
10 mV
5 mV
2 mV
0
50 100 150 200 250 300 350 400 450
5
4
3
2
1
0
Differential
Input V
oltage
t Time
s
Figure 25. Low-to-High-Level Output
Response for Various Input Overdrives
VO Output V
oltage V
V
O
2 mV
5 mV
Overdrive
10 mV
0
50 100 150 200 250 300 350 400 450
5
4
3
2
1
0
Differential
Input V
oltage
t Time
s
VCC+ = 5 V
VCC = 0
TA = 25
C
100 mV
Figure 26. High-to-Low-Level Output
Response for Various Input Overdrives
low-supply operation
The minimum supply voltage for proper operation of the LT1013 is 3.4 V (three Ni-Cad batteries). Typical supply
current at this voltage is 290
A; therefore, power dissipation is only 1 mW per amplifier.
offset voltage and noise testing
The test circuit for measuring input offset voltage and its temperature coefficient is shown in Figure 30. This
circuit with supply voltages increased to
20 V is also used as the burn-in configuration.
The peak-to-peak equivalent input noise voltage of the LT1013 is measured using the test circuit shown in
Figure 27. The frequency response of the noise tester indicates that the 0.1-Hz corner is defined by only one
zero. The test time to measure 0.1-Hz to 10-Hz noise should not exceed 10 seconds, as this time limit acts as
an additional zero to eliminate noise contribution from the frequency band below 0.1 Hz.
An input noise voltage test is recommended when measuring the noise of a large number of units. A 10-Hz input
noise voltage measurement correlates well with a 0.1-Hz peak-to-peak noise reading because both results are
determined by the white noise and the location of the 1/f corner frequency.
Current noise is measured by the circuit and formula shown in Figure 28. The noise of the source resistors is
subtracted.
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
21
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
offset voltage and noise testing (continued)
10
100 k
0.1
F
2 k
4.7
F
AVD = 50,000
+
LT1013
+
LT1001
24.3 k
100 k
0.1
F
4.3 k
2.2
F
110 k
22
F
Oscilloscope
Rin = 1 M
NOTE A: All capacitor values are for nonpolarized capacitors only.
Figure 27. 0.1-Hz to 10-Hz Peak-to-Peak Noise Test Circuit
10 k
100
Vn
LT1013
+
In
+
[V
no2
*
(820 nV)2]1 2
40 M
W
100
10 M
10 M
10 M
10 M
Metal-film resistor
Figure 28. Noise-Current Test Circuit
and Formula
50 k
(see Note A)
15 V
15 V
VO = 1000 VIO
100
50 k
(see Note A)
(see Note A)
+
LT1013
NOTE A: Resistors must have low thermoelectric potential.
Figure 29. Test Circuit for V
IO
and
V
IO
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
22
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
typical applications
5 V
100 pF
2 k
Q4
2N2222
Q3
2N2905
5 V
68
4.3 k
LT1004
1.2 V
4 k
10 k
1 k
4-mA
Trim
IN
0 to 4 V
4-mA to 20-mA
To Load
2.2 k
MAX
100
10 k
10 k
20-mA Trim
100 k
5 V
0.33
F
10 k
10 k
820
Q2
2N2905
SN74HC04 (6)
820
Q1
2N2905
1N4002 (4)
10
F
10
F
T1
0.002
F
1/2
LT1013
1/2
LT1013
80 k
+
+
+
+
1% film resistor. Match 10-k
resistors 0.05%.
T1 = PICO-31080
Figure 30. 5-V 4-mA 20-mA Current Loop Transmitter With 12-Bit Accuracy
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
To Inverter
Drive
5 V
100 k
10 k
68 k
4.3 k
5 V
LT1004
1.2 V
4 k
2 k
4-mA
Trim
IN
0 to 4 V
1 k
20-mA
Trim
301
0.1
T1
10
F
4-mA to 20-mA
Fully Floating
1N4002 (4)
1/2
LT1013
+
+
1/2
LT1013
+
1% film resistor
Figure 31. Fully Floating Modification to 4-mA 20-mA Current Loop
Transmitter With 8-Bit Accuracy
IN +
IN +
IN
IN
6
18
7
13
11
12
14
R2
R1
OUT B
3
2
1
F
5
6
5 V
OUT A
R2
R1
0.01
F
1
F
1
F
1
F
1/2
LT1013
1/2
LT1013
+
+
1
7
4
15
1/2 LTC1043
1/2 LTC1043
5
8
2
3
8
NOTE A: VIO = 150
V, AVD = (R1/R2) + 1, CMRR = 120 dB, VICR = 0 to 5 V
Figure 32. 5-V Single-Supply Dual Instrumentation Amplifier
LT1013, LT1013A, LT1013D, LT1013Y
DUAL PRECISION OPERATIONAL AMPLIFIERS
SLOS018B MAY 1988 REVISED OCTOBER 1996
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
LT1013
LT1013
LT1013
LT1013
To Input
Cable Shields
RG (2 k
typ)
200 k
10 k
10 k
10 k
10 k
10 k
OUT
5 V
10 k
20 k
5 V
20 k
200 k
5 V
IN
IN +
1
F
+
+
+
+
2
3
10
9
13
12
14
4
11
7
6
5
1
8
1% film resistor. Match 10-k
resistors 0.05%.
For high source impedances, use 2N2222 as diodes.
NOTE A: AVD = (400,000/RG) + 1
Figure 33. 5-V Precision Instrumentation Amplifier
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1998, Texas Instruments Incorporated
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