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Электронный компонент: LT1219

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1
LT1218/LT1219
s
Rail-to-Rail Input and Output
s
90
V V
OS(MAX)
for V
CM
= V
to V
+
s
High Common Mode Rejection Ratio: 97dB Min
s
C-Load
TM
Stable Version (LT1219)
s
High A
VOL
: 500V/mV Minimum Driving 10k
Load
s
Wide Supply Range:
2V to
15V (LT1218/LT1219)
2V to
5V (LT1218L/LT1219L)
s
Shutdown Mode: I
S
< 30
A
s
Low Supply Current: 420
A Max
s
Low Input Bias Current: 18nA Typical
s
300kHz Gain-Bandwidth Product (LT1218)
s
Slew Rate: 0.10V/
s (LT1218)
FEATURES
DESCRIPTIO
N
U
The LT
1218/LT1219 are bipolar op amps which combine
rail-to-rail input and output operation with precision speci-
fications. Unlike other rail-to-rail amplifiers, the LT1218/
LT1219's input offset voltage is a low 90
V across the
entire rail-to-rail input range, not just a portion of it. Using
a patented technique, both input stages of the LT1218/
LT1219 are trimmed: one at the negative supply and the
other at the positive supply. The resulting common mode
rejection of 97dB minimum is much better than other rail-
to-rail input op amps. A minimum open-loop gain of
500V/mV into a 10k load virtually eliminates all gain error.
The LT1218 has conventional compensation which
assures stability for capacitive loads of 1000pF or less.
The LT1219 has compensation that requires the use of a
0.1
F output capacitor, which improves the amplifier's
supply rejection and reduces output impedance at high
frequencies. The output capacitor's filtering action also
reduces high frequency noise, which is beneficial when
driving A/D converters.
High and low voltage versions of the devices are offered.
Operation is specified for 3V, 5V and
5V supplies for the
LT1218L/LT1219L and 3V, 5V and
15V for the LT1218/
LT1219.
APPLICATIO
N
S
U
s
Driving A/D Converters
s
Test Equipment Amplifiers
s
MUX Amplifiers
Precision Rail-to-Rail Input
and Output Op Amps
C-Load is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Voltage Follower Input to Output Error
MUX Amplifier
TYPICAL APPLICATIO
N
U
+
+
LT1218L
LT1218L
V
OUT
V
IN1
V
IN2
INPUT
SELECT
5V
5V
74HCO4
1218/19 TA01
SHDN
MAXIMUM IN
TO OUT ERROR
= 110
V FOR
0.05V
V
IN
4.8V
R
L
= 10k
SHDN
INPUT VOLTAGE (V)
0
ERROR
(mV)
1
2
3
4
LT1218/19 TA02
5
V
S
= 5V
A
V
= 1
NO LOAD
10
1.0
0.1
0.01
0.05
4.95
MAX ERROR = 110
V
0.05V
V
IN
4.8V
2
LT1218/LT1219
ABSOLUTE
M
AXI
M
U
M
RATINGS
W
W
W
U
PACKAGE/ORDER I
N
FOR
M
ATIO
N
W
U
U
Supply Voltage
LT1218/LT1219 .................................................
18V
LT1218L/LT1219L ...............................................
8V
Input Current ......................................................
15mA
Output Short-Circuit Duration (Note 1) ......... Continuous
Operating Temperature Range ................ 40
C to 85
C
Specified Temperature Range (Note 3) ... 40
C to 85
C
Storage Temperature Range ................. 65
C to 150
C
Junction Temperature ........................................... 150
C
Lead Temperature (Soldering, 10 sec).................. 300
C
ORDER PART
NUMBER
LT1218CN8
LT1218CS8
LT1218LCN8
LT1218LCS8
LT1219CN8
LT1219CS8
LT1219LCN8
LT1219LCS8
S8 PART MARKING
1
2
3
4
8
7
6
5
TOP VIEW
V
OS
TRIM
IN
+IN
V
V
OS
TRIM
V
+
OUT
SHDN
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150
C,
JA
= 130
C/ W (N8)
T
JMAX
= 150
C,
JA
= 190
C/ W (S8)
1218
1219
1218L 1219L
Consult factory for Industrial and Military grades.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
CM
= V
+
25
90
V
V
CM
= V
25
90
V
V
OS
Input Offset Voltage Shift
V
CM
= V
to V
+
15
70
V
I
B
Input Bias Current
V
CM
= V
+
30
70
nA
V
CM
= V
70
18
nA
I
B
Input Bias Current Shift
V
CM
= V
to V
+
50
140
nA
I
OS
Input Offset Current
V
CM
= V
+
5
18
nA
V
CM
= V
2
18
nA
I
OS
Input Offset Current Shift
V
CM
= V
to V
+
5
18
nA
e
n
Input Noise Voltage Density
f = 1kHz
33
nV/
Hz
i
n
Input Noise Current Density
f = 1kHz
0.09
pA/
Hz
A
VOL
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 50mV to 4.8V, R
L
= 10k
250
1000
V/mV
V
S
= 3V, V
O
= 50mV to 2.8V, R
L
= 10k
200
750
V/mV
CMRR
Common Mode Rejection Ratio
V
S
= 5V, V
CM
= V
to V
+
97
110
dB
V
S
= 3V, V
CM
= V
to V
+
92
106
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.3V to 12V, V
CM
= 0V, V
O
= 0.5V
90
100
dB
V
OL
Output Voltage Swing LOW
No Load
4
12
mV
I
SINK
= 0.5mA
45
90
mV
I
SINK
= 2.5mA
120
240
mV
V
OH
Output Voltage Swing HIGH
No Load
V
+
0.012
V
+
0.003
V
I
SOURCE
= 0.5mA
V
+
0.130
V
+
0.065
V
I
SOURCE
= 2.5mA
V
+
0.400
V
+
0.210
V
I
SC
Short-Circuit Current
V
S
= 5V
5
10
mA
V
S
= 3V
4
7
mA
I
S
Supply Current
V
S
= 5V
370
420
A
V
S
= 3V
370
410
A
Positive Supply Current, SHDN
V
S
= 5V, V
SHDN
= 0V
9
30
A
V
S
= 3V, V
SHDN
= 0V
6
20
A
T
A
= 25
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
O
= half supply, V
SHDN
= V
+
, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
3
LT1218/LT1219
ELECTRICAL CHARACTERISTICS
T
A
= 25
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
O
= half supply, V
SHDN
= V
+
, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SR
Slew Rate
(LT1218/LT1218L)
A
V
= 1
0.10
V/
s
(LT1219/LT1219L)
A
V
= 1
0.05
V/
s
GBW
Gain Bandwidth Product
(LT1218/LT1218L)
A
V
= 1000
0.30
MHz
(LT1219/LT1219L)
A
V
= 1000
0.15
MHz
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
CM
= V
+
q
75
200
V
V
CM
= V
q
75
200
V
V
OS
TC
Input Offset Drift
(Note 2)
q
1
3
V/
C
V
OS
Input Offset Voltage Shift
V
CM
= V
to V
+
q
25
80
V
I
B
Input Bias Current
V
CM
= V
+
q
30
75
nA
V
CM
= V
q
75
18
nA
I
B
Input Bias Current Shift
V
CM
= V
to V
+
q
50
150
nA
I
OS
Input Offset Current
V
CM
= V
+
q
5
25
nA
V
CM
= V
q
3
25
nA
I
OS
Input Offset Current Shift
V
CM
= V
to V
+
q
5
25
nA
A
VOL
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 50mV to 4.8V, R
L
= 10k
q
250
1000
V/mV
V
S
= 3V, V
O
= 50mV to 2.8V, R
L
= 10k
q
150
750
V/mV
CMRR
Common Mode Rejection Ratio
V
S
= 5V, V
CM
= V
to V
+
q
96
104
dB
V
S
= 3V, V
CM
= V
to V
+
q
91
106
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.3V to 12V, V
CM
= 0V, V
O
= 0.5V
q
88
100
dB
V
OL
Output Voltage Swing LOW
No Load
q
4
14
mV
I
SINK
= 0.5mA
q
45
100
mV
I
SINK
= 2.5mA
q
130
290
mV
V
OH
Output Voltage Swing HIGH
No Load
q
V
+
0.014
V
+
0.004
V
I
SOURCE
= 0.5mA
q
V
+
0.150
V
+
0.075
V
I
SOURCE
= 2.5mA
q
V
+
0.480
V
+
0.240
V
I
SC
Short-Circuit Current
V
S
= 5V
q
4
7
mA
V
S
= 3V
q
3
6
mA
I
S
Supply Current
V
S
= 5V
q
370
485
A
V
S
= 3V
q
370
475
A
Positive Supply Current, SHDN
V
S
= 5V, V
SHDN
= 0V
q
9
36
A
V
S
= 3V, V
SHDN
= 0V
q
6
26
A
0
C
T
A
70
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
O
= half supply, V
SHDN
= V
+
, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
CM
= V
+
0.15
q
400
V
V
CM
= V
+ 0.15
q
400
V
V
OS
TC
Input Offset Drift
(Note 2)
q
1
4
V/
C
V
OS
Input Offset Voltage Shift
V
CM
= V
+
0.15 to V
+ 0.15
q
30
105
V
I
B
Input Bias Current
V
CM
= V
+
0.15
q
80
nA
V
CM
= V
+ 0.15
q
80
nA
I
B
Input Bias Current Shift
V
CM
= V
+
0.15 to V
+ 0.15
q
160
nA
I
OS
Input Offset Current
V
CM
= V
+
0.15
q
40
nA
V
CM
= V
+ 0.15
q
40
nA
I
OS
Input Offset Current Shift
V
CM
= V
+
0.15 to V
+ 0.15
q
40
nA
40
C
T
A
85
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
O
= half supply, V
SHDN
= V
+
, unless otherwise noted. (Note 3)
4
LT1218/LT1219
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
A
VOL
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 50mV to 4.8V, R
L
= 10k
q
150
500
V/mV
V
S
= 3V, V
O
= 50mV to 2.8V, R
L
= 10k
q
100
500
V/mV
CMRR
Common Mode Rejection Ratio
V
S
= 5V, V
CM
= V
+
0.15 to V
+ 0.15
q
93
102
dB
V
S
= 3V, V
CM
= V
+
0.15 to V
+ 0.15
q
88
100
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.3V to 12V, V
CM
= 0V, V
O
= 0.5V
q
86
100
dB
V
OL
Output Voltage Swing LOW
No Load
q
5
15
mV
I
SINK
= 0.5mA
q
50
105
mV
I
SINK
= 2.5mA
q
130
300
mV
V
OH
Output Voltage Swing HIGH
No Load
q
V
+
0.015
V
+
0.004
mV
I
SOURCE
= 0.5mA
q
V
+
0.160
V
+
0.070
mV
I
SOURCE
= 2.5mA
q
V
+
0.500
V
+
0.250
mV
I
SC
Short-Circuit Current
V
S
= 5V
q
4
7
mA
V
S
= 3V
q
3
7
mA
I
S
Supply Current
V
S
= 5V
q
410
505
A
V
S
= 3V
q
400
495
A
Positive Supply Current, SHDN
V
S
= 5V, V
SHDN
= 0V
q
15
50
A
V
S
= 3V, V
SHDN
= 0V
q
13
40
A
40
C
T
A
85
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
O
= half supply, V
SHDN
= V
+
, unless otherwise noted. (Note 3)
LT1218L/LT1219L only; T
A
= 25
C, V
S
=
5V, V
CM
= 0V, V
O
= 0V, V
SHDN
= 5V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
CM
= V
+
35
140
V
V
CM
= V
35
140
V
V
OS
Input Offset Voltage Shift
V
CM
= V
to V
+
20
70
V
I
B
Input Bias Current
V
CM
= V
+
30
70
nA
V
CM
= V
70
18
nA
I
B
Input Bias Current Shift
V
CM
= V
to V
+
50
140
nA
I
OS
Input Offset Current
V
CM
= V
+
5
18
nA
V
CM
= V
2
18
nA
I
OS
Input Offset Current Shift
V
CM
= V
to V
+
5
18
nA
A
VOL
Large-Signal Voltage Gain
V
O
= 4.7V to 4.7V, R
L
= 10k
500
2800
V/mV
V
O
= 4.5V to 4.5V, R
L
= 2k
300
1300
V/mV
CMRR
Common Mode Rejection Ratio
V
CM
= V
to V
+
103
114
dB
V
OL
Output Voltage Swing LOW
No Load
V
+ 0.004
V
+ 0.012
V
I
SINK
= 0.5mA
V
+ 0.045
V
+ 0.090
V
I
SINK
= 5mA
V
+ 0.180
V
+ 0.525
V
V
OH
Output Voltage Swing HIGH
No Load
V
+
0.012
V
+
0.003
V
I
SOURCE
= 0.5mA
V
+
0.130
V
+
0.065
V
I
SOURCE
= 5mA
V
+
0.800
V
+
0.350
V
I
SC
Short-Circuit Current
6
12
mA
I
S
Supply Current
400
430
A
Positive Supply Current, SHDN
V
SHDN
= 0V
10
40
A
SR
Slew Rate
(LT1218/LT1218L)
A
V
= 1, R
L
= Open, V
O
=
3.5V
0.06
0.10
V/
s
(LT1219/LT1219L)
A
V
= 1, R
L
= Open, V
O
=
3.5V
0.03
0.05
V/
s
GBW
Gain-Bandwidth Product
(LT1218/LT1218L)
A
V
= 1000
0.2
0.30
MHz
(LT1219/LT1219L)
A
V
= 1000
0.1
0.15
MHz
5
LT1218/LT1219
ELECTRICAL CHARACTERISTICS
LT1218L/LT1219L only; 0
C
T
A
70
C, V
S
=
5V, V
CM
= 0V, V
O
= 0V, V
SHDN
= 5V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
CM
= V
+
q
100
250
V
V
CM
= V
q
100
250
V
V
OS
Input Offset Voltage Shift
V
CM
= V
to V
+
q
30
90
V
I
B
Input Bias Current
V
CM
= V
+
q
30
75
nA
V
CM
= V
q
75
18
nA
I
B
Input Bias Current
V
CM
= V
to V
+
q
50
150
nA
I
OS
Input Offset Current
V
CM
= V
+
q
5
25
nA
V
CM
= V
q
3
25
nA
I
OS
Input Offset Current Shift
V
CM
= V
to V
+
q
5
20
nA
A
VOL
Large-Signal Voltage Gain
V
O
= 4.7V to 4.7V, R
L
= 10k
q
375
2800
V/mV
V
O
= 4.5V to 4.5V, R
L
= 2k
q
275
1300
V/mV
CMRR
Common Mode Rejection Ratio
V
CM
= V
to V
+
q
100
110
dB
V
OL
Output Voltage Swing LOW
No Load
q
V
+ 0.004
V
+ 0.014
V
I
SINK
= 0.5mA
q
V
+ 0.045
V
+ 0.100
V
I
SINK
= 5mA
q
V
+ 0.200
V
+ 0.580
V
V
OH
Output Voltage Swing HIGH
No Load
q
V
+
0.014
V
+
0.004
V
I
SOURCE
= 0.5mA
q
V
+
0.150
V
+
0.075
V
I
SOURCE
= 5mA
q
V
+
0.920
V
+
0.450
V
I
SC
Short-Circuit Current
q
5
10
mA
I
S
Supply Current
q
400
495
A
Positive Supply Current, SHDN
V
SHDN
= 0V
q
11
54
A
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
CM
= V
+
0.15
q
125
500
V
V
CM
= V
+ 0.15
q
125
500
V
V
OS
Input Offset Voltage Shift
V
CM
= V
+
0.15 to V
+ 0.15
q
35
120
V
I
B
Input Bias Current
V
CM
= V
+
0.15
q
80
nA
V
CM
= V
+ 0.15
q
80
nA
I
B
Input Bias Current
V
CM
= V
+
0.15 to V
+ 0.15
q
160
nA
I
OS
Input Offset Current Shift
V
CM
= V
+
0.15
q
40
nA
V
CM
= V
+ 0.15
q
40
nA
I
OS
Input Offset Current Shift
V
CM
= V
+
0.15 to V
+ 0.15
q
40
nA
A
VOL
Large-Signal Voltage Gain
V
O
= 4.7V to 4.7V, R
L
= 10k
q
300
2000
V/mV
V
O
= 4.5V to 4.5V, R
L
= 2k
q
200
600
V/mV
CMRR
Common Mode Rejection Ratio
V
CM
= V
+
0.15 to V
+ 0.15
q
98
109
dB
V
OL
Output Voltage Swing LOW
No Load
q
V
+ 0.005
V
+ 0.015
V
I
SINK
= 0.5mA
q
V
+ 0.050
V
+ 0.105
V
I
SINK
= 2.5mA
q
V
+ 0.200
V
+ 0.620
V
V
OH
Output Voltage Swing HIGH
No Load
q
V
+
0.015
V
+
0.004
V
I
SOURCE
= 0.5mA
q
V
+
0.160
V
+
0.070
V
I
SOURCE
= 2.5mA
q
V
+
1.000
V
+
0.400
V
I
SC
Short-Circuit Current
q
5
10
mA
I
S
Supply Current
q
420
525
A
Positive Supply Current, SHDN
V
SHDN
= 0V
q
18
60
A
LT1218L, LT1219L only; 40
C
T
A
85
C, V
S
=
5V; V
CM
= 0V, V
O
= 0V, V
SHDN
= 5V, unless otherwise noted. (Note 3)