OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B FEBRUARY 1989 REVISED AUGUST 1994
Copyright
1994, Texas Instruments Incorporated
21
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
Direct Replacements for PMI and LTC OP27
and OP37 Series
Features of OP27A, OP27C, OP37A, and
OP37C:
Maximum Equivalent Input Noise Voltage:
3.8 nV/
Hz at 1 kHz
5.5 nV/
Hz at 10 kHz
Very Low Peak-to-Peak Noise Voltage at
0.1 Hz to 10 Hz . . . 80 nV Typ
Low Input Offset Voltage . . . 25
V Max
High Voltage Amplification . . . 1 V/
V Min
Feature of OP37 Series:
Minimum Slew Rate . . . 11 V/
s
description
The OP27 and OP37 operational amplifiers
combine outstanding noise performance with
excellent precision and high-speed specifications.
The wideband noise is only 3 nV/
Hz and with the
1/f noise corner at 2.7 Hz, low noise is maintained
for all low-frequency applications.
The outstanding characteristics of the OP27 and
OP37 make these devices excellent choices
for low-noise amplifier applications requiring
precision performance and reliability. Additionally,
the OP37 is free of latch-up in high-gain,
large-capacitive-feedback configurations.
The OP27 series is compensated for unity gain.
The OP37 series is decompensated for increased
bandwidth and slew rate and is stable down to a
gain of 5.
The OP27A, OP27C, OP37A, and OP37C are
characterized for operation over the full military
temperature range of 55
C to 125
C. The
OP27E, OP27G, OP37E, and OP37G are
characterized for operation from 25
C to 85
C.
AVAILABLE OPTIONS
VIOmax
STABLE
PACKAGE
TA
VIOmax
AT 25
C
STABLE
GAIN
CERAMIC DIP
(JG)
CHIP CARRIER
(FK)
PLASTIC DIP
(P)
25
V
1
--
--
OP27EP
25
C to 85
C
25
V
5
--
--
OP37EP
25
C to 85
C
100
V
1
--
--
OP27GP
100
V
5
--
--
OP37GP
25
V
1
OP27AJG
OP27AFK
--
55
C to 125
C
25
V
5
OP37AJG
OP37AFK
--
55
C to 125
C
100
V
1
OP27CJG
--
--
100
V
5
OP37CJG
--
--
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.
1
2
3
4
8
7
6
5
V
IO
TRIM
IN
IN +
V
CC
V
IO
TRIM
V
CC +
OUT
NC
JG OR P PACKAGE
(TOP VIEW)
IN +
IN
OUT
VIO TRIM
1
8
6
3
2
symbol
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
NC
V
CC +
NC
OUT
NC
NC
1N
NC
IN +
NC
FK PACKAGE
(TOP VIEW)
NC
NC
NC
NC
NC
NC
NC No internal connection
CC
V
Pin numbers are for the JG and P packages.
IO
V
TRIM
NC
IO
V
TRIM
+
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW
-NOISE HIGH-SPEED OPERA
TIONAL
AMPLIFIER
SLOS100B
FEBRUAR
Y
1989 REVISED
AUGUST
1994
22
POST
OFFICE BOX 655303 DALLAS,
TEXAS
75265
POST
OFFICE BOX 1443 HOUST
ON,
TEXAS
772511443
schematic
IN +
IN
Q3
Q1A
Q1B Q2B
Q2A
Q11
Q12
Q27
Q28
Q26
Q46
Q19
Q20
Q45
Q22
Q24
Q23
Q21
Q6
VIO TRIM
VIO TRIM
VCC +
OUT
VCC
480
A
750
A
260
A
240
A
120
A
340
A
C1
C1 = 120 pF for OP27
C1 = 15 pF for OP37
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B FEBRUARY 1989 REVISED AUGUST 1994
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duration of output short circuit
unlimited
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input current (see Note 2)
25 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous power dissipation
See Dissipation Rating Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range: OP27A, OP27C, OP37A, OP37C
55
C to 125
C
. . . . . . . . . . . . . . .
OP27E, OP27G, OP37E, OP37G
25
C to 85
C
. . . . . . . . . . . . . . .
Storage temperature range
65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG or FK package
300
C
. . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds : P package
260
C
. . . . . . . . . . . . . . . . . . . .
NOTES:
1. All voltage values are with respect to the midpoint between VCC + and VCC unless otherwise noted.
2. The inputs are protected by back-to-back diodes. Current-limiting resistors are not used in order to achieve low noise. Excessive
input current will flow if a differential input voltage in excess of approximately
0.7 V is applied between the inputs unless some
limiting resistance is used.
DISSIPATION RATING TABLE
PACKAGE
TA
25
C
POWER RATING
DERATING FACTOR
ABOVE TA = 25
C
TA = 85
C
POWER RATING
TA = 125
C
POWER RATING
JG
FK
P
1050 mW
1375 mW
1000 mW
8.4 mW/
C
11.0 mW/
C
8.0 mW/
C
546 mW
715 mW
520 mW
210 mW
275 mW
N/A
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B FEBRUARY 1989 REVISED AUGUST 1994
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
recommended operating conditions
OP27A, OP37A
OP27C, OP37C
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
Supply voltage, VCC +
4
15
22
4
15
22
V
Supply voltage, VCC
4
15
22
4
15
22
V
Common mode input voltage VIC
VCC
=
15
V, TA = 25
C
11
11
V
Common-mode input voltage, VIC
VCC
=
15
V, TA = 55
C to 125
C
10.3
10.2
V
Operating free-air temperature, TA
55
125
55
125
C
electrical characteristics at specified free-air temperature, V
CC
=
15 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
T
OP27A, OP37A
OP27C, OP37C
UNIT
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIO
Input offset voltage
VO = 0,
VIC = 0
25
C
10
25
30
100
V
VIO
Input offset voltage
O
,
IC
RS = 50
, See Note 3
Full range
60
300
V
VIO
Average temperature
coefficient of input
offset voltage
Full range
0.2
0.6
0.4
1.8
V/
C
Long-term drift of input
offset voltage
See Note 4
0.2
1
0.4
2
V/mo
IIO
Input offset current
VO = 0
VIC = 0
25
C
7
35
12
75
nA
IIO
Input offset current
VO = 0,
VIC = 0
Full range
50
135
nA
IIB
Input bias current
VO = 0
VIC = 0
25
C
10
40
15
80
nA
IIB
Input bias current
VO = 0,
VIC = 0
Full range
60
150
nA
VICR
Common-mode input
25
C
11
to
11
11
to
11
V
VICR
voltage range
Full range
10.3
to
10.3
10.5
to
10.5
V
RL
2 k
12
13.8
11.5
13.5
VOM
Peak output voltage swing
RL
0.6 k
10
11.5
10
11.5
V
RL
2 k
Full range
11.5
10.5
RL
2 k
, VO =
10 V
1000
1800
700
1500
Large signal differential
RL
1 k
, VO =
10 V
800
1500
1500
AVD
Large-signal differential
voltage amplification
RL
0.6 k
, VO =
1 V,
VCC
=
4 V
250
700
200
500
V/mV
RL
2 k
, VO =
10 V
Full range
600
300
ri(CM)
Common-mode input
resistance
3
2
G
ro
Output resistance
VO = 0,
IO = 0
25
C
70
70
CMRR
Common-mode rejection
VIC =
11 V
25
C
114
126
100
120
dB
CMRR
j
ratio
VIC =
10 V
Full range
110
94
dB
kSVR
Supply voltage rejection
VCC
=
4 V to
18 V
25
C
100
120
94
118
dB
kSVR
y
g
j
ratio
VCC
=
4.5 V to
18 V
Full range
96
86
dB
Full range is 55
C to 125
C.
NOTES:
3. Input offset voltage measurements are performed by automatic test equipment approximately 0.5 seconds after applying power.
4. Long-term drift of input offset voltage refers to the average trend line of offset voltage versus time over extended periods after the
first 30 days of operation. Excluding the initial hour of operation, changes in VIO during the first 30 days are typically 2.5
V
(see Figure 3).
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B FEBRUARY 1989 REVISED AUGUST 1994
25
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
recommended operating conditions
MIN
NOM
MAX
UNIT
Supply voltage, VCC +
4
15
22
V
Supply voltage, VCC
4
15
22
V
Common mode input voltage VIC
VCC
=
15
V, TA = 25
C
11
V
Common-mode input voltage, VIC
VCC
=
15
V, TA = 55
C to 125
C
10.5
V
Operating free-air temperature, TA
25
85
C
electrical characteristics at specified free-air temperature, V
CC
=
15 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
T
OP27E, OP37E
OP27G, OP37G
UNIT
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIO
Input offset voltage
VO = 0,
VIC = 0
25
C
10
25
30
100
V
VIO
Input offset voltage
O
,
IC
RS = 50
, See Note 3
Full range
60
220
V
VIO
Average temperature
coefficient of input
offset voltage
Full range
0.2
0.6
0.4
1.8
V/
C
Long-term drift of input
offset voltage
See Note 4
0.2
1
0.4
2
V/mo
IIO
Input offset current
VO = 0
VIC = 0
25
C
7
35
12
75
nA
IIO
Input offset current
VO = 0,
VIC = 0
Full range
50
135
nA
IIB
Input bias current
VO = 0
VIC = 0
25
C
10
40
15
80
nA
IIB
Input bias current
VO = 0,
VIC = 0
Full range
60
150
nA
VICR
Common-mode input
25
C
11
to
11
11
to
11
V
VICR
voltage range
Full range
10.3
to
10.3
10.5
to
10.5
V
RL
2 k
12
13.8
11.5
13.5
VOM
Peak output voltage swing
RL
0.6 k
10
11.5
10
11.5
V
RL
2 k
Full range
11.5
10.5
RL
2 k
, VO =
10 V
1000
1800
700
1500
Large signal differential
RL
1 k
, VO =
10 V
800
1500
1500
AVD
Large-signal differential
voltage amplification
RL
0.6 k
, VO =
1 V,
VCC
=
4 V
250
700
200
500
V/mV
RL
2 k
, VO =
10 V
Full range
600
450
ri(CM)
Common-mode input
resistance
3
2
G
ro
Output resistance
VO = 0,
IO = 0
25
C
70
70
CMRR
Common-mode rejection
VIC =
11 V
25
C
114
126
100
120
dB
CMRR
j
ratio
VIC =
10 V
Full range
110
96
dB
kSVR
Supply voltage rejection
VCC
=
4 V to
18 V
25
C
100
120
94
118
dB
kSVR
y
g
j
ratio
VCC
=
4.5 V to
18 V
Full range
96
90
dB
Full range is 25
C to 85
C.
NOTES:
3. Input offset voltage measurements are performed by automatic test equipment approximately 0.5 seconds after applying power.
4. Long-term drift of input offset voltage refers to the average trend line of offset voltage versus time over extended periods after the
first 30 days of operation. Excluding the initial hour of operation, changes in VIO during the first 30 days are typically 2.5
V
(see Figure 3).
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