Low Power, High Precision
Operational Amplifier
OP97
FEATURES
Low supply current: 600 μA maximum
OP07 type performance
Offset voltage: 20 μV maximum
Offset voltage drift: 0.6 μV/°C maximum
Very low bias current
25°C: 100 pA maximum
−55°C to +125°C: 250 pA maximum
High common-mode rejection: 114 dB minimum
Extended industrial temperature range: −40°C to +85°C
PIN CONNECTIONS
NULL
1
–IN
2
+IN
3
V–
4
OP97
8
7
6
5
NULL
V+
00299-001
OUT
OVER
COMP
Figure 1. 8-Lead PDIP (P Suffix)
8-Lead SOIC (S Suffix)
GENERAL DESCRIPTION
The OP97 is a low power alternative to the industry-standard
OP07 precision amplifier. The OP97 maintains the standards of
performance set by the OP07 while utilizing only 600 μA supply
current, less than 1/6 that of an OP07. Offset voltage is an ultralow
25 μV, and drift over temperature is below 0.6 μV/°C. External
offset trimming is not required in the majority of circuits.
Improvements have been made over OP07 specifications in
several areas. Notable is bias current, which remains below
250 pA over the full military temperature range. The OP97 is
ideal for use in precision long-term integrators or sample-and-
hold circuits that must operate at elevated temperatures.
Common-mode rejection and power supply rejection are also
improved with the OP97, at 114 dB minimum over wider
ranges of common-mode or supply voltage. Outstanding PSR, a
supply range specified from ±2.25 V to ±20 V, and the minimal
power requirements of the OP97 combine to make the OP97 a
preferred device for portable and battery-powered instruments.
The OP97 conforms to the OP07 pinout, with the null potenti-
ometer connected between Pin 1 and Pin 8 with the wiper to
V+. The OP97 upgrades circuit designs using AD725, OP05,
OP07, OP12, and PM1012 type amplifiers. It may replace 741-
type amplifiers in circuits without nulling or where the nulling
circuitry has been removed.
Rev. G
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©1997–2009 Analog Devices, Inc. All rights reserved.
OP97
TABLE OF CONTENTS
Features .............................................................................................. 1
Pin Connections ............................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics ............................................................. 3
Absolute Maximum Ratings............................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution...................................................................................5
Typical Performance Characteristics ..............................................6
Application Information ................................................................ 11
AC Performance ............................................................................. 12
Guarding and Shielding ................................................................. 13
Outline Dimensions ....................................................................... 15
Ordering Guide .......................................................................... 16
REVISION HISTORY
3/09—Rev. F to Rev. G
Changes to Figure 20 and Figure 23 ............................................... 9
Changes to Figure 26 and Figure 27 ............................................. 10
Updated Outline Dimensions ....................................................... 15
Changes to Ordering Guide .......................................................... 16
11/07—Rev. E to Rev. F
Updated Format .................................................................. Universal
Changes to Ordering Guide .......................................................... 16
07/03—Rev. D to Rev. E
Deleted H-08A .................................................................... Universal
Deleted Q-8 ......................................................................... Universal
Deleted E-20A ..................................................................... Universal
Deleted Die Characteristics ............................................................. 4
Deleted Wafer Test Limits ............................................................... 4
Updated TPC 14 ............................................................................... 5
Updated Outline Dimensions ....................................................... 10
01/02—Rev. C to Rev. D
Edits to Absolute Maximum Ratings ..............................................3
Edits to Ordering Guide ...................................................................3
Deleted DICE Characteristics ..........................................................3
Deleted Wafer Test Limits ................................................................3
Edits to Applications Information...................................................7
Rev. G | Page 2 of 16
OP97
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
V
S
= ±15 V, V
CM
= 0 V, T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter
INPUT CHARACTERISTICS
Input Offset Voltage
Long-Term Offset
Voltage Stability
Input Offset Current
Input Bias Current
Input Noise Voltage
Input Noise Voltage Density
Input Noise Current Density
Large Signal Voltage Gain
Common-Mode Rejection
Input Voltage Range
3
OUTPUT CHARACTERISTICS
Output Voltage Swing
Differential Input Resistance
4
POWER SUPPLY
Power Supply Rejection
Supply Current
Supply Voltage
DYNAMIC PERFORMANCE
Slew Rate
Closed-Loop Bandwidth
1
2
Symbol
V
OS
ΔV
OS
/Time
I
OS
I
B
e
n
p-p
e
n
i
n
A
VO
CMR
IVR
V
O
R
IN
PSR
I
SY
V
S
SR
BW
Conditions
Min
OP97E
Typ
10
0.3
30
±30
0.5
17
14
20
2000
132
±14.0
±14
Max
25
Min
OP97F
Typ
30
0.3
30
±30
0.5
17
14
20
2000
132
±14.0
±14
Max
75
Unit
μV
μV/month
pA
pA
μV p-p
nV/√Hz
nV/√Hz
fA/√Hz
V/mV
dB
V
V
MΩ
dB
μA
V
V/μs
MHz
100
±100
30
22
200
110
±13.5
±13
30
110
600
±20
±2
0.1
0.4
150
±150
30
22
0.1 Hz to 10 Hz
f
O
= 10 Hz
1
f
O
= 1000 Hz
2
f
O
= 10 Hz
V
O
= ±10 V; R
L
= 2 kΩ
V
CM
= ±13.5 V
300
114
±13.5
±13
30
114
±2
0.1
0.4
R
L
= 10 kΩ
V
S
= ±2 V to ±20 V
Operating range
132
380
±15
0.2
0.9
132
380
±15
0.2
0.9
600
±20
A
VCL
= 1
10 Hz noise voltage density is sample tested. Devices 100% tested for noise are available on request.
Sample tested.
3
Guaranteed by CMR test.
4
Guaranteed by design.
Rev. G | Page 3 of 16
OP97
V
S
= ±15 V, V
CM
= 0 V, −40°C ≤ T
A
≤ +85°C for the OP97E/OP97F, unless otherwise noted.
Table 2.
Parameter
Input Offset Voltage
Average Temperature
Coefficient of V
OS
Input Offset Current
Average Temperature
Coefficient of I
OS
Input Bias Current
Average Temperature
Coefficient of I
B
Large Signal Voltage Gain
Common-Mode Rejection
Power Supply Rejection
Input Voltage Range
1
Output Voltage Swing
Slew Rate
Supply Current
Supply Voltage
1
Symbol
V
OS
TCV
OS
I
OS
TCI
OS
I
B
TCI
B
A
VO
CMR
PSR
IVR
V
O
SR
I
SY
V
S
Conditions
S suffix
Min
OP97E
Typ
25
0.2
60
0.4
±60
0.4
1000
128
126
±14.0
±14
0.15
400
±15
Max
60
0.6
250
2.5
±250
2.5
Min
OP97F
Typ
60
0.3
0.3
80
0.6
±80
0.6
1000
128
128
±14.0
±14
0.15
400
±15
Max
200
2.0
750
7.5
±750
7.5
Unit
μV
μV/°C
pA
pA/°C
pA
pA/°C
V/mV
dB
dB
V
V
V/μs
μA
V
V
O
= 10 V; R
L
= 2 kΩ
V
CM
= ±13.5 V
V
S
= ±2.5 V to ±20 V
R
L
= 10 kΩ
200
108
108
±13.5
±13
0.05
±2.5
150
108
108
±13.5
±13
0.05
800
±20
±2.5
Operating range
800
±20
Guaranteed by CMR test.
Rev. G | Page 4 of 16
OP97
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings apply to both DICE and packaged
parts, unless otherwise noted.
Table 3.
Parameter
Supply Voltage
Input Voltage
1
Differential Input Voltage
2
Differential Input Current
2
Output Short-Circuit Duration
Operating Temperature Range
OP97E, OP97F (P, S)
Storage Temperature Range
Junction Temperature Range
Lead Temperature (Soldering, 60 sec)
1
THERMAL RESISTANCE
θ
JA
is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 4
.
Package Type
8-Lead PDIP (P Suffix)
8-Lead SOIC (S Suffix)
1
Rating
±20 V
±20 V
±1 V
±10 mA
Indefinite
−40°C to +85°C
−65°C to +150°C
−65°C to +150°C
300°C
θ
JA1
103
158
θ
JC
43
43
Unit
°C/W
°C/W
θ
JA
is specified for worst-case mounting conditions, that is, θ
JA
is specified for
device in socket for PDIP package; θ
JA
is specified for device soldered to
printed circuit board for SOIC package.
ESD CAUTION
For supply voltages less than ±20 V, the absolute maximum input voltage is
equal to the supply voltage.
2
The inputs of the OP97 are protected by back-to-back diodes. Current-
limiting resistors are not used in order to achieve low noise. Differential
input voltages greater than 1 V cause excessive current to flow through the
input protection diodes unless limiting resistance is used.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Rev. G | Page 5 of 16
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