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a
Precision Low-Voltage Micropower
Operational Amplifier
OP90
FEATURES
Single/Dual Supply Operation: 1.6 V to 36 V,
؎0.8 V to ؎18 V
True Single-Supply Operation; Input and Output
Voltage Ranges Include Ground
Low Supply Current: 20 A Max
High Output Drive: 5 mA Min
Low Input Offset Voltage: 150 V Max
High Open-Loop Gain: 700 V/mV Min
Outstanding PSRR: 5.6 V/V Max
Standard 741 Pinout with Nulling to V–
GENERAL DESCRIPTION
The OP90 is a high performance, micropower op amp that
operates from a single supply of 1.6 V to 36 V or from dual
supplies of ± 0.8 V to ± 18 V. The input voltage range includes
the negative rail allowing the OP90 to accommodate input
signals down to ground in a single-supply operation. The OP90’s
output swing also includes a ground when operating from a
single-supply, enabling “zero-in, zero-out” operation.
The OP90 draws less than 20 µA of quiescent supply current,
while able to deliver over 5 mA of output current to a load. The
input offset voltage is below 150 µV eliminating the need for
PIN CONNECTIONS
8-Lead Hermetic DIP
(Z-Suffix)
8-Lead Epoxy Mini-DIP
(P-Suffix)
8-Lead SO
(S-Suffix)
VOS NULL 1
–IN 2
8 NC
7 V+
+IN 3
V– 4
6 OUT
5 VOS NULL
NC = NO CONNECT
external nulling. Gain exceeds 700,000 and common-mode
rejection is better than 100 dB. The power supply rejection
ratio of under 5.6 µV/V minimizes offset voltage changes experi-
enced in battery-powered systems.
The low offset voltage and high gain offered by the OP90 bring
precision performance to micropower applications. The minimal
voltage and current requirements of the OP90 suit it for battery
and solar powered applications, such as portable instruments,
remote sensors, and satellites.
V+
+IN
OUTPUT
IN
**
NULL
NULL
*ELECTRONICALLY ADJUSTED ON CHIP
FOR MINIMUM OFFSET VOLTAGE
Figure 1. Simplied Schematic
V
REV. A
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2002

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OP90–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (VS = ؎1.5 V to ؎15 V, TA = 25؇C, unless otherwise noted.)
Parameter
INPUT OFFSET VOLTAGE
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
LARGE-SIGNAL
VOLTAGE GAIN
INPUT VOLTAGE RANGE1
OUTPUT VOLTAGE SWING
COMMON-MODE
REJECTION
POWER SUPPLY
REJECTION RATIO
SLEW RATE
SUPPLY CURRENT
CAPACITIVE LOAD
STABILITY2
Symbol Conditions
VOS
IOS
IB
AVO
AVO
AVO
AVO
AVO
IVR
VO
VOH
VOL
CMR
CMR
VCM = 0 V
VCM = 0 V
VS = ± 15 V, VO = ± 10 V
RL = 100 k
RL= 10 k
RL = 2 k
V+ = 5 V, V– = 0 V,
1 V < VO < 4 V
RL = 100 k
RL = 10 k
V+ = 5 V, V– = 0 V
VS = ± 15 V
VS = ± 15 V
RL = 10 k
RL = 2 k
V+ = 5 V, V– = 0 V
RL = 2 k
V+ = 5 V, V– = 0 V
RL = 10 k
V+ = 5 V, V– = 0 V,
0 V < VCM < 4 V
VS = ± 15 V,
–15 V < VCM < 13.5 V
PSRR
SR
ISY
ISY
VS = ± 15 V
VS = ± 1.5 V
VS = ± 15 V
AV = 1
No Oscillations
OP90A/E
Min Typ Max
50 150
0.4 3
4.0 15
700 1200
350 600
125 250
200 400
100 180
0/4
–15/13.5
± 14 ± 14.2
± 11 ± 12
4.0 4.2
100 500
90 110
100 130
1.0 5.6
5 12
9 15
14 20
250 650
OP90G
Min Typ Max Unit
125 450 µV
0.4 5 nA
4.0 25 nA
400 800
200 400
100 200
V/mV
V/mV
V/mV
100 250
70 140
0/4
–15/13.5
V/mV
V/mV
V
V
±14 ± 14.2
±11 ± 12
V
V
4.0 4.2
V
100 500 µV
80 100
90 120
dB
dB
3.2 10 µV/V
5 12
V/ms
9 15 µA
14 20 µA
250 650
pF
INPUT NOISE VOLTAGE
en p-p
INPUT RESISTANCE
DIFFERENTIAL MODE
RIN
INPUT RESISTANCE
COMMON-MODE
RINCM
NOTES
1Guaranteed by CMR test.
2Guaranteed but not 100% tested.
Specifications subject to change without notice.
fO = 0.1 Hz to 10 Hz
VS = ± 15 V
VS = ± 15 V
VS = ± 15 V
3
30
20
3 µV p-p
30 M
20 G
–2– REV. A

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ELECTRICAL CHARACTERISTICS (VS = ؎1.5 V to ؎15 V, –55؇C Յ TA Յ +125؇C, unless otherwise noted.)
Parameter
Symbol
Conditions
Min Typ Max
INPUT OFFSET VOLTAGE
AVERAGE INPUT OFFSET
VOLTAGE DRIFT
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
LARGE-SIGNAL
VOLTAGE GAIN
VOS
TCVOS
IOS
IB
AVO
AVO
INPUT VOLTAGE RANGE* IVR
OUTPUT VOLTAGE SWING VO
COMMON-MODE
REJECTION
VOH
VOL
CMR
POWER SUPPLY
REJECTION RATIO
PSRR
VCM = 0 V
VCM = 0 V
VS = ± 15 V, VO = ± 10 V
RL = 100 k
RL = 10 k
RL = 2 k
V+ = 5 V, V– = 0 V,
1 V < VO < 4 V
RL = 100 k
RL = 10 k
V+ = 5 V, V– = 0 V
VS = ± 15 V
VS = ± 15 V
RL = 10 k
RL = 2 k
V+ = 5 V, V– = 0 V
RL = 2 k
V+ = 5 V, V– = 0 V
RL = 10 k
V+ = 5 V, V– = 0 V,
0 V < VCM < 3.5 V
VS = ± 15 V,
15 V < VCM < 13.5 V
225
125
50
100
50
0/3.5
–15/13 5
± 13.5
± 10.5
3.9
85
95
80
0.3
1.5
4.0
400
240
110
200
110
± 13.7
± 11.5
4.1
100
105
115
3.2
400
2.5
5
20
500
10
SUPPLY CURRENT
NOTE
*Guaranteed by CMR test.
ISY VS = ± 1.5 V
VS = ± 15 V
15 25
19 30
OP90
Unit
µV
µV/°C
nA
nA
V/mV
V/mV
V/mV
V/mV
V/mV
V
V
V
V
V
µV
dB
dB
µV/V
µA
µA
REV. A
–3–

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OP90
ELECTRICAL CHARACTERISTICS (VS = ؎1.5 V to ؎15 V, –25؇C Յ TA Յ +85؇C for OP90E/F, –40؇C Յ TA Յ +85؇C for
OP90G, unless otherwise noted.)
Parameter
INPUT OFFSET VOLTAGE
AVERAGE INPUT OFFSET
VOLTAGE DRIFT
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
LARGE-SIGNAL
VOLTAGE GAIN
INPUT VOLTAGE RANGE*
OUTPUT VOLTAGE SWING
COMMON-MODE
REJECTION
POWER SUPPLY
REJECTION RATIO
SUPPLY CURRENT
NOTE
*Guaranteed by CMR test.
Symbol Conditions
VOS
TCVOS
IOS
IB
AVO
AVO
IVR
VO
VOH
VOL
CMR
VCM = 0 V
VCM = 0 V
VS = ± 15 V, VO = ± 10 V
RL = 100 k
RL = 10 k
RL = 2 k
V+ = 5 V, V– = 0 V,
1 V < VO < 4 V
RL = 100 k
RL = 10 k
V+ = 5 V, V– = 0 V
VS = ± 15 V
VS = ± 15 V
RL = 10 k
RL = 2 k
V+ = 5 V, V– = 0 V
RL = 2 k
V+ = 5 V, V– = 0 V
RL = 10 k
V+ = 5 V, V– = 0 V,
0 V < VCM < 3.5 V
VS = ± 15 V,
–15 V < VCM < 13.5 V
PSRR
ISY
VS = ± 1.5 V
VS = ± 15 V
OP9OE
Min Typ Max
70 270
0.3 2
0.8 3
4.0 15
500 800
250 400
100 200
150 280
75 140
0/3.5
–15/13.5
± 13.5 ± 14
± 10.5 ± 11.8
3.9 4.1
100 500
80 100
100 120
10 5.6
13 25
17 30
OP9OG
Min Typ Max
180 675
Unit
µV
1.2 5
1.3 7
4.0 25
µV/°C
nA
nA
300 600
150 250
75 125
V/mV
V/mV
V/mV
80 160
40 90
0/3.5
–15/13.5
V/mV
V/mV
V
V
± 13.5
± 10.5
± 14
± 11.8
V
V
3.9 4.1
V
100 500 µV
80 100
90 110
dB
dB
5.6 17.8 µV/V
12 25
16 30
µA
µA
–4– REV. A

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ABSOLUTE MAXIMUM RATINGS1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V
Differential Input Voltage . . . . [(V–) – 20 V] to [(V+) + 20 V]
Common-Mode Input Voltage . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . [(V–) – 20 V] to [(V+) + 20 V]
Output Short-Circuit Duration . . . . . . . . . . . . . . . . Indefinite
Storage Temperature Range
Z Package . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
P Package . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Operating Temperature Range
OP90A . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C
OP90E . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25°C to +85°C
OP90G . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
Junction Temperature (TJ) . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering 60 sec) . . . . . . . . . . . . . . 300°C
Package Type
JA2 JC Unit
8-Lead Hermetic DIP (Z) 148 16 °C/W
8-Lead Plastic DIP (P) 103 43 °C/W
8-Lead SO (S)
158 43 °C/W
NOTES
1Absolute Maximum Ratings apply to packaged parts, unless otherwise noted.
2JA is specified for worst-case mounting conditions; i.e., JA is specified for
device in socket for CerDIP, and P-DIP; JA is specified for devices soldered to
printed circuit board for SO package.
ORDERING GUIDE
Package Options
TA = 25؇C
VOS Max
(mV)
CERDIP
8-Lead
Plastic
8-Lead
150 OP90AZ/883*
150 OP90EZ*
450 OP90GP
450 OP90GS
*Not for new design, obsolete April 2002.
OP90
Operating
Temperature
Range
MIL
IND
XIND
XIND
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the OP90 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
REV. A
–5–