a
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–
Precision Low-Voltage Micropower
Operational Amplifier
OP90
PIN CONNECTIONS
8-Lead Hermetic DIP
(Z-Suffix)
8-Lead Epoxy Mini-DIP
(P-Suffix)
8-Lead SO
(S-Suffix)
V
OS
NULL
1
–IN
2
+IN
3
V–
4
8
7
6
5
NC
V+
OUT
V
OS
NULL
GENERAL DESCRIPTION
NC = NO CONNECT
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
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
V–
*ELECTRONICALLY
ADJUSTED ON CHIP
FOR MINIMUM OFFSET VOLTAGE
Figure 1. Simplied Schematic
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
AD [ ANALOG DEVICES ]
