OP290_03 Datasheet, PDF (1/12 Pages) Analog Devices – Precision, Low Power, Micropower Dual Operational Amplifier

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Precision, Low Power, Micropower
Dual Operational Amplifier
OP290
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 (Per Amplifier), 20 ␮A Max
High Output Drive, 5 mA Min
Low Input Offset Voltage, 200 ␮V Max
High Open-Loop Gain, 700 V/mV Min
Outstanding PSRR, 5.6 ␮V/V Max
Industry Standard 8-Lead Dual Pinout
Available in Die Form
GENERAL DESCRIPTION
The OP290 is a high performance micropower dual 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. Input voltage range includes the
negative rail allowing the OP290 to accommodate input signals
down to ground in single-supply operation. The OP290’s out-
put swing also includes ground when operating from a single
supply, enabling “zero-in, zero-out” operation.
The OP290 draws less than 20 µA of quiescent supply current
per amplifier, while able to deliver over 5 mA of output current
to a load. Input offset voltage is below 200 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 experienced
in battery-powered systems. The low offset voltage and high gain
offered by the OP290 bring precision performance to micropower
applications. The minimal voltage and current requirements
of the OP290 suit it for battery- and solar-powered applications,
such as portable instruments, remote sensors, and satellites. For
a single op amp, see the OP90; for a quad, see the OP490.
PIN CONNECTIONS
PDIP
(P-Suffix)
OUT A 1
–IN A 2
+IN A 3
V– 4
AB
OP290
8 V+
7 OUT B
6 –IN B
5 +IN B
V+
+IN
OUTPUT
–IN
NULL
NULL
V
ELECTRONICALLY ADJUSTED ON CHIP
FOR MINIMUM OFFSET VOLTAGE
REV. B
Figure 1. Simplified Schematic (one of two amplifiers is shown)
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