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 *ELECTRONICALLY ADJUSTED ON CHIP FOR MINIMUM OFFSET VOLTAGE NULL NULL –IN +IN V+ OUTPUT V– * * Figure 1. Simplied Schematic 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 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.

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

Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C

P Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Operating Temperature Range

OP90G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C

Junction Temperature (TJ) . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Lead Temperature (Soldering 60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C

NOTES

1 Absolute Maximum Ratings apply to packaged parts, unless otherwise noted.

2 θ_JA is specified for worst-case mounting conditions; i.e., θ_JA is specified for device in socket for

PIN CONNECTIONS

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