OP290 Datasheet | Analog Devices

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 Input/output ranges include ground Low supply current (per amplifier), 20 µA maximum High output drive, 5 m A minimum Low input offset voltage, 200 µV typical High open-loop gain, 400 V/m V minimum Outstanding PSRR, 5.6 µV/V maximum Industry standard 8-Mead dual pinout PIN CONNECTIONS OUT A 1 - IN A 2 +IN A 3 V- 4 - + +- 8 V+ 7 OUT B 6 - IN B 5 +IN B Figure 1. PDIP (P-Suffix) 00327-001 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 acmodate input signals down to ground in single-supply operation. The OP290 output 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 being able to deliver over 5 m A of output current to a load. Input offset voltage is below 200 μV, eliminating the need for external nulling. Gain exceeds 700,000 and mon-mode rejection is better than 100 d B. 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. V+ +IN - IN NULL NULL ELECTRONICALLY ADJUSTED ON CHIP FOR MINIMUM OFFSET VOLTAGE Figure 2. Simplified Schematic (One of Two Amplifiers Is Shown) OUTPUT V- 00327-002 Rev. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityi...