OP290

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 Input/output ranges include ground Low supply current (per amplifier), 20 µA maximum High output drive, 5 mA minimum Low input offset voltage, 200 µV typical High open-loop gain, 400 V/mV minimum Outstanding PSRR, 5.6 µV/V maximum Industry standard 8-Mead dual pinout PIN CONNECTIONS OP290 OUT A 1 –IN A 2 +IN A 3 V– 4 AB –+ +– 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 accommodate 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 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...