AD623

Data Sheet FEATURES Easy to use Rail-to-rail output swing Input voltage range extends 150 mV below ground (single supply) Low power, 550 µA maximum quiescent current Gain set with one external resistor Gain range: 1 to 1000 High accuracy dc performance 0.10% gain error (G = 1) 0.35% gain error (G > 1) Noise: 35 nV/√Hz RTI noise at 1 kHz Optimal dynamic specifications 800 kHz bandwidth (G = 1) 20 µs settling time to 0.01% (G = 10) APPLICATIONS Low power medical instrumentation Transducer interfaces Thermocouple amplifiers Industrial process controls Difference amplifiers Low power data acquisition Single and Dual-Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier AD623 GENERAL DESCRIPTION The AD623 is an integrated, single- or dual-supply instrumentation amplifier that delivers rail-to-rail output swing using supply voltages from 2.7 V to 12 V. The AD623 offers user flexibility by allowing single gain set resistor programming and by conforming to the 8-lead industry standard pinout configuration. With no external resistor, the AD623 is configured for unity gain (G = 1), and with an external resistor, the AD623 can be programmed for gains of up to 1000. The accuracy of the AD623 is the result of increasing ac common-mode rejection ratio (CMRR) coincident with increasing gain. Line noise harmonics are rejected due to constant CMRR up to 200 Hz. The AD623 has a wide input common-mode range and amplifies signals with commonmode voltages as low as 150 mV below ground. The A...