AD623(Single and Dual-Supply, Rail-to-Rail,Low Cost Instrumentation Amplifier)IntroductionThe 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. Without any external resistor, the AD623 is set up for unity gain (G = 1). However, by using an external resistor, the AD623 can be configured 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. Constant Common-Mode Rejection Ratio (CMRR) up to 200 Hz ensures the rejection of line noise harmonics. The AD623 has a wide input common-mode range and amplifies signals with common-mode voltages as low as 150 mV below ground. The AD623 maintains optimal performance with dual and single polarity power supplies.FeatureEasy to useRail-to-rail output swingInput voltage range extends 150 mV below ground(single supply)Low power, 550 μA maximum quiescent currentGain set with one external resistorGain range: 1 to 1000High accuracy dc performance0.10% gain error(G= 1)0.35% gain error(G > 1)Noise: 35 nV/√Hz RTI noise at 1 kHzOptimal dynamic specifications800 kHz bandwidth (G= 1)20 μs settling time to 0.01% (G= 10)Appearance
