ADA4254

Data Sheet Zero Drift, High Voltage, Low Power, Programmable Gain Instrumentation Amplifier ADA4254 FEATURES Optimized for ADC synchronization Low power: 22 mW (±12 V supplies) 12 binary gain steps from 1/16 V/V to 128 V/V 3 scaling gains: 1 V/V, 1.25 V/V, and 1.375 V/V ±60 V protected input multiplexer Excellent dc precision Low input offset voltage: ±14 μV maximum Low input offset voltage drift: ±0.08 μV/°C maximum Gain calibration via ROM Low gain drift: ±1 ppm/°C maximum High CMRR: 116 dB minimum, G = 1 V/V Low input bias current: ±1.5 nA maximum High input impedance Integrated input EMI filtering Wide input supply range: ±5 V to ±28 V Dedicated output amplifier supplies 7 GPIO ports with special functions Sequential chip select mode External multiplexer control Excitation current sources SPI port with checksum (CRC) support Internal fault detection Wire break test currents On-chip test multiplexer 28-lead, 5 mm × 5 mm LFCSP, 24-lead TSSOP Specified temperature range: −40°C to +105°C APPLICATIONS Universal process control front ends Data acquisition systems Test and measurement systems GENERAL DESCRIPTION The ADA4254 is a zero drift, high voltage, low power programmable gain instrumentation amplifier (PGIA) designed for process control and industrial applications. The ADA4254 features 12 binary weighted gains ranging from 1/16 V/V to 128 V/V and three scaling gain options of 1 V/V, 1.25 V/V, and 1.375 V/V, resulting in 36 possible gain settings. The power consumption of...