Description

Femtoampere Input Bias Current Electrometer Amplifier Features: Low input bias current ±20 fA maximum at TA = 25°C (guaranteed at production test) ±20 fA maximum at −40°C < TA < +85°C ±250 fA maximum at −40°C < TA < +125°C (guaranteed at production test) Low offset voltage: 50 μV maximum over specified CMRR range Offset voltage drift: ±0.13 μV/°C typical, ±0.5 μV/°C maximum Integrated guard buffer with 100 μV maximum offset Low voltage noise density: 14 nV/√Hz at 10 kHz Wide bandwidth: 2 MHz unity-gain crossover Supply voltage: 4.5 V to 16 V (±2.25 V to ±8 V) Operating temperature: −40°C to +125°C Long-term offset voltage drift (10,000 hours): 0.5 μV typical Temperature hysteresis: 1.5 μV typical