OPA128 - Burr-Brown

OPA128 Difet Electrometer-Grade OPERATIONAL AMPLIFIER

The OPA128 is an ultra-low bias current monolithic operational amplifier. Using advanced geometry dielectrically-isolated FET (Difet®) inputs, this monolithic amplifier achieves a performance level exceeding even the best hybrid electrometer amplifiers. Laser-trimmed thin-film resistors give outstanding voltage offset and drift performance. A noise-free casc.

Features

q ULTRA-LOW BIAS CURRENT: 75fA max q q q q LOW OFFSET: 500µV max LOW DRIFT: 5µV/°C max HIGH OPEN-LOOP GAIN: 110dB min HIGH COMMON-MODE REJECTION: 90dB min APPLICATIONS q ELECTROMETER q q q q q MASS SPECTROMETER CHROMATOGRAPH ION GAUGE PHOTODETECTOR RADIATION-HARD EQUIPMENT q IMPROVED REPLACEMENT FOR AD515 AND AD549 DESCRIPTION The OPA128 is an ultra-low bias current monolithic operational amplifier. Using advanced geometry dielectrically-isolated FET (Difet®) inputs, this monolithic amplifier achieves a performance level exceeding even the best hybrid electrometer amplifiers. Laser-trimmed .