描述 Description

ET85502 is a dual high-precision amplifiers featuring rail-to-rail input and output swings respectively,has ultra low offset, drift, and bias current. Either single or dual supplies can be used in the range from 2.7V to 5V with a single supply.ET85502 provides the benefits previously found only in expensive auto-zeroing or chopper-stabilized amplifiers. These new zero-drift amplifiers combine low cost with high accuracy. No external capacitors are required.ET85502 is perfectly suited for applications where error sources cannot be tolerated, since the offset voltage is only 1μV and the drift is 0.005 μV/°C. With nearly zero drift over operating temperature range, medical equipment, temperature, position and pressure sensors, and strain gauge amplifiers all benefit greatly . The rail-to-rail input and output swings provided by the ET85502 make both high-side and low-side sensing easy.ET85502 is specified for the extended industrial/automotive temperature range (-40°C to +125°C) . ET85502 is available in MSOP8 and SOP8 packages.

特性 Features

? Low offset voltage : 1μV

? Input offset drift : 0.005 μV/°C

? Overload recovery time : 50 μs

? Low supply current : 770 μA/CH

? High gain, CMRR, PSRR : 130 dB

? Ultralow input bias current : 20 pA

? No external capacitors required

? 2.7V to 5.0Vsingle-supply operation

應(yīng)用 Application

? Temperature sensors
? Pressure sensors
? Precision current sensing
? Strain gauge amplifiers
? Medical instrumentation
? Thermocouple amplifiers