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Low Power, Precision, Auto-Zero Op Amp
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FEATURES PIN CONFIGURATIONS Low offset voltage: 13 µV maximum
Input offset drift: 0.03 µV/°C
Single-supply operation: 2.7 V to 5.5 V
High gain, CMRR, and PSRR
Low input bias current: 25 pA
Low supply current: 180 µA
Qualified for automotive applications OUT 1 V+ 2 +IN 3 TOP VIEW
(Not to Scale) 4 –IN 06741-002 V– Figure 1. 5-Lead TSOT-23 (UJ-5) NC APPLICATIONS 1 −IN 2 Mobile communications
Portable instrumentation
Battery-powered devices
Sensor interfaces
Temperature measurement
Electronic scales AD8538 8 NC 7 V+ V− 6 OUT
TOP VIEW
4 (Not to Scale) 5 NC NC = NO CONNECT 06741-001 +IN 3 OUT A 1
–IN A 2 The AD8538/AD8539 are very high precision amplifiers featuring
extremely low offset voltage, low input bias current, and low power
consumption. The supply current is less than 215 μA maximum
per amplifier at 5.0 V. Operation is fully specified from 2.7 V to
5.0 V single supply (±1.35 V to ±2.5 V dual supply).
The AD8538/AD8539 operate at very low power making these
amplifiers ideal for battery-powered devices and portable
equipment. …