DESCRIPTION
The LT®1672/LT1673/LT1674 are ultralow power (IS ≤ 2µA) decompensated (AV ≥ 5) op amps with precision specifications. The extremely low supply current is combined with excellent amplifier specifications: input offset voltage is 375µV maximum with a typical drift of only 0.4µV/°C, input offset current is 100pA maximum. A minimum open-loop gain (AVOL) of 100V/mV ensures that gain errors are small. The devices’ characteristics change little over the supply range of 2.2V to ±15V. Supply rejection is 90dB and the common mode rejection ratio is 90dB. Operation is specified for 3V, 5V and ±15V supplies. Reverse battery protection (–18V min) and inputs that operate above the positive supply make the LT1672/LT1673/LT1674 easy to use in harsh environments.

FEATURES
■ Gain of 5 Stable
■ Low Supply Current: 2µA Max per Amplifier
■ Rail-to-Rail Input and Output
■ Low Offset Voltage: 375µV Max
■ Over-The-TopTM Inputs Operate Above V+
■ Gain Bandwidth Product: 12kHz
■ Wide Supply Range: 2.2V to 36V
■ Single Supply Input Range: –0.3V to 36V
■ Low Input Bias Current: 250pA
■ Low Input Offset Current: 20pA
■ High AVOL: 100V/mV Minimum Driving 100kΩ Load
■ Output Sources and Sinks 500µA Load Current
■ Reverse Battery Protected to 18V

APPLICATIONS
■ Battery- or Solar-Powered Systems
■ Portable Instrumentation
■ Remote Sensor Amplifier
■ Micropower Filter
■ Photodiode Amplifier
■ High Impedance Circuits