OPA378AIDBVR Integrated Circuits (ICs)

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1. DESCRIPTION

The OPA378AIDBVR and OPA2378 represent a new generation of Zerø-Drift, microPOWER™ operational amplifiers that use a proprietary auto-calibration technique to provide minimal input offset voltage (20μV) and offset voltage drift (0.1μV/°C). The combination of low input voltage noise, high gain bandwidth (900kHz), and low power (150μA max) enable these devices to achieve optimum performance for low-power precision applications. In addition, the excellent PSRR performance, coupled with a wide input supply range of 2.2V to 5.5V and rail-to-rail input and output, makes it an outstanding choice for single-supply applications that run directly from batteries without regulation. The OPA378AIDBVR (single version) is available in both a microSIZE SC70-5 and a SOT23-5 package. The OPA2378 (dual version) is offered in a SOT23-8 package. All versions are specified for operation from –40°C to +125°C.

2. FEATURES

    1. LOW NOISE

        – 0.4μVPP, 0.1Hz to 10Hz

        – 20nV/√Hz at 1kHz

    2. ZERØ-DRIFT SERIES

        – LOW OFFSET VOLTAGE: 20μV

        – LOW OFFSET DRIFT: 0.1μV/°C

    3. QUIESCENT CURRENT: 125μA

    4. GAIN BANDWIDTH: 900kHz

    5. RAIL-TO-RAIL INPUT/OUTPUT

    6. EMI FILTERING

    7. SUPPLY VOLTAGE: 2.2V to 5.5V 

    9. microSIZE PACKAGES: SC70 and SOT23

3. APPLICATIONS

    1. PORTABLE MEDICAL DEVICES

        – GLUCOSE METERS

        – OXYGEN METERING

        – HEART RATE MONITORS

    2. WEIGH SCALES

    3. BATTERY-POWERED INSTRUMENTS

    4. THERMOPILE MODULES

    5. HANDHELD TEST EQUIPMENT

    6. SENSOR SIGNAL CONDITIONING