OPA373AIDBVT

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1. Description

The OPA373AIDBVT and OPA374 families of operational amplifiers are low power and low cost with excellent bandwidth (6.5 MHz) and slew rate (5 V/µs). The input range extends 200 mV beyond the rails and the output range is within 25 mV of the rails. The speedpower ratio and small size make them ideal for portable and battery-powered applications. The OPA373AIDBVT family includes a shutdown mode. Under logic control, the amplifiers can be switched from normal operation to a standby current that is less than 1 µA. The OPA373AIDBVT and OPA374 families of operational amplifiers are specified for single or dual power supplies of 2.7 V to 5.5 V, with operation from 2.3 V to 5.5 V. All models are specified for –40°C to 125°C.

2. Features

    1. Low Offset: 5 mV (Maximum)

    2. Low IB: 10 pA (Maximum)

    3. High Bandwidth: 6.5 MHz

    4. Rail-to-Rail Input and Output

    5. Single Supply: 2.3 V to 5.5 V

    6. Shutdown: OPAx373

    7. Specified up to 125°C

    8. Microsize Packages: 5-Pin SOT-23, 6-Pin SOT-23, 8-Pin SOT-23, and 10-Pin VSON

3. Applications

    1. Portable Equipment

    2. Battery-Powered Devices

    3. Active Filters

    4. Driving A/D Converters

4. Application Information

The OPA373AIDBVT and OPA374 series op amps are unity-gain stable and suitable for a wide range of general-purpose applications. Rail-to-rail input and output make them ideal for driving sampling analog-to-digital converters (ADCs). Excellent AC performance makes them well-suited for audio applications. The class AB output stage is capable of driving 100-kΩ loads connected to any point between V+ and ground. The input common-mode voltage range includes both rails, allowing the OPA373AIDBVT and OPA374 series op amps to be used in virtually any single-supply application up to a supply voltage of 5.5 V. Rail-to-rail input and output swing significantly increases dynamic range, especially in low-supply applications. Power-supply pins must be bypassed with 0.01-µF ceramic capacitors.