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TPA3530

Femtoampere Input Bias Current Amplifier

Overview

The TPA3530 operational amplifier features a femtoampere-level input bias current. It operates from 4.5 V to 16 V (±2.25 V to ±8 V) and features rail-to-rail output swing in addition to an input common-mode range that includes ground. The integrated guard buffer isolates the input pins from leakage in the printed circuit board. It minimizes board component count, and enables easy system design.

The TPA3530 is ideal for portable medical and industrial applications that require low bias current analog front-ends performance such as photodiode transimpedance and chemical sensor interface circuits.

The TPA3530 is available in the SOP8 package and is specified over the industrial temperature range (–40°C to +125°C). The unique pinout is optimized to prevent signals from coupling among the sensitive input pins, the power supplies, and the output pin while enabling easy routing of the guard ring traces.


  • Status

    Production

  • Rating

    Industrial

  • Channel

    1

  • Supply Voltage (Min)

    4.5

  • Supply Voltage (Max)

    16

  • Iq per channel (Max)(μA)

    1400

  • GBW (Typ)(MHz)

    2.1

  • Slew Rate (Typ)(V/μs)

    1.4

  • Rail-Rail In

    No,to V- only

  • Rail-Rail Out

    Yes

  • Ishort (Typ)(mA)

    31

  • Vos (Max)(mV)

    0.1

  • Offset Drift (Typ)(μV/°C)

    2

  • Ib (typ)(pA)

    /

  • Vn (Typ)(nV/rtHz)

    18

  • Peak Noise at 0.1 to 10Hz (μVpp)

    /

  • Shutdown/Disable

    /

  • Operating Temperature Range (°C)

    -40 to 125

  • Feature

    Low Ib

  • Package

    SOIC-8

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