1% Error, 0-5 V Input, 0-500 mA Output, Low-Side Voltage to Current (V-I) Converter

Reference Design using part OPA735AID by Texas Instruments

Manufacturer

Texas Instruments
  • Application Category
    Amplifiers and Comparators
  • Product Type
    Analog Amplification

Associated Documents

For End Products

  • Electrocardiograph Battery Powered
  • Electronic Scale
  • Portable Medical Instrumentation
  • Sensor and Transducer

Description

  • 1% Error, 0-5 V Input, 0-500 mA output, low-side voltage to current (V-I) converter. This low-side voltage-to-current (V-I) converter delivers a well-regulated current to a floating load. The design uses a small-signal Op-Amp to control an NPN emitter-follower that sources current to the load. The current is accurately regulated by feeding back the voltage drop across a low-side current-sense resistor to the Op-Amp

Key Features

  • Gain
    100 dB
  • Number of Supplies
    Single
  • Supply Voltage
    12 V

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