Servoflo's Linecard

Package: SOP16(n)

AM402 is a voltage-to-current converter IC with integrated protection functions and voltage source. It converts a differential input voltage into a current output signal with adjustable offset and gain. AM402 is particularly suitable for industrial sensing and signal-conditioning in two- or three-wire applications.

 Input: >50mVFS and single ended
Output: 0/4...20mA

Block Diagram

block402.gifBlock Diagram AM402


  • Wide Supply Voltage Range: 6...35V
  • Wide Operating Temperature Range: -40°C...+85°C
  • Internal Voltage Reference for Transducer Excitation
  • Instrumentation Amplifier Input
  • Adjustable Gain and Offset
  • Analog Current Output: Three Wire (0/4...20mA) or Two Wire Output (4...20mA)
  • Protection Against Reverse Polarity
  • Input Voltage Limitation


  • Sensor Current Transmitter (for example pressure)
  • Programmable Current Source