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4 Channel Current Sense Amplifier – Low and High-Side Voltage Output

₹2,240

This 4-Channel current sense amplifier is designed for cost-optimized applications. This is a current-sense amplifier (also called a current-shunt monitor) that senses the voltage drop across current-sense resistors at common-mode voltages from  –0.2 V to +26 V, independent of the supply voltage. The project was built using  INA4180 chip which integrates a matched resistor gain network in four, fixed-gain  20V/V, this matched gain resistor network minimizes gain error and reduces the temperature drift. The board operates with a single  2.7-V to 5.5-V power supply. The four-channel  INA4180 draws a maximum supply current of  900 µA. Resistors R2, R6, R8, R12, R3, R7, R9, R13 and Capacitor C3, C4, C5, C6 used as input filters. The gain of the amplifier is  20V/V, and external input resistors resulting a  0.9% gain error.


 


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This 4-Channel current sense amplifier is designed for cost-optimized applications. This is a current-sense amplifier (also called a current-shunt monitor) that senses the voltage drop across current-sense resistors at common-mode voltages from  –0.2 V to +26 V, independent of the supply voltage. The project was built using  INA4180 chip which integrates a matched resistor gain network in four, fixed-gain  20V/V, this matched gain resistor network minimizes gain error and reduces the temperature drift. The board operates with a single  2.7-V to 5.5-V power supply. The four-channel  INA4180 draws a maximum supply current of  900 µA. Resistors R2, R6, R8, R12, R3, R7, R9, R13 and Capacitor C3, C4, C5, C6 used as input filters. The gain of the amplifier is  20V/V, and external input resistors resulting a  0.9% gain error.

Features

  • Operating Power Supply 2.7V to 5V DC 10mA
  • Output 0.2V/A (2V @ 10Amps)
  • Common-mode voltage -0.2V To 26V
  • Input offset (±) (max) (µV) 150
  • Input offset drift (±) (typ) (µV/°C) 0.2
  • Voltage gain (V/V) 20
  • CMRR (min) (dB) 84
  • Bandwidth (kHz) 350
  • Gain error (%) 8
  • Gain error drift (±) (max) (ppm/°C)20
  • On Board Power LED
  • Screw Terminal for Current Sense Load
  • Header Connector for Logic supply and Outputs
  • PCB Dimensions 47.78 x 36.20 mm
  • 4 x 2.5MM Mounting Holes

Connections and Other Details

  • CN1: Pin 1 = VCC 2.7V to 5.5V Dc Input, Pin 2 = Output 1, Pin 3 = Output 2, Pin 4 = Output 3, Pin 5 = Output 4, Pin 6 = GND
  • CN2: Pin 1 = Load 1, Pin 2 = GND, Pin 3 = DC 1 Input
  • CN3: Pin 1 = Load 4, Pin 2 = GND, Pin 3 = DC 4 Input
  • CN4: Pin 1 = Load 2, Pin 2 = GND, Pin 3 = DC 2 Input
  • CN5: Pin 1 = Load 3, Pin 2 = GND, Pin 3 = DC 3 Input
  • D1: Power LED

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