APRS World, LLC

Current Sense Amplifier

 
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Introduction

High side current sense amplifier. Bi-direction. Attaches directly to Deltec MKA shunt or similar. Amplifies shunt voltage by 20 times and adds a 2.5 volt offset. Also provides a voltage sense wire. All wires are fused with 0.125 amp fuses. Amplifier comes standard with 5 foot shielded 24 AWG 300V wire. Can be ordered with no wire or custom length wire. Conformal coating is available as an option.

Wire color codes and functions:

  • Red: +5 volts
  • White: Volt sense (connected to + on shunt)
  • Green: Current sense
  • Black: Ground

There are two parameters you need to calculate the transfer function between voltage output of current sense amplifier and current flowing throug the shunt:

  1. vdrop or rated voltage drop across shunt.
  2. irated or rated current of the shunt.
Using those values, calculate:
m = irated / ( vdrop * 20 )
b = m * -2.5
m and b are used in the equation:
i = m * vsensor + b
Example with sensor outputting 3.75 volts with a 100 amp / 100mV shunt:
m = ( 100 / ( 0.100 * 20 ) ) = 50
b = 50 * -2.5 = -125
i = 50 * 3.75 + -125 = 62.5 amps

This product is based around an Analog Devices ADR8210.

Current sense amplifier, high side, 20x gain, 0 to 60 volts
Product Photo
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US Price: $30.00 USD
Please call us at +1-507-454-2727 to place an order.

High side current sense amplifier. Bi-direction.

This product is based around an Analog Devices ADR8210.
Part Number: APRS6576
Shipping Weight: 0.13 pounds
RoHS: compliant
Origin: USA

APRS World, LLC - Contact Us - we are currently using 0.90 kW

In order to improve design and supply the best product possible, specifications may change without notice.