I need to implement low-side current sensing for a H-bridge motor driver. While there are dedicated current sense amplifiers such as TI’s INA180, can I use a simple difference amplifier for this with equivalent gain of the INA180? What are the specific advantages of dedicated CS amplifiers?
There are issues with stock availability of the INA180 variant with specific gain in my part of the world. However opamps such as the MCP6001 are widely available and inexpensive.