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Current Sensor Scaling in external Current sensor with DRV8301

Rahul Sharma
Expert 2725 points

Other Parts Discussed in Thread: DRV8301, MOTORWARE

Hi chris and all,

i want to use an external current sensor (HASS s-300). 

It has input of 5V and sensitivity is 2.083 mV/A and range is +/-900A. How can i scale down its output e.g. (0V to 5V) to (0V to 3.3V)? should i have to apply voltage divider?

Also I want to use this with DRV8301 board by eliminating Ia,Ib,Ic wires connection of DRV8301 with Instaspin and placing 3 wires of HASS s-300 sensor.

To use this should i have to only make change in USER_ADC_FULL_SCALE_CURRENT (1800);? and USER_IQ_FULL_SCALE_CURRENT (900);

Thanks.