Part Number:DRV8848
I would like to use the Vref pin to control the speed of the motor. I have a DAC driving the Vref pin and a set sense resistor of 200mOhms.
In the DRV8848 datasheet, it is recommended to keep Vref between 1V and 3.3V. And Between 0V and 1V works but "accuracy is degraded". I did not see anything in the datasheet that specifies what the accuracy is in either range.
My application does not require high accuracy or anything, but it would be nice to know what is meant by degraded accuracy. Does TI have any number for this? Is it really significant?
I plan on having a Vref low limit of 100mV. Which would be about 75mA current regulation. Full range would be 100mV to 2.7V.
