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DRV8885 Current Control

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Hello,

Our customer uses the DRV8885, has some questions about Current Control.

1) about VRREF specification

It is mentioned RREF=18k ohm to 132k ohm in the TEST CONDITIONS.

Is that range the limit of operation?

Or, that range is just TEST CONDITION, so it is possible to use

a resistor out of range value. 

(Of course the VRREF value is out of Spec.)

2) about current accuracy

It is mentioned '+/-6.25% Full-Scale Current Accuracy' at Features.

The customer control the current by using a DAC. So,the customer refer to

the Equation(2) on the datasheet. It is added VRREF term.

Does the accuracy of +/-6.25% include the VRREF variation?

Is it go worse accuracy?

Regards,

Naoki Aoyama


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