Hello Team,
Good day.
My customer is planning to use the ACF2101 and wanted to clarify few things. According to the datasheet the integrator output voltage range is -10V to 0.5V. All of the application examples show input current flowing into the integrator. Is there any issue with reversing the polarity?
They have a current sensing toroid and they were able to reverse the current direction and the integrated output voltage was just a mirror image. Designing their application so that the integrated output voltages are positive eliminates the need for inverting amps downstream when they are trying to sample with a microprocessor ADC. They just need to know if long term the chip could be damaged in this mode. For the test, they were using +/- 12V power rails on the chip. Plan on adding clamping diodes to keep the output voltage levels within the operating voltage range of the micro ADC.
Also is there any reason the chip can't be powered with +/-5V. Their integration times will always be less than 4us so with a slew rate of 1V/us the largest output they would generate +/-4V. Again the spec sheet says V- between -18V and -10V.
Regards,
Renan