SLAS986D November 2014 – February 2018 AMC7836
The AMC7836 features a monitoring system centered on a 12-bit SAR (successive approximation register) ADC fronted by a 22-channel multiplexer and an on-chip track-and-hold circuit. The monitoring systems is capable of sensing up to 16 external bipolar inputs (–12.5 to 12.5 V range), five external unipolar inputs (0 to 5 V range), and an internal analog temperature sensor.
The ADC operates from an internal 2.5 V reference (Vref, measured at the REF_CMP pin) and the input range is 0 V to 2 × Vref. The external bipolar inputs to the ADC are internally mapped to this range. The ADC timing signals are derived from an on-chip temperature-compensated oscillator. The conversion results can be accessed through the device serial interface.