16-bit Sigma-Delta ADC with internal oscillator and temperature sensor
The MCP3462R-E/ST is a 16-bit Sigma-Delta ADC from Microchip Technology, sampling at 153.6 kSPS. Its architecture combines a 2-input multiplexer with a differential or single-ended front end, feeding a sigma-delta modulator and digital filter — the configuration is MUX-ADC, meaning the mux selects the channel before the converter, not a simultaneous-sampling arrangement. Two on-chip A/D converters operate in parallel, though the input multiplexer limits the effective channel count to two differential or single-ended paths. Reference selection is flexible: the converter accepts either an external precision reference or the internal bandgap reference. The S/H:ADC ratio is 0:2, indicating no dedicated sample-and-hold amplifier ahead of the modulator — the sigma-delta loop's oversampling inherently captures the input signal without a front-end track-and-hold.
Supply range, temperature grade, and package
The -40°C to +125°C operating range covers automotive and industrial ambient, though the die temperature sensor's accuracy should be checked against the system's thermal profile at the high end.