Automotive Reinforced Isolated Delta-Sigma modulator for voltage sensing with 1V input range

The AMC1333M10-Q1 is a precision, delta-sigma (ΔΣ) modulator with the output

separated from the input circuitry by an isolation barrier that is highly resistant

to magnetic interference. This barrier is certified to provide reinforced isolation

of up to 8000VPEAK according to the DIN EN IEC 60747-17 (VDE 0884-17) and

UL1577 standards, and supports a working voltage up to 1.5kVRMS. The

isolation barrier separates parts of the system that operate on different

common-mode voltage levels and protects the low-voltage side from voltages that

causes electrical damage or be harmful to an operator.

The AMC1333M10-Q1 wide, bipolar, ±1V input voltage range and high input

resistance support direct connection of the device to resistive dividers in

high-voltage applications. The output bitstream of the AMC1333M10-Q1 is synchronized to the internally generated clock. By using

an integrated digital filter (such as those in the TMS320F2807x or TMS320F2837x microcontroller families) to decimate the bitstream, the

device achieves 16 bits of resolution with a dynamic range of 87dB at a data rate of

39kSPS.

The AMC1333M10-Q1 is offered in a 8-pin, wide-body, SOIC package and is fully

specified over the extended industrial temperature range of –40°C to +125°C.