±250mV input functionally isolated delta-sigma modulator for current sensing

The AMC0106M25 is a

precision, functionally isolated, delta-sigma modulator with a ±250mV input voltage range. The isolation barrier

separates parts of the system that operate on different common-mode voltage levels. The

isolation barrier supports a working voltage up to 200VRMS / 280VDC

and transient overvoltages up to 570VRMS / 800VDC.

With a small package size and low input

voltage range, the AMC0106M25 is designed for high accuracy,

isolated current sensing in space-constrained applications. The galvanic isolation barrier

supports high common-mode transients and allows for isolating sensitive control circuitry

from switching noise from the power stage.

The output bitstream of the AMC0106M25 is synchronized to an external clock. Combined with

a sinc3, OSR 256 filter, the device achieves 16 bits of resolution with an 88dB dynamic range and a 78kSPS data rate.

The AMC0106M25 is available in an 8-pin, 0.65mm pitch VSON

package and is specified over the extended industrial temperature range of –40°C to

+125°C.