The AMC1106 is a precision, delta-sigma (ΔΣ) modulator with the output separated from the
input circuitry by a capacitive isolation barrier that is highly resistant to magnetic
The input stage of the AMC1106 is optimized for direct connection to shunt resistors or
other low voltage-level signal sources commonly used in multi-phase electricity meters to achieve
excellent ac and dc performance. The device low input voltage range of ±50-mV allows use of small
shunt resistor values to minimize power dissipation. Decimate the output bitstream of the AMC1106
with an appropriate digital filter. The MSP430F67x,
TMS320F2837x microcontrollers, and the
AMC1210 integrate these digital filters for
seamless operation with the AMC1106.
On the high-side, the modulator is supplied by a
3.3-V or 5-V power supply (AVDD). The isolated digital interface operates from a 3.0-V,
3.3-V, or 5-V power supply (DVDD).
The AMC1106 is specified over the extended industrial temperature range of –40°C to