AMC1106M05/AMC1106E05 Delta-Sigma Modulators

Texas Instruments' AMC1106M05 and AMC1106E05 are small, basic, isolated delta-sigma modulator with ±50 mV input and CMOS interface

Image of Texas Instruments' AMC1106M05 Delta-Sigma ModulatorTexas Instruments' AMC1106 devices are precision, delta-sigma (ΔΣ) modulators with the output separated from the input circuitry by a capacitive isolation barrier that is highly resistant to magnetic interference.

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, TMS320F2807x, and 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 V, 3.3 V, or 5 V power supply (DVDD).

The AMC1106 is specified over the extended industrial temperature range of -40°C to +125°C.

Features
  • ±50 mV input voltage range optimized for current measurement with shunt resistors
  • Manchester coded or uncoded bitstream options
  • Excellent DC performance for high-precision sensing on system level:
    • Offset error and drift: ±50 µV, ±1 µV/°C (max.)
    • Gain error and drift: ±0.2%, ±40 ppm/°C (max.)
  • 3.3 V operation for reduced power dissipation on both sides of the isolation barrier
  • System-level diagnostic features
  • High electromagnetic field immunity
  • Safety-related certifications:
    • 5657 VPK basic isolation per DIN V VDE V 0884-11 (VDE V 0884-11): 2017-01
    • 4000 VRMS isolation for 1 minute per UL1577
    • CAN/CSA No. 5A-component acceptance service notice, IEC 60950-1, and IEC 60065 end equipment standards

Applications

  • Shunt-resistor-based current sensing in 3-phase electricity meters

AMC1106M05/AMC1106E05 Delta-Sigma Modulators

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
AMC1106E05DWV datasheet linkSMALL BASIC ISOLATED DELTA-SIGMAAMC1106E05DWVSMALL BASIC ISOLATED DELTA-SIGMA128 - Immediate
256 - Factory Stock
AMC1106E05DWV product page link
AMC1106M05DWV datasheet linkSMALL BASIC ISOLATED DELTA-SIGMAAMC1106M05DWVSMALL BASIC ISOLATED DELTA-SIGMA179 - Immediate
320 - Factory Stock
AMC1106M05DWV product page link
AMC1106E05DWVR datasheet linkAMC1106E05DWVAMC1106E05DWVRAMC1106E05DWV3000 - Factory StockAMC1106E05DWVR product page link
AMC1106M05DWVR datasheet linkAMC1106M05DWVAMC1106M05DWVRAMC1106M05DWV10000 - Factory StockAMC1106M05DWVR product page link

Evaluation Board

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
AMC1306EVM datasheet linkAMC1306 SMALL REINFORCED ISOLATEAMC1306EVMAMC1306 SMALL REINFORCED ISOLATE6 - Immediate
16 - Factory Stock
AMC1306EVM product page link
Published: 2017-12-22