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AMC1203
  • AMC1203
  • AMC1203
  • AMC1203
  • AMC1203
  • AMC1203

AMC1203

ACTIVE

±250-mV input, precision current sensing basic isolated modulator with int clock

Texas Instruments AMC1203 Product Info

1 April 2026 6

Parameters

Device type

Current sensing

Peak-to-peak input voltage range (V)

250mV

Interface type

Serial

Sample rate (max) (Msps)

0.04

Rating

Catalog

CMTI (min) (kV/µs)

15

Number of input channels

1

Architecture

Delta-Sigma

SNR (dB)

85

Operating temperature range (°C)

-40 to 105

Power consumption (typ) (mW)

80

SFDR (dB)

95

Isolation rating

Basic

Withstand isolation voltage (VISO) (Vrms)

4000

Working isolation voltage (VIOWM) (Vrms)

560

Transient isolation voltage (VIOTM) (VPK)

4

Creepage (min) (mm)

8

Clearance (min) (mm)

8

Package

SOIC (DW)-16-106.09 mm² 10.3 x 10.3

Features

  • Linear input voltage range: ±280mV
  • Supply voltage range:
    • High side: 4.5V to 5.5V
    • Low side: 4.5V to 5.5V
  • Low DC errors:
    • AMC1203:
      • Offset error: ±1mV (max)
      • Offset drift: ±5µV/°C (max)
      • Gain error: ±2% (max)
      • Gain drift: ±20ppm/°C (max)
    • AMC1203B:
      • Offset error: ±1mV (max)
      • Offset drift: ±5µV/°C (max)
      • Gain error: ±1% (max)
      • Gain drift: ±20ppm/°C (max)
  • Transient immunity: 15kV/µs (min)
  • Internal 10MHz clock generator
  • Safety-related certifications:
    • 3500VPEAK basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 2500VRMS isolation for 1 minute per UL1577
  • Specified temperature range: –40°C to +105°C
  • Linear input voltage range: ±280mV
  • Supply voltage range:
    • High side: 4.5V to 5.5V
    • Low side: 4.5V to 5.5V
  • Low DC errors:
    • AMC1203:
      • Offset error: ±1mV (max)
      • Offset drift: ±5µV/°C (max)
      • Gain error: ±2% (max)
      • Gain drift: ±20ppm/°C (max)
    • AMC1203B:
      • Offset error: ±1mV (max)
      • Offset drift: ±5µV/°C (max)
      • Gain error: ±1% (max)
      • Gain drift: ±20ppm/°C (max)
  • Transient immunity: 15kV/µs (min)
  • Internal 10MHz clock generator
  • Safety-related certifications:
    • 3500VPEAK basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 2500VRMS isolation for 1 minute per UL1577
  • Specified temperature range: –40°C to +105°C

Description

The AMC1203 is a precision, galvanically isolated, delta-sigma (ΔΣ) modulator. The isolation barrier separates parts of the system that operate on different common-mode voltage levels. The isolation barrier is highly resistant to magnetic interference and is certified to provide basic isolation of up to 3500VPEAK according to the DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards.

The input of the AMC1203 is optimized for direct connection to shunt resistors or other low-impedance signal sources. The output bitstream of the AMC1203 is synchronized to the internally generated clock. Combined with a digital low-pass filter, such as a sinc3, OSR 256 filter, the device achieves 16 bits of resolution with an 87dB dynamic range and a 39kSPS data rate.

The AMC1203 is offered in a SOP-8 gull-wing package (DUB), a SOP-8 package (PSA), and a SOIC-16 package (DW). The device is characterized over the ambient temperature range of –40°C to +105°C.

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