Precision, ±50-mV-input, basic isolated amplifier


Product details


Input range (Vp-p) ±0.05 Isolation working voltage VIOWM (rms) (V) 1000 Isolation transient overvoltage VIOTM (peak) (V) 4250 CMTI (Min) (kV/µs) 100 Input offset (+/-) (Max) (mV) 0.05 Input offset drift (+/-) (Typ) (uV/C) 0.15 Gain error (+/-) (Max) (%) 0.2 Gain error drift (+/-) (Typ) (ppm/°C) 3 Gain non-linearity (+/-) (Max) (%) 0.03 Small signal bandwidth (Typ) (kHz) 280 Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Isolated amplifiers

Package | Pins | Size

SOIC (DWV) 8 67 mm² 5.85 x 11.5 open-in-new Find other Isolated amplifiers


  • ±50-mV input voltage range optimized for current measurements using shunt resistors
  • Fixed gain: 41
  • Low DC errors:
    • Offset error: ±50 µV (max)
    • Offset drift: ±0.8 µV/°C (max)
    • Gain error: ±0.2% (max)
    • Gain drift: ±35 ppm/°C (max)
    • Nonlinearity: 0.03% (max)
  • 3.3-V or 5-V operation on high-side and low-side
  • Fail-safe output
  • High CMTI : 100 kV/µs (min)
  • Low EMI, meets CISPR-11 and CISPR-25 standards
  • Safety-related certifications:
    • 4250-VPK basic isolation per DIN VDE V 0884-11: 2017-01
    • 3000-VRMS isolation for 1 minute per UL1577
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The AMC1202 is a precision, isolated amplifier with an output separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide basic galvanic isolation of up to 3 kVRMS according to VDE V 0884-11 and UL1577, and supports a working voltage of up to 1 kVRMS.

The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from hazardous voltages and damage.

The input of the AMC1202 is optimized for direct connection to a low-impedance shunt resistor or other low-impedance voltage source with low signal levels. The excellent DC accuracy and low temperature drift supports accurate current control in PFC stages, DC/DC converters, traction inverters, and OBCs over the full automotive temperature range from –40°C to +125°C.

The integrated missing shunt and missing high-side supply detection features simplify system-level design and diagnostics.

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Technical documentation

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Type Title Date
* Data sheet AMC1202 Precision, ±50-mV Input, Basic Isolated Amplifier datasheet May 17, 2021
User guide AMC130x Evaluation Module User's Guide (Rev. C) Jun. 28, 2018
Technical article Get cerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained (Part 4) Feb. 06, 2015
Technical article Using delta-sigma modulators for isolated high-voltage measurements Jan. 09, 2015
Technical article Part III: Get CerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained Dec. 02, 2014

Design & development

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Hardware development

document-generic User guide

The AMC1302 evaluation module (EVM) is a platform for evaluating the AMC1302, which is a 7-kV reinforced isolation amplifier designed for use in current shunt measuring applications. AMC1302EVM allows the user to explore all the features of the AMC1302 device.

  • Reinforced isolation amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 41
  • ±50-mV input range
  • Low gain error and drift
  • Extended industrial temperature range

Design tools & simulation

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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
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