Automotive ±50-mV input, precision reinforced isolated amplifier with integrated DC/DC converter


Product details


Input range (Vp-p) ±0.05 Isolation working voltage VIOWM (rms) (V) 1200 Isolation transient overvoltage VIOTM (peak) (V) 6000 CMTI (Min) (kV/µs) 85 Input offset (+/-) (Max) (mV) 0.10 Input offset drift (+/-) (Typ) (uV/C) 0.15 Gain error (+/-) (Max) (%) 0.3 Gain error drift (+/-) (Typ) (ppm/°C) 15 Gain non-linearity (+/-) (Max) (%) 0.03 Small signal bandwidth (Typ) (kHz) 334 Rating Automotive Operating temperature range (C) -40 to 125 open-in-new Find other Isolated amplifiers

Package | Pins | Size

SO-MOD (DWE) 16 106 mm² 10.3 x 10.3 open-in-new Find other Isolated amplifiers


  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 3.3-V or 5-V single supply with integrated DC/DC converter
  • ±50-mV input voltage range optimized for current measurement using shunt resistors
  • Fixed gain: 41
  • Low DC errors:
    • Offset voltage: ±50 µV (maximum)
    • Offset drift: ±0.5 µV/°C (maximum)
    • Gain error: ±0.2% (maximum)
    • Gain error drift: ±35 ppm/°C (maximum)
    • Nonlinearity: ±0.03% (maximum)
  • High CMTI: 95 kV/µs (minimum)
  • System-level diagnostic features
  • Meets CISPR-11 and CISPR-25 EMI standards
  • Safety-related certifications:
    • 6000-VPK reinforced isolation per DIN VDE V 0884-11
    • 4250-VRMS isolation for 1 minute per UL1577
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The AMC3302-Q1 is a precision, isolated amplifier optimized for shunt-based current measurements. The fully integrated, isolated DC/DC converter allows single-supply operation from the low-side of the device, which makes the device a unique solution for space-constrained applications. The reinforced capacitive isolation barrier is certified according to VDE V 0884-11 and UL1577 and supports a working voltage of up to 1.2 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 AMC3302-Q1 is optimized for direct connection to a low-impedance shunt resistor or another low-impedance voltage source with low signal levels. The excellent DC accuracy and low temperature drift supports accurate current measurements in the temperature range from –40°C to +125°C.

The integrated DC/DC converter fault-detection and diagnostic output pin of the AMC3302-Q1 simplify system-level design and diagnostics.

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Technical documentation

Design & development

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Hardware development

document-generic User guide

The AMC3302 evaluation module (EVM) is a platform for evaluating the AMC3302, a precision isolated amplifier with an integrated DC/DC converter, which powers the high side of the amplifier. AMC3302 is a 7-kV reinforced isolated amplifier designed for use in current shunt measuring applications.

A (...)

  • Integrated DC/DC converter for high-side power
  • Reinforced isolated amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 41
  • ±50-mV input 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

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