Automotive ±1-V input, precision reinforced isolated amplifier with integrated DC/DC converter


Product details


Input range (Vp-p) ±1 Isolation working voltage VIOWM (rms) (V) 1200 Isolation transient overvoltage VIOTM (peak) (V) 6000 CMTI (Min) (kV/µs) 75 Input offset (+/-) (Max) (mV) 0.2 Input offset drift (+/-) (Typ) (uV/C) 5 Gain error (+/-) (Max) (%) 0.4 Gain error drift (+/-) (Typ) (ppm/°C) 60 Gain non-linearity (+/-) (Max) (%) 0.075 Small signal bandwidth (Typ) (kHz) 310 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 operation with integrated DC/DC converter
  • ±1-V input voltage range optimized for voltage measurements with high input impedance
  • Fixed gain: 2.0
  • Low DC errors:
    • Gain error: ±0.2% (max)
    • Gain drift: ±45 ppm/°C (max)
    • Offset error: ±0.3 mV (max)
    • Offset drift: ±4 µV/°C (max)
    • Nonlinearity: ±0.02% (max)
  • High CMTI: 85 kV/µs (min)
  • System-level diagnostic features
  • Safety-related certifications:
    • 6000-VPK reinforced isolation per DIN VDE V 0884-11 (VDE V 0884-11): 2017-01
    • 4250-VRMS isolation for 1 minute per UL1577
  • Meets CISPR-11 and CISPR-25 EMI standards
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The AMC3330-Q1 is a precision, isolated amplifier with a fully integrated, isolated DC/DC converter that allows single-supply operation from the low-side of the device. The reinforced capacitive isolation barrier is certified according to VDE V 0884-11 and UL1577 and separates sections of the system that operate on different common-mode voltage levels and protects low-voltage domains from damage.

The input of the AMC3330-Q1 is optimized for direct connection to high-impedance, voltage-signal sources such as a resistor-divider network to sense high-voltage signals. The integrated isolated DC/DC converter allows measurement of non-ground-referenced signals and makes the device a unique solution for noisy, space-constrained applications.

The excellent performance of the device supports accurate voltage monitoring and control. The integrated DC/DC converter fault-detection and diagnostic output pin of the AMC3330-Q1 simplify system-level design and diagnostics.

The AMC3330-Q1 is specified over the temperature range of –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet AMC3330-Q1 Precision, ±1-V Input, Reinforced Isolated Amplifier With Integrated DC/DC Converter datasheet (Rev. A) Oct. 22, 2020
Application note Best Practices to Attenuate AMC3301 Family Radiated Emissions EMI Jun. 20, 2021
Technical article Simplify your isolated current and voltage sensing designs with single-supply isolated amplifiers and ADCs Oct. 26, 2020
User guide AMC3301, AMC3302, and AMC3330 Evaluation Module User's Guide (Rev. B) Sep. 03, 2020
Application note Isolated current-measurement circuit with ±250-mV input and differential output Jul. 23, 2020
Application note Isolated voltage-measurement circuit with ±250-mV input and differential output Jun. 28, 2020
White paper Comparing shunt- and Hall-based current-sensing solutions in onboard chargers an (Rev. A) Mar. 19, 2019
White paper Comparing isolated amplifiers and isolated modulators (Rev. A) Feb. 28, 2019
Application note Comparing shunt- and hall-based isolated current-sensing solutions in HEV/EV (Rev. B) Jan. 17, 2019
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 AMC3330 evaluation module (EVM) is an evaluation platform for the AMC3330 product, a precision isolated amplifier with an integrated DC/DC converter that powers the high side of the amplifier. AMC3330 is a 7-kV reinforced isolated amplifier designed for use in bipolar voltage-measuring (...)

  • Integrated DC/DC converter for high-side power
  • Reinforced isolated amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 2
  • ±1-V input range

Design tools & simulation

SBAM446.TSC (78 KB) - TINA-TI Spice Model
PSpice® for TI design and simulation tool
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
  • (...)
SBAR013A.ZIP (290 KB)

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