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AMC3302

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±50-mV input, precision current sensing reinforced isolated amplifier with integrated DC/DC

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Data sheet

AMC3302

ACTIVE
Data sheet Order now

Product details

Device type Current sensing Output type Differential Peak-to-peak input voltage range (V) 0.05 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 4250 Working isolation voltage (VIOWM) (Vrms) 1200 Transient isolation voltage (VIOTM) (VPK) 6000 CMTI (min) (kV/µs) 85 Creepage (min) (mm) 8 Clearance (min) (mm) 8 Input offset (±) (max) (V) 0.0001 Input offset drift (±) (typ) (µV/°C) 0.15 Rating Catalog Operating temperature range (°C) -40 to 125
Device type Current sensing Output type Differential Peak-to-peak input voltage range (V) 0.05 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 4250 Working isolation voltage (VIOWM) (Vrms) 1200 Transient isolation voltage (VIOTM) (VPK) 6000 CMTI (min) (kV/µs) 85 Creepage (min) (mm) 8 Clearance (min) (mm) 8 Input offset (±) (max) (V) 0.0001 Input offset drift (±) (typ) (µV/°C) 0.15 Rating Catalog Operating temperature range (°C) -40 to 125
SO-MOD (DWE) 16 106.09 mm² (10.3 mm × 10.3 mm)
  • 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 (max)
    • Offset drift: ±0.5 µV/°C (max)
    • Gain error: ±0.2% (max)
    • Gain error drift: ±35 ppm/°C (max)
    • Nonlinearity: ±0.03% (max)
  • High CMTI: 95 kV/µs (min)
  • 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
  • Fully specified over the extended industrial temperature range: –40°C to +125°C
  • 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 (max)
    • Offset drift: ±0.5 µV/°C (max)
    • Gain error: ±0.2% (max)
    • Gain error drift: ±35 ppm/°C (max)
    • Nonlinearity: ±0.03% (max)
  • High CMTI: 95 kV/µs (min)
  • 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
  • Fully specified over the extended industrial temperature range: –40°C to +125°C

The AMC3302 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 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 over the extended industrial temperature range from –40°C to +125°C.

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

The AMC3302 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 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 over the extended industrial temperature range from –40°C to +125°C.

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

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* Data sheet AMC3302 High-Precision, ±50-mV Input, Reinforced Isolated Amplifier With Integrated DC/DC Converter datasheet (Rev. B) PDF | HTML Jul 22, 2021
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AB) Jul 15, 2026
Application note AMC High Side Power Supply Options PDF | HTML Oct 15, 2025
Certificate CQC Certificate for AMC33xx Feb 26, 2025
White paper Comparing Isolated Amplifiers and Isolated Modulators (Rev. B) PDF | HTML Jun 4, 2024
Technical article Delivering accurate current sensing for safer solar energy systems and EV chargers PDF | HTML Apr 10, 2024
Application brief Utilizing AMC3311 to Power AMC23C11 for Isolated Sensing and Fault Detection PDF | HTML Nov 9, 2023
White paper How Accurate Sensing Enables Better System Performance and Increased Efficiency (Rev. C) PDF | HTML Oct 22, 2023
Application brief Interfacing a Differential-Output (Isolated) Amp to a Single-Ended Input ADC (Rev. B) PDF | HTML Jun 2, 2023
Application brief Shunt Resistor Selection for Isolated Data Converters PDF | HTML May 4, 2023
Circuit design Isolated Current-Sensing Circuit With Front-End Gain Stage PDF | HTML Apr 24, 2023
Certificate UL Certificate of Compliance Vol4 Sec5 E181974 (Rev. A) Jan 23, 2023
Application note Design Considerations for Current Sensing in DC EV Charging Applications PDF | HTML Dec 13, 2022
Application note Best Practices to Attenuate AMC3301 Family Radiated Emissions EMI (Rev. A) PDF | HTML Sep 22, 2022
Circuit design Isolated Current-Sensing Circuit With ±50-mV Input and Single-Ended Output PDF | HTML Jul 28, 2022
Application brief Achieving High-Performance Isolated Current and Voltage Sensing in Server PSUs PDF | HTML Jul 21, 2022
Circuit design Isolated Current-Sensing Circuit With ±50-mV Input and Differential Output PDF | HTML Jun 30, 2022
Certificate AMC3302EVM EU RoHS Declaration of Conformity (DoC) (Rev. B) Jun 29, 2022
Application note Isolated Voltage-Measurement Circuit With ±250-mV Input and Differential Output (Rev. A) Sep 9, 2021
Technical article Simplify your isolated current and voltage sensing designs with single-supply isol PDF | HTML Oct 26, 2020
Application brief Accuracy Comparison of Isolated Shunt and Closed-Loop Current Sensing PDF | HTML Sep 18, 2020

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

AMC-AMP-200APK-EVM — AMC3302 ±200A shunt-based current sensing evaluation module

The AMC-AMP-200A-EVM is an isolated current-sensing evaluation module designed for ±200A shunt-based current sensing. This EVM allows users to sense up to ±500A peak current through an external shunt resistor while measuring the isolated output through the isolation barrier of the (...)

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Evaluation board

AMC-AMP-50A-EVM — Evaluation module for ±50A AMCxx amplifier

The AMC-AMP-50A-EVM is an isolated current-sensing evaluation module (EVM) designed for ±50A shunt-based current sensing. This EVM allows users to sense up to ±50A peak current through an external shunt resistor while measuring the isolated output through the isolation barrier of the AMC3302. The (...)
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Evaluation board

AMC3302EVM — AMC3302 evaluation module for ±50-mV-input precision reinforced isolated amplifier

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 (...)

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Simulation model

AMC3302 PSpice Model

SBAM475.ZIP (13 KB) - PSpice model
Supported products & hardware
Simulation model

AMC3302 TINA-TI Spice Model (Rev. B)

SBAM444B (152 KB) - TINA-TI Spice model
Supported products & hardware
Calculation tool

SBAR013 — Isolated Amplifier Voltage Sensing Excel Calculator

This calculator provides estimates of the errors associated with using isolation amplifier devices in a voltage sensing configuration.
Supported products & hardware
Calculation tool

SBAR020 — Isolated Amplifier Current Sensing Excel Calculator

This calculator provides estimates of the errors associated with using isolation amplifier devices in a current sensing configuration.
Supported products & hardware
Reference design

PMP22650 — GaN-based, 6.6-kW, bidirectional, onboard charger reference design

The PMP22650 reference design is a 6.6-kW, bidirectional, onboard charger. The design employs a two-phase totem pole PFC and a full-bridge CLLLC converter with synchronous rectification. The CLLLC utilizes both frequency and phase modulation to regulate the output across the required regulation (...)
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Reference design

TIDA-010210 — 11-kW, bidirectional, three-phase ANPC based on GaN reference design

This reference design provides a design template for implementing a three-level, three-phase, gallium nitride (GaN) based ANPC inverter power stage. The use of fast switching power devices makes it possible to switch at a higher frequency of 100 kHz, reducing the size of magnetics for the filter (...)

Supported products & hardware
Reference design

TIDA-010236 — 4-kW GaN totem-pole PFC reference design for appliances

This reference design is a 4-kW continuous conduction mode (CCM) totem-pole power factor correction (PFC) with a top-cooled gallium nitride (GaN) daughterboard and TMS320F280025C digital controller. Along with the integrated protection features of LMG352x and C2000, full protections are (...)
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Package Pins CAD symbols, footprints & 3D models
SO-MOD (DWE) 16 Ultra Librarian
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