Product details

Device type Current sensing 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 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 x 10.3
  • 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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Type Title Date
* Data sheet AMC3302 High-Precision, ±50-mV Input, Reinforced Isolated Amplifier With Integrated DC/DC Converter datasheet (Rev. B) PDF | HTML 22 Jul 2021
Application brief Verwendung von AMC3311 zur Stromversorgung des AMC23C11 für isolierte Sensorik und Fehlererkennung PDF | HTML 21 Aug 2024
Circuit design Isolierte Strommessschaltung mit Frontend-Verstärkungsstufe PDF | HTML 20 Aug 2024
Circuit design 프론트 엔드게인 단계를 지원하는 절연 전류 감지 회로 PDF | HTML 20 Aug 2024
Application brief Shunt-Widerstandsauswahl für isolierte Datenwandler PDF | HTML 15 Aug 2024
Application brief 절연 데이터 컨버터를 위한 션트 레지스터 선택 PDF | HTML 15 Aug 2024
Application note Isolierte Spannungsmessschaltung mit ±250 mV-Eingang und Differenzausgang (Rev. A) PDF | HTML 09 Aug 2024
Application note ±250mV 입력 및 차동 출력을 사용하는 절연 전압 측정 회로 (Rev. A) PDF | HTML 09 Aug 2024
Circuit design Isolierte Strommessschaltung mit ±50 mV-Eingang und unsymmetrischem Ausgang PDF | HTML 19 Jul 2024
Circuit design ±50mV 입력 및 단일 종단 출력을 지원하는 절연 전류 감지 회로 PDF | HTML 19 Jul 2024
Application brief Hochleistungsfähige isolierte Strom- und Spannungsmessung in Server-Netzteilen PDF | HTML 16 Jul 2024
Application brief 서버 PSU에서 고성능 절연 전류 및 전압 감지 달성 PDF | HTML 16 Jul 2024
Application brief Genauigkeitsvergleich von isolierten Shunt- und Geschlossener Regelkreis-Strommessungen PDF | HTML 11 Jul 2024
Application note DC 전기차 충전 애플리케이션의 전류 감지를 위한 설계 고려 사항 PDF | HTML 10 Jul 2024
Application note Designüberlegungen für die Strommessung in DC-EVLadeanwendungen PDF | HTML 08 Jul 2024
Circuit design ±50mV 입력 및 차동 출력을 지원하는 절연 전류 감지 회로 PDF | HTML 05 Jul 2024
White paper Vergleich isolierter Verstärker und isolierter Modulatoren (Rev. B) PDF | HTML 02 Jul 2024
White paper 절연 증폭기와 절연 모듈레이터 비교 (Rev. B) PDF | HTML 02 Jul 2024
Application brief 절연 션트 및 폐쇄형 루프 전류 감지의 정확도 비교 PDF | HTML 01 Jul 2024
Application note AMC3301 제품군 방사 방출 EMI를 감쇠하기 위한 모범 사례 (Rev. A) PDF | HTML 28 Jun 2024
Application note Bewährte Methoden zur Dämpfung von EMIStörstrahlungen der AMC3301-Familie (Rev. A) PDF | HTML 28 Jun 2024
Application brief Anschluss eines Differenzialausgangsverstärkers (isoliert) an einen A/D-Wandler mit unsymmetrischem Eingang (Rev. B) PDF | HTML 27 Jun 2024
Application brief 단일 종단 입력 ADC에 차동 출력(절연) 증폭기 인터페이싱 (Rev. B) PDF | HTML 27 Jun 2024
Circuit design Isolierte Strommessschaltung mit ±50 mV-Eingang und Differenzausgang PDF | HTML 05 Jun 2024
Application brief AMC3311을 활용하여 절연 감지 및 고장 감지를 위해 AMC23C11 에 전원 공급 PDF | HTML 31 May 2024
Technical article 為更安全的太陽能系統和 EV 充電器提供準確的電流感測 PDF | HTML 17 Apr 2024
Technical article 더 안전한 태양광 에너지 시스템 및 EV 충전기를 위한 정확한 전류 감 지 제공 PDF | HTML 15 Apr 2024
Technical article Delivering accurate current sensing for safer solar energy systems and EV chargers PDF | HTML 10 Apr 2024
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. S) 29 Feb 2024
Application brief Utilizing AMC3311 to Power AMC23C11 for Isolated Sensing and Fault Detection PDF | HTML 09 Nov 2023
White paper 정확한 감지를 통해 시스템 성능을 개선하고 효율성을 높이는 방법 (Rev. C) PDF | HTML 30 Oct 2023
White paper How Accurate Sensing Enables Better System Performance and Increased Efficiency (Rev. C) PDF | HTML 22 Oct 2023
Application brief Interfacing a Differential-Output (Isolated) Amp to a Single-Ended Input ADC (Rev. B) PDF | HTML 02 Jun 2023
Application brief Shunt Resistor Selection for Isolated Data Converters PDF | HTML 04 May 2023
Circuit design Isolated Current-Sensing Circuit With Front-End Gain Stage PDF | HTML 24 Apr 2023
Certificate UL Certificate of Compliance Vol4 Sec5 E181974 (Rev. A) 23 Jan 2023
Application note Design Considerations for Current Sensing in DC EV Charging Applications PDF | HTML 13 Dec 2022
Application note Best Practices to Attenuate AMC3301 Family Radiated Emissions EMI (Rev. A) PDF | HTML 22 Sep 2022
Circuit design Isolated Current-Sensing Circuit With ±50-mV Input and Single-Ended Output PDF | HTML 28 Jul 2022
Application brief Achieving High-Performance Isolated Current and Voltage Sensing in Server PSUs PDF | HTML 21 Jul 2022
Circuit design Isolated Current-Sensing Circuit With ±50-mV Input and Differential Output PDF | HTML 30 Jun 2022
Certificate AMC3302EVM EU RoHS Declaration of Conformity (DoC) (Rev. B) 29 Jun 2022
User guide AMC3301, AMC3302, and AMC3330 Evaluation Module (Rev. C) PDF | HTML 13 Jan 2022
Application note Isolated Voltage-Measurement Circuit With ±250-mV Input and Differential Output (Rev. A) 09 Sep 2021
Technical article Simplify your isolated current and voltage sensing designs with single-supply isol PDF | HTML 26 Oct 2020
Application brief Accuracy Comparison of Isolated Shunt and Closed-Loop Current Sensing PDF | HTML 18 Sep 2020
White paper Comparing isolated amplifiers and isolated modulators (Rev. A) 28 Feb 2019

Design & development

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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 (...)

User guide: PDF | HTML
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Simulation model

AMC3302 PSpice Model

SBAM475.ZIP (13 KB) - PSpice Model
Simulation model

AMC3302 TINA-TI Spice Model (Rev. B)

SBAM444B.TSC (152 KB) - TINA-TI Spice Model
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This calculator provides estimates of the errors associated with using isolation amplifier devices in a voltage sensing configuration.
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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

Supported products & hardware

Products
Isolated amplifiers
AMC1202 ±50-mV input, precision current sensing basic isolated amplifier AMC1300 ±250-mV input, precision current sensing reinforced isolated amplifier AMC1300B-Q1 Automotive, ±250-mV input, precision current sensing reinforced isolated amplifier AMC1301 ±250 mV-Input Precision Reinforced Isolated Amplifier for Current Sensing AMC1301-Q1 Automotive Precision ±250mV-Input 3µs-Delay Reinforced Isolated Amplifier AMC1302 ±50-mV input, precision current sensing reinforced isolated amplifier AMC1302-Q1 Automotive, ±50-mV input, precision current sensing reinforced isolated amplifier AMC1311 2-V input, precision voltage sensing reinforced isolated amplifier AMC1311-Q1 Automotive, 2-V input, precision voltage sensing reinforced isolated amplifier AMC1350 ±5-V input, precision voltage sensing reinforced isolated amplifier AMC1351 0-V to 5-V input, precision voltage sensing reinforced isolated amplifier AMC1400 ±250-mV input, precision, current-sensing, reinforced isolated amplifier with high CMTI AMC1400-Q1 Automotive, ±250-mV input, precision, voltage-sensing, reinforced isolated amplifier with high CMTI AMC1411 2-V input, precision voltage sensing reinforced isolated amplifier with high CMTI AMC1411-Q1 Automotive, 2-V input, precision voltage sensing reinforced isolated amplifier with high CMTI AMC3301 ±250-mV input, precision current sensing reinforced isolated amplifier with integrated DC/DC AMC3301-Q1 Automotive, ±250-mV input, precision current sensing reinforced isolated amplifier with int. DC/DC AMC3302 ±50-mV input, precision current sensing reinforced isolated amplifier with integrated DC/DC AMC3302-Q1 Automotive, ±50-mV input, precision current sensing reinforced isolated amplifier with int. DC/DC AMC3330 ±1-V input, precision voltage sensing reinforced isolated amplifier with integrated DC/DC AMC3330-Q1 Automotive, ±1-V input, precision voltage sensing reinforced isolated amplifier with int. DC/DC ISO224 ±12-V input, precision voltage sensing reinforced isolated amplifier
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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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SO-MOD (DWE) 16 Ultra Librarian

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