Product details

Device type Current sensing Peak-to-peak input voltage range (V) 0.05 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Working isolation voltage (VIOWM) (Vrms) 1500 Transient isolation voltage (VIOTM) (VPK) 7000 CMTI (min) (kV/µs) 55 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5 Input offset (±) (max) (V) 0.0001 Input offset drift (±) (typ) (µV/°C) 0.15 Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable
Device type Current sensing Peak-to-peak input voltage range (V) 0.05 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Working isolation voltage (VIOWM) (Vrms) 1500 Transient isolation voltage (VIOTM) (VPK) 7000 CMTI (min) (kV/µs) 55 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5 Input offset (±) (max) (V) 0.0001 Input offset drift (±) (typ) (µV/°C) 0.15 Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable
SOIC (DWV) 8 67.275 mm² 5.85 x 11.5
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, TA
  • Functional Safety-Capable
  • ±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:
    • 7000-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 5000-VRMS isolation for 1 minute per UL1577
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, TA
  • Functional Safety-Capable
  • ±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:
    • 7000-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 5000-VRMS isolation for 1 minute per UL1577

The AMC1302-Q1 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 reinforced galvanic isolation of up to 5 kVRMS according to DIN EN IEC 60747-17 (VDE 0884-17), and supports a working voltage of up to 1.5 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 AMC1302-Q1 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.

The AMC1302-Q1 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 reinforced galvanic isolation of up to 5 kVRMS according to DIN EN IEC 60747-17 (VDE 0884-17), and supports a working voltage of up to 1.5 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 AMC1302-Q1 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 AMC1302-Q1 Automotive, Precision, ±50-mV Input, Reinforced Isolated Amplifier datasheet (Rev. B) PDF | HTML 15 Jun 2022
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 note Entwicklung einer Bootstrap-Ladepumpen-Stromversorgung für einen isolierten Verstärker PDF | HTML 19 Aug 2024
Application note 절연 증폭기를 위한 부트스트랩 충전 펌프 전원 공급 장치 설계 PDF | HTML 19 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
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 HEV/EV의 션트 및 홀 기반 절연 전류 감지 솔루션 비교 (Rev. C) PDF | HTML 16 Jul 2024
Application brief Vergleich von isolierten Shunt- und Hall-basierten Strommesslösungen in Hybrid- und Elektrofahrzeugen (Rev. C) PDF | HTML 16 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
Analog Design Journal Designüberlegungen für die isolierte Strommessung (Rev. A) PDF | HTML 28 Jun 2024
Analog Design Journal 절연 전류 감지에 대한 설계 고려 사항 (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
Analog Design Journal Design considerations for isolated current sensing (Rev. A) 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
White paper 신뢰할 수 있는 합리적 가격대의 절연 기술 개발과 관련한 고전압 설계 문제의 해결 (Rev. C) PDF | HTML 16 May 2024
White paper 以可靠且經濟實惠的隔離技術解決高電壓設計挑戰 (Rev. C) PDF | HTML 07 Mar 2024
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. S) 29 Feb 2024
White paper Addressing High-Volt Design Challenges w/ Reliable and Affordable Isolation Tech (Rev. C) PDF | HTML 26 Sep 2023
Application note Designing a Bootstrap Charge-Pump Power Supply for an Isolated Amplifier PDF | HTML 25 Sep 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
Application brief Comparing shunt- and hall-based isolated current-sensing solutions in HEV/EV (Rev. C) PDF | HTML 28 Mar 2023
Certificate UL Certificate of Compliance Vol4 Sec5 E181974 (Rev. A) 23 Jan 2023
Circuit design Isolated Current-Sensing Circuit With ±50-mV Input and Single-Ended Output PDF | HTML 28 Jul 2022
Circuit design Isolated Current-Sensing Circuit With ±50-mV Input and Differential Output PDF | HTML 30 Jun 2022
Functional safety information AMC1302-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 17 Sep 2021
White paper Comparing isolated amplifiers and isolated modulators (Rev. A) 28 Feb 2019
White paper High Voltage Isolation Quality and Reliability for AMC130x 21 Jun 2016

Design & development

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Evaluation board

AMC1302EVM — AMC1302 evaluation module for ±50-mV-input, high-precision, reinforced isolated amplifier

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.

User guide: PDF
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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

Supported products & hardware

Products
Isolated amplifiers
AMC1202 ±50-mV input, precision current sensing basic isolated amplifier AMC1211-Q1 2-V input, precision voltage 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
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 (...)
Reference designs

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TIDA-020018 — Automotive shunt-based isolated current sensor reference design for DC/DC and OBC applications

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