Product details

Device type Voltage sensing Peak-to-peak input voltage range (V) 2 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) 15, 75 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5 Input offset (±) (max) (V) 0.0015, 0.0099 Input offset drift (±) (typ) (µV/°C) 3, 20 Rating Catalog Operating temperature range (°C) -55 to 125
Device type Voltage sensing Peak-to-peak input voltage range (V) 2 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) 15, 75 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5 Input offset (±) (max) (V) 0.0015, 0.0099 Input offset drift (±) (typ) (µV/°C) 3, 20 Rating Catalog Operating temperature range (°C) -55 to 125
SOIC (DWV) 8 67.275 mm² 5.85 x 11.5
  • 2-V, high-impedance input voltage range optimized for isolated voltage measurement
  • Fixed gain: 1
  • Low DC errors:
    • AMC1311:
      • Offset error: ±9.9 mV (maximum)
      • Offset drift: ±20 µV/°C (typical)
      • Gain error: ±1% (maximum)
      • Gain drift: ±30 ppm/°C (typical)
    • AMC1311B:
      • Offset error: ±1.5 mV (maximum)
      • Offset drift: ±10 µV/°C (maximum)
      • Gain error: ±0.2% (maximum)
      • Gain drift: ±40 ppm/°C (maximum)
    • Nonlinearity: 0.04% (maximum)
  • 3.3-V operation on high-side ( AMC1311B)
  • High CMTI: 100 kV/µs (minimum) ( AMC1311B)
  • Missing high-side supply indication
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 5000-VRMS isolation for 1 minute per UL1577
    • Fully specified over the extended industrial temperature range: –40°C to +125°C
  • 2-V, high-impedance input voltage range optimized for isolated voltage measurement
  • Fixed gain: 1
  • Low DC errors:
    • AMC1311:
      • Offset error: ±9.9 mV (maximum)
      • Offset drift: ±20 µV/°C (typical)
      • Gain error: ±1% (maximum)
      • Gain drift: ±30 ppm/°C (typical)
    • AMC1311B:
      • Offset error: ±1.5 mV (maximum)
      • Offset drift: ±10 µV/°C (maximum)
      • Gain error: ±0.2% (maximum)
      • Gain drift: ±40 ppm/°C (maximum)
    • Nonlinearity: 0.04% (maximum)
  • 3.3-V operation on high-side ( AMC1311B)
  • High CMTI: 100 kV/µs (minimum) ( AMC1311B)
  • Missing high-side supply indication
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 5000-VRMS isolation for 1 minute per UL1577
    • Fully specified over the extended industrial temperature range: –40°C to +125°C

The AMC1311 is a precision, isolated amplifier with an output separated from the input circuitry by a capacitive 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 UL1577 and supports a working voltage of up to 1500 VRMS.

The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from voltages that can cause electrical damage or be harmful to an operator.

The high-impedance input of the AMC1311 is optimized for connection to high-impedance resistive dividers or any other high-impedance voltage signal source. The excellent DC accuracy and low temperature drift support accurate, isolated voltage sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics.

The AMC1311 is offered with two performance grade options: the AMC1311B is specified over the extended industrial temperature range of –55°C to +125°C, and the AMC1311 is specified for operation at –40°C to +125°C.

The AMC1311 is a precision, isolated amplifier with an output separated from the input circuitry by a capacitive 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 UL1577 and supports a working voltage of up to 1500 VRMS.

The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from voltages that can cause electrical damage or be harmful to an operator.

The high-impedance input of the AMC1311 is optimized for connection to high-impedance resistive dividers or any other high-impedance voltage signal source. The excellent DC accuracy and low temperature drift support accurate, isolated voltage sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics.

The AMC1311 is offered with two performance grade options: the AMC1311B is specified over the extended industrial temperature range of –55°C to +125°C, and the AMC1311 is specified for operation at –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet AMC1311x High-Impedance, 2-V Input, Reinforced Isolated Amplifiers datasheet (Rev. C) PDF | HTML 06 Jun 2022
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
White paper 절연 증폭기를 사용한 동급 최고의 방사 방출 EMI 성능 (Rev. A) PDF | HTML 19 Jul 2024
White paper Beste EMI-Leistung in ihrer Klasse bei Strahlungsemissionen mit isolierten Verstärkern (Rev. A) PDF | HTML 17 Jul 2024
Analog Design Journal AC 모터 드라이브의 절연 전압 감지 PDF | HTML 11 Jul 2024
Analog Design Journal Isolierte Spannungserfassung in ACMotorantrieben PDF | HTML 11 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 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 차동 출력을 지원하는 ±480V 절연 전압 감지 회로 (Rev. A) PDF | HTML 24 Jun 2024
Circuit design ±480V Isolated Voltage-Sensing Circuit with Differential Output (Rev. A) PDF | HTML 21 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 Understanding failure modes in isolators (Rev. B) PDF | HTML 29 Jan 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
White paper Best in Class Radiated Emissions EMI Performance with Isolated Amplifiers (Rev. A) PDF | HTML 15 Mar 2023
Certificate UL Certificate of Compliance Vol4 Sec5 E181974 (Rev. A) 23 Jan 2023
Analog Design Journal Isolated Voltage Sensing in AC Motor Drives PDF | HTML 08 Jun 2022
White paper Comparing isolated amplifiers and isolated modulators (Rev. A) 28 Feb 2019
Circuit design ±480-V isolated voltage-sensing circuit with differential output 24 Jan 2019
Certificate Optical Isolating Devices UL 1577 Certificate of Compliance 07 Mar 2018
EVM User's guide AMC1311EVM User's Guide 13 Nov 2017
Selection guide Understanding isolation terminology and relevance 23 May 2016

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Evaluation board

AMC1311EVM — AMC1311 evaluation module

The AMC1311 device is a high-voltage isolation amplifier with a differential output separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. The isolation barrier provides galvanic isolation of up to 7000 VPEAK.  When used in combination with TLV6001, the (...)

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AMC1311 PSpice Model (Rev. A)

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SBAR013 Isolated Amplifier Voltage Sensing Excel Calculator

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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

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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
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