Product details

Device type Voltage sensing Input range (Vp-p) 2 Isolation working voltage VIOWM (rms) (V) 1500 Isolation transient overvoltage VIOTM (peak) (V) 7000 CMTI (Min) (kV/µs) 15, 75 Input offset (+/-) (Max) (mV) 9.9, 1.5 Input offset drift (+/-) (Typ) (uV/C) 20, 3 Gain error (+/-) (Max) (%) 1, 0.3 Gain error drift (+/-) (Typ) (ppm/°C) 30, 5 Gain non-linearity (+/-) (Max) (%) 0.04 Small signal bandwidth (Typ) (kHz) 220, 275 Rating Catalog Operating temperature range (C) -40 to 125, -55 to 125
Device type Voltage sensing Input range (Vp-p) 2 Isolation working voltage VIOWM (rms) (V) 1500 Isolation transient overvoltage VIOTM (peak) (V) 7000 CMTI (Min) (kV/µs) 15, 75 Input offset (+/-) (Max) (mV) 9.9, 1.5 Input offset drift (+/-) (Typ) (uV/C) 20, 3 Gain error (+/-) (Max) (%) 1, 0.3 Gain error drift (+/-) (Typ) (ppm/°C) 30, 5 Gain non-linearity (+/-) (Max) (%) 0.04 Small signal bandwidth (Typ) (kHz) 220, 275 Rating Catalog Operating temperature range (C) -40 to 125, -55 to 125
SOIC (DWV) 8 67 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
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. R) 12 Jul 2022
White paper High-Voltage Semiconductor Solutions for Meeting Isolation Requirements (Rev. A) PDF | HTML 06 Jun 2022
White paper 以可靠且經濟實惠的隔離技術解決高電壓設計難題 (Rev. A) PDF | HTML 06 Jun 2022
White paper 높 은 신뢰도와 합리적인 가격대의 절연 기술 개발과 관련한 고전압 설계 문 제의 해결.. (Rev. A) PDF | HTML 06 Jun 2022
Certificate UL Certificate of Compliance Vol4 Sec5 E181974 24 May 2022
Application note Interfacing a Differential-Output (Isolated) Amp to a Single-Ended Input ADC (Rev. A) PDF | HTML 10 Mar 2022
Application note Best in Class Radiated Emissions EMI Perf. with AMC1300B-Q1 Isolated Amplifier PDF | HTML 29 Jun 2020
White paper How Capacitive Isolation Solves Key Challenges in AC Motor Drives 23 Aug 2019
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
White paper Understanding failure modes in isolators (Rev. A) 10 May 2018
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
Technical article Get cerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained (Part 4) 06 Feb 2015
Technical article Using delta-sigma modulators for isolated high-voltage measurements 09 Jan 2015
Technical article Part III: Get CerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained 02 Dec 2014

Design & development

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

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 (...)

User guide: PDF
Not available on TI.com
Simulation model

AMC1311 PSpice Model (Rev. A)

SBAM385A.ZIP (5 KB) - PSpice Model
Simulation model

AMC1311 TINA-TI Reference Design (Rev. B)

SBAM366B.ZIP (325 KB) - TINA-TI Reference Design
Simulation model

AMC1311 TINA-TI Spice Model (Rev. A)

SBAM367A.ZIP (14 KB) - TINA-TI Spice Model
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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Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00080 — Isolated delta-sigma modulator based AC/DC voltage and current measurement module reference design

This isolated shunt based current measurement unit enables high accuracy current measurement without the use of Current Transformers (CT). The isolation is achieved through the use of AMC1304 that incorporates both high voltage isolation as well as the Delta-Sigma Modulator. This solution (...)
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Schematic: PDF
Reference designs

TIDA-010065 — High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design

This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-010025 — Three-phase inverter reference design for 200-480 VAC drives with opto-emulated input gate drivers

This reference design realizes a reinforced isolated three-phase inverter subsystem using isolated IGBT gate drivers and isolated current/voltage sensors. The UCC23513 gate driver used has a 6-pin wide body package with optical LED emulated inputs which enables its use as pin-to-pin replacement to (...)
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Schematic: PDF
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This reference design is a 6.6 kW, bi-directional, dual-active-bridge resonant converterdesign that allows 380 VDC to 600 VDC input and 280 VDC to 450 VDC output. This design uses the C2000 micro-controller TMS320F280049 along with silicon-carbide (SiC) driver UCC21530-Q1 to drive bridges both on (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-00366 — Reference design for reinforced isolation 3-phase inverter with current, voltage and temp protection

This reference design provides a three-phase inverter rated up to 10 kW designed using the reinforced isolated gate driver UCC21530, reinforced isolated amplifiers AMC1301 and AMC1311 and MCU TMS320F28027. Lower system cost is achieved by using the AMC1301 to measure motor current interfaced with (...)
Design guide: PDF
Schematic: PDF
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PMP21999 — 6.6 kW, bi-directional CLLLC resonant converter reference design using PCB winding transformer

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Test report: PDF
Schematic: PDF
Reference designs

TIDA-01540 — Three-Phase Inverter Reference Design Using Gate Driver With Built-in Dead Time Insertion

The TIDA-01540 reference design reduces system cost and enables a compact design for a reinforced isolated 10kW three phase inverter. A lower system cost and compact form factor is achieved by using a dual gate driver in a single package and bootstrap configuration to generate floating voltages (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00835 — High Accuracy ±0.5% Current and Isolated Voltage Measurement Ref Design Using 24-Bit Delta-Sigma ADC

The TIDA-00835 reference design allows for accurate voltage and current measurement using a bipolar input configuration by incorporating a four- channel, 24-bit simultaneously-sampling differential input Delta-Sigma ADC over wide dynamic range. The ADC is configured to measure ±2.5 V bipolar (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01541 — High-Bandwidth Phase Current and DC-Link Voltage Sensing Reference Design for Three-Phase Inverters

The TIDA-01541 reference design reduces system cost and enables a compact design for isolated phase current and DC link voltage measurement in three-phase inverters, while achieving high bandwidth and sensing accuracy. The output of the isolated amplifiers is interfaced to the internal ADC of the (...)
Design guide: PDF
Schematic: PDF
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