Product details

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 Automotive Operating temperature range (C) -40 to 125 TI functional safety category Functional Safety-Capable
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 Automotive Operating temperature range (C) -40 to 125 TI functional safety category Functional Safety-Capable
SOIC (DWV) 8 67 mm² 5.85 x 11.5
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • 2-V, high-impedance input voltage range optimized for isolated voltage measurement
  • Low offset error and drift:
    • AMC1311B-Q1: ±1.5 mV (max), ±10 µV/°C (max)
    • AMC1311-Q1: ±9.9 mV (max), ±20 µV/°C (typ)
  • Fixed gain: 1
  • Very low gain error and drift:
    • AMC1311B-Q1: ±0.2% (max), ±40 ppm/°C (max)
    • AMC1311-Q1: ±1% (max), ±30 ppm/°C (typ)
  • Low nonlinearity and drift: 0.01%, 1 ppm/°C (typ)
  • 3.3-V operation on high-side (AMC1311B-Q1)
  • Missing high-side supply indication
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • 2-V, high-impedance input voltage range optimized for isolated voltage measurement
  • Low offset error and drift:
    • AMC1311B-Q1: ±1.5 mV (max), ±10 µV/°C (max)
    • AMC1311-Q1: ±9.9 mV (max), ±20 µV/°C (typ)
  • Fixed gain: 1
  • Very low gain error and drift:
    • AMC1311B-Q1: ±0.2% (max), ±40 ppm/°C (max)
    • AMC1311-Q1: ±1% (max), ±30 ppm/°C (typ)
  • Low nonlinearity and drift: 0.01%, 1 ppm/°C (typ)
  • 3.3-V operation on high-side (AMC1311B-Q1)
  • Missing high-side supply indication
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice

The AMC1311-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 7 kVPEAK according to VDE V 0884-11 and UL1577. Used in conjunction with isolated power supplies, this isolated amplifier separates parts of the system that operate on different common-mode voltage levels and protects lower-voltage parts from damage.

The high-impedance input of the AMC1311-Q1 is optimized for connection to high-voltage resistive dividers or other voltage signal sources with high output resistance. The excellent performance of the device supports accurate, low temperature drift voltage or temperature sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics.

The AMC1311-Q1 is offered with two performance grade options: AMC1311-Q1 and AMC1311B-Q1.

The AMC1311-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 7 kVPEAK according to VDE V 0884-11 and UL1577. Used in conjunction with isolated power supplies, this isolated amplifier separates parts of the system that operate on different common-mode voltage levels and protects lower-voltage parts from damage.

The high-impedance input of the AMC1311-Q1 is optimized for connection to high-voltage resistive dividers or other voltage signal sources with high output resistance. The excellent performance of the device supports accurate, low temperature drift voltage or temperature sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics.

The AMC1311-Q1 is offered with two performance grade options: AMC1311-Q1 and AMC1311B-Q1.

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Technical documentation

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Type Title Date
* Data sheet AMC1311x-Q1 High-Impedance, 2-V Input, Reinforced Isolated Amplifiers datasheet (Rev. B) 15 May 2020
White paper High-Voltage Semiconductor Solutions for Meeting Isolation Requirements 20 Jan 2021
Functional safety information AMC1311-Q1 Functional Safety FIT Rate, FMD and Pin FMA 15 May 2020
White paper Comparing shunt- and Hall-based current-sensing solutions in onboard chargers an (Rev. A) 19 Mar 2019
White paper Comparing isolated amplifiers and isolated modulators (Rev. A) 28 Feb 2019
Application note Comparing shunt- and hall-based isolated current-sensing solutions in HEV/EV (Rev. B) 17 Jan 2019
Certificate Nonoptical Isolating Devices UL 1577 Certificate of Compliance (Rev. B) 26 Nov 2018
Application note High-Accuracy Isolated Voltage Measurement in HEV/EV Subsystems Using AMC1311-Q1 13 Jun 2018
White paper Understanding failure modes in isolators (Rev. A) 10 May 2018
Certificate Optical Isolating Devices UL 1577 Certificate of Compliance 07 Mar 2018
User guide AMC1311EVM User's Guide 13 Nov 2017
Application note Interfacing a Differential-Output (Isolated) Amp to a Single-Ended Input ADC 19 Apr 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 (...)

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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 (...)
参考设计

TIDM-02002 — Bidirectional CLLLC resonant dual active bridge (DAB) reference design for HEV/EV onboard charger

CLLLC resonant DAB with bidirectional power flow capability and soft switching characteristics is an ideal candidate for Hybrid Electric Vehicle/Electric Vehicle (HEV/EV) on-board chargers and energy storage applications. This design illustrates control of this power topology using a C2000™ (...)
参考设计

TIDM-02009 — ASIL D safety concept-assessed high-speed traction, bi-directional DC/DC conversion reference design

This reference design demonstrates control of HEV/EV traction inverter and bi-directional DC-DC converter by a single TMS320F28388D real-time C2000™ MCU. The traction control uses a software-based resolver to digital converter (RDC) driving the motor to a high speed up to 20,000 RPM. The (...)
参考设计

TIDA-020030 — SiC/IGBT isolated gate driver reference design with thermal diode and sensing FET

This reference design is an IGBT or SiC isolated gate driver power stage driving a IGBT module with advanced protection features. The design consists of a single phase power stage from a traction inverter supporting high level of safety features. The IGBT module has integrated thermal diode for (...)
参考设计

TIDA-020014 — HEV/EV traction inverter power stage with 3 types of IGBT/SiC bias-supply solutions reference design

This reference design presents a traction inverter single-phase power stage with three 12-V car battery inputs, 4.2-W bias supply solutions for hybrid electric vehicle and electric vehicle (HEV/EV) systems. All bias-supply solutions accept a wide input range of 4.5 V to 42 V DC from a 12-V car (...)
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