Product details

Device type Voltage sensing Input range (Vp-p) 2 Isolation working voltage VIOWM (rms) (V) 1000 Isolation transient overvoltage VIOTM (peak) (V) 4250 CMTI (Min) (kV/µs) 30 Input offset (+/-) (Max) (mV) 1.5 Input offset drift (+/-) (Typ) (uV/C) 3 Gain error (+/-) (Max) (%) 0.3 Gain error drift (+/-) (Typ) (ppm/°C) 5 Gain non-linearity (+/-) (Max) (%) 0.04 Small signal bandwidth (Typ) (kHz) 275 Rating Automotive Operating temperature range (C) -40 to 125 TI functional safety category Functional Safety-Capable
Device type Voltage sensing Input range (Vp-p) 2 Isolation working voltage VIOWM (rms) (V) 1000 Isolation transient overvoltage VIOTM (peak) (V) 4250 CMTI (Min) (kV/µs) 30 Input offset (+/-) (Max) (mV) 1.5 Input offset drift (+/-) (Typ) (uV/C) 3 Gain error (+/-) (Max) (%) 0.3 Gain error drift (+/-) (Typ) (ppm/°C) 5 Gain non-linearity (+/-) (Max) (%) 0.04 Small signal bandwidth (Typ) (kHz) 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
  • Fixed gain: 1
  • Low DC errors:
    • 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
  • High CMTI: 30 kV/µs (minimum)
  • Missing high-side supply indication
  • Safety-related certifications:
    • 4250-VPK basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 3000-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
  • 2-V, high-impedance input voltage range optimized for isolated voltage measurement
  • Fixed gain: 1
  • Low DC errors:
    • 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
  • High CMTI: 30 kV/µs (minimum)
  • Missing high-side supply indication
  • Safety-related certifications:
    • 4250-VPK basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 3000-VRMS isolation for 1 minute per UL1577

The AMC1211-Q1 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 basic galvanic isolation of up to 3 kVRMS according to the DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards, and supports a working voltage of up to 1000 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 AMC1211-Q1 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 AMC1211-Q1 is offered in a wide-body 8-pin SOIC package and is AEC-Q100 qualified for automotive applications and supports the temperature range from –40°C to +125°C.

The AMC1211-Q1 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 basic galvanic isolation of up to 3 kVRMS according to the DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards, and supports a working voltage of up to 1000 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 AMC1211-Q1 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 AMC1211-Q1 is offered in a wide-body 8-pin SOIC package and is AEC-Q100 qualified for automotive applications and supports the temperature range from –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet AMC1211-Q1 Automotive, High-Impedance, 2-V Input, Basic Isolated Amplifier datasheet (Rev. C) PDF | HTML 28 Nov 2022
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 1 (Rev. A) 05 Aug 2022
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. T) 12 Jul 2022
Application note Interfacing a Differential-Output (Isolated) Amp to a Single-Ended Input ADC (Rev. A) PDF | HTML 10 Mar 2022
Functional safety information AMC1211-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
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
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

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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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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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