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AMC1300B-Q1

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Automotive ±250-mV input, reinforced isolated amplifier with high CMTI for current sensing

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Data sheet
Automotive ±250-mV input, reinforced isolated amplifier with high CMTI for current sensing

AMC1300B-Q1

ACTIVE
Data sheet Order now

Product details

Input range (Vp-p) ±0.25 Isolation working voltage VIOWM (rms) (V) 1500 Isolation transient overvoltage VIOTM (peak) (V) 7071 CMTI (Min) (kV/µs) 75 Input offset (+/-) (Max) (mV) 0.2 Input offset drift (+/-) (Typ) (uV/C) 1 Gain error (+/-) (Max) (%) 0.3 Gain error drift (+/-) (Typ) (ppm/°C) 15 Gain non-linearity (+/-) (Max) (%) 0.03 Small signal bandwidth (Typ) (kHz) 310 Rating Automotive Operating temperature range (C) -40 to 125
Input range (Vp-p) ±0.25 Isolation working voltage VIOWM (rms) (V) 1500 Isolation transient overvoltage VIOTM (peak) (V) 7071 CMTI (Min) (kV/µs) 75 Input offset (+/-) (Max) (mV) 0.2 Input offset drift (+/-) (Typ) (uV/C) 1 Gain error (+/-) (Max) (%) 0.3 Gain error drift (+/-) (Typ) (ppm/°C) 15 Gain non-linearity (+/-) (Max) (%) 0.03 Small signal bandwidth (Typ) (kHz) 310 Rating Automotive Operating temperature range (C) -40 to 125
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SOIC (DWV) 8 67 mm² 5.85 x 11.5
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  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, TA
  • ±250-mV input voltage range optimized for current measurements using shunt resistors
  • Fixed gain: 8.2
  • Low DC errors:
    • Offset error: ±0.2 mV (max)
    • Offset drift: ±0.9 µV/°C (max)
    • Gain error: ±0.3% (max)
    • Gain drift: ±30 ppm/°C (max)
    • Nonlinearity: 0.03% (max)
  • 3.3-V or 5-V operation on high-side and low-side
  • Failsafe output
  • High CMTI : 100 kV/µs (min)
  • Low EMI, meets CISPR-11 and CISPR-25 standards
  • Safety-related certifications:
    • 7071-VPK reinforced isolation per DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, TA
  • ±250-mV input voltage range optimized for current measurements using shunt resistors
  • Fixed gain: 8.2
  • Low DC errors:
    • Offset error: ±0.2 mV (max)
    • Offset drift: ±0.9 µV/°C (max)
    • Gain error: ±0.3% (max)
    • Gain drift: ±30 ppm/°C (max)
    • Nonlinearity: 0.03% (max)
  • 3.3-V or 5-V operation on high-side and low-side
  • Failsafe output
  • High CMTI : 100 kV/µs (min)
  • Low EMI, meets CISPR-11 and CISPR-25 standards
  • Safety-related certifications:
    • 7071-VPK reinforced isolation per DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
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The AMC1300B-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 VDE V 0884-11 and UL1577, 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 AMC1300B-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 AMC1300B-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 VDE V 0884-11 and UL1577, 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 AMC1300B-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 AMC1300B-Q1 Precision, ±250-mV Input, Reinforced Isolated Amplifier datasheet (Rev. A) 12 Jan 2021
Application note Isolated Voltage-Measurement Circuit With ±250-mV Input and Differential Output (Rev. A) 09 Sep 2021
Analog design journal Design considerations for isolated current sensing 18 Mar 2021
White paper Best in Class Radiated Emissions EMI Perf. with AMC1300B-Q1 Isolated Amplifier 29 Jun 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
User guide AMC130x Evaluation Module User's Guide (Rev. C) 28 Jun 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

Design & development

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Evaluation board

AMC1300EVM — AMC1300 ±250-mV input, reinforced isolated amplifier with high CMTI evaluation module

The AMC1300 evaluation module (EVM) is a platform for evaluating the AMC1300, which is a 7-kV reinforced isolation amplifier designed for use in current shunt measuring applications. AMC1300EVM allows the user to explore all the features of the AMC1300.

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Simulation model

AMC13xx TINA-TI SPICE Model for Isolated Voltage-Measurement Circuit

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Simulation model

AMC1300 and AMC1300B-Q1 PSpice Model

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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 (...)
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Calculation tool

Isolated Amplifier Voltage Sensing Excel Calculator (Rev. A)

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