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AMC1302-Q1

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Automotive, ±50-mV input, precision current sensing reinforced isolated amplifier

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Data sheet

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NEW AMC0302D-Q1 ACTIVE Automotive, precision ±50mV-input reinforced isolated amplifier with differential output New generation drop in replacement

AMC1302-Q1

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Product details

Device type Current sensing Output type Differential Peak-to-peak input voltage range (V) 0.05 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) 55 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5 Input offset (±) (max) (V) 0.0001 Input offset drift (±) (typ) (µV/°C) 0.15 Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable
Device type Current sensing Output type Differential Peak-to-peak input voltage range (V) 0.05 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) 55 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5 Input offset (±) (max) (V) 0.0001 Input offset drift (±) (typ) (µV/°C) 0.15 Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable
SOIC (DWV) 8 67.275 mm² (5.85 mm × 11.5 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, TA
  • Functional Safety-Capable
  • ±50-mV input voltage range optimized for current measurements using shunt resistors
  • Fixed gain: 41
  • Low DC errors:
    • Offset error: ±50 µV (max)
    • Offset drift: ±0.8 µV/°C (max)
    • Gain error: ±0.2% (max)
    • Gain drift: ±35 ppm/°C (max)
    • Nonlinearity: 0.03% (max)
  • 3.3-V or 5-V operation on high-side and low-side
  • Fail-safe output
  • High CMTI: 100 kV/µs (min)
  • Low EMI, meets CISPR-11 and CISPR-25 standards
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 5000-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
  • ±50-mV input voltage range optimized for current measurements using shunt resistors
  • Fixed gain: 41
  • Low DC errors:
    • Offset error: ±50 µV (max)
    • Offset drift: ±0.8 µV/°C (max)
    • Gain error: ±0.2% (max)
    • Gain drift: ±35 ppm/°C (max)
    • Nonlinearity: 0.03% (max)
  • 3.3-V or 5-V operation on high-side and low-side
  • Fail-safe output
  • High CMTI: 100 kV/µs (min)
  • Low EMI, meets CISPR-11 and CISPR-25 standards
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 5000-VRMS isolation for 1 minute per UL1577

The AMC1302-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 DIN EN IEC 60747-17 (VDE 0884-17), 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 AMC1302-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 AMC1302-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 DIN EN IEC 60747-17 (VDE 0884-17), 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 AMC1302-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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Top documentation Type Title Format options Date
* Data sheet AMC1302-Q1 Automotive, Precision, ±50-mV Input, Reinforced Isolated Amplifier datasheet (Rev. B) PDF | HTML Jun 15, 2022
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AB) Jul 15, 2026
White paper Addressing High-Volt Design Challenges w/ Reliable and Affordable Isolation Tech (Rev. D) PDF | HTML May 15, 2026
Application note Isolated Converters CISPR25 Radiated Emissions PDF | HTML Oct 13, 2025
Analog design Journal Design considerations for isolated current sensing (Rev. A) PDF | HTML Jun 27, 2024
White paper Comparing Isolated Amplifiers and Isolated Modulators (Rev. B) PDF | HTML Jun 4, 2024
E-book An Engineer's Guide to Isolated Signal Chain Solutions PDF | HTML May 23, 2024
Application note Designing a Bootstrap Charge-Pump Power Supply for an Isolated Amplifier PDF | HTML Sep 25, 2023
Application brief Interfacing a Differential-Output (Isolated) Amp to a Single-Ended Input ADC (Rev. B) PDF | HTML Jun 2, 2023
Application brief Shunt Resistor Selection for Isolated Data Converters PDF | HTML May 4, 2023
Circuit design Isolated Current-Sensing Circuit With Front-End Gain Stage PDF | HTML Apr 24, 2023
Application brief Comparing shunt- and hall-based isolated current-sensing solutions in HEV/EV (Rev. C) PDF | HTML Mar 28, 2023
Certificate UL Certificate of Compliance Vol4 Sec5 E181974 (Rev. A) Jan 23, 2023
Circuit design Isolated Current-Sensing Circuit With ±50-mV Input and Single-Ended Output PDF | HTML Jul 28, 2022
Circuit design Isolated Current-Sensing Circuit With ±50-mV Input and Differential Output PDF | HTML Jun 30, 2022
Functional safety information AMC1302-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML Sep 17, 2021
White paper High Voltage Isolation Quality and Reliability for AMC130x Jun 21, 2016

Design & development

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

Evaluation board

AMC-AMP-50A-EVM — Evaluation module for ±50A AMCxx amplifier

The AMC-AMP-50A-EVM is an isolated current-sensing evaluation module (EVM) designed for ±50A shunt-based current sensing. This EVM allows users to sense up to ±50A peak current through an external shunt resistor while measuring the isolated output through the isolation barrier of the AMC3302. The (...)
User guide: PDF | HTML
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Evaluation board

AMC1302EVM — AMC1302 evaluation module for ±50-mV-input, high-precision, reinforced isolated amplifier

The AMC1302 evaluation module (EVM) is a platform for evaluating the AMC1302, which is a 7-kV reinforced isolation amplifier designed for use in current shunt measuring applications. AMC1302EVM allows the user to explore all the features of the AMC1302 device.

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Calculation tool

SBAR013 — Isolated Amplifier Voltage Sensing Excel Calculator

This calculator provides estimates of the errors associated with using isolation amplifier devices in a voltage sensing configuration.
Supported products & hardware
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
Reference design

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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 (...)
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PMP21999 — 6.6 kW, bi-directional CLLLC resonant converter reference design using PCB winding transformer

This 6.6 kW, bi-directional, dual-active-bridge resonant converter reference design allows 380 VDC to 600 VDC input and 280 VDC to 450 VDC output. PCB winding transformer and Rogowski coil synchronous rectifier (SR) control are applied in this design for power density and efficiency optimization. (...)
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Reference design

TIDA-020018 — Automotive shunt-based isolated current sensor reference design for DC/DC and OBC applications

This reference design demonstrates high-side primary current sensing in DC/DC converter and onboard charger (OBC) applications for hybrid and electric vehicles. Using an isolated shunt approach for current sensing has several advantages, including high accuracy, linearity and robustness. However, (...)
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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™ (...)
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Reference design

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 (...)

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