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AMC1301

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±250 mV-Input Precision Reinforced Isolated Amplifier for Current Sensing

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Data sheet
±250 mV-Input Precision Reinforced Isolated Amplifier for Current Sensing

AMC1301

ACTIVE
Data sheet Order now

Product details

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SOIC (DWV) 8 67 mm² 5.85 x 11.5
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  • ±250-mV input voltage range optimized for current measurement using shunt resistors
  • Low offset error and drift:
    ±200 µV at 25°C, ± 3 µV/°C
  • Fixed gain: 8.2
  • Very low gain error and drift:
    ±0.3% at 25°C, ± 50 ppm/°C
  • Very low nonlinearity and drift:
    0.03%, 1 ppm/°C
  • 3.3-V operation on high-side and low-side
  • System-level diagnostic features
  • 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 and
      IEC 62368-1 end equipment standard
  • Fully specified over the extended industrial temperature range
  • ±250-mV input voltage range optimized for current measurement using shunt resistors
  • Low offset error and drift:
    ±200 µV at 25°C, ± 3 µV/°C
  • Fixed gain: 8.2
  • Very low gain error and drift:
    ±0.3% at 25°C, ± 50 ppm/°C
  • Very low nonlinearity and drift:
    0.03%, 1 ppm/°C
  • 3.3-V operation on high-side and low-side
  • System-level diagnostic features
  • 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 and
      IEC 62368-1 end equipment standard
  • Fully specified over the extended industrial temperature range
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The AMC1301 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 device prevents noise currents on a high common-mode voltage line from entering the local ground and interfering with or damaging sensitive circuitry.

The input of the AMC1301 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The excellent performance of the device supports accurate current control resulting in system-level power savings and, especially in motor control applications, lower torque ripple. The integrated common-mode overvoltage and missing high-side supply voltage detection features of the AMC1301 simplify system-level design and diagnostics.

The AMC1301 is fully specified over the extended industrial temperature range of –40°C to +125°C and is available in a wide-body 8-pin SOIC (DWV) package. The AMC1301S is specified over the temperature range of –55°C to +125°C.

The AMC1301 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 device prevents noise currents on a high common-mode voltage line from entering the local ground and interfering with or damaging sensitive circuitry.

The input of the AMC1301 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The excellent performance of the device supports accurate current control resulting in system-level power savings and, especially in motor control applications, lower torque ripple. The integrated common-mode overvoltage and missing high-side supply voltage detection features of the AMC1301 simplify system-level design and diagnostics.

The AMC1301 is fully specified over the extended industrial temperature range of –40°C to +125°C and is available in a wide-body 8-pin SOIC (DWV) package. The AMC1301S is specified over the temperature range of –55°C to +125°C.

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AMC1300 ACTIVE ±250-mV input, reinforced isolated amplifier with high CMTI for current sensing AMC1300 is the latest generation reinforced isolated amplifier with better isolation and performance ratings when compared to AMC1301

Technical documentation

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Type Title Date
* Data sheet AMC1301 Precision, ±250-mV Input, 3-µs Delay, Reinforced Isolated Amplifier datasheet (Rev. F) 29 Apr 2020
Application note Isolated Voltage-Measurement Circuit With ±250-mV Input and Differential Output (Rev. A) 09 Sep 2021
White paper Best in Class Radiated Emissions EMI Perf. with AMC1300B-Q1 Isolated Amplifier 29 Jun 2020
E-book Simplifying Current Sensing (Rev. A) 09 Jan 2020
Technical article Covering wide analog input measurement for grid protection and control using 24-bit delta-sigma ADCs 04 Dec 2018
Certificate Nonoptical Isolating Devices UL 1577 Certificate of Compliance (Rev. B) 26 Nov 2018
User guide AMC130x Evaluation Module User's Guide (Rev. C) 28 Jun 2018
User guide ISO5852SDW Driving and Protecting SiC and IGBT Power Modules 24 May 2018
White paper Understanding failure modes in isolators (Rev. A) 10 May 2018
Technical article For efficiencies’ sake – how to integrate bidirectional power flow into your UPS design (part 2) 19 Sep 2017
Application note Thermocouple Temperature Measurements Using Isolated Amplifiers (Rev. A) 11 Aug 2017
Technical article Understanding current sensing in HEV/EV batteries 02 Aug 2017
Technical article For efficiencies’ sake – how to integrate bidirectional power flow into your UPS design (part 1) 07 Jun 2017
White paper Charging stations: Toward an EV support infrastructure 09 May 2017
Application note Interfacing a Differential-Output (Isolated) Amp to a Single-Ended Input ADC 19 Apr 2017
White paper High Voltage Isolation Quality and Reliability for AMC130x 21 Jun 2016
Selection guide Understanding isolation terminology and relevance 23 May 2016
Design guide Shunt Based 200A Peak Current Measurement Using Isolation Amplifier Design Guide (Rev. A) 05 Mar 2016
User guide 0-5 A, Single-Supply, 2 kV Isolated Current Sensing Solution 18 Jun 2013

Design & development

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

Evaluation board

AMC1301EVM — AMC1301 Evaluation Module

The AMC1301EVM is an evaluation platform for the AMC1301, a 7kV reinforced isolation amplifier designed for use in current shunt measuring applications.  The AMC1301EVM allows the user to explore all the features of the AMC1301 device.
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Evaluation board

ISO5852SDWEVM-017 — Driving and Protection Evaluation Board for SiC and IGBT Power Modules

The ISO5852SDWEVM-017 is a compact, dual chanel isolated gate driver board providing drive, bias voltages, protection and diagnostic needed for half-bridge Sic MOSFET and IGBT Power Modules in standard 62-mm package. This TI EVM is based on 5.7-kVrms reinforced isolation driver IC ISO5852SDW in (...)

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Evaluation board

TIEVM-VIENNARECT — Vienna rectifier-based three-phase power factor correction evaluation module using C2000™ MCUs

The Vienna rectifier power topology is used in high power three phase power factor (AC-DC) applications such as off-board electric vehicle (EV) chargers and telecom rectifiers. This design illustrates how to control the power stage using C2000™ MCUs. This design uses an HSEC180 controlCARD (...)
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Simulation model

AMC1301 TINA-TI Reference Design (Rev. B)

SBAM271B.TSC (121 KB) - TINA-TI Reference Design
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Simulation model

AMC1301 TINA-TI SPICE Model (Rev. A)

SBAM272A.ZIP (13 KB) - TINA-TI Spice Model
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Simulation model

AMC1301 PSpice Model (Rev. D)

SBAM290D.ZIP (5 KB) - PSpice Model
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Simulation model

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

SBAM448.TSC (43 KB) - TINA-TI Spice 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)

SBAR013A.ZIP (290 KB)
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Reference designs

TIDM-1000 — Vienna Rectifier-Based Three Phase Power Factor Correction Reference Design Using C2000 MCU

Vienna rectifier power topology is used in high power three phase power factor (AC-DC) applications such as off board EV chargers and telecom rectifiers. Control design of the rectifier can be complex. This design illustrates a method to control the power stage using C2000™ microcontrollers (...)
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Reference designs

TIDA-00951 — 2kW, 48V to 400V, >93% Efficiency, Isolated Bidirectional DC-DC Converter Reference Design for UPS

The 2-kW isolated bidirectional DC-DC converter reference design (TIDA-00951) is capable of power transfer between a 400-V DC-BUS and a 12-14 cell lithium battery pack for use in UPS, battery backup and power storage applications. This reference design works as active clamped boost converter with (...)
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Reference designs

TIDA-00834 — High Accuracy Analog Front End Using 16-Bit SAR ADC with ±10V Measurement Range Reference Design

The TIDA-00834 reference design accurately measures voltage and current inputs using simultaneously sampled, 16-bit, ±10 V, bipolar input SAR ADC critical to identify power systems malfunction and power quality related failures accurately and quickly. This results in reduced power systems (...)
document-generic Schematic
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 (...)
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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 (...)
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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 (...)
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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 (...)
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Reference designs

TIDA-00912 — Shunt-Based High Current Measurement (200-A) Reference Design with Reinforced Isolation Amplifier

This isolated current measurement reference design uses external shunts, reinforced isolation amplifiers and isolated power supply. The shunt voltage is limited to 25-mV max. This reduces power dissipation in the shunt to enable a high-current measurement range up to 200 A. Shunt voltage is (...)
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Reference designs

TIDA-00445 — Shunt-Based 200A Peak Current Measurement Reference Design Using Isolation Amplifier

This reference design is for isolated current measurement using a shunt and isolated amplifier. By limiting the shunt voltage to 25 mV, this design is able to reduce power dissipation in the shunt and achieve a high-current measurement range of up to 200 A. Shunt voltage is further amplified (...)
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