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


Product details


Input range (Vp-p) ±0.05 Isolation working voltage VIOWM (rms) (V) 1500 Isolation transient overvoltage VIOTM (peak) (V) 7000 CMTI (Min) (kV/µs) 55 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) 280 Rating Catalog Operating temperature range (C) -55 to 125 open-in-new Find other Isolated amplifiers

Package | Pins | Size

SOIC (DWV) 8 67 mm² 5.85 x 11.5 open-in-new Find other Isolated amplifiers


  • ±50-mV input voltage range for low dissipation, shunt-resistor-based current measurement
  • Fixed gain with low drift: 41 ± 0.3%, ±50 ppm/°C
  • Low input offset and drift: ±100 µV, ±0.8 µV/°C
  • Low nonlinearity and drift: ±0.03%, ±1 ppm/°C
  • Very low isolated high-side power dissipation when operated from a 3.3-V supply
  • System-level diagnostic features
  • Safety-related certifications:
    • 7071-VPK reinforced isolation per
      DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
  • Extended industrial temperature range:
    –55°C to +125°C
  • High CMTI: 80 kV/µs (typ), 55 kV/µs (min)
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The AMC1302 is a precision isolated amplifier with a capacitive isolation barrier that has high immunity to magnetic interference. This barrier provides reinforced isolation of 5 kVRMS (maximum) with a very long lifetime and low power dissipation. When used with isolated power supplies, this device isolates components that operate on different common-mode voltage levels. Furthermore, the AMC1302 also protects lower-voltage devices from damage.

The input of the AMC1302 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The ±50-mV input voltage range allows significant reduction of the power dissipation through the shunt. Additionally, the low high-side supply current and voltage of the AMC1302 allow use of low-cost isolated power-supply solutions. The performance of the device supports accurate current control resulting in system-level power savings and in low torque ripple that is particularly important in motor control applications. The integrated input common-mode overvoltage and missing high-side supply voltage detection features of the AMC1302 simplify system-level diagnostics.

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Technical documentation

Design & development

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

Hardware development

document-generic User guide

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.

  • Reinforced isolation amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 41
  • ±50-mV input range
  • Low gain error and drift
  • Extended industrial temperature range

Design tools & simulation

SBAM396.ZIP (7 KB) - TINA-TI Spice Model
SBAM399.TSC (69 KB) - TINA-TI Reference Design
SBAM458.ZIP (16 KB) - PSpice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SBAR013A.ZIP (290 KB)

Reference designs

参考设计 Download
Bi-directional, dual active bridge reference design for level 3 electric vehicle charging stations
TIDA-010054 — This reference design provides an overview on the implementation of a single-phase dual active bridge (DAB) DC/DC converter. DAB topology offers advantages like soft-switching commutations, a decreased number of devices and high efficiency. The design is beneficial where power density, cost, weight (...)
document-generic Schematic
参考设计 Download
High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design
TIDA-010065 — This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom for (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOIC (DWV) 8 View options

Ordering & quality

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