AMC1301DWVR Description

The AMC1301DWVR is a precision, reinforced isolated amplifier designed to measure low-voltage differential signals (±250 mV) across high common-mode voltages. It uses a delta-sigma modulator front end and a capacitive isolation barrier to safely isolate the input from the output, making it ideal for current or voltage sensing in high-voltage systems. It supports the industrial temperature range (–40 °C to +125 °C) and meets reinforced isolation safety standards (VDE, UL).

AMC1301DWVR Features

±250 mV differential input range with fixed gain of 8.2 V/V, ideal for shunt current sensing

Very low offset error and low offset drift, high accuracy over temperature

Reinforced isolation certified for 5000 VRMS (UL1577) and 7070 V peak (VDE)

Supports 3.3 V supply on both input and output sides

Built-in diagnostic features like common-mode overvoltage detection and fail-safe output

Typical propagation delay around 3 μs, suitable for fast control loops

AMC1301DWVR Applications

Shunt-resistor current sensing in motor drives, inverters, and UPS systems

High-side current measurement in DC/DC converters and onboard chargers

Isolated current or voltage measurement in industrial frequency inverters

Renewable energy systems like solar inverters and battery management systems

Safety-critical overcurrent detection and diagnostic monitoring

AMC1301DWVR CAD Model

Symbol

Footprint

3D Model

AMC1301DWVR Alternatives

AMC1300: Similar performance with slight packaging and spec differences

AMC1300B-Q1: Automotive qualified version

AMC3301 / AMC3301-Q1: Includes integrated isolated power supply

AMC1311: Higher bandwidth option for faster signal tracking

Competing isolation amplifiers from other vendors like Silicon Labs or Analog Devices

AMC1301DWVR Manufacturer

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas, USA, known for designing and manufacturing analog chips and embedded processors that power electronic devices worldwide. Founded in 1930, TI has evolved from an oil exploration company to one of the world’s leading innovators in electronics, holding thousands of patents and pioneering technologies like the integrated circuit and handheld calculator.

TI’s core business focuses on two main areas:

Analog Products – including power management, signal chain, and interface devices used in virtually all electronic systems.

Embedded Processing – including microcontrollers (MCUs), digital signal processors (DSPs), and wireless connectivity solutions for real-time control and communication.

With manufacturing sites, R&D centers, and sales offices across the globe, TI supports industries such as automotive, industrial automation, communications, personal electronics, and aerospace. The company is recognized for its strong commitment to innovation, quality, and long-term product availability, enabling engineers to design smarter, more efficient, and more reliable electronic systems.

AMC1301DWVR FAQs

How does the AMC1301 handle input common-mode overvoltage?

It detects excessive common-mode voltage and outputs a predefined fail-safe diagnostic signal.

Does input impedance affect accuracy with large shunt resistors?

Yes, the 22 kΩ differential input impedance can interact with external resistors and introduce gain error, so balanced input networks are recommended.

What is the propagation delay and how does it impact control loops?

Typical propagation delay is about 3 μs, which should be considered in fast current protection loops.

How stable is gain over temperature?

Gain drift is about ±50 ppm/°C, which can cause small gain changes over the full temperature range and may require software calibration.

What isolation certifications does it meet?

It is certified for reinforced isolation according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 (5000 VRMS for 1 min), provided PCB creepage and clearance requirements are respected.