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AMC1100

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±250 mV-Input, Low-Cost Basic Isolated Amplifier for Current Sensing

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±250 mV-Input, Low-Cost Basic Isolated Amplifier for Current Sensing

AMC1100

ACTIVE
Data sheet Order now

Product details

Parameters

Input range (Vp-p) ±0.25 Isolation working voltage VIOWM (rms) (V) 800 Isolation transient overvoltage VIOTM (peak) (V) 4250 CMTI (Min) (kV/µs) 2.5 Input offset (+/-) (Max) (mV) 1.5 Input offset drift (+/-) (Typ) (uV/C) 1.5 Gain error (+/-) (Max) (%) 1 Gain error drift (+/-) (Typ) (ppm/°C) 56 Gain non-linearity (+/-) (Max) (%) 0.075 Small signal bandwidth (Typ) (kHz) 100 Rating Catalog Operating temperature range (C) -40 to 105 open-in-new Find other Isolated amplifiers

Package | Pins | Size

SOIC (DWV) 8 67 mm² 5.85 x 11.5 SOP (DUB) 8 99 mm² 9.5 x 10.4 open-in-new Find other Isolated amplifiers

Features

  • ±250-mV input voltage range optimized for shunt resistors
  • Very low nonlinearity: 0.075% max at 5 V
  • Low offset error: 1.5 mV max
  • Low noise: 3.1 mVRMS typ
  • Low high-side supply current:
    8 mA max at 5 V
  • Input bandwidth: 60 kHz min
  • Fixed gain: 8 (0.5% Accuracy)
  • High common-mode rejection ratio: 108 dB
  • Low-side operation: 3.3 V
  • Safety-related certifications:
    • 4250-VPK basic isolation per
      DIN VDE V 0884-11: 2017-01
    • 3005-VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1 standard
    • Working voltage: 1200 VPEAK
    • Transient immunity: 2.5 kV/µs min
  • Fully specified over the extended industrial temperature range

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Description

The AMC1100 is a precision isolation amplifier with an output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier is certified to provide galvanic isolation of up to 4250 VPEAK, according to DIN VDE V 0884-11: 2017-01 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 AMC1100 input is optimized for direct connection to shunt resistors or other low voltage level signal sources. The excellent performance of the device enables accurate current and voltage measurement in energy-metering applications. The output signal common-mode voltage is automatically adjusted to either the 3-V or 5-V low-side supply.

The AMC1100 is fully specified over the extended industrial temperature range of –40°C to +105°C and is available in the SMD-type, wide-body SOIC-8 (DWV) and gullwing-8 (DUB) packages.

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Technical documentation

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Type Title Date
* Data sheet AMC1100 Fully-Differential Isolation Amplifier datasheet (Rev. B) Dec. 03, 2019
Application note Voltage Fed Full Bridge DC-DC & DC-AC Converter High-Freq Inverter Using C2000 (Rev. D) Apr. 07, 2021
White paper Best in Class Radiated Emissions EMI Perf. with AMC1300B-Q1 Isolated Amplifier Jun. 29, 2020
E-book Simplifying Current Sensing (Rev. A) Jan. 09, 2020
More literature UL Certification (File: E181974 Project: 478705069) (Rev. C) Jun. 11, 2018
Application note 800VA Pure Sine Wave Inverter's Reference Design (Rev. A) Aug. 01, 2017
Application note Interfacing a Differential-Output (Isolated) Amp to a Single-Ended Input ADC Apr. 19, 2017
Technical article Exploring high-voltage transmission – part 2, voltage-source converters Mar. 14, 2017
User guide AMC1100EVM User's Guide (Rev. A) Dec. 11, 2015
More literature CSA Certification (Certificate: 220991) (Rev. A) Oct. 23, 2015
Technical article Get cerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained (Part 4) Feb. 06, 2015
Technical article Using delta-sigma modulators for isolated high-voltage measurements Jan. 09, 2015
Technical article Part III: Get CerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained Dec. 02, 2014
Application note Designing Low Cost Flyback Power Supply Using Boost Converter (TPS61165) for HF Apr. 17, 2014
Application note Replacement of Input Main Sensing Transformer in Inverters with Isolate Amplifie Aug. 21, 2012

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description

The AMC1100 is an isolated single-channel analog amplifier an output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. The AMC1100 is used in high-resolution measurement applications including current monitoring, industrial (...)

Features
  • 2mm, 2-terminal screw connectors to provide easy access to the analog inputs and outputs of the amplifier
  • ±250mV input range optimized for shunt resistor applications
  • Fully differential output with common mode voltage automatically adjusted to VDD2/2
View details

Software development

SUPPORT SOFTWARE Download
Electronic Minds digital power design support
Provided by Electronic Minds Ltd. — Electronic Minds is a world class team of engineers and technologists who are driven by one common desire – to rapidly innovate leading edge technology for their clients. Their expertise, proven experience, and attention to detail allows partners to deliver industry-leading Industrial, Grid (...)

Design tools & simulation

SIMULATION MODEL Download
SBAM153.TSC (123 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBAM154.ZIP (28 KB) - TINA-TI Spice Model
SIMULATION TOOL Download
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 (...)
Features
  • 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
  • (...)
View details

Reference designs

REFERENCE DESIGNS 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 document-generic User guide
REFERENCE DESIGNS Download
Isolated Current & Voltage Measurement Using Fully Differential Isolation Amplifier Reference Design
TIDA-00555 — The TIDA-00555 TI Design demonstrates using of AMC1100, a fully differential isolation amplifier, as an analog front end to measure voltage and current. It demonstrates measurement of voltage inputs in an input-to-output isolation configuration and current inputs in a channel-to-channel isolation (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Isolated Bias Supplies + Isolated Amplifier Combo for Line Voltage or Current Measurement
PMP9480 — PMP9480 is a dual  output Flybuck Converter plus an Isolated amplifier combo solution that can not only be used for sensing Line voltage or Line current but also  provide Aux Bias power for  complete Industrial system .  The design accepts very Wide input voltage of 10 Vin to (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (DWV) 8 View options
SOP (DUB) 8 View options

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