AMC1203

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1-Bit, 10MHz, 2nd-Order, Isolated Delta-Sigma Modulator

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Product details

Parameters

Input range (Vp-p) 250mV Interface type Serial Sample rate (Max) (MSPS) 0.04 Rating Catalog Isolation (kV peak) 4 CMTI (Min) (kV/µs) 15 Number of input channels 1 Architecture Delta-Sigma SNR (dB) 85 Operating temperature range (C) -40 to 105 INL (Max) (+/-LSB) 6 Power consumption (Typ) (mW) 80 open-in-new Find other Isolated ADCs

Package | Pins | Size

SOIC (DW) 16 77 mm² 10.3 x 7.5 SOP (DUB) 8 99 mm² 9.5 x 10.4 SOP (PSA) 8 42 mm² 5.27 x 7.9 open-in-new Find other Isolated ADCs

Features

  • 16-Bit Resolution
  • SNR: 80.5dB min
  • THD: –88dB max (AMC1203B)
  • ±280mV Input Range with +5V Supply
  • Internal 2.5V Reference Voltage: 1% Accuracy
  • Gain Error: ±1% (AMC1203B)
  • UL1577, IEC60747-5-2 (VDE0884, Rev. 2), and IEC61010-1 Approved
    • Isolation: 4000VPEAK,
      Working Voltage: 560V
    • Transient Immunity: 15kV/µs
  • Typical 25-Year Life at Rated Working Voltage
    (see Application Report SLLA197)
  • Specified Temperature Range:
    –40°C to +105°C
  • APPLICATIONS
    • Shunt Based Current Sensing in:
      • Motor Control
      • Uninterruptible Power Supplies
      • Power Inverters
      • Industrial Process Control

All other trademarks are the property of their respective owners

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Description

The AMC1203 is a 1-bit, 10MHz, isolated delta-sigma (ΔΣ) modulator with an output buffer separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. This barrier provides galvanic isolation of up to 4000VPEAK. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry.

The AMC1203 modulator operates from a +5V supply with a dynamic range of 95dB. The differential inputs are ideal for direct connection to shunt resistors or other low-level signal sources. With the appropriate digital filter and modulator rate, the device can be used to achieve 16-bit analog-to-digital (A/D) conversion with no missing codes. An effective resolution of 14 bits and an SNR of 85dB (typical) can be maintained with a sinc3 filter with a decimation ratio of 256.

The modulator output is translated to a balanced signal and then transferred by the capacitive isolation barrier. Across the isolation barrier, a differential comparator receives the logic transition information, and then sets or resets a flip-flop and the output circuit accordingly.

The AMC1203 is available in SOP-8 gull-wing, SOP-8, and SOIC-16 packages. The AMC1203 is characterized for operation over the ambient temperature range of –40°C to +105°C.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet 1-Bit, 10MHz, 2nd-Order, Isolated Delta-Sigma Modulator datasheet (Rev. C) Jun. 10, 2011
White paper Best in Class Radiated Emissions EMI Perf. with AMC1300B-Q1 Isolated Amplifier Jun. 29, 2020
Technical articles Isolation 101: How to find the right isolation solution for your application Feb. 11, 2020
Technical articles Chief Technology Officer Ahmad Bahai discusses isolation in a world of collaboration Oct. 02, 2018
More literature UL Certification (File: E181974 Project: 478705069) (Rev. C) Jun. 11, 2018
Technical articles Why capacitive isolation: a vital building block for sensors in smart cities Jan. 16, 2018
Technical articles The top trends in high-voltage power, from isolation to wide-bandgap technologies Dec. 06, 2017
User guide AMC1210MB-EVM User's Guide (Rev. A) Feb. 04, 2016
More literature CSA Certification (Certificate: 220991) (Rev. A) Oct. 23, 2015
User guide AMC1204EVM User Guide (Rev. A) Sep. 04, 2013
User guide AMC1203EVM User's Guide Aug. 06, 2010
User guide AMC1204EVM User Guide Aug. 06, 2010

Design & development

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

Hardware development

EVALUATION BOARD Download
25
Description

The AMC1203 is an isolated single-channel delta-sigma (ΔΣ) modulator used in high-resolution measurement applications including current monitoring, industrial process control and motor positioning systems. The AMC1203EVM is a small form factor board containing all the necessary components (...)

Features
  • 2mm, 2-terminal screw connectors to provide easy access to the analog inputs of the modulator
  • 9-pin D-sub connector to provide modulator data (MDAT) and modulator clock (MCLK) outputs
  • Compatible with the AMC1210 Digital Filter Chip
EVALUATION BOARD Download
75
Description

The AMC1204 is an isolated single-channel delta-sigma (ΔΣ) modulator used in high-resolution measurement applications including current monitoring, industrial process control and motor positioning systems. The AMC1204EVM is a small form factor board containing all the necessary components (...)

Features
  • 2mm, 2-terminal screw connectors to provide easy access to the analog inputs of the modulator
  • 9-pin sub-D connector to provide modulator digital output (DATA) and modulator clock input (CLKIN)
  • Compatible with the AMC1210 Digital Filter Chip
EVALUATION BOARD Download
Description

The AMC1210MB-EVM is a complete evaluation kit for the AMC1210 & ADS1205 in resolver applications and part of a modular evaluation system for evaluating TI delta-sigma modulators. The AMC1210MB-EVM software allows use of the AMC1210 in a variety of configurations for resolver and current shunt (...)

Features
  • Full-featured evaluation board for the AMC1210 quad digital filter for second-order delta-sigma modulators
  • Contains all support circuitry needed for the AMC1210
  • Onboard clocking for built-in ADS1205
  • Stellaris™ LM3S3748 ARM™ processor and parallel interface to AMC1210
  • JTAG header for reprogramming the (...)

Design tools & simulation

SIMULATION MODEL Download
SLOM167.ZIP (20 KB) - IBIS 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
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
CALCULATION TOOL Download
SBAR010.ZIP (3354 KB)

Reference designs

REFERENCE DESIGNS Download
Motherboard/controller for the AMC1210
TIDA-RESOLVER-APPLICATIONS-REFERENCE-DESIGN This reference design is a complete solution for resolver applications and part of a modular system for evaluating TI delta-sigma modulators. The software included allows use of the AMC1210 in a variety of configurations for resolver and current shunt applications and features a data-export utility (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOIC (DW) 16 View options
SOP (DUB) 8 View options
SOP (PSA) 8 View options

Ordering & quality

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  • Ongoing reliability monitoring

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