Product details

Device type Current sensing Peak-to-peak input voltage range (V) 250mV Interface type Serial Sample rate (max) (Msps) 0.078 Rating Catalog CMTI (min) (kV/µs) 15 Number of input channels 1 Architecture Delta-Sigma SNR (dB) -80 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 88 SFDR (dB) 78 Isolation rating Basic Withstand isolation voltage (VISO) (Vrms) 3000 Working isolation voltage (VIOWM) (Vrms) 849 Transient isolation voltage (VIOTM) (VPK) 4.25 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5
Device type Current sensing Peak-to-peak input voltage range (V) 250mV Interface type Serial Sample rate (max) (Msps) 0.078 Rating Catalog CMTI (min) (kV/µs) 15 Number of input channels 1 Architecture Delta-Sigma SNR (dB) -80 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 88 SFDR (dB) 78 Isolation rating Basic Withstand isolation voltage (VISO) (Vrms) 3000 Working isolation voltage (VIOWM) (Vrms) 849 Transient isolation voltage (VIOTM) (VPK) 4.25 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5
SOIC (DW) 16 106.09 mm² 10.3 x 10.3 SOIC (DWV) 8 67.275 mm² 5.85 x 11.5
  • ±250-mV input voltage range optimized for shunt resistors
  • Safety-related certifications:
    • 4250-VPK (AMC1204B) basic isolation per DIN VDE V 0884-11: 2017-01
    • 3005-VRMS (AMC1204B) isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1
    • Working voltage: 1200 VPEAK
    • Transient immunity: 15 kV/µs
  • High electromagnetic field immunity
    (see SLLA181A application report)
  • Outstanding AC performance:
    • SNR: 84 dB (minimum)
    • THD: –80 dB (maximum)
  • Excellent DC precision:
    • INL: ±8 LSB (maximum)
    • Gain Error: ±2% (maximum)
  • External clock input for easier synchronization
  • Fully specified over the extended industrial temperature range
  • ±250-mV input voltage range optimized for shunt resistors
  • Safety-related certifications:
    • 4250-VPK (AMC1204B) basic isolation per DIN VDE V 0884-11: 2017-01
    • 3005-VRMS (AMC1204B) isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1
    • Working voltage: 1200 VPEAK
    • Transient immunity: 15 kV/µs
  • High electromagnetic field immunity
    (see SLLA181A application report)
  • Outstanding AC performance:
    • SNR: 84 dB (minimum)
    • THD: –80 dB (maximum)
  • Excellent DC precision:
    • INL: ±8 LSB (maximum)
    • Gain Error: ±2% (maximum)
  • External clock input for easier synchronization
  • Fully specified over the extended industrial temperature range

The AMC1204 and AMC1204B are 1-bit digital output, isolated delta-sigma (ΔΣ) modulators that can be clocked at up to 20 MHz. The digital isolation of the modulator output is provided by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide basic galvanic isolation of up to 4000 VPEAK (AMC1204) and 4250 VPEAK (AMC1204B) according to UL1577, VDE V 0884-11, and CSA standards or specifications.

The AMC1204 and AMC1204B provide a single-chip solution for measuring the small signal of a shunt resistor across an isolated barrier. These types of resistors are typically used to sense currents in motor control inverters, green energy generation systems, and other industrial applications. The AMC1204 and AMC1204B differential inputs easily connect to the shunt resistor or other low-level signal sources. An internal reference eliminates the need for external components. When used with an appropriate external digital filter, an effective number of bits (ENOB) of 14 is achieved at a data rate of 78 kSPS.

A 5-V analog supply (AVDD) is used by the modulator while the isolated digital interface operates from a 3-V, 3.3-V, or 5-V supply (DVDD). The AMC1204 and AMC1204B are available in SOIC-16 (DW) and SOIC-8 (DWV) packages and are specified from –40°C to 105°C.

The AMC1204 and AMC1204B are 1-bit digital output, isolated delta-sigma (ΔΣ) modulators that can be clocked at up to 20 MHz. The digital isolation of the modulator output is provided by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide basic galvanic isolation of up to 4000 VPEAK (AMC1204) and 4250 VPEAK (AMC1204B) according to UL1577, VDE V 0884-11, and CSA standards or specifications.

The AMC1204 and AMC1204B provide a single-chip solution for measuring the small signal of a shunt resistor across an isolated barrier. These types of resistors are typically used to sense currents in motor control inverters, green energy generation systems, and other industrial applications. The AMC1204 and AMC1204B differential inputs easily connect to the shunt resistor or other low-level signal sources. An internal reference eliminates the need for external components. When used with an appropriate external digital filter, an effective number of bits (ENOB) of 14 is achieved at a data rate of 78 kSPS.

A 5-V analog supply (AVDD) is used by the modulator while the isolated digital interface operates from a 3-V, 3.3-V, or 5-V supply (DVDD). The AMC1204 and AMC1204B are available in SOIC-16 (DW) and SOIC-8 (DWV) packages and are specified from –40°C to 105°C.

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Technical documentation

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Type Title Date
* Data sheet AMC1204 20-MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement datasheet (Rev. F) PDF | HTML 11 Feb 2020
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. W) 31 Jan 2024
Application brief Shunt Resistor Selection for Isolated Data Converters PDF | HTML 04 May 2023
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 1 (Rev. A) 05 Aug 2022
White paper Comparing isolated amplifiers and isolated modulators (Rev. A) 28 Feb 2019
Certificate CSA Certification (Certificate: 220991) (Rev. A) 23 Oct 2015
Application note How to Optimize Performance of AMC1204 in Voltage Sensing 31 Aug 2015
Application note TIC Digital Interface (Rev. A) 02 Dec 2013
EVM User's guide AMC1204EVM User Guide 06 Aug 2010

Design & development

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

Evaluation board

AMC1204EVM — AMC1204 evaluation module for 1-bit, 20-MHz, second-order, isolated delta-sigma modulator

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 (...)

User guide: PDF
Not available on TI.com
Evaluation board

AMC1210MB-EVM — AMC1210 motherboard evaluation module

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 (...)

User guide: PDF
Evaluation board

PP-SALB2-EVM — PP-SALB2-EVM Smart amp speaker characterization board evaluation module (Learning Board 2)

This board supports: TAS2555YZEVMTAS2557EVM and TAS2559EVM.

The Smart Amplifier Speaker Characterization Board, when used in conjunction with a supported TI Smart Amplifier and PurePath Console software, provides users the ability to measure speaker excursion, temperature and other parameters for (...)

User guide: PDF
Not available on TI.com
Simulation model

AMC1204 IBIS Model

SBAM095.ZIP (41 KB) - IBIS Model
Calculation tool

SBAR010 Delta Sigma Modulator Filter Calculator

Supported products & hardware

Supported products & hardware

Products
Isolated ADCs
AMC1106E05 Small Basic Isolated Delta-Sigma Modulator With ±50mV Input and Manchester-Encoded CMOS Interface AMC1106M05 ±50-mV input, precision current sensing basic isolated modulator AMC1203 ±250-mV input, precision current sensing basic isolated modulator with int clock AMC1204 ±250-mV input, precision current sensing basic isolated modulator AMC1204-Q1 Automotive, ±250-mV input, precision current sensing basic isolated modulator AMC1210 4-channel digital filter for delta-sigma modulators AMC1303E0510 ±50-mV input, current sensing reinforced isolated modulator with 10-MHz int clock & Manchester code AMC1303E0520 ±50-mV input, current sensing reinforced isolated modulator with 20-MHz int clock & Manchester code AMC1303E2510 ±250-mV input, current sensing reinforced isolated modulator with 10-MHz int clock & Manchester code AMC1303E2520 ±250-mV input, current sensing reinforced isolated modulator with 20-MHz int clock & Manchester code AMC1303M0510 ±50-mV input, precision current sensing reinforced isolated modulator with 10-MHz int clock AMC1303M0520 ±50-mV input, precision current sensing reinforced isolated modulator with 20-MHz int clock AMC1303M2510 ±250-mV input, precision current sensing reinforced isolated modulator with 10-MHz int clock AMC1303M2520 ±250-mV input, precision current sensing reinforced isolated modulator with 20-MHz int clock AMC1304L05 ±50-mV input, precision current sensing reinforced isolated modulator with LDO & LVDS interface AMC1304L05-Q1 Automotive, ±50-mV input, current sensing reinforced isolated modulator with LDO & LVDS interface AMC1304L25 ±250-mV input, precision current sensing reinforced isolated modulator with LDO & LVDS Interface AMC1304L25-Q1 Automotive, ±250-mV input, current sensing reinforced isolated modulator with LDO & LVDS Interface AMC1304M05 ±50-mV input, precision current sensing reinforced isolated modulator with LDO AMC1304M05-Q1 Automotive, ±50-mV input, precision current sensing reinforced isolated modulator with LDO AMC1304M25 ±250-mV input, precision current sensing reinforced isolated modulator with LDO AMC1304M25-Q1 Automotive, ±250-mV input, precision current sensing reinforced isolated modulator with LDO AMC1305L25 ±250-mV input, precision current sensing reinforced isolated modulator with LVDS interface AMC1305L25-Q1 Automotive, ±250-mV input, current sensing reinforced isolated modulator with LVDS Interface AMC1305M05 ±50-mV input, precision current sensing reinforced isolated modulator AMC1305M05-Q1 Automotive, ±50-mV input, precision current sensing reinforced isolated modulator AMC1305M25 ±250-mV input, precision current sensing reinforced isolated modulator AMC1305M25-Q1 Automotive, ±250-mV input, precision current sensing reinforced isolated modulator AMC1306E05 ±50-mV input, precision current sensing reinforced isolated modulator with Manchester code AMC1306E25 ±250-mV input, precision current sensing reinforced isolated modulator with Manchester code AMC1306M05 ±50-mV input, precision current sensing reinforced isolated modulator AMC1306M25 ±250-mV input, precision current sensing reinforced isolated modulator AMC1336 ±1-V input, precision voltage sensing reinforced isolated modulator AMC1336-Q1 Automotive, ±1-V input, precision voltage sensing reinforced isolated delta-sigma modulator AMC3306M05 ±50-mV input, precision current sensing reinforced isolated modulator with integrated DC/DC AMC3306M25 ±250-mV input, precision current sensing reinforced isolated modulator with integrated DC/DC AMC3336 ±1-V input, precision voltage sensing reinforced isolated modulator with integrated DC/DC AMC3336-Q1 Automotive ±1-V input, precision voltage sensing reinforced isolated modulator with integrated DC/DC
Precision ADCs
ADS1201 High Dynamic Range Delta-Sigma Modulator ADS1202 Current-shunt delta-sigma modulator, 10MHz CLK, +/-250mV input, 16-bit resolution ADS1203 Current-shunt delta-sigma modulator, 10MHz CLK, +/-250mV input, 16-bit resolution, ext ref option ADS1204 Four Delta-Sigma Modulators, 10MHz CLK, 0-5V Input, 16-Bit Resolution ADS1205 Two 1-Bit, 10MHz, 2nd-Order, Delta-Sigma Modulator ADS1208 10MHz Modulator With Built-in Current Excitation for Hall Sensors ADS1209 16-Bit, 10MHz, 2-Ch, Delta-Sigma Modulator AMC1035 Precision delta-sigma modulator with ±1-V bipolar input and 2.5-V reference output AMC1035-Q1 Automotive precision delta-sigma modulator with ±1-V bipolar input and 2.5-V reference output
Hardware development
Evaluation board
AMC1304L25EVM AMC1304L25 Evaluation Module
Reference designs

TIDM-SERVODRIVE — Industrial Servo Drive and AC Inverter Drive Reference Design

The DesignDRIVE Development Kit is a reference design for a complete industrial drive directly connecting to a three phase ACI or PMSM motor. Many drive topologies can be created from the combined control, power and communications technologies included on this single platform.  Includes (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDM-02006 — Distributed multi-axis servo drive over fast serial interface (FSI) reference design

This reference design presents an example distributed or decentralized multi-axis servo drive over Fast Serial Interface (FSI) using C2000™ real-time controllers. Multi-axis servo drives are used in many applications such as factory automation and robots. The cost per axis, performance and (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-RESOLVER-APPLICATIONS-REFERENCE-DESIGN — Motherboard/controller for the AMC1210

This is a reference design for resolver applications and part of a modular system for evaluating our 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 to support data (...)
Test report: PDF
Schematic: PDF
Package Pins Download
SOIC (DW) 16 View options
SOIC (DWV) 8 View options

Ordering & quality

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  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring

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