Product details

Device type Current sensing Peak-to-peak input voltage range (V) 250mV Interface type CMOS, Serial Sample rate (max) (Msps) 20 Rating Catalog CMTI (min) (kV/µs) 15 Number of input channels 1 Architecture Delta-Sigma SNR (dB) 85 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 58.9 SFDR (dB) 90 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Working isolation voltage (VIOWM) (Vrms) 1500 Transient isolation voltage (VIOTM) (VPK) 7 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5
Device type Current sensing Peak-to-peak input voltage range (V) 250mV Interface type CMOS, Serial Sample rate (max) (Msps) 20 Rating Catalog CMTI (min) (kV/µs) 15 Number of input channels 1 Architecture Delta-Sigma SNR (dB) 85 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 58.9 SFDR (dB) 90 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Working isolation voltage (VIOWM) (Vrms) 1500 Transient isolation voltage (VIOTM) (VPK) 7 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5
SOIC (DW) 16 106.09 mm² 10.3 x 10.3
  • Pin-compatible family optimized for shunt-resistor-based current measurements:
    • ±50-mV or ±250-mV input voltage ranges
    • CMOS or LVDS digital interface options
  • Excellent DC performance supporting high-precision sensing on system level:
    • Offset error: ±50 µV or ±100 µV (max)
    • Offset drift: 1.3 µV/°C (max)
    • Gain error: ±0.2% or ±0.3% (max)
    • Gain drift: ±40 ppm/°C (max)
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per
      DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and IEC 62368-1 end equipment standard
  • Transient immunity: 15 kV/µs (min)
  • High electromagnetic field immunity
    (see application note SLLA181A)
  • External 5-MHz to 20-MHz clock input for
    easier system-level synchronization
  • On-chip 18-V LDO regulator
  • Fully specified over the extended industrial temperature range
  • Pin-compatible family optimized for shunt-resistor-based current measurements:
    • ±50-mV or ±250-mV input voltage ranges
    • CMOS or LVDS digital interface options
  • Excellent DC performance supporting high-precision sensing on system level:
    • Offset error: ±50 µV or ±100 µV (max)
    • Offset drift: 1.3 µV/°C (max)
    • Gain error: ±0.2% or ±0.3% (max)
    • Gain drift: ±40 ppm/°C (max)
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per
      DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and IEC 62368-1 end equipment standard
  • Transient immunity: 15 kV/µs (min)
  • High electromagnetic field immunity
    (see application note SLLA181A)
  • External 5-MHz to 20-MHz clock input for
    easier system-level synchronization
  • On-chip 18-V LDO regulator
  • Fully specified over the extended industrial temperature range

The AMC1304 is a precision, delta-sigma (ΔΣ) modulator with the output separated from the input circuitry by a capacitive double isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation of up to 7000 VPEAK according to the DIN VDE V 0884-11, UL1577 and CSA standards. Used in conjunction with isolated power supplies, the device prevents noise currents on a high common-mode voltage line from entering the local system ground and interfering with or damaging low voltage circuitry.

The input of the AMC1304 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The unique low input voltage range of the ±50-mV device allows significant reduction of the power dissipation through the shunt while supporting excellent ac and dc performance. By using an appropriate digital filter (that is, as integrated on the TMS320F2807x or TMS320F2837x families) to decimate the bit stream, the device can achieve 16 bits of resolution with a dynamic range of 81 dB (13.2 ENOB) at a data rate of 78 kSPS.

On the high-side, the modulator is supplied by an integrated low-dropout (LDO) regulator that allows an unregulated input voltage between 4 V and 18 V (LDOIN). The isolated digital interface operates from a 3.3-V or 5-V power supply (DVDD).

The AMC1304 is available in a wide-body SOIC-16 (DW) package and is specified from –40°C to +125°C.

The AMC1304 is a precision, delta-sigma (ΔΣ) modulator with the output separated from the input circuitry by a capacitive double isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation of up to 7000 VPEAK according to the DIN VDE V 0884-11, UL1577 and CSA standards. Used in conjunction with isolated power supplies, the device prevents noise currents on a high common-mode voltage line from entering the local system ground and interfering with or damaging low voltage circuitry.

The input of the AMC1304 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The unique low input voltage range of the ±50-mV device allows significant reduction of the power dissipation through the shunt while supporting excellent ac and dc performance. By using an appropriate digital filter (that is, as integrated on the TMS320F2807x or TMS320F2837x families) to decimate the bit stream, the device can achieve 16 bits of resolution with a dynamic range of 81 dB (13.2 ENOB) at a data rate of 78 kSPS.

On the high-side, the modulator is supplied by an integrated low-dropout (LDO) regulator that allows an unregulated input voltage between 4 V and 18 V (LDOIN). The isolated digital interface operates from a 3.3-V or 5-V power supply (DVDD).

The AMC1304 is available in a wide-body SOIC-16 (DW) package and is specified from –40°C to +125°C.

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Design & development

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Evaluation board

AMC1304M25EVM — AMC1304M25 evaluation module for reinforced isolated modulator with LDO regulator and ±250-mV input

The AMC1304M25 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. AMC1304M25 evaluation module (EVM) is a small-form-factor board containing (...)

User guide: PDF
Not available on TI.com
Daughter card

TMDSCNCD28379D — F28379D development kit for C2000™ Delfino MCU controlCARD™

TMDSCNCD28379D is an HSEC180 controlCARD based evaluation and development tool for the F2837xD,  F2837xS, and F2807x series in the TI MCU. controlCARDs are ideal to use for initial evaluation and system prototyping. controlCARDs are complete board-level modules that utilize one of two standard (...)

User guide: PDF | HTML
Not available on TI.com
Development kit

TIEVM-HV-1PH-DCAC — Single phase inverter development kit with voltage source and grid connected modes

This reference design implements single phase inverter (DC-AC) control using the C2000™ F2837xD and F28004x microcontrollers. Design supports two modes of operation for the inverter. First is voltage source mode using an output LC filter, this control mode is typically used in Uninterrupted (...)
Not available on TI.com
Development kit

TMDXIDDK379D — C2000 DesignDRIVE Development Kit for Industrial Motor Control

The DesignDRIVE Development Kit (IDDK) hardware offers an integrated servo drive design with full power stage to drive a high voltage three-phase motor and eases the evaluation of a range of position feedback, current sensing and control topologies.

The sensing peripherals on the C2000™ MCU, (...)
User guide: PDF
Simulation model

AMC1305L25 IBIS Model (Rev. A)

SLAM225A.ZIP (15 KB) - IBIS Model
Calculation tool

MODULATOR-TIMING-EXCEL-CALC Isolated Modulator Digital Communication Timing Calculation Tool

Use this excel calculator to confirm the correct clock setup and hold timing compensation method with an isolated modulator and SDFM controller.
Supported products & hardware

Supported products & hardware

Products
Isolated ADCs
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 AMC1306M05-Q1 Automotive, ±50-mV input, precision current sensing reinforced isolated modulator AMC1306M25 ±250-mV input, precision current sensing reinforced isolated modulator AMC1306M25-Q1 Automotive, ±250-mV input, precision current sensing reinforced isolated modulator AMC1306M25E Reinforced isolated modulator with -55C extended temperature range 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
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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
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

TIDA-00080 — Isolated delta-sigma modulator based AC/DC voltage and current measurement module reference design

This isolated shunt based current measurement unit enables high accuracy current measurement without the use of Current Transformers (CT). The isolation is achieved through the use of AMC1304 that incorporates both high voltage isolation as well as the Delta-Sigma Modulator. This solution (...)
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

TIDM-HV-1PH-DCAC — Single-Phase Inverter Reference Design With Voltage Source and Grid Connected Modes

This reference design implements single-phase inverter (DC-AC) control using the C2000™ F2837xD and F28004x microcontrollers. Design supports two modes of operation for the inverter. First is the voltage source mode using an output LC filter. This control mode is typically used in (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00171 — Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives

This evaluation kit and reference design implements the AMC130x reinforced isolated delta-sigma modulators along with integrated Sinc filters in the C2000™ TMS320F28377D Delfino™ microcontroller. The design provides an ability to evaluate the  performance of these measurements: three motor (...)
User guide: PDF
Schematic: PDF
Reference designs

TIPD165 — Isolated, Shunt-Based Current Sensing Reference Design

This verified reference design implements isolated current sensing data acqusition based on AMC1304M25 isolated delta-sigma (ΔΣ) modulator and TMS320F28377D microcontroller. This design was made for shunt-based current measurement applications which require excellent galvanic (...)
User guide: PDF
Schematic: PDF
Reference designs

TIDA-00601 — Multi-phase Energy Measurement with Isolated Shunt Sensors Reference Design

The TIDA-00601 design implements a Class 0.5% three-phase energy measurement system with isolated shunt sensors.  The isolation is achieved through the use of isolated delta-sigma modulators that have output circuitry capacitively isolated from input circuitry.  An energy measurement SoC (...)
User guide: PDF
Schematic: PDF
Reference designs

TIDA-00738 — Extended Current and Voltage Measurement Using Shunts for Protection Relays Reference Design

This reference design demonstrates a unique approach for extending current measurement range using a single shunt and voltage measurement AMC1304Mx5 isolated delta-sigma (ΔΣ) modulator. With careful selection of a low-value shunt resistor that minimizes power dissipation, a (...)
User guide: PDF
Schematic: PDF
Reference designs

TIDA-00209 — Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives Using AM437x

This reference design uses the AMC130x reinforced isolated delta-sigma modulators along with AM437x Sitara™ ARM® Cortex® -A9 Processor, which implements Sinc filters on PRU-ICSS. The design provides an ability to evaluate the performance of these measurements: three motor currents, three (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
SOIC (DW) 16 View options

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