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AMC1304M25-Q1

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Automotive, ±250-mV input, precision current sensing reinforced isolated modulator with LDO

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Data sheet

AMC1304M25-Q1

ACTIVE
Data sheet Order now

Product details

Device type Current sensing Peak-to-peak input voltage range (V) 250mV Interface type CMOS, Serial Sample rate (max) (Msps) 20 Rating Automotive 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 Automotive 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
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Temperature Grade 1: –40°C to +125°C
    • HBM ESD Classification Level 2
    • CDM ESD Classification Level C6
  • Pin-Compatible Family with:
    • ±50-mV or ±250-mV Input Voltage Ranges
    • CMOS or LVDS Digital Interface Options
  • Excellent DC Performance:
    • 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 V VDE V 0884-10 (VDE V 0884-10): 2006-12
    • 5000-VRMS Isolation for 1 Minute per UL1577
    • CAN/CSA No. 5A-Component Acceptance Service Notice
  • Transient Immunity: 15 kV/µs (min)
  • High Electromagnetic Field Immunity
    (see Application Note SLLA181A)
  • External 5-MHz to 20-MHz Clock Input
  • On-Chip 18-V LDO Regulator
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Temperature Grade 1: –40°C to +125°C
    • HBM ESD Classification Level 2
    • CDM ESD Classification Level C6
  • Pin-Compatible Family with:
    • ±50-mV or ±250-mV Input Voltage Ranges
    • CMOS or LVDS Digital Interface Options
  • Excellent DC Performance:
    • 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 V VDE V 0884-10 (VDE V 0884-10): 2006-12
    • 5000-VRMS Isolation for 1 Minute per UL1577
    • CAN/CSA No. 5A-Component Acceptance Service Notice
  • Transient Immunity: 15 kV/µs (min)
  • High Electromagnetic Field Immunity
    (see Application Note SLLA181A)
  • External 5-MHz to 20-MHz Clock Input
  • On-Chip 18-V LDO Regulator

The AMC1304-Q1 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 V VDE V 0884-10, 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-Q1 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-Q1 is available in a wide-body SOIC-16 (DW) package.

The AMC1304-Q1 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 V VDE V 0884-10, 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-Q1 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-Q1 is available in a wide-body SOIC-16 (DW) package.
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Technical documentation

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Type Title Date
* Data sheet AMC1304x-Q1 High-Precision, Reinforced Isolated Delta-Sigma Modulators with LDO datasheet PDF | HTML 09 Feb 2017
Application brief Shunt-Widerstandsauswahl für isolierte Datenwandler PDF | HTML 15 Aug 2024
Application brief 절연 데이터 컨버터를 위한 션트 레지스터 선택 PDF | HTML 15 Aug 2024
Application brief HEV/EV의 션트 및 홀 기반 절연 전류 감지 솔루션 비교 (Rev. C) PDF | HTML 16 Jul 2024
Application brief Vergleich von isolierten Shunt- und Hall-basierten Strommesslösungen in Hybrid- und Elektrofahrzeugen (Rev. C) PDF | HTML 16 Jul 2024
White paper Vergleich isolierter Verstärker und isolierter Modulatoren (Rev. B) PDF | HTML 02 Jul 2024
White paper 절연 증폭기와 절연 모듈레이터 비교 (Rev. B) PDF | HTML 02 Jul 2024
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. S) 29 Feb 2024
Application brief Shunt Resistor Selection for Isolated Data Converters PDF | HTML 04 May 2023
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 Mar 2023
Application brief Comparing shunt- and hall-based isolated current-sensing solutions in HEV/EV (Rev. C) PDF | HTML 28 Mar 2023
Certificate UL Certificate of Compliance Vol4 Sec5 E181974 (Rev. A) 23 Jan 2023
White paper Comparing isolated amplifiers and isolated modulators (Rev. A) 28 Feb 2019
EVM User's guide AMC1304EVM User's Guide 24 Oct 2014

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
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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 AMC3306M05-Q1 — Automotive, ±50-mV reinforced isolated modulator with integrated DC/DC AMC3306M25 — ±250-mV input, precision current sensing reinforced isolated modulator with integrated DC/DC AMC3306M25-Q1 — Automotive, ±250-mV 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
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
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