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AMC1303M2520

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±250mV input, precision current sensing reinforced isolated modulator with 20MHz internal clock

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Data sheet

AMC1303M2520

ACTIVE
Data sheet Order now

Product details

Device type Current sensing Peak-to-peak input voltage range (V) 250mV Interface type Serial CMOS Sample rate (max) (Msps) 20 Rating Automotive, Catalog CMTI (min) (kV/µs) 50 Number of input channels 1 Architecture Delta-Sigma SNR (dB) 84.5 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 36 SFDR (dB) 98 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 Serial CMOS Sample rate (max) (Msps) 20 Rating Automotive, Catalog CMTI (min) (kV/µs) 50 Number of input channels 1 Architecture Delta-Sigma SNR (dB) 84.5 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 36 SFDR (dB) 98 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 (DWV) 8 67.275 mm² 5.85 x 11.5
  • Pin-compatible family optimized for shunt-resistor-based current measurements:
    • ±50mV or ±250mV input voltage ranges
    • Manchester-coded or uncoded bitstream options
    • 10MHz and 20MHz clock options
  • Excellent DC performance:
    • Offset error: ±50µV or ±100µV (max)
    • Offset drift: ±1µV/°C (max)
    • Gain error: ±0.2% (max)
    • Gain drift: ±40ppm/°C (max)
  • Transient immunity: 100kV/µs (typ)
  • System-level diagnostic features
  • Safety-related certifications:
    • 7000VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 5000VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and IEC 62368-1 end equipment standard
  • Fully specified over the extended industrial temperature range: –40°C to +125°C
  • Pin-compatible family optimized for shunt-resistor-based current measurements:
    • ±50mV or ±250mV input voltage ranges
    • Manchester-coded or uncoded bitstream options
    • 10MHz and 20MHz clock options
  • Excellent DC performance:
    • Offset error: ±50µV or ±100µV (max)
    • Offset drift: ±1µV/°C (max)
    • Gain error: ±0.2% (max)
    • Gain drift: ±40ppm/°C (max)
  • Transient immunity: 100kV/µs (typ)
  • System-level diagnostic features
  • Safety-related certifications:
    • 7000VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 5000VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and IEC 62368-1 end equipment standard
  • Fully specified over the extended industrial temperature range: –40°C to +125°C

The AMC1303 (AMC1303x0510, AMC1303x0520, AMC1303x2510, and AMC1303x2520) is a family of precision, isolated delta-sigma (ΔΣ) modulators. The output is separated from the input circuitry by a capacitive isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation of up to 7000VPK according to the DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards, and supports a working voltage up to 1.5kVRMS

The input of the AMC1303 device is optimized for direct connection to shunt resistors or other, low-impedance signal sources. The small size, high DC accuracy, low temperature drift, and high common-mode transient immunity (CMTI) support accurate isolated current sensing in noisy high-voltage applications.

The output bitstream of the AMC1303 is synchronized to the internally generated clock and is Manchester coded (AMC1303Ex) or uncoded (AMC1303Mx). Combined with a digital low-pass filter (such as a Sinc-filter) the device achieves 85dB of dynamic range at an effective output data rate of 78kSPS.

The AMC1303 (AMC1303x0510, AMC1303x0520, AMC1303x2510, and AMC1303x2520) is a family of precision, isolated delta-sigma (ΔΣ) modulators. The output is separated from the input circuitry by a capacitive isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation of up to 7000VPK according to the DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards, and supports a working voltage up to 1.5kVRMS

The input of the AMC1303 device is optimized for direct connection to shunt resistors or other, low-impedance signal sources. The small size, high DC accuracy, low temperature drift, and high common-mode transient immunity (CMTI) support accurate isolated current sensing in noisy high-voltage applications.

The output bitstream of the AMC1303 is synchronized to the internally generated clock and is Manchester coded (AMC1303Ex) or uncoded (AMC1303Mx). Combined with a digital low-pass filter (such as a Sinc-filter) the device achieves 85dB of dynamic range at an effective output data rate of 78kSPS.
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Technical documentation

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* Data sheet AMC1303x Small, High-Precision, Reinforced Isolated Delta-Sigma Modulators With Internal Clock datasheet (Rev. D) PDF | HTML 29 Oct 2024
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. Z) 08 Jan 2026
Application note MCU로의 절연 모듈레이터 디지털 인터페이스를 사용한 클록 에지 지 연 보상 (Rev. A) PDF | HTML 21 Aug 2024
White paper Vergleich isolierter Verstärker und isolierter Modulatoren (Rev. B) PDF | HTML 19 Aug 2024
White paper 절연 증폭기와 절연 모듈레이터 비교 (Rev. B) PDF | HTML 19 Aug 2024
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 note Taktflankenverzögerungskompensation mit isolierten Modulatoren Digitale Schnittstelle zu MCUs (Rev. A) PDF | HTML 16 Jul 2024
White paper Comparing Isolated Amplifiers and Isolated Modulators (Rev. B) PDF | HTML 04 Jun 2024
Application note Clock Edge Delay Compensation With Isolated Modulators Digital Interface to MCUs (Rev. A) PDF | HTML 12 Jan 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
Certificate UL Certificate of Compliance Vol4 Sec5 E181974 (Rev. A) 23 Jan 2023
Certificate TUEV Technical Report No. 713203936 20 Oct 2021

Design & development

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

Evaluation board

AMC1303EVM — AMC1303 small, high-precision, reinforced isolated modulator evaluation module

The AMC1303 devices are 1-bit modulators with an output buffer separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. The isolation barrier provides galvanic isolation of up to 8000 VPEAK. When used in combination with an FPGA or other digital filter, AMC1303 (...)
User guide: PDF
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Simulation model

AMC1303X IBIS Model

SBAM327.ZIP (29 KB) - IBIS Model
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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
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Calculation tool

SBAR010 — Delta Sigma Modulator Filter Calculator

Supported products & hardware

Supported products & hardware
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Calculation tool

SBAR013 — Isolated Amplifier Voltage Sensing Excel Calculator

This calculator provides estimates of the errors associated with using isolation amplifier devices in a voltage sensing configuration.
Supported products & hardware

Supported products & hardware
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Calculation tool

SBAR020 — Isolated Amplifier Current Sensing Excel Calculator

This calculator provides estimates of the errors associated with using isolation amplifier devices in a current sensing configuration.
Supported products & hardware

Supported products & hardware
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Reference designs

TIDA-01349 — IPM Interface Reference Design for Inverters Using Single Package Six Channel Digital Isolator

This reference design realizes a three-phase inverter subsystem for AC inverter drives and servo drives using an intelligent power module (IPM). Reinforced isolation is present between the microcontroller (MCU) and the IPM-based power stage. The PWM signals are isolated using the single-package, (...)
Design guide: PDF
Schematic: PDF
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