AMC1303M2520

ACTIVE

±250 mV-Input, Reinforced Isolated Modulator with 20 MHz Internal Clock and CMOS Interface

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±250 mV-Input,  Reinforced Isolated Modulator with 20 MHz Internal Clock and CMOS Interface

AMC1303M2520

ACTIVE

Product details

Parameters

Input range (Vp-p) ±250mV Interface Serial CMOS Sample rate (Max) (MSPS) 20 Rating Catalog Isolation (kV peak) 7 CMTI (Min) (kV/µs) 50 Number of input channels 1 Architecture Delta-Sigma SNR (dB) 84.5 Operating temperature range (C) -40 to 125 INL (Max) (+/-LSB) 4 Power consumption (Typ) (mW) 36 open-in-new Find other Isolated ADCs

Package | Pins | Size

SOIC (DWV) 8 67 mm² 5.85 x 11.5 open-in-new Find other Isolated ADCs

Features

  • Pin-compatible family optimized for shunt-resistor-based current measurements:
    • ±50-mV or ±250-mV input voltage ranges
    • Manchester coded or uncoded bistream options
    • 10-MHz and 20-MHz clock options
  • Excellent DC performance:
    • Offset error: ±50 µV or ±100 µV (max)
    • Offset drift: ±1 µV/°C (max)
    • Gain error: ±0.2% (max)
    • Gain drift: ±40 ppm/°C (max)
  • Transient immunity: 100 kV/µs (typ)
  • System-level diagnostic features
  • 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
  • Fully specified over the extended industrial temperature range: –40°C to +125°C

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Description

The AMC1303 (AMC1303x0510, AMC1303x0520, AMC1303x2510, and AMC1303x2520) is a family of precision, delta-sigma (ΔΣ) modulators 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 VPK according to the DIN VDE V 0884-11 and UL1577 standards. Used in conjunction with isolated power supplies, this isolated modulator separates parts of the system that operate on different common-mode voltage levels and protects lower-voltage parts from damage.

The input of the AMC1303 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The ±50-mV input voltage range option allows significant reduction of the power dissipation through the shunt. The output bit-stream of the AMC1303 is synchronized to the internally generated clock and is Manchester coded (AMC1303Ex) or uncoded (AMC1303Mx). By using an integrated digital filter (such as those in the TMS320F2807x or TMS320F2837x microcontroller families) to decimate the bitstream, the device can achieve 16 bits of resolution with a dynamic range of 85 dB at an effective output data rate of 78 kSPS.

The bitstream output of the Manchester coded AMC1303Ex versions supports single-wire data and clock transfer without having to consider the setup and hold time requirements of the receiving device.

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Technical documentation

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
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 (...)
Features
  • Full-featured evaluation board for the AMC1303 single-channel delta-sigma modulators
  • Configurable AVDD and DVDD power supplies
  • Screw terminals for easy access to analog inputs and digital outputs

Design tools & simulation

SIMULATION MODELS Download
SBAM327.ZIP (29 KB) - IBIS Model
SIMULATION TOOLS 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 (...)
document-generic User guide

Reference designs

REFERENCE DESIGNS Download
IPM Interface Reference Design for Inverters Using Single Package Six Channel Digital Isolator
TIDA-01349 — 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (DWV) 8 View options

Ordering & quality

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