Reinforced isolated delta-sigma modulator for voltage sensing with ±1-V input range


Product details


Input range (Vp-p) 1V Interface type Serial CMOS Sample rate (Max) (MSPS) 21 Rating Catalog Isolation (kV peak) 8 CMTI (Min) (kV/µs) 80 Number of input channels 1 Architecture Delta-Sigma SNR (dB) 87 Operating temperature range (C) -40 to 125 INL (Max) (+/-LSB) 4 Power consumption (Typ) (mW) 33.7 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


  • Input structure optimized for voltage measurements:
    • Input voltage range: ±1 V
    • Input resistance: 1.5 GΩ (typ)
  • Excellent DC performance:
    • Offset error: ±0.5 mV (max)
    • Offset drift: ±4 µV/°C (max)
    • Gain error: ±0.25% (max)
    • Gain drift: ±40 ppm/°C (max)
  • Transient immunity: 115 kV/µs (typ)
  • Missing high-side supply detection
  • Safety-related certifications:
    • 8000-VPEAK reinforced isolation per DIN VDE V 0884-11: 2017-01
    • 5700-VRMS isolation for 1 minute per UL1577
    • IEC 62368-1 end equipment standard

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The AMC1336 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 8000 VPEAK 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 unique wide, bipolar. ±1-V input voltage range of the AMC1336 and its high input resistance support direct connection of the device to resistive dividers in high-voltage applications. When used with a digital filter (for instance, as integrated in the TMS320F28004x, TMS320F2807x or TMS320F2837x microcontroller families) to decimate the output bitstream, the device can achieve 16 bits of resolution with a dynamic range of 87 dB at a data rate of 82 kSPS.

On the high-side, the AMC1336 is supplied by a
3.3-V or 5-V power supply. The isolated digital interface operates from a 3.0-V, 3.3-V or 5-V power supply.

The AMC1336 performance is specified over the extended industrial temperature range of –40°C to +125°C.

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Technical documentation

Design & development

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Hardware development

document-generic User guide

The AMC1336 evaluation module (EVM) is a platform for evaluating the AMC1336 device, which is a reinforced isolated delta-sigma modulator for voltage sensing. AMC1336 is a 1-bit modulator with an output buffer separated from the input interface circuitry by a silicon dioxide (SiO2 (...)

  • Full-featured evaluation board for AMC1336 single-channel delta-sigma modulator
  • Configurable AVDD and DVDD power supplies
  • Screw terminals for easy access to analog inputs and digital outputs

Design tools & simulation

SBAM434.ZIP (21 KB) - IBIS Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
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
SBAR010.ZIP (3354 KB)

Reference designs

Isolated delta-sigma modulator based AC/DC voltage and current measurement module reference design
TIDA-00080 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 eliminates (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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SOIC (DWV) 8 View options

Ordering & quality

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