Isolated ADCs

High-performance isolated ADCs for high-voltage systems

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Isolated ADCs, also known as isolated modulators, output a digital bitstream from a precise delta-sigma modulator capable of withstanding high common-mode voltages. Our portfolio of isolated ADCs consists of basic and reinforced isolated modulators for high-performance current and voltage sensing applications in high-voltage systems.

Featured isolated modulators

Design & development resources

Reference design
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 (...)

Reference design
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 (...)

Reference design
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 (...)

AMC1333M10 NEW

±1-V input, reinforced isolated modulator with 10-MHz internal clock and CMOS interface

Approx. price (USD) 1ku | 2.88
AMC1306M25-Q1 NEW

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

Approx. price (USD) 1ku | 3.541
AMC1306M05-Q1 NEW

Automotive, ±50-mV input, precision current sensing reinforced isolated modulator

Approx. price (USD) 1ku | 3.712

Technical resources

Selection guide
Selection guide
Understanding isolation terminology and relevance
This quick guide can serve as a reference for experienced designers or a starting point for engineers who are new to understanding isolation technologies. 
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White paper
White paper
Comparing isolated amplifiers and isolated modulators (Rev. A)
This document compares isolated amplifiers and isolated-modulator-based solutions, and explains some unique advantages of isolated-modulator-based solutions.
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White paper
White paper
High Voltage Isolation Quality and Reliability for AMC130x
Understand the high-voltage isolation quality and reliability of devices such as the industry's highest performing reinforced isolated amplifier, the AMC1301.
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