AMC23C15DWVR

Overview

The AMC23C15DWVR is a dual, fast-response reinforced isolated window comparator manufactured by Texas Instruments. It features a wide high-side supply range of 3V to 27V and a low-side supply range of 2.7V to 5.5V. The device includes one adjustable window comparator (±5mV to ±300mV) and one fixed threshold comparator (±60mV). It supports positive-comparator mode with thresholds up to 2.7V. Key electrical parameters include a typical propagation delay of 280ns, minimum common-mode transient immunity (CMTI) of 15V/ns, and an input bias current of 25nA. It operates over an extended industrial temperature range from –40°C to +125°C.

Feature Summary

• Dual channel architecture with one adjustable and one fixed threshold window comparator for versatile signal monitoring.
• Reinforced galvanic isolation barrier certified for safety standards including VDE 0884-17 and UL1577.
• High common-mode transient immunity ensures reliable operation in electrically noisy environments.
• Supports positive-comparator mode for unipolar voltage monitoring applications.

Applications

• Overcurrent or overvoltage detection in solid-state relays
• Protection circuits in motor drives
• Fault detection in frequency inverters
• Monitoring systems in solar inverters
• Isolation protection in DC/DC converters

Procurement Notes

Verify the specific ordering suffix DWVR corresponds to the SOIC-8 package and tape-and-reel packaging format required for your assembly process. Confirm that the component meets the necessary RoHS compliance standards for your region. Ensure that the design accounts for the specified thermal resistance and power dissipation limits under maximum operating conditions to maintain reliability.

Selection Notes

Select this component when dual-channel isolation with distinct threshold configurations is required. The adjustable threshold allows customization for specific trip points, while the fixed comparator provides a constant reference. Consider the high CMTI rating if the application involves rapid voltage transients across the isolation barrier. Verify that the supply voltage ranges align with the system's high-side and low-side power rails.

Part Context

The AMC23C15 belongs to the AMC23C series of isolated comparators from Texas Instruments. This family focuses on providing reinforced isolation for analog signal comparison in high-voltage environments. The DWVR suffix indicates a specific package variant suitable for surface-mount technology, designed for integration into compact electronic assemblies requiring robust galvanic separation.

Replacement Considerations

Check datasheets for other AMC23C series variants such as AMC23C10 or AMC23C12 for single-channel alternatives. Ensure any substitute maintains equivalent reinforced isolation ratings and CMTI specifications to preserve system safety integrity.

FAQ

How does the REF pin determine the operating mode?

The voltage level on the REF pin determines the mode. If VREF is greater than approximately 550mV, the device operates in positive-comparator mode, disabling negative comparators. Lower voltages enable the standard window comparator mode.

What is the function of the fixed threshold comparator?

One of the comparators has a fixed threshold of ±60mV. This provides a constant trip point independent of external resistor adjustments, useful for baseline protection or reference monitoring.