AMC22C11DR

Overview

The AMC22C11DR is a fast-response basic isolated comparator in an 8-pin SOIC package. It features a high-side supply range of 3V to 27V and a low-side supply range of 2.7V to 5.5V. The device provides adjustable trip thresholds from 20mV to 2.7V with a reference current of 100μA (±1%). Key electrical parameters include a typical propagation delay of 240ns, a minimum common-mode transient immunity (CMTI) of 75V/ns, and an open-drain output with optional latch mode. It operates over an extended industrial temperature range of –40°C to +125°C.

Feature Summary

• Provides galvanic isolation between input circuitry and open-drain output, offering high resistance to magnetic interference.
• Features an adjustable trip threshold set via a single external resistor, supporting both low-hysteresis and high-hysteresis modes.
• Supports transparent mode or latch mode for the digital output, allowing state retention upon request.
• Certified for safety-related applications with basic isolation ratings per DIN EN IEC 60747-17 and UL1577 standards.

Applications

• Overcurrent detection in motor drives
• Overvoltage detection in frequency inverters
• Protection circuits in solar inverters
• Fault detection in DC/DC converters

Procurement Notes

Verify that the ordering suffix 'DR' corresponds to the tape-and-reel packaging format specified in the manufacturer's orderable addendum. Confirm that the component meets the specific insulation requirements for your application, as the device is certified for basic isolation only. Ensure compliance with the recommended operating conditions regarding supply voltages and thermal limits during integration.

Selection Notes

Select this component when high-speed response and robust noise immunity are required in isolated environments. The wide high-side voltage range accommodates various power bus architectures. Consider the latch functionality if signal debouncing or fault latching is necessary. Verify that the PCB layout allows for maintaining the required creepage and clearance distances to preserve the device's isolation ratings.

Part Context

The AMC22C11 belongs to Texas Instruments' family of basic isolated comparators designed for industrial and energy applications. Unlike standard comparators, it integrates a high-voltage isolation barrier within an 8-pin SOIC footprint. This design enables direct interfacing between low-voltage control logic and high-voltage power stages without external discrete isolation components.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.