LTC1541CMS8#TRPBF

Overview

The LTC1541CMS8#TRPBF is a micropower operational amplifier, comparator, and bandgap reference integrated in an 8-lead MSOP package. It operates from a single supply of 2.5V to 12.6V or dual supplies of ±1.25V to ±6.3V with a typical supply current of 5µA. The op amp features rail-to-rail output swing, unity-gain stability, and a gain-bandwidth product of 12kHz. The comparator includes internal hysteresis of ±2.25mV and has its inverting input internally connected to the 1.2V reference output.

Feature Summary

• Combines a micropower op amp, comparator, and 1.2V reference in a single 8-pin package
• Op amp output stage swings rail-to-rail while driving capacitive loads up to 1000pF
• Comparator features internal hysteresis for clean switching on slow-moving signals
• Input common mode range extends from the negative supply to within 1.3V of the positive supply

Applications

• Battery-powered systems
• Solar-powered systems
• Automotive keyless entry
• Low frequency local area alarms and detectors
• Infrared receivers for remote controls

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging and lead-free status. Confirm the 'C' grade designation matches the required commercial temperature operating range. Ensure the MSOP package variant aligns with the target PCB footprint design constraints.

Selection Notes

Select this component when space is limited due to the compact 8-lead MSOP form factor. Choose this part if the application requires a low quiescent current of 5µA to extend battery life. It is suitable for designs needing both amplification and threshold detection without requiring multiple discrete components.

Part Context

This device belongs to the LTC1541/LTC1542 family, which integrates analog signal conditioning functions into a single chip. The LTC1541 variant specifically includes an internal bandgap reference connected to the comparator's inverting input, distinguishing it from the standard comparator-only LTC1542 model.

Replacement Considerations

The datasheet identifies the MAX951 and MAX953 as pin-compatible upgrades.