LTC1541IMS8#TRPBF

Overview

The LTC1541IMS8#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, 12kHz gain-bandwidth product, and 8V/ms slew rate. The comparator includes internal hysteresis of ±2.25mV. The device provides a 1.2V ±1% reference output capable of sourcing up to 2mA.

Feature Summary

• Combines a micropower op amp, comparator, and precision reference in a single 8-pin package
• Op amp output stage swings rail-to-rail while maintaining stability driving capacitive loads up to 1000pF
• Comparator input range includes ground and extends to within 1.3V of the positive supply
• Internal bandgap reference provides a stable 1.2V output with low load regulation

Applications

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

Procurement Notes

Verify that the ordering suffix #TRPBF confirms the component is supplied in tape and reel packaging and meets lead-free manufacturing standards. Confirm the IMS8 designation corresponds to the industrial temperature grade (-40°C to +85°C) and the MSOP package outline. Ensure compatibility with the specific application's voltage and current requirements before finalizing procurement.

Selection Notes

Select this component when space is limited due to its integration of three functions into one small package. It is suitable for applications requiring low quiescent current and high input impedance. The industrial temperature grade ensures reliable operation in automotive environments. Consider the 12kHz bandwidth limitation for signal processing needs compared to higher-speed amplifiers.

Part Context

This part belongs to the LTC1541/LTC1542 family of micropower mixed-signal devices. The IMS8 variant specifically denotes the industrial temperature range and MSOP package. It serves as a pin-compatible upgrade for older MAX951/MAX953 components. The family is designed for battery-operated equipment where power conservation and compact size are critical design constraints.

Replacement Considerations

The datasheet identifies the LTC1541/LTC1542 as a pin-compatible upgrade for MAX951 and MAX953 components.