LTC2640HTS8-LM8#TRPBF

Overview

The LTC2640HTS8-LM8#TRPBF is an 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in an 8-lead TSOT-23 package. It features a high-accuracy internal reference yielding a full-scale output of 4.096V, requiring a supply voltage between 4.5V and 5.5V. The device incorporates a rail-to-rail output buffer guaranteed monotonic over temperature, with a maximum integral nonlinearity error of ±2.5 LSBs. It utilizes a 3-wire SPI/MICROWIRE compatible serial interface operating at clock rates up to 50MHz. Power-on reset defaults the output to mid-scale, and the unit supports power-down modes for low current consumption.

Feature Summary

• Integrated precision reference providing 4.096V full-scale output
• Rail-to-rail output buffer guaranteed monotonic over temperature
• 3-wire SPI/MICROWIRE compatible serial interface with 50MHz clock rate
• Power-on reset to mid-scale option

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive
• Optical Networking

Procurement Notes

Verify the specific suffix #TRPBF indicates a 2,500-piece tape and reel packaging configuration as defined in the datasheet ordering information. Confirm that the H-grade designation aligns with the required automotive temperature range of –40°C to 125°C for the intended application environment.

Selection Notes

Select this part when a 4.096V full-scale output is required with an 8-bit resolution. Ensure the system supply voltage remains within the 4.5V to 5.5V range specified for the H-grade variant. Consider the mid-scale power-on reset behavior if downstream circuits are sensitive to initial DAC states during system startup.

Part Context

This component belongs to the LTC2640 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The 'H' suffix denotes the automotive temperature grade (-40°C to 125°C), while 'L' denotes the commercial/industrial grade (2.7V to 5.5V supply). The 'M' suffix specifies the mid-scale power-on reset function, contrasting with the 'Z' suffix which resets to zero-scale.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.