LTC2631ITS8-HZ8#TRMPBF

Overview

The LTC2631ITS8-HZ8#TRMPBF is a single-channel, 8-bit voltage-output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It features an integrated precision reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 4.096V. The device operates within a supply voltage range of 4.5V to 5.5V and utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It incorporates a power-on reset circuit configured to clear the output to zero-scale upon initialization. The component is housed in an 8-lead TSOT-23 package and is guaranteed monotonic over the operating temperature range of –40°C to 125°C.

Feature Summary

• Integrated 10ppm/°C precision reference yielding a 4.096V full-scale output
• I²C serial interface with selectable addresses and 400kHz clock rate capability
• Power-on reset function defaults output to zero-scale
• Rail-to-rail buffered output guaranteed monotonic from –40°C to 125°C

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Automotive instrumentation
• Optical networking devices

Procurement Notes

Verify that the specific suffix #TRMPBF corresponds to the 500-unit tape and reel packaging configuration as defined in the manufacturer's ordering information. Confirm the H-grade temperature rating (-40°C to 125°C) matches the application requirements. Ensure the 4.5V minimum supply voltage constraint is compatible with the system power design.

Selection Notes

Select this part for applications requiring a compact 8-bit DAC with high accuracy and low drift. The H-grade variant is necessary for automotive or wide-temperature environments. The internal 4.096V reference simplifies design by eliminating external reference components, though the 4.5V minimum supply voltage must be accommodated in the power architecture.

Part Context

This component belongs to the LTC2631 family of single-channel DACs, which also includes 10-bit and 12-bit variants (LTC2631-10, LTC2631-12). The family shares identical pinouts and interface protocols but differs in resolution, linearity specifications, and full-scale voltage options determined by the L (2.5V) or H (4.096V) suffixes.

Replacement Considerations

Direct pin-compatible replacements within the same family include other resolutions such as LTC2631ITS8-HZ10 or LTC2631ITS8-HZ12. Cross-family replacements require verification of I²C compatibility and supply voltage ranges.