LTC2631HTS8-HZ8#TRPBF

Overview

The LTC2631HTS8-HZ8#TRPBF 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. Key specifications include a typical settling time of 4.6µs at ±1LSB for 12-bit resolution equivalents, low power consumption of 200µA at 5V, and guaranteed monotonicity over the operating temperature range of –40°C to 125°C. The part is housed in an 8-lead TSOT-23 package.

Feature Summary

• Integrated 10ppm/°C precision reference with 4.096V full-scale output
• I²C interface with selectable addresses via CA0/CA1 pins
• Power-on reset to zero-scale (HZ suffix)
• Guaranteed monotonic operation from –40°C to 125°C

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems
• Optical networking

Procurement Notes

Verify the specific ordering suffixes against the manufacturer's current documentation to confirm pinout compatibility and electrical tolerances. The #TRPBF suffix indicates a tape and reel packaging format compliant with RoHS standards. Ensure that the supply voltage meets the minimum requirement of 4.5V for the H-grade variant to maintain specified performance parameters.

Selection Notes

Select this component when a high-accuracy, low-drift reference is required in a compact form factor. The H-grade designation ensures operation across the extended automotive temperature range of –40°C to 125°C. The Z suffix configures the power-on reset state to zero-scale, which is critical for applications requiring a known safe initial output state upon system startup.

Part Context

This part belongs to the LTC2631 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The HTS8 designation identifies the H-grade temperature rating and the TSOT-23 package type. Other variants in the family include L-grade parts with 2.5V full-scale outputs and M-grade parts configured for mid-scale power-on reset.

Replacement Considerations

Direct replacements within the same family include other LTC2631 variants differing only in resolution or reset configuration, such as LTC2631HTS8-HZ10#TRPBF for 10-bit resolution. Cross-family replacements require verification of I²C compatibility and voltage levels.