LTC2631ITS8-HZ10#TRPBF

Overview

The LTC2631ITS8-HZ10#TRPBF is a single-channel, 10-bit voltage-output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It integrates a precision reference with a temperature coefficient of 10ppm/°C and operates within an industrial temperature range of –40°C to 85°C. The device features a rail-to-rail output buffer and supports I²C interfaces at standard (100kHz) and fast (400kHz) modes. It utilizes a power-on reset mechanism that defaults the output to zero-scale upon initialization. The component is housed in an 8-lead TSOT-23 package and requires a supply voltage between 2.7V and 5.5V.

Feature Summary

• 10-bit resolution with guaranteed monotonicity over the full operating temperature range
• Integrated 10ppm/°C precision reference providing a 2.5V full-scale output
• Bidirectional REF pin allows for internal reference output or external reference input
• Power-on reset circuit configured to drive the DAC output to zero-scale

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronic modules

Procurement Notes

Verify the specific suffix 'ITS8' corresponds to the Industrial temperature grade (-40°C to 85°C), 8-lead TSOT-23 package, and Zero-scale Power-On Reset configuration as defined in the official Analog Devices part numbering system. Confirm the '#TRPBF' designation indicates lead-free construction and tape-and-reel packaging containing 2,500 units before finalizing procurement orders.

Selection Notes

Select this model when an industrial temperature rating is required alongside a 10-bit resolution and zero-scale startup state. The 2.5V full-scale output is suitable for low-voltage signal chains. Ensure the application supports the 2.7V to 5.5V supply range. For higher accuracy requirements, consider the 'A' grade variant which offers tighter Integral Nonlinearity specifications compared to the standard grade.

Part Context

This component belongs to the LTC2631 family of single-channel I²C DACs. The family includes variants with 8-, 10-, and 12-bit resolutions, different full-scale voltages (2.5V or 4.096V), and various temperature grades (Commercial, Industrial, Automotive). The 'LTC2631I' prefix specifically denotes the Industrial temperature extension, distinguishing it from Commercial ('C') or Automotive/H-grade ('H') counterparts.

Replacement Considerations

Direct replacements must match the 10-bit resolution, I²C interface, and 8-lead TSOT-23 package. Verify that substitute parts support the same 2.5V full-scale output and zero-scale power-on reset behavior. Cross-reference with other members of the LTC2631 series, such as the 12-bit LTC2631ITS8-HZ12, if resolution adjustments are permissible.