LTC2631HTS8-LZ12#TRPBF

Overview

The LTC2631HTS8-LZ12#TRPBF is a single 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc., housed in an 8-lead TSOT-23 package. It features an integrated precision reference providing a full-scale output of 4.096V, requiring a supply voltage range of 4.5V to 5.5V. The device utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical characteristics include a maximum Integral Nonlinearity (INL) error of ±2.5 LSB, a typical settling time of 4.6µs at ±1LSB, and a power-on reset function that clears the output to zero-scale upon power-up.

Feature Summary

• Integrated 10ppm/°C precision reference with 4.096V full-scale output
• 12-bit resolution with guaranteed monotonicity over temperature
• I²C interface with selectable addresses via CA0/CA1 pins
• Power-on reset to zero-scale for consistent system initialization

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates a 2,500-piece tape and reel packaging configuration. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the LZ12 code aligns with the 12-bit resolution and zero-scale power-on reset requirement. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm current production status and lead-free compliance.

Selection Notes

Select this component when a 4.096V internal reference is required within a 4.5V to 5.5V supply window. The H-grade is necessary for operations extending to 125°C. The LZ variant ensures the DAC output initializes to zero volts upon power-up, which is critical for safety or default-state applications. Verify that the I²C bus speed requirements are met by the 400kHz fast mode capability.

Part Context

This part belongs to the LTC2631 family of single-channel DACs, which also includes 10-bit and 8-bit variants (LTC2631-10, LTC2631-8). The family shares the same TSOT-23 footprint and I²C interface but differs in resolution, linearity specifications, and internal reference voltages (2.5V for L-grade vs. 4.096V for H-grade). The HTS8 package denotes the thin plastic TSOT-23 form factor.

Replacement Considerations

Direct pin-compatible substitutes within the same family include LTC2631HTS8-LM12#TRPBF (mid-scale reset) or LTC2631ITS8-LZ12#TRPBF (industrial temperature grade). For lower resolution needs, LTC2631HTS8-LZ10#TRPBF or LTC2631HTS8-LZ8#TRPBF may be considered if accuracy requirements allow.