LTC2631AHTS8-LM12#TRPBF

Overview

The LTC2631AHTS8-LM12#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 with a full-scale output of 2.5V and operates on a single 2.7V to 5.5V supply. The device guarantees monotonicity over the –40°C to 125°C temperature range, with a maximum Integral Nonlinearity (INL) error of ±1 LSB. It utilizes a 2-wire I²C-compatible serial interface supporting clock rates up to 400kHz and includes a power-on reset circuit configured to initialize the output to mid-scale.

Feature Summary

• 12-bit resolution with ±1 LSB maximum INL error
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• I²C interface with 400kHz fast mode support
• Power-on reset to mid-scale option
• 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 that the ordering suffix #TRPBF corresponds to the standard 2,500-piece tape and reel packaging format as defined in the manufacturer's documentation. Confirm the H-grade temperature rating (-40°C to 125°C) and LM12 power-on reset configuration match the specific design requirements before procurement.

Selection Notes

Select this part for applications requiring high accuracy (±1 LSB INL) in a compact TSOT-23 footprint. Ensure the system supply voltage supports the 2.7V to 5.5V operating range for the L-series internal reference. Verify that the mid-scale power-on reset behavior aligns with system initialization safety protocols compared to zero-scale alternatives.

Part Context

This component belongs to the LTC2631 family of single-channel DACs. The 'A' designation indicates the highest accuracy grade with ±1 LSB INL, while 'H' specifies the automotive temperature range. The 'LM12' suffix defines the 12-bit resolution and mid-scale power-on reset state. It is distinct from the Z-series which offers nine selectable I²C addresses via CA pins.

Replacement Considerations

Direct replacements within the same package and pinout include other LTC2631 variants such as LTC2631ACTS8-LM12#TRMPBF or LTC2631CTS8-LM12#TRMPBF, noting differences in temperature grade (I vs H) and accuracy (C vs A). Cross-family substitutes require verification of I²C compatibility and reference voltage specifications.