LTC2631AHTS8-HM12#TRMPBF

Overview

The LTC2631AHTS8-HM12#TRMPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and operates on a 4.5V to 5.5V supply. The device includes a rail-to-rail buffered output guaranteed monotonic over temperature. It utilizes a 2-wire I²C interface supporting standard (100kHz) and fast (400kHz) modes. Key specifications include a maximum integral nonlinearity error of ±1LSB, a settling time of 4.6µs at 5V, and power-on reset to mid-scale. It is housed in an 8-lead TSOT-23 package.

Feature Summary

• Integrated 4.096V precision reference with 10ppm/°C drift
• Bidirectional REF pin for external reference input or internal reference output
• Power-on reset option to mid-scale via REF_SEL pin configuration
• Low noise performance: 670µVP-P (0.1Hz to 200kHz) with internal reference

Applications

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

Procurement Notes

Verify the specific suffix #TRMPBF indicates a 500-piece tape and reel packaging quantity. Confirm the H-grade designation ensures operation within the –40°C to +125°C automotive temperature range. Ensure the HM12 suffix corresponds to the mid-scale reset and 12-bit resolution requirements for the design.

Selection Notes

Select this part when a 4.096V full-scale output is required with an I²C interface. The H-grade is necessary for applications operating between –40°C and +125°C. The 'M' suffix mandates a mid-scale power-on reset state. Verify that the system supply voltage remains within the 4.5V to 5.5V range specified for the H-series devices.

Part Context

This component belongs to the LTC2631 family of single-channel DACs. Variants differ by resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and temperature grade (C, I, or H). The A-grade variant offers improved linearity compared to standard grades. The TSOT-23 package allows for compact board designs in space-constrained applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.