LTC2631AHTS8-LM12#TRMPBF

Overview

The LTC2631AHTS8-LM12#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 2.5V and operates on a single supply voltage ranging from 2.7V to 5.5V. The device utilizes a 2-wire I²C-compatible serial interface supporting clock rates up to 400kHz. Key electrical specifications include a maximum Integral Nonlinearity (INL) error of ±1 LSB and a typical settling time of 4.1µs at 12-bit resolution. It incorporates a power-on reset circuit configured to initialize the output to mid-scale upon power-up.

Feature Summary

• 12-bit resolution with ±1 LSB maximum INL error
• Integrated 2.5V full-scale reference with 10ppm/°C temperature coefficient
• I²C interface with 400kHz fast mode support
• Power-on reset to mid-scale option

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 configuration as defined in the manufacturer's ordering information. Confirm that the H-grade designation aligns with the required automotive temperature range of –40°C to 125°C for the intended application environment.

Selection Notes

Select this part when a 12-bit DAC with high accuracy (±1 LSB INL) and a 2.5V internal reference is required in a compact TSOT-23 package. Ensure the system supply voltage remains within the 2.7V to 5.5V range. Choose this variant over the Z-suffix if a mid-scale initialization state is preferred after power cycling rather than zero-scale.

Part Context

This component belongs to the LTC2631 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The 'A' grade denotes enhanced linearity performance compared to standard grades. The 'H' suffix specifies the automotive temperature grade, while 'LM' indicates the mid-scale power-on reset configuration and 2.5V full-scale output.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. For pin-compatible alternatives within the same family, consider the LTC2631CTS8-LM12#TRMPBF or LTC2631AHTS8-LZ12#TRMPBF, noting differences in temperature grade and power-on reset behavior.