LTC2631AITS8-HM12#TRMPBF

Overview

The LTC2631AITS8-HM12#TRMPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference with a full-scale output of 4.096V and operates within a supply voltage range of 4.5V 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, a typical settling time of 4.6µs at ±1LSB accuracy, and a power-down current of 4µA maximum. It is housed in an 8-lead TSOT-23 package and is rated for operation across an extended temperature range of –40°C to 125°C.

Feature Summary

• Integrated 4.096V precision reference with 10ppm/°C drift
• Maximum INL error of ±1 LSB for high DC accuracy
• I²C interface with fast mode support up to 400kHz
• Power-on reset to mid-scale option (suffix M)
• Extended temperature grade (-40°C to 125°C)

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Automotive electronic modules
• Optical networking transceivers

Procurement Notes

Verify the specific ordering suffixes against the manufacturer's datasheet to confirm pinout compatibility and functional parameters. The #TRMPBF suffix indicates a 500-unit tape and reel packaging format. Ensure that the system power supply remains within the 4.5V to 5.5V range required for the H-grade variant to maintain specified performance levels.

Selection Notes

Select this component when a 12-bit resolution with ±1 LSB linearity is required in a compact TSOT-23 footprint. The H-grade designation ensures operation up to 125°C, suitable for automotive or harsh industrial environments. Confirm that the 4.5V minimum supply voltage aligns with the system design, as lower voltages may not support the 4.096V full-scale output.

Part Context

This part 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 power-on reset behavior (zero or mid-scale). The 'A' grade denotes tighter linearity specifications compared to standard grades, while the 'H' temperature grade extends the operational range beyond commercial and industrial limits.

Replacement Considerations

Direct replacements within the same family include LTC2631AITS8-LM12#TRMPBF for 2.5V applications or LTC2631AITS8-HZ12#TRMPBF if zero-scale reset is preferred. Verify that any substitute maintains the 4.5V–5.5V supply requirement and the 125°C temperature rating.