LTC2631CTS8-HM12#TRMPBF

Overview

The LTC2631CTS8-HM12#TRMPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) manufactured by 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 for the H-grade variant. It is housed in an 8-lead TSOT-23 package.

Feature Summary

• Integrated 4.096V precision reference with 10ppm/°C temperature coefficient
• 12-bit resolution with guaranteed monotonicity over temperature
• I²C interface supporting standard (100kHz) and fast (400kHz) modes
• Power-on reset function configured to mid-scale output

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify the specific suffix #TRMPBF indicates a 500-unit tape and reel packaging configuration. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the HM12 suffix correctly specifies the mid-scale power-on reset option and 12-bit resolution. Cross-reference the manufacturer's ordering information for lead-free compliance status.

Selection Notes

Select this component when a 4.096V full-scale output is required with a minimum supply voltage of 4.5V. The H-grade temperature rating is necessary for applications operating between –40°C and 125°C. Choose the M-suffix if a mid-scale output state is preferred upon power-up rather than zero-scale. Verify that the I²C address pins CA0 and CA1 are configured correctly for the system bus topology.

Part Context

This part belongs to the LTC2631 family of single-channel DACs. It shares architectural similarities with the LTC2633 (dual), LTC2635 (quad), and LTC2637 (octal) variants. The primary distinctions lie in the channel count, pin configurations for address selection, and specific power-on reset behaviors defined by the ordering suffixes.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate other members of the LTC2631 family or comparable I²C DACs from Analog Devices based on channel count and package compatibility requirements.