LTC2631AITS8-LZ12#TRMPBF

Overview

The LTC2631AITS8-LZ12#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 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 standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum Integral Nonlinearity (INL) error of ±1 LSB, a typical settling time of 4.1µs at 12-bit resolution, and a low power consumption of 180µA at 3V. The part incorporates a power-on reset circuit that defaults the output to zero-scale upon initialization.

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 selectable slave addresses via CA0 and CA1 pins
• Power-on reset to zero-scale for consistent system startup

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 complete part number against official Analog Devices documentation to ensure correct configuration. Confirm that the specific suffixes match the required temperature grade, package type, and power-on reset behavior. Cross-reference with authorized distributors to validate current availability and lead times for the tape and reel packaging format.

Selection Notes

Select this component when a single-channel DAC with high DC accuracy and low power consumption is required in a compact TSOT-23 package. Ensure the application supply voltage falls within the 2.7V to 5.5V range. Verify that the I²C address configuration via CA0 and CA1 pins does not conflict with other devices on the bus. Consider the zero-scale power-on reset feature if safe initial output states are critical for the system design.

Part Context

This part belongs to the LTC2631 family of single-channel DACs, which also includes variants with different resolutions (8-bit, 10-bit), full-scale voltages (4.096V), and power-on reset options (mid-scale). The 'A' designation indicates the highest accuracy grade with ±1 LSB INL, while 'I' specifies the industrial temperature range (-40°C to 85°C). The 'TS8' denotes the 8-lead ThinSOT package, and '#TRMPBF' indicates the tape and reel packaging with lead-free finish.

Replacement Considerations

Direct replacements within the same family include LTC2631AITS8-HZ12#TRMPBF for a 4.096V full-scale output or LTC2631AITS8-LM12#TRMPBF for mid-scale power-on reset. Ensure any substitute matches the required operating temperature range and I²C address configuration capabilities.