LTC2631AHTS8-LZ12#TRMPBF

Overview

The LTC2631AHTS8-LZ12#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 output buffer 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 (INL) error of ±1LSB, a settling time of 4.6µs at ±1LSB, and a power-on reset function that clears the output to zero-scale upon power-up.

Feature Summary

• 12-bit resolution with ±1LSB maximum INL error
• Integrated 4.096V reference with 10ppm/°C drift
• I²C interface with selectable slave addresses via CA0/CA1 pins
• Power-on reset to zero-scale for consistent initialization

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging configuration as defined in the manufacturer's documentation. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the LZ12 suffix correctly identifies the zero-scale reset option and 12-bit resolution before procurement.

Selection Notes

Select this component when a 4.096V full-scale output is required with high accuracy. The H-grade is necessary for applications operating between –40°C and 125°C. The LZ suffix ensures the DAC initializes to zero-scale upon power-up, which is critical for safety or specific system states. Verify that the supply voltage remains within the 4.5V to 5.5V range for specified performance.

Part Context

This part belongs to the LTC2631 family of single-channel DACs. The 'A' denotes the electrical grade with ±1LSB max INL. The 'H' specifies the extended temperature range. The 'Z' indicates the power-on reset behavior is set to zero-scale. The 'TS8' package is an 8-lead TSOT-23. This specific variant combines the high-accuracy grade with the automotive temperature range and zero-reset feature.

Replacement Considerations

Direct replacements within the same family include LTC2631AHM12#TRMPBF if mid-scale reset is acceptable, or LTC2631AHTS8-HZ12#TRMPBF if the specific 500-unit reel packaging differs. For single-channel alternatives with similar specs, consider the LTC2632 series, though pinouts and interfaces may vary.