LTC2633AHTS8-LO12#TRMPBF

Overview

The LTC2633AHTS8-LO12#TRMPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) featuring an integrated precision reference with 10ppm/°C drift. It operates from a single 2.7V to 5.5V supply, delivering a full-scale output of 2.5V. 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 ±1.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity across the –40°C to 125°C temperature range. Power-on reset options allow outputs to initialize to high impedance.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V full-scale reference
• Maximum INL error of ±1.5 LSB for high accuracy
• I²C interface with selectable power-on reset states
• Rail-to-rail output buffers in 8-lead TSOT-23 package

Applications

• Mobile communications
• Process control and industrial automation
• Power supply margining
• Portable equipment
• Automotive systems

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-unit tape and reel configuration, distinct from the standard 2500-unit reel. Confirm that the 'H' grade designation aligns with the required automotive temperature range of –40°C to 125°C for the target application environment.

Selection Notes

Select this part when a dual-channel solution with high linearity (±1.5 LSB INL) and low power consumption is required. The LO12 suffix specifies a 12-bit resolution with a high-impedance power-on reset state, suitable for applications where downstream circuits must remain inactive during initialization. Ensure the system supply voltage falls within the 2.7V to 5.5V range compatible with the L-grade internal reference.

Part Context

This component belongs to the LTC2633 family of dual DACs, which offers various combinations of resolution, reset behavior, and full-scale voltages. The 'A' grade denotes improved linearity compared to standard grades, while the 'H' grade ensures operation in harsh thermal environments. The TSOT-23 package provides a compact footprint for space-constrained designs.

Replacement Considerations

Direct replacements within the same family include LTC2633AHTS8-LI12#TRMPBF or LTC2633AHTS8-LZ12#TRMPBF, differing primarily in power-on reset behavior. For quad-channel requirements, consider the LTC2635 series, though pinout and package differences necessitate schematic review.