LTC2633AHTS8-LX12#TRMPBF

Overview

The LTC2633AHTS8-LX12#TRMPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in an 8-lead TSOT-23 package. It features an integrated precision reference with a full-scale output of 2.5V and operates on a single 2.7V to 5.5V supply. The device communicates via 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 over the –40°C to 125°C temperature range. Power-on reset options allow configuration to mid-scale in external reference mode.

Feature Summary

• Dual 12-bit resolution with ±1.5 LSB maximum INL error
• Integrated 2.5V full-scale precision reference (10ppm/°C drift)
• I²C interface with selectable power-on reset to mid-scale
• Rail-to-rail output buffers guaranteed monotonic from –40°C to 125°C

Applications

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

Procurement Notes

Verify the #TRMPBF suffix indicates a 500-unit tape and reel packaging option through designated sales channels. Confirm the LX12 designation corresponds to the specific power-on reset behavior for external reference mode configurations. Ensure compatibility with the required I²C bus voltage levels and pull-up resistor requirements for the target application environment.

Selection Notes

Select this part for applications requiring dual-channel precision DACs in compact packages. The LX12 variant is suitable when mid-scale initialization in external reference mode is required upon power-up. For internal reference operation, consider alternative suffixes such as LI12 or LZ12. Verify that the 2.7V to 5.5V supply range aligns with the system power architecture and that the 400kHz I²C speed meets communication timing constraints.

Part Context

This component belongs to the LTC2633 family of dual DACs, which also includes 10-bit and 8-bit variants. The 'A' grade denotes improved linearity performance compared to standard grades. The TSOT-23 package provides a small footprint suitable for space-constrained designs. Other family members offer different reset behaviors and full-scale voltages, allowing flexibility in system initialization and reference configurations.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Analog Devices for direct replacements or cross-references based on specific pinout and electrical parameter requirements.