LTC2633HTS8-LZ12#TRMPBF

Overview

The LTC2633HTS8-LZ12#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 providing a 4.096V full-scale output and operates on a single 4.5V 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) of ±1.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the –40°C to 125°C temperature range. Power-on reset defaults to zero-scale.

Feature Summary

• Dual 12-bit resolution with ±1.5 LSB maximum INL error
• Integrated 4.096V precision reference with 10ppm/°C drift
• Rail-to-rail output buffers with high impedance power-down option
• I²C interface with selectable slave address via CA0 pin

Applications

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

Procurement Notes

Verify the #TRMPBF suffix 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 LZ12 code specifies the 4.096V full-scale voltage and zero-scale power-on reset behavior as documented in the selection guide.

Selection Notes

Select this part for dual-channel applications requiring high accuracy within a compact footprint. The H-grade variant necessitates a minimum supply voltage of 4.5V, unlike the L-grade which supports 2.7V. The LZ power-on reset code ensures outputs start at zero-scale, which is critical for systems sensitive to initial DAC states. Verify I²C bus compatibility with the host microcontroller.

Part Context

This component belongs to the LTC2633 family of dual DACs. The specific suffix HTS8 denotes the H-grade temperature rating and the 8-lead TSOT-23 plastic package. The LZ12 identifier confirms the 12-bit resolution, 4.096V internal reference scale, and zero-scale reset function. It serves as a compact solution for replacing discrete DAC and reference combinations in space-constrained designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.