LTC2633CTS8-LO12#TRMPBF

Overview

The LTC2633CTS8-LO12#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 2.5V full-scale output 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) of ±2.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the commercial temperature range of 0°C to 70°C. This specific variant includes a power-on reset function that sets DAC outputs to a high-impedance state upon initialization.

Feature Summary

• Dual 12-bit resolution with integrated 2.5V precision reference (10ppm/°C drift)
• I²C interface with selectable standard (100kHz) and fast (400kHz) clock rates
• Power-on reset to High-Impedance state for safe system initialization
• Rail-to-rail output buffers with guaranteed monotonic operation

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable equipment requiring low power consumption
• Automotive electronic modules

Procurement Notes

Verify the #TRMPBF suffix indicates a 500-unit tape and reel packaging configuration, distinct from the standard 2,500-unit reel. Confirm the C-grade designation aligns with the required 0°C to 70°C operating temperature range for the target application environment.

Selection Notes

Select this part when a dual-channel DAC with a 2.5V internal reference and high-impedance power-on reset is required. Ensure the system supply voltage remains within the 2.7V to 5.5V range. For applications needing a 4.096V full-scale output or automotive temperature ratings (-40°C to 125°C), consider the H-grade variants instead.

Part Context

This component belongs to the LTC2633 family of dual DACs, which also includes 10-bit and 8-bit resolutions. The LO12 suffix specifically denotes the 12-bit resolution combined with the High-Impedance power-on reset option. Other options in the family include mid-scale or zero-scale resets and external reference configurations.

Replacement Considerations

Direct pin-compatible replacements within the same package and functionality include other LTC2633 variants such as LTC2633CTS8-LZ12#TRMPBF (Zero-Scale reset) or LTC2633CTS8-LI12#TRMPBF (Mid-Scale reset). Verify that the specific power-on reset behavior matches the system requirements before substitution.