LTC2633CTS8-HI8#TRMPBF

Overview

The LTC2633CTS8-HI8#TRMPBF is a dual 8-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 4.096V 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 specifications include a maximum integral nonlinearity (INL) error of ±2.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the –40°C to 125°C temperature range. Power-on reset is configured to mid-scale in internal reference mode.

Feature Summary

• Dual 8-bit DACs with integrated 4.096V precision reference (±10ppm/°C drift)
• I²C interface with standard (100kHz) and fast (400kHz) clock rates
• Rail-to-rail output buffers with ±2.5 LSB maximum INL error
• Power-on reset to mid-scale in internal reference mode
• Operates from 4.5V to 5.5V supply voltage

Applications

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

Procurement Notes

Verify the #TRMPBF suffix indicates a 500-piece tape and reel packaging configuration. Confirm the HI designation corresponds to the 4.096V full-scale internal reference and mid-scale power-on reset behavior. Ensure the C grade meets commercial temperature requirements if applicable, though the datasheet lists H grade for –40°C to 125°C coverage.

Selection Notes

Select this part when dual low-resolution channels are required in a compact TSOT-23 footprint. The 4.096V full-scale output necessitates a minimum 4.5V supply voltage. Verify that the mid-scale power-on reset state aligns with system startup safety requirements. For applications requiring zero-scale or high-impedance power-on states, alternative suffix codes such as Z or O must be selected.

Part Context

This component belongs to the LTC2633 family of dual DACs, which also includes 10-bit and 12-bit variants. The specific model combines the H-grade temperature range with the 8-bit resolution and 4.096V reference configuration. It shares the same pinout and I²C protocol as other members of the series, allowing for design flexibility across different accuracy and voltage requirements within the same package type.

Replacement Considerations

Direct substitutes within the same package and functionality include other LTC2633 variants with different resolutions or reset configurations, such as LTC2633CTS8-HI12#TRMPBF for 12-bit resolution. Cross-family replacements require verification of pin compatibility and I²C address settings.