LTC2633CTS8-LO8#TRPBF

Overview

The LTC2633CTS8-LO8#TRPBF 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 2.5V and operates on a single 2.7V to 5.5V supply. The device includes rail-to-rail output buffers and guarantees monotonicity over the commercial temperature range of 0°C to 70°C. Communication is handled via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. A key characteristic is its power-on reset configuration, which sets outputs to high impedance upon initialization.

Feature Summary

• Dual 8-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• Power-on reset to High Impedance state for safe system startup
• Rail-to-rail output buffers with guaranteed monotonic operation
• I²C interface compatible with standard and fast mode clock rates

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates a tape and reel packaging format containing 2,500 pieces. Confirm the 'C' grade designation aligns with the required commercial operating temperature range of 0°C to 70°C. Ensure the LO8 code corresponds to the 8-bit resolution and high-impedance power-on reset option specified in the manufacturer's selection guide.

Selection Notes

Select this part when a compact dual-channel solution with minimal external components is required. The 8-bit resolution suits applications where moderate accuracy is sufficient. The high-impedance power-on reset feature is critical if downstream circuitry must remain inactive during microcontroller initialization. Verify that the 2.5V internal reference span meets the system voltage requirements without needing external scaling.

Part Context

This component belongs to the LTC2633 family of dual DACs, which offers various combinations of resolution (8, 10, or 12 bits), power-on reset behaviors, and full-scale voltages (2.5V or 4.096V). The CTS8-LO8 variant specifically targets cost-sensitive commercial applications requiring a small footprint and safe power-up states. It shares the same pinout and interface logic as other members of the series, facilitating design flexibility across different accuracy and voltage needs.

Replacement Considerations

Direct replacements within the same family include LTC2633CTS8-LZ8#TRPBF (zero-scale reset) or LTC2633CTS8-LI8#TRPBF (mid-scale reset). For higher accuracy, consider the LTC2633A series variants. Ensure any substitute maintains the 8-lead TSOT-23 package and I²C compatibility.