LTC2635CUD-LZ12#TRPBF

Overview

The LTC2635CUD-LZ12#TRPBF is a quad 12-bit voltage-output digital-to-analog converter (DAC) featuring an integrated precision reference with a temperature coefficient of 10ppm/°C. It operates from a single 2.7V to 5.5V supply and provides rail-to-rail buffered outputs. 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 error of ±2.5 LSB, low noise of 0.75mV peak-to-peak (0.1Hz to 200kHz), and guaranteed monotonicity over the commercial temperature range of 0°C to 70°C.

Feature Summary

• Quad 12-bit resolution with integrated 2.5V full-scale precision reference
• Rail-to-rail output buffers with ultralow crosstalk (3nV•s)
• I²C interface with selectable power-on reset to zero-scale
• Low power consumption: 0.6mA at 3V

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates lead-free construction and tape-and-reel packaging containing 2,500 pieces. Confirm the 'L' designation for 2.5V internal reference and 'Z' for zero-scale power-on reset matches system requirements. Ensure the 'C' grade covers the intended operating temperature range of 0°C to 70°C.

Selection Notes

Select this part for applications requiring four independent 12-bit channels with high accuracy and low drift. The 2.5V internal reference simplifies design by eliminating external components. Consider the 16-pin QFN package for space-constrained layouts. Verify that the 2.7V minimum supply voltage aligns with the system's power rails.

Part Context

This component belongs to the LTC2635 family of quad DACs, which also includes 10-bit and 8-bit variants. The 'UD' suffix denotes the 16-pin 3mm × 3mm QFN package. Other options in the family include different reset behaviors (mid-scale or high-impedance) and automotive-grade temperature ranges (H-grade).

Replacement Considerations

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