LTC2635CUD-LMI10#TRPBF

Overview

The LTC2635CUD-LMI10#TRPBF is a quad 10-bit voltage-output digital-to-analog converter (DAC) featuring an integrated precision reference with a full-scale output of 2.5V. It operates from a single 2.7V to 5.5V supply and utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. The device includes rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 125°C range, and a power-on reset circuit configured to reset outputs to mid-scale in internal reference mode.

Feature Summary

• Quad 10-bit resolution with ±1 LSB maximum INL error
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• Power-on reset to mid-scale in internal reference mode
• Ultralow crosstalk between DACs (3nV•s typical)

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates lead-free construction and tape-and-reel packaging containing 2,500 pieces. Confirm the C temperature grade corresponds to the commercial range of 0°C to 70°C for operational specifications. Ensure the UD package designation matches the required 16-pin QFN footprint on the target PCB layout.

Selection Notes

Select this part when a quad-channel DAC with integrated 2.5V reference is required. The LMI10 suffix specifies 10-bit resolution with mid-scale power-on reset behavior. For applications requiring external references or different reset states, consider alternative suffixes such as LMX10 or LZ10 within the same family.

Part Context

This component belongs to the LTC2635 family of quad DACs available in 8-, 10-, and 12-bit resolutions. The 'L' variant denotes the 2.5V full-scale internal reference option, while 'H' variants provide 4.096V. The 'UD' package is a 16-lead 3mm × 3mm QFN, distinct from the 10-lead MSOP option.

Replacement Considerations

Direct substitutes include other LTC2635 variants with matching resolution and reset configurations, such as LTC2635CUD-LZ10#TRPBF (zero-scale reset) or LTC2635CUD-LMX10#TRPBF (external reference mode). Verify pin compatibility and thermal characteristics when swapping packages.