LTC2635CUD-LMX10#TRPBF

Overview

The LTC2635CUD-LMX10#TRPBF is a quad 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in a 16-lead 3mm × 3mm QFN 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 utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key specifications include rail-to-rail buffered outputs, guaranteed monotonicity over the –40°C to 125°C range, and a maximum integral nonlinearity error of ±1 LSB. Power-on reset defaults to mid-scale in external reference mode.

Feature Summary

• Quad 10-Bit Resolution: Provides four independent DAC channels with ±1 LSB maximum INL error.
• Integrated Precision Reference: Internal 2.5V full-scale reference with 10ppm/°C temperature coefficient.
• I²C Interface: Communicates via SDA/SCL lines in standard (100kHz) or fast (400kHz) modes.
• Power-On Reset: Configurable to reset to mid-scale in external reference mode upon power-up.

Applications

• Mobile Communications
• Process Control and Industrial Automation
• 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 LMX suffix requirement for mid-scale reset behavior in external reference mode against system startup requirements. Ensure the C-grade commercial temperature range (0°C to 70°C) aligns with the operational environment.

Selection Notes

Select this component when four independent 10-bit voltage outputs are required within a compact 16-pin QFN footprint. The LMX variant is appropriate if mid-scale initialization is preferred during power-up while using an external reference source. For applications requiring zero-scale reset, consider the LZ suffix variants instead.

Part Context

This part belongs to the LTC2635 family of quad DACs, which also includes 8-bit and 12-bit resolution options. The 'C' designation specifies the commercial temperature grade, distinguishing it from the automotive-grade 'H' variant that supports wider operating temperatures and higher supply voltages.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2635CUD-LZ10#TRPBF (zero-scale reset) or LTC2635CUD-LMI10#TRPBF (mid-scale reset with internal reference). Verify that the reset behavior and reference configuration match the target application design.