LTC2634IUD-HZ12#TRPBF

Overview

The LTC2634IUD-HZ12#TRPBF is a quad 12-bit voltage output digital-to-analog converter (DAC) in a 16-lead QFN package. It features an integrated precision reference providing a 4.096V full-scale output, operating from a single 4.5V to 5.5V supply. The device utilizes a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz. Key specifications include a maximum integral nonlinearity error of ±2.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the industrial temperature range of –40°C to 85°C. Upon power-up, the outputs reset to zero-scale.

Feature Summary

• Quad 12-bit resolution with integrated 4.096V precision reference
• Industrial temperature grade (–40°C to 85°C) in 16-lead QFN package
• Power-on reset to zero-scale for consistent system initialization
• SPI/MICROWIRE compatible 3-wire serial interface with 50MHz clock rate

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Automatic test equipment
• Mobile communications infrastructure

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2,500 pieces. Confirm the I-grade designation matches the required –40°C to 85°C operating temperature range for the application environment. Ensure the H-full-scale variant aligns with the 4.5V minimum supply requirement.

Selection Notes

Select this part when a quad DAC configuration with high accuracy (±2.5 LSB INL) and low drift (10ppm/°C) is required. The H-version necessitates a supply voltage between 4.5V and 5.5V; use the L-version if a 2.7V to 5.5V supply range or 2.5V full-scale output is preferred. The Z-suffix ensures outputs start at zero upon power-up.

Part Context

This component belongs to the LTC2634 family of quad rail-to-rail DACs. The IUD suffix identifies the Industrial temperature grade and 16-lead QFN package. The H designation specifies the 4.096V internal reference full-scale, while Z indicates the zero-scale power-on reset behavior. The TRPBF suffix denotes lead-free tape and reel packaging.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2634IUD-LZ12#TRPBF (2.5V full-scale) or LTC2634IUD-HMI12#TRPBF (mid-scale reset). Verify that the alternative variant's full-scale voltage and reset state meet the specific circuit requirements.