LTC2634IUD-LZ8#TRPBF

Overview

The LTC2634IUD-LZ8#TRPBF is a quad 8-bit voltage output DAC in a 16-lead QFN package. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates from a single 2.7V to 5.5V supply, drawing 0.6mA at 3V. It includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 85°C industrial range, and a maximum INL error of ±0.5 LSB. Communication occurs via a 50MHz SPI/MICROWIRE compatible interface. Power-on reset defaults to zero-scale.

Feature Summary

• Quad 8-bit resolution with ±0.5 LSB maximum INL
• Integrated 2.5V full-scale reference (10ppm/°C)
• Single supply operation: 2.7V to 5.5V
• Industrial temperature range: -40°C to 85°C

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment

Procurement Notes

Verify the specific suffix #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm the 'I' grade corresponds to the industrial temperature range (-40°C to 85°C) and 'UD' denotes the 16-lead QFN package. Ensure the 'LZ' designation matches the required zero-scale power-on reset behavior for system initialization requirements.

Selection Notes

Select this part for applications requiring four independent 8-bit channels with low cost and moderate accuracy. The internal 2.5V reference simplifies design by eliminating external components. Choose this model if the system requires outputs to default to zero volts upon power-up to protect downstream circuitry during initialization.

Part Context

This component belongs to the LTC2634 family of quad DACs, which also offers 10-bit and 12-bit resolutions. Variants exist with different full-scale voltages (2.5V or 4.096V), power-on reset behaviors (zero-scale or mid-scale), and temperature grades (commercial, industrial, automotive). The 'LZ8' specifically identifies the 8-bit version with zero-scale reset and 2.5V internal reference.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Users should consult Analog Devices directly for specific cross-reference information or alternative product recommendations based on updated availability.