LTC2635HUD-LZ10#PBF

Overview

The LTC2635HUD-LZ10#PBF is a quad 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 4.5V to 5.5V and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 125°C automotive temperature range, and a power-on reset circuit configured to zero-scale.

Feature Summary

• Quad 10-bit DACs with integrated 4.096V precision reference (10ppm/°C)
• Automotive temperature grade (-40°C to 125°C) with guaranteed monotonicity
• I2C-compatible serial interface with selectable internal or external reference
• Power-on reset to zero-scale with ultralow crosstalk (3nV•s)

Applications

• Process control and industrial automation systems
• Portable equipment requiring low power consumption
• Automotive electronic modules
• Power supply margining applications

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free construction. Confirm the H-grade designation matches the required 4.5V to 5.5V supply range and automotive temperature specifications. Ensure the LZ power-on reset configuration aligns with system startup requirements for zero-scale initialization.

Selection Notes

Select this part when a 4.096V full-scale output is required with high accuracy in automotive environments. The H-grade variant necessitates a minimum 4.5V supply, unlike the L-grade which supports 2.7V. Consider the 10-bit resolution and ±1 LSB INL error if higher precision than 8-bit is needed but 12-bit complexity is unnecessary.

Part Context

This component belongs to the LTC2635 family of quad DACs available in 12-, 10-, and 8-bit resolutions. The HUD suffix denotes the 16-pin QFN package, while the H indicates the 4.096V internal reference variant. The LZ suffix specifies the power-on reset behavior to zero-scale in internal reference mode.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation.