LTC2635CMSE-HZ8#PBF

Overview

The LTC2635CMSE-HZ8#PBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in a 10-lead MSOP 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 includes rail-to-rail output buffers and guarantees monotonicity over the commercial temperature range of 0°C to 70°C. Communication is handled via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. A power-on reset circuit defaults outputs to zero-scale.

Feature Summary

• Quad 8-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• Rail-to-rail output buffers with guaranteed monotonicity
• I2C-compatible serial interface with selectable slave addresses
• Power-on reset to zero-scale or high-impedance state

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable equipment requiring low power consumption

Procurement Notes

Verify the specific ordering suffix #PBF confirms lead-free construction. Confirm the MSE package designation matches the required 10-lead MSOP footprint. Ensure the C-grade temperature rating (0°C to 70°C) aligns with the target application environment rather than the automotive H-grade (-40°C to 125°C).

Selection Notes

Select this part for applications requiring four independent 8-bit channels with a fixed 2.5V internal reference. The 8-bit resolution limits precision compared to 10- or 12-bit variants but reduces data throughput requirements. Verify that the 2.7V minimum supply voltage meets system constraints, as the H-grade variant requires a higher minimum voltage.

Part Context

This component belongs to the LTC2635 family, which offers 8-, 10-, and 12-bit resolutions. The 'L' suffix indicates the 2.5V full-scale internal reference, while 'H' denotes 4.096V. The 'MSE' suffix specifies the 10-lead MSOP package, distinct from the 16-pin QFN option. The 'HZ' configuration sets the power-on reset behavior to zero-scale.

Replacement Considerations

Direct substitutes within the same family include LTC2635CMSE-LZ8#PBF (different reset behavior) or LTC2635CMSE-HZ8#PBF (higher supply voltage requirement). Cross-family replacements require verifying pin compatibility and I2C address configurations.