LTC2635HMSE-HZ8#PBF

Overview

The LTC2635HMSE-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 4.096V and operates on a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers and guarantees monotonicity over the automotive temperature range of –40°C to 125°C. Communication is handled via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. A power-on reset circuit allows configuration for zero-scale, mid-scale, or high-impedance states upon startup.

Feature Summary

• Quad 8-bit DACs with integrated 4.096V precision reference (±10ppm/°C)
• Automotive temperature grade (-40°C to 125°C) with guaranteed monotonicity
• Rail-to-rail output buffers and ultralow crosstalk (3nV•s)
• Configurable power-on reset to zero-scale, mid-scale, or high-impedance

Applications

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

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and MSE denotes the 10-lead MSOP package. Confirm the H-grade designation matches the required -40°C to 125°C operating range. Ensure the Z8 suffix corresponds to the zero-scale power-on reset option and 8-bit resolution as specified in the manufacturer's ordering guide.

Selection Notes

Select this component when a 4.096V full-scale output is required with an internal reference. The H-grade variant is necessary for automotive or wide-temperature industrial environments. The MSOP package is suitable for space-constrained designs compared to the QFN option. Verify that the I²C address configuration pins (CA0-CA2) can be set appropriately for the system topology.

Part Context

This part belongs to the LTC2635 family of quad DACs, which also includes 10-bit and 12-bit resolutions. The family shares common architecture but differs in linearity specifications and supply voltage requirements based on the L (2.5V FS) or H (4.096V FS) grades. The HMSE-HZ8#PBF specifically combines the high-voltage reference, automotive grade, and small outline package.

Replacement Considerations

Direct pin-compatible replacements within the same family include other LTC2635 variants with different resolutions (e.g., LTC2635HMSE-HZ10#PBF for 10-bit). Cross-family replacements require verification of I²C compatibility, supply voltage ranges, and package dimensions.