LTC2635HMSE-LMO12#TRPBF

Overview

The LTC2635HMSE-LMO12#TRPBF is a quad 12-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 occurs via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. A key feature is the power-on reset configuration that sets outputs to high impedance upon startup.

Feature Summary

• Quad 12-bit resolution with maximum INL error of ±2.5 LSB
• Integrated 4.096V full-scale reference with 10ppm/°C drift
• Power-on reset to high-impedance state for safe startup
• Ultralow crosstalk between DACs at 3nV•s

Applications

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

Procurement Notes

Verify the specific ordering suffix LMO12 corresponds to the high-impedance power-on reset option and 12-bit resolution. Confirm the MSE package designation matches the 10-lead MSOP form factor required for the design. Ensure the H-grade specification aligns with the 4.5V minimum supply voltage requirement for the internal 4.096V reference operation.

Selection Notes

Select this component when a quad-channel DAC with automotive temperature rating is required. The H-grade variant necessitates a supply voltage between 4.5V and 5.5V to support the 4.096V full-scale output. The LMO suffix is critical if system safety requires DAC outputs to enter a high-impedance state immediately after power-up rather than resetting to zero or mid-scale.

Part Context

This part belongs to the LTC2635 family of quad DACs available in 8-, 10-, and 12-bit resolutions. The HMSE designation indicates the Automotive grade (H) and 10-lead MSOP package (MSE). Other variants include the QFN package (UD) and different power-on reset behaviors such as Zero-Scale (Z) or Mid-Scale (MI/MX).

Replacement Considerations

Direct substitutes within the same family include other LTC2635 variants with different resolutions or reset configurations. Cross-family replacements require matching the quad-channel architecture, I²C interface, and automotive temperature range specifications.