LTC2635CMSE-LMO12#TRPBF

Overview

The LTC2635CMSE-LMO12#TRPBF is a quad 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc., 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, guaranteed monotonicity over the –40°C to 125°C temperature range, and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity error of ±2.5 LSB, a settling time of 4.1µs at 3V, and low power consumption of 0.6mA at 3V.

Feature Summary

• Quad 12-bit resolution with integrated 2.5V precision reference (10ppm/°C drift)
• Power-on reset to high-impedance state for LMO suffix variants
• Rail-to-rail buffered outputs with ultralow crosstalk (3nV•s)
• I²C interface with selectable internal or external reference

Applications

• Mobile communications systems
• Process control and industrial automation
• Power supply margining
• Portable equipment
• Automotive applications

Procurement Notes

Verify the specific ordering suffix 'LMO' confirms the power-on reset behavior where DAC outputs enter a high-impedance state upon initialization. Confirm the 'MSE' designation corresponds to the 10-lead MSOP package type required for the design. Ensure the '#TRPBF' suffix indicates tape and reel packaging with lead-free compliance as specified in the manufacturer's documentation.

Selection Notes

Select this component when a quad-channel DAC configuration is required within space-constrained designs utilizing the MSOP footprint. The LMO suffix is critical if system startup safety requires outputs to default to a high-impedance state rather than zero-scale or mid-scale. Verify that the 2.5V internal full-scale range aligns with downstream signal requirements, or consider external reference options if higher voltage spans are necessary.

Part Context

This part belongs to the LTC2635 family, which offers 12-, 10-, and 8-bit resolutions in both QFN and MSOP packages. The CMSE variant specifically denotes the commercial temperature grade (extended to automotive ranges per datasheet notes) and the MSOP package style. Other suffixes like 'L' or 'H' define the internal reference full-scale voltage, while 'MI', 'MX', or 'Z' dictate different power-on reset behaviors.

Replacement Considerations

Direct replacements within the same family include LTC2635CMSE-LMI12#TRPBF or LTC2635CMSE-LZ12#TRPBF, provided the power-on reset behavior (Mid-Scale vs. Zero-Scale) matches the application requirements. Cross-package alternatives such as the 16-pin QFN version (LTC2635CUD-LMO12#TRPBF) require PCB layout modifications.