LTC2635CMSE-LMO12#PBF

Overview

The LTC2635CMSE-LMO12#PBF is a quad 12-bit voltage-output digital-to-analog converter (DAC) in a 10-lead MSOP package. It features an integrated precision reference with a full-scale output of 2.5V and operates from 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 range, and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It incorporates a power-on reset circuit configured for mid-scale reset with DAC outputs in a high-impedance state.

Feature Summary

• Quad 12-bit resolution with maximum INL error of ±2.5 LSB
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• Power-on reset to mid-scale with high-impedance outputs
• Ultralow crosstalk between DACs (3nV•s)

Applications

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

Procurement Notes

Verify the specific ordering suffix LMO12 corresponds to the mid-scale reset with high-impedance output configuration. Confirm the MSE package designation matches the 10-lead MSOP form factor required for the design. Ensure the C temperature grade meets the operational requirements, noting that H-grade parts are available for automotive applications.

Selection Notes

Select this part when a quad-channel DAC with integrated reference is needed in a small footprint. The LMO option is suitable for systems requiring outputs to enter a high-impedance state upon power-up while resetting to mid-scale. Verify that the 2.7V to 5.5V supply range aligns with the system power rails and that I²C bus speeds do not exceed 400kHz.

Part Context

This component belongs to the LTC2635 family of quad DACs, which also includes 10-bit and 8-bit variants. The CMSE designation indicates the commercial temperature grade and MSOP package. Other suffixes like LZ or MI define different power-on reset behaviors, such as zero-scale or mid-scale without high-impedance outputs.

Replacement Considerations

Direct substitutes within the same family include LTC2635CMSE-LMI12#PBF (mid-scale reset) and LTC2635CMSE-LZ12#PBF (zero-scale reset). For higher resolution needs, consider the LTC2636 series, though pinouts and interfaces may differ.