LTC2635CMSE-LMI12#PBF

Overview

The LTC2635CMSE-LMI12#PBF 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 yielding a 2.5V full-scale output with a temperature coefficient of 10ppm/°C. The device operates on a single 2.7V to 5.5V supply and includes rail-to-rail output buffers guaranteed monotonic 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 mid-scale.

Feature Summary

• Quad 12-bit resolution with maximum integral nonlinearity error of ±2.5 LSB
• Integrated 2.5V precision reference with 10ppm/°C drift
• Rail-to-rail output buffers with ultralow crosstalk (3nV•s)
• Power-on reset configured for mid-scale output in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix LMI12 confirms the 12-bit resolution, mid-scale power-on reset behavior, and 2.5V internal reference configuration. Ensure the MSE package designation matches the required 10-lead MSOP footprint. Confirm the C grade corresponds to the 0°C to 70°C operating temperature range for the target application environment.

Selection Notes

Select this component when four independent 12-bit DAC channels are required in a compact surface-mount package. The internal 2.5V reference eliminates external reference components, simplifying board space. Verify that the 2.7V minimum supply voltage aligns with the system power rails. For applications requiring higher voltage swings, consider the H-grade variant which supports a 4.096V full-scale output.

Part Context

This part belongs to the LTC2635 family of quad DACs available in 8-, 10-, and 12-bit resolutions. The CMSE prefix indicates the commercial temperature grade and MSOP package. Other variants include the UD package (16-pin QFN) and H-grade parts for automotive/high-temperature environments. The family shares identical pinouts and register maps across resolutions.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2635CMSE-LMX12#PBF (external reference reset) or LTC2635CMSE-LZ12#PBF (zero-scale reset). Higher resolution options like the LTC2636 series require different interfaces. Lower resolution versions (LTC2635CMSE-LMI10/LMI8) offer improved linearity specifications.