LTC2635CMSE-LMI8#PBF

Overview

The LTC2635CMSE-LMI8#PBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. 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 utilizes a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical parameters include a maximum integral nonlinearity error of ±0.5 LSB, a settling time of 3.5µs at 3V, and a supply current of 0.6mA. It incorporates double-buffered data latches and guarantees monotonicity over the commercial temperature range of 0°C to 70°C.

Feature Summary

• Quad 8-bit resolution with rail-to-rail output buffers
• Integrated 2.5V precision reference with 10ppm/°C drift
• I2C-compatible serial interface with selectable slave addresses via CA0-CA2 pins
• Power-on reset to mid-scale in internal reference mode

Applications

• Mobile communications
• Process control and industrial automation
• Portable equipment

Procurement Notes

Verify the package type matches the 10-lead MSOP specification indicated by the 'MSE' suffix in the part number. Confirm that the power-on reset configuration aligns with the 'MI' suffix requirement for resetting to mid-scale in internal reference mode. Ensure the operating environment remains within the commercial temperature limits of 0°C to 70°C.

Selection Notes

Select this component when four independent 8-bit DAC channels are required with low crosstalk and high accuracy. The internal 2.5V reference simplifies design by eliminating external reference components. Choose this part over the H-grade variant if the application requires operation from a 2.7V supply and does not need the wider automotive temperature range or higher 4.096V full-scale output.

Part Context

This part belongs to the LTC2635 family, which includes 12-, 10-, and 8-bit variants. The CMSE designation specifically identifies the commercial temperature grade (C), 10-lead MSOP package (MSE), and the specific power-on reset behavior (MI). Other suffixes like LMX or LZ indicate different reset behaviors or external reference configurations.

Replacement Considerations

Direct replacements within the same family include LTC2635CMSE-LZ8#PBF (reset to zero-scale) or LTC2635CMSE-LMO8#PBF (high-impedance reset). For different resolutions, consider LTC2635CMSE-LMI10#PBF or LTC2635CMSE-LMI12#PBF, ensuring pin compatibility and interface requirements remain unchanged.