LTC2634IMSE-LMI8#PBF

Overview

The LTC2634IMSE-LMI8#PBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in a 10-lead MSOP package. It features an integrated precision reference providing a 2.5V full-scale output and operates on a single 2.7V to 5.5V supply. The device utilizes a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz. Key specifications include a settling time of 3.3µs, integral nonlinearity of ±0.5 LSB, and a power-on reset function that initializes outputs to mid-scale.

Feature Summary

• Quad 8-bit DAC architecture with rail-to-rail buffered outputs
• Integrated 10ppm/°C precision reference yielding 2.5V full-scale
• SPI/MICROWIRE compatible 3-wire serial interface operating at 50MHz
• Power-on reset configured for mid-scale initialization in internal reference mode

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Mobile communications infrastructure
• Automatic test equipment

Procurement Notes

Verify the specific ordering suffix #PBF confirms lead-free compliance and RoHS standards. Confirm the IMSE designation corresponds to the Industrial temperature range (-40°C to 85°C) and the MSE package type. Ensure the LMI8 suffix matches the required 8-bit resolution and mid-scale power-on reset behavior before procurement.

Selection Notes

Select this component when a quad-channel DAC with moderate 8-bit resolution is required in a compact surface-mount package. The IMSE variant is suitable for industrial environments requiring operation between -40°C and 85°C. Choose this part over higher-resolution models if system cost and pin count are constrained while maintaining low power consumption.

Part Context

This part belongs to the LTC2634 family, which offers configurable resolutions of 12, 10, or 8 bits. The IMSE-LMI8 variant specifically targets applications needing industrial temperature stability and mid-scale power-up states. It shares the same core architecture as the QFN versions but provides a smaller footprint via the MSOP package.

Replacement Considerations

Direct replacements within the family include other LTC2634 variants with different resolutions or reset configurations. For I2C interfaces, consider the LTC2635 series. Verify pin compatibility and thermal performance when substituting packages.