LTC2634CMSE-LMI12#PBF

Overview

The LTC2634CMSE-LMI12#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 providing a 2.5V full-scale output with a temperature coefficient of 10ppm/°C. The device operates from 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 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Power-on reset defaults to mid-scale in internal reference mode.

Feature Summary

• Quad 12-bit resolution with ±2.5 LSB maximum integral nonlinearity error
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• Rail-to-rail output buffers with ultralow crosstalk (2.4nV•s)
• Power-on reset to mid-scale in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the MSE package designation corresponds to the 10-lead MSOP form factor required for the design. Ensure the LMI12 suffix matches the intended 2.5V full-scale, mid-scale reset, and 12-bit resolution configuration before procurement.

Selection Notes

Select this part when a quad DAC configuration with high accuracy is required in a compact surface-mount package. The 2.5V internal reference suits applications where a precise low-voltage swing is needed without external components. Verify that the 0°C to 70°C commercial temperature range meets the environmental requirements, as industrial and automotive grades are available in other variants.

Part Context

This component belongs to the LTC2634 family of quad DACs, which also offers 8-bit and 10-bit resolutions. Variants exist in 16-lead QFN packages and include options for 4.096V full-scale outputs or different power-on reset behaviors. The CMSE-LMI12 specifically denotes the commercial grade, MSOP package, mid-scale internal reset, and 12-bit resolution.

Replacement Considerations

Direct replacements within the same family include LTC2634IMSE-LMI12#PBF for industrial temperature range (-40°C to 85°C) or LTC2634HSE-LMI12#PBF for automotive range (-40°C to 125°C). Other resolutions like LTC2634CMSE-LMX12#PBF offer external reference modes but maintain the same pinout and package.