LTC2634IMSE-LMX12#TRPBF

Overview

The LTC2634IMSE-LMX12#TRPBF is a quad 12-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 includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 85°C temperature range, and communicates via a 50MHz SPI/MICROWIRE compatible 3-wire serial interface. This specific variant resets to mid-scale in external reference mode upon power-up.

Feature Summary

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

Applications

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

Procurement Notes

Verify the package type matches the design requirements, as this part uses a 10-lead MSOP. Confirm that the operating environment stays within the specified industrial temperature range of -40°C to 85°C. Ensure the system power supply remains between 2.7V and 5.5V for proper operation. Check that the application utilizes an external reference voltage to align with the LMX suffix configuration.

Selection Notes

Select this component when four independent 12-bit DAC channels are required in a compact surface-mount package. The IMSE suffix indicates an industrial temperature grade (-40°C to 85°C) and MSOP packaging. Choose the LMX variant if the system requires the outputs to initialize at mid-scale using an external reference voltage during power-up sequences.

Part Context

This part belongs to the LTC2634 family, which offers 12-, 10-, and 8-bit resolutions in both QFN and MSOP packages. The IMSE designation specifies the Industrial temperature grade and 10-lead MSOP form factor. The LMX suffix defines the power-on reset behavior for external reference applications, distinguishing it from internal reference or zero-scale reset variants.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.