LTC2634IMSE-LMI12#TRPBF

Overview

The LTC2634IMSE-LMI12#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 low noise characteristics. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. This specific part number indicates the Industrial temperature grade, MSOP-10 package, and a power-on reset configuration that sets outputs to mid-scale in internal reference mode.

Feature Summary

• Quad 12-bit resolution with ±2.5 LSB maximum Integral Nonlinearity (INL) error
• Integrated 10ppm/°C precision reference providing 2.5V full-scale output
• Rail-to-rail output buffers with ultralow DAC-to-DAC crosstalk (2.4nV•s)
• Power-on reset to mid-scale (1.25V) in internal reference mode

Applications

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

Procurement Notes

Verify the ordering suffix #TRPBF confirms the tape and reel packaging format containing 2,500 units per reel. Confirm the IMSE designation corresponds to the 10-lead MSOP package and the I-grade Industrial temperature rating (-40°C to 85°C). Ensure the LMI12 suffix matches the required 12-bit resolution, 2.5V full-scale, and mid-scale internal reference power-on reset behavior.

Selection Notes

Select this component when four independent 12-bit channels are required with high accuracy and low crosstalk. The 2.5V full-scale range suits applications where the signal swing does not require the 4.096V option. The Industrial temperature grade is necessary for environments exceeding commercial limits but not requiring the Automotive H-grade. Verify that the MSOP-10 package dimensions fit the PCB layout constraints compared to the QFN alternative.

Part Context

This part belongs to the LTC2634 family, which offers variations in resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and power-on reset states. The IMSE variant specifically denotes the Industrial temperature grade and MSOP-10 package. Other family members include the C-grade Commercial parts and the H-grade Automotive qualified versions, as well as QFN package options.

Replacement Considerations

Direct pin-compatible replacements within the same package include other LTC2634 variants such as LTC2634IMSE-LMX12#TRPBF (external reference reset) or LTC2634IMSE-LZ12#TRPBF (zero-scale reset). For different resolutions, LTC2634IMSE-LMI10#TRPBF or LTC2634IMSE-LMI8#TRPBF may be used if bit depth adjustments are acceptable.