LTC2634IMSE-HMX12#TRPBF

Overview

The LTC2634IMSE-HMX12#TRPBF is a quad 12-bit voltage output digital-to-analog converter (DAC) in a 10-lead MSOP package. It features an integrated precision reference with a full-scale output of 4.096V and operates from a 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 85°C temperature range, and a maximum integral nonlinearity error of ±2.5 LSB. Communication occurs via a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz. Power-on reset defaults to mid-scale in external reference mode.

Feature Summary

• Quad 12-bit resolution with 4.096V full-scale output
• Integrated 10ppm/°C precision reference
• Rail-to-rail output buffers with ultralow crosstalk (2.4nV•s)
• SPI/MICROWIRE compatible 3-wire serial interface

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm the IMSE designation corresponds to the 10-lead MSOP package and HMX indicates mid-scale reset in external reference mode. Ensure the supplier provides documentation confirming the Industrial temperature grade (-40°C to 85°C).

Selection Notes

Select this part for applications requiring four independent 12-bit channels with high accuracy and low drift. The H suffix restricts operation to 4.5V–5.5V supplies, unlike the L variant which supports 2.7V. The MX suffix sets the power-on state to mid-scale when using an external reference; choose MI or Z variants if internal reference reset behavior is required.

Part Context

This component belongs to the LTC2634 family, which offers 12-, 10-, and 8-bit resolutions in both 16-lead QFN and 10-lead MSOP packages. The IMSE-HMX12 variant specifically combines the industrial temperature grade, MSOP packaging, external reference reset configuration, and 12-bit resolution within the quad DAC architecture.

Replacement Considerations

Direct substitutes include other LTC2634 variants with matching resolution and package, such as LTC2634IMSE-HMI12#TRPBF (internal reference reset) or LTC2634IMSE-HZ12#TRPBF (zero-scale reset). Cross-model replacements like the LTC2630 series offer single-channel configurations in smaller packages but lack the quad architecture.