LTC2634HMSE-LMI10#TRPBF

Overview

The LTC2634HMSE-LMI10#TRPBF is a quad 10-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 single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 125°C temperature range, and communicates via a 50MHz SPI/MICROWIRE compatible 3-wire serial interface. Power-on reset defaults to mid-scale in internal reference mode.

Feature Summary

• Quad 10-bit DACs with integrated 4.096V precision reference
• Rail-to-rail output buffers with ultralow crosstalk (2.4nV•s)
• SPI/MICROWIRE compatible 3-wire serial interface up to 50MHz
• Power-on reset to mid-scale in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2,500 pieces. Confirm the H-grade designation corresponds to the automotive temperature range (-40°C to 125°C). Ensure the MI suffix matches the required power-on reset behavior for mid-scale initialization in internal reference mode.

Selection Notes

Select this part when a quad 10-bit resolution is required with a fixed 4.096V full-scale output. The H-grade is necessary for operation up to 125°C. The MSOP package is suitable for space-constrained designs requiring surface mount technology. Verify that the 4.5V minimum supply voltage aligns with the system power rails.

Part Context

This component belongs to the LTC2634 family, which offers 8-, 10-, and 12-bit resolutions in both QFN and MSOP packages. The HMSE variant specifically denotes the 10-lead MSOP package with H-grade temperature rating and MSE manufacturing code. Other variants include L-grade for 2.7V-5.5V operation and different reset configurations.

Replacement Considerations

LTC2634IMSE-HMI10#PBF: Same electrical specifications and package but in tube packaging instead of tape and reel.

FAQ

What is the default output state upon power-up?

The LTC2634HMSE-LMI10#TRPBF powers on to mid-scale in internal reference mode, resulting in an output voltage of approximately 2.048V.

Can the full-scale output be changed using an external reference?

No, the 'H' suffix indicates an internal reference configuration with a fixed full-scale output of 4.096V. External reference modes are available in other variants like the LTC2634-HMX10.

Is the device guaranteed to be monotonic?

Yes, the LTC2634 is guaranteed monotonic over the entire operating temperature range of -40°C to 125°C.