LTC2634HMSE-LMI12#TRPBF

Overview

The LTC2634HMSE-LMI12#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 providing a 4.096V full-scale output, operating from a 4.5V to 5.5V supply. The device includes rail-to-rail output buffers and guarantees monotonicity over the -40°C to 125°C temperature range. Communication occurs via a 50MHz SPI/MICROWIRE compatible 3-wire serial interface. Upon power-up, the outputs reset to mid-scale (2.048V). Key specifications include ±2.5 LSB maximum integral nonlinearity, 4.8µs settling time, and low power consumption of 0.7mA at 5V.

Feature Summary

• Quad 12-bit resolution with integrated 4.096V precision reference
• Rail-to-rail output buffers guaranteed monotonic from -40°C to 125°C
• 50MHz SPI/MICROWIRE compatible 3-wire serial interface
• Power-on reset to mid-scale (2.048V) in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2,500 pieces. Confirm the MSE package designation corresponds to the 10-lead MSOP form factor. Ensure the H grade matches the required -40°C to 125°C automotive temperature range for the target application environment.

Selection Notes

Select this part when four independent 12-bit channels are required with a fixed 4.096V full-scale range. The HMSE variant is appropriate for designs constrained by the 10-lead MSOP footprint. Choose this model over the L-grade if the system supply voltage does not support the lower 2.7V minimum, or if the higher 4.096V output swing is necessary for signal integrity.

Part Context

This component belongs to the LTC2634 family, which offers various combinations of resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and package types (QFN or MSOP). The HMSE-LMI12 specifically denotes the high-temperature grade, MSOP package, mid-scale reset behavior, and 12-bit resolution configuration within this product line.

Replacement Considerations

Direct substitutes within the same family include LTC2634IMSE-HMI12#TRPBF (commercial grade) or LTC2634HUD-HMI12#TRPBF (QFN package). Verify that the replacement maintains the required operating temperature range and package dimensions for the existing PCB layout.