LTC2634CMSE-HMX12#PBF

Overview

The LTC2634CMSE-HMX12#PBF 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 single 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 communicates via a 50MHz SPI/MICROWIRE compatible 3-wire serial interface. Power-on reset defaults to mid-scale in external reference mode.

Feature Summary

• Quad 12-bit resolution with ±2.5 LSB maximum integral nonlinearity error
• Integrated 4.096V full-scale reference with 10ppm/°C drift
• 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 specific ordering suffix HMX indicates power-on reset behavior for external reference mode configurations. Confirm the MSE package designation corresponds to the 10-lead MSOP form factor required for the target PCB layout. Ensure supply voltage sequencing adheres to absolute maximum ratings during power-up.

Selection Notes

Select this part when a 4.096V internal reference is required with mid-scale initialization in external reference modes. The 10-lead MSOP package is suitable for space-constrained designs compared to the 16-lead QFN variant. Verify that the 4.5V minimum supply voltage aligns with system power rails.

Part Context

This component belongs to the LTC2634 family of quad DACs, which offers variations in resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and package types (QFN or MSOP). The CMSE suffix specifically denotes the commercial temperature grade, MSOP package, and external reference mid-scale reset configuration.

Replacement Considerations

Direct substitutes within the same family include LTC2634IMSE-HMX12#PBF for industrial temperature range or LTC2634UD-HMX12#PBF for QFN packaging. Cross-family replacements require verification of pin compatibility and electrical parameter alignment.