LTC2634HMSE-LMI8#TRPBF

Overview

The LTC2634HMSE-LMI8#TRPBF is a quad 8-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 a temperature coefficient of 10ppm/°C. The device operates on a single 2.7V to 5.5V supply and includes rail-to-rail output buffers. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key electrical specifications include a settling time of 3.3µs, maximum integral nonlinearity (INL) of ±0.5 LSB, and differential nonlinearity (DNL) of ±0.5 LSB. The part is housed in a 10-lead MSOP package and is designed for industrial applications within the –40°C to 85°C temperature range.

Feature Summary

• Quad 8-bit DAC architecture with integrated 2.5V precision reference
• Rail-to-rail output buffers ensuring monotonic operation
• 3-wire SPI/MICROWIRE serial interface with 50MHz clock capability
• Power-on reset to mid-scale in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2,500 units. Confirm the MSE package designation corresponds to the 10-lead MSOP form factor. Ensure the H-grade temperature rating aligns with the required operational environment of –40°C to 85°C. Cross-reference the LMI8 configuration for mid-scale power-on reset behavior in internal reference mode.

Selection Notes

Select this component when a compact quad DAC solution with high accuracy is required. The 8-bit resolution offers a balance between cost and performance for applications not requiring 12-bit precision. The integrated reference eliminates the need for external components, reducing board space. Consider the 10-lead MSOP package for designs prioritizing smaller footprints over the 16-lead QFN option.

Part Context

This part belongs to the LTC2634 family, which includes 12-, 10-, and 8-bit variants. The HMSE designation specifies the Automotive/H-grade temperature range, MSOP package, and Mid-scale Internal reset configuration. It shares architectural similarities with the LTC2636 octal DAC but offers fewer channels in a more compact package.

Replacement Considerations

Direct replacements within the same family include LTC2634IMSE-LMI10#TRPBF or LTC2634IMSE-LMI12#TRPBF for higher resolution needs. For automotive qualification, ensure the replacement maintains the AEC-Q100 status if required by the application.