LTC2637HMS-HMX10#TRPBF

Overview

The LTC2637HMS-HMX10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a high-accuracy internal reference with a 10ppm/°C temperature coefficient, providing a full-scale output of 4.096V. The device operates on a single 4.5V to 5.5V supply and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It incorporates double-buffered data latches, ultralow crosstalk between DACs (<3nV•s), and a power-on reset circuit configured to reset to mid-scale in external reference mode. The component is housed in a 16-lead MSOP package.

Feature Summary

• Octal 10-bit resolution with rail-to-rail output buffers guaranteed monotonic over –40°C to 125°C
• Integrated precision reference yielding 4.096V full-scale output with ±10ppm/°C drift
• Ultralow DAC-to-DAC crosstalk specification of less than 3nV•s
• Power-on reset function configurable for mid-scale initialization in external reference mode

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking infrastructure

Procurement Notes

Verify the specific suffix HMX10#TRPBF against the manufacturer's current ordering guide to confirm the tape and reel quantity and lead finish specifications. Ensure the design supports the required 4.5V to 5.5V supply range and I2C bus timing constraints for fast mode operation before finalizing procurement.

Selection Notes

Select this part when eight independent voltage outputs are required within a compact footprint. The H-grade variant is necessary for automotive or extended temperature applications up to 125°C. Choose the HMX suffix if the system requires the DAC outputs to initialize at mid-scale upon power-up when using an external reference voltage source.

Part Context

This component belongs to the LTC2637 family, which includes 8-bit, 10-bit, and 12-bit variants. The 'H' designation indicates the automotive temperature grade (-40°C to 125°C) and 4.096V internal reference capability. The 'MS' suffix specifies the 16-lead MSOP package, while 'HMX' defines the power-on reset behavior for external reference configurations.

Replacement Considerations

Direct pin-compatible substitutes within the same family include LTC2637HMS-HMI10#TRPBF (mid-scale reset in internal mode) and LTC2637HMS-HZ10#TRPBF (zero-scale reset). For different resolutions, consider LTC2637HMS-HMX8#TRPBF or LTC2637HMS-HMX12#TRPBF, ensuring linearity and settling time requirements are met.