LTC2637CDE-HZ8#TRPBF

Overview

The LTC2637CDE-HZ8#TRPBF is an octal, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a high-accuracy internal reference with a 10ppm/°C drift rate and a full-scale output of 4.096V. The device operates on a single 4.5V to 5.5V supply and utilizes a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes rail-to-rail output buffers, double-buffered data latches, and a power-on reset circuit configured to zero-scale in internal reference mode. The component is housed in a 14-lead DFN package and supports commercial temperature operation.

Feature Summary

• Octal architecture with 8 independent 8-bit DAC channels
• Integrated precision reference providing 4.096V full-scale output
• I2C-compatible serial interface with selectable slave addresses via CA pins
• Power-on reset function defaults outputs to zero-scale

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF corresponds to the tape and reel packaging configuration required for automated assembly processes. Confirm that the C-grade temperature rating aligns with the operational environment specifications before finalizing procurement orders.

Selection Notes

Select this part when eight isolated voltage outputs are required within a compact footprint. Ensure the system supply voltage remains between 4.5V and 5.5V to support the 4.096V internal reference. Verify that the I2C bus timing requirements meet the standard or fast mode specifications defined in the datasheet.

Part Context

This component belongs to the LTC2637 family, which offers variations in resolution (8, 10, and 12 bits), package type (DFN or MSOP), and temperature grades (Commercial, Industrial, Automotive). The H-suffix indicates the 4.096V full-scale range, while the Z-suffix designates the zero-scale power-on reset behavior.

Replacement Considerations

Direct functional substitutes within the same family include the LTC2637CDE-LZ8#TRPBF for a 2.5V full-scale range or the LTC2637IDE-HZ8#TRPBF for extended industrial temperature operation. Package compatibility must be verified when switching between DFN and MSOP variants.