LTC2637HDE-HZ12#TRPBF

Overview

The LTC2637HDE-HZ12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference providing a 4.096V full-scale output with a temperature coefficient of 10ppm/°C. 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 includes double-buffered data latches, power-on reset to zero-scale in internal reference mode, and rail-to-rail output buffers guaranteed monotonic over the automotive temperature range of –40°C to 125°C.

Feature Summary

• Octal 12-bit resolution with integrated 4.096V, 10ppm/°C reference
• I2C-compatible serial interface with selectable slave addresses
• Rail-to-rail output buffers guaranteed monotonic from –40°C to 125°C
• Power-on reset to zero-scale in internal reference mode

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive
• Optical Networking

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the H-grade designation matches the required –40°C to 125°C operating temperature range for the application environment.

Selection Notes

Select this part for applications requiring eight independent 12-bit channels with high accuracy and low drift. Ensure the system supply voltage falls within the 4.5V to 5.5V range required for the H-grade variant. Verify that the I2C bus speed supports the desired update rate and that the 14-lead DFN package fits the PCB footprint constraints.

Part Context

This component belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions in both DFN and MSOP packages. The H-grade variant specifically targets automotive and extended industrial environments, distinguishing it from the C-grade (0°C to 70°C) and I-grade (–40°C to 85°C) options available in the same series.

Replacement Considerations

Direct substitutes include other LTC2637 variants with different resolutions or package types, such as LTC2637HMS-HZ12#TRPBF (MSOP package) or LTC2637IDE-HZ12#PBF (Industrial grade). Ensure pin compatibility and thermal performance match when substituting.