LTC2637HDE-HZ10#PBF

Overview

The LTC2637HDE-HZ10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and 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 –40°C to 125°C automotive temperature range.

Feature Summary

• Octal 10-bit resolution with integrated 4.096V precision 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

• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems

Procurement Notes

Verify the specific ordering suffix HZ10#PBF against the manufacturer's current documentation to confirm package type (14-lead DFN), temperature grade (H-grade), and power-on reset behavior. Ensure compatibility with system voltage requirements (4.5V to 5.5V) and I2C bus specifications before procurement.

Selection Notes

Select this component for applications requiring multiple low-cost, high-accuracy voltage outputs with minimal external components. The H-grade variant is suitable for automotive environments requiring operation up to 125°C. Consider the 14-lead DFN package for space-constrained designs. Verify that the 4.096V full-scale range meets the downstream circuit input requirements.

Part Context

This part belongs to the LTC2637 family of octal DACs, which also includes 8-bit and 12-bit variants (LTC2637-L/I/H series). The 'H' designation indicates the automotive temperature grade (–40°C to 125°C) and 4.096V internal reference. The 'DE' suffix specifies the 14-lead DFN package. Other variants may offer different resolutions, reference voltages (2.5V), or package types (MSOP).

Replacement Considerations

Direct substitutes within the same family include LTC2637HDE-HZ8#PBF (8-bit) and LTC2637HDE-HZ12#PBF (12-bit), provided pinout and software register compatibility are verified. For different packages, consider LTC2637HMS-HZ10#PBF (16-lead MSOP). Cross-model replacements require checking I2C address configurations and settling time differences.