LTC2637IDE-HZ10#PBF

Overview

The LTC2637IDE-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 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.

Feature Summary

• Octal 10-bit resolution with guaranteed monotonicity over the operating temperature range
• Integrated 4.096V full-scale reference with ±10ppm/°C drift
• Rail-to-rail output buffers with ultralow DAC-to-DAC crosstalk (<3nV•s)
• Power-on reset to zero-scale in internal reference mode

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems
• Optical networking

Procurement Notes

Verify the specific ordering suffix HZ10#PBF against official documentation to confirm the package type, temperature grade, and power-on reset behavior. Ensure compatibility with the required 4.5V to 5.5V supply range for the H-grade variant. Confirm that the 14-lead DFN package meets the thermal and mechanical requirements of the target design.

Selection Notes

Select this part when eight independent voltage outputs are required with high linearity and low noise. The H-grade designation indicates suitability for automotive applications (-40°C to 125°C). Choose between internal or external reference modes based on system stability needs. The Z suffix ensures a known zero-scale state upon power-up, which is critical for safety-critical or precise initialization scenarios.

Part Context

This component belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions. The IDE suffix denotes the Industrial temperature grade (-40°C to 85°C), while the H indicates the 4.096V full-scale internal reference. The Z suffix specifies the power-on reset behavior to zero-scale. Other variants include L-grade for 2.5V output and different reset configurations like M (mid-scale).

Replacement Considerations

Direct substitutes within the same family include LTC2637IDE-HZ12#PBF (12-bit) and LTC2637IDE-HZ8#PBF (8-bit), provided pinout and software register compatibility are maintained. For external reference applications, the HMX suffix variants may be considered if mid-scale reset is preferred.