LTC2637IDE-HMX12#PBF

Overview

The LTC2637IDE-HMX12#PBF 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 and operates on a single 4.5V to 5.5V supply. The device communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity error of ±2.5 LSB, a settling time of 5µs at 5V, and ultralow DAC-to-DAC crosstalk of 3nV•s. It incorporates double-buffered data latches and a power-on reset circuit configured to initialize outputs to mid-scale in external reference mode.

Feature Summary

• Octal architecture with 12-bit resolution and rail-to-rail buffered outputs
• Integrated 4.096V precision reference with 10ppm/°C drift
• I2C interface with selectable internal or external reference input
• Power-on reset to mid-scale for external reference configurations

Applications

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

Procurement Notes

Verify the specific ordering suffix HMX12#PBF against official documentation to confirm the mid-scale reset behavior and tape-and-reel packaging format. Ensure the design supports the required 4.5V to 5.5V supply range and I2C bus timing constraints for reliable operation.

Selection Notes

Select this component when eight independent 12-bit channels are required within a compact footprint. The H-grade variant supports extended temperature ranges up to 125°C. Verify that the 4.096V internal reference span meets system requirements or configure for external reference operation if different voltage levels are necessary.

Part Context

This part belongs to the LTC2637 family, which includes 8-bit, 10-bit, and 12-bit variants. The 'H' designation indicates automotive-grade performance over –40°C to 125°C. The 'MS' package type corresponds to the 16-lead MSOP form factor, while 'DE' denotes the 14-lead DFN package.

Replacement Considerations

LTC2637IDE-HMI12#PBF: Identical electrical specifications but resets to mid-scale in internal reference mode instead of external reference mode.