LTC2637HMS-LMI10#PBF

Overview

The LTC2637HMS-LMI10#PBF is an octal 10-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 utilizes a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1 LSB, a settling time of 4.3µs at ±1 LSB, 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 internal reference mode.

Feature Summary

• Octal architecture with 10-bit resolution and rail-to-rail buffered outputs
• Integrated 4.096V precision reference with 10ppm/°C drift
• I2C interface with selectable slave addresses via CA0-CA2 pins
• Power-on reset to mid-scale for internal reference operation

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 LMI10#PBF against official Analog Devices documentation to confirm the mid-scale power-on reset configuration and tape-and-reel packaging format. Ensure compatibility with the required 4.5V to 5.5V supply range and I2C bus timing constraints before integration.

Selection Notes

Select this component when eight independent voltage outputs are required within a compact footprint. The H-grade variant supports automotive temperature ranges up to 125°C. Verify that the 4.096V internal reference span meets system requirements; otherwise, consider external reference configurations or alternative full-scale options like the LTC2637-L series.

Part Context

This part belongs to the LTC2637 family, which includes 8-bit, 10-bit, and 12-bit variants. The 'H' designation indicates the automotive temperature grade (-40°C to 125°C) and 4.096V full-scale output. The 'MS' suffix denotes the 16-lead MSOP package, while 'LMI10' specifies the 10-bit resolution and mid-scale power-on reset behavior.

Replacement Considerations

Direct functional equivalents within the same family include LTC2637HMS-HMI10#PBF (different reset behavior) or LTC2637HMS-LMI10#PBF (different full-scale voltage). Cross-package replacements such as the DFN version (LTC2637HDE-LMI10#PBF) require schematic and PCB layout adjustments due to pinout differences.