LTC2637CMS-LMI8#PBF

Overview

The LTC2637CMS-LMI8#PBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features a 16-lead MSOP package and operates within a commercial temperature range of 0°C to 70°C. The device includes an integrated precision reference providing a 2.5V full-scale output, with a supply voltage range of 2.7V to 5.5V. Communication is handled via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Power-on reset defaults to mid-scale in internal reference mode.

Feature Summary

• Octal 8-bit resolution with rail-to-rail buffered outputs
• Integrated 2.5V precision reference with ±10ppm/°C drift
• I2C serial interface with selectable slave addresses via CA0 pin
• Power-on reset configured for mid-scale output initialization

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable equipment requiring low power consumption

Procurement Notes

Verify the specific ordering suffix LMI8#PBF against the manufacturer's current product selection guide to confirm availability and lead times. Ensure the commercial temperature grade (C) meets the operational requirements of the target environment. Cross-reference the 16-lead MSOP package dimensions with PCB footprint specifications before finalizing design integration.

Selection Notes

Select this part when eight independent 8-bit voltage outputs are required with minimal external component count. The internal 2.5V reference simplifies design compared to external reference options. Verify that the 0°C to 70°C commercial temperature range is sufficient; otherwise, consider the Industrial (I) or Automotive (H) grades. Ensure the I2C bus speed supports the system's data update rate requirements.

Part Context

This component belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions in both DFN and MSOP packages. The CMS variant specifically denotes the Commercial temperature grade and MSOP packaging. Other variants include the IDE (Industrial, DFN) and HMS (Automotive, MSOP) series, sharing similar electrical characteristics but differing in temperature ranges and physical form factors.

Replacement Considerations

Direct substitutes within the same family include LTC2637IMS-LMI8#PBF for industrial temperature operation or LTC2637CDE-LMI8#PBF for DFN packaging. Ensure pin compatibility and software register mapping remain identical when swapping between package types or temperature grades.