LTC2637CMS-LMI12#TRPBF

Overview

The LTC2637CMS-LMI12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features a rail-to-rail output buffer and an integrated precision reference with a full-scale output of 2.5V. The device operates on a single 2.7V to 5.5V supply and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It incorporates double-buffered data latches and a power-on reset circuit configured to reset to mid-scale in internal reference mode. The component is housed in a 16-lead MSOP package and is rated for the commercial temperature range of 0°C to 70°C.

Feature Summary

• Octal 12-bit resolution with maximum INL error of ±2.5LSB
• Integrated 2.5V full-scale precision reference with 10ppm/°C drift
• Rail-to-rail output buffers guaranteed monotonic over temperature
• Ultralow DAC-to-DAC crosstalk (<3nV•s typical)
• Power-on reset to mid-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 that the #TRPBF suffix confirms the tape and reel packaging format containing 2500 pieces per reel. Confirm the 'C' grade designation matches the required commercial operating temperature range of 0°C to 70°C. Ensure the 'MS' package type aligns with the PCB footprint requirements for the 16-lead MSOP form factor.

Selection Notes

Select this part when eight independent 12-bit voltage outputs are required within a compact space. The internal 2.5V reference suits applications where a 2.7V to 5.5V supply is available and mid-scale initialization upon power-up is desired. For higher voltage spans, consider the LTC2637-H variant which provides a 4.096V full-scale output but requires a 4.5V minimum supply.

Part Context

This component belongs to the LTC2637 family of octal DACs, which also includes 8-bit and 10-bit resolution variants. The family shares identical pinouts and functional blocks, differing primarily in resolution, internal reference voltage options (2.5V or 4.096V), and power-on reset behaviors. The MSOP package option provides a smaller footprint compared to the 14-lead DFN alternative.

Replacement Considerations

Direct substitutes within the same family include LTC2637CMS-LMI10#TRPBF (10-bit) and LTC2637CMS-LMI8#TRPBF (8-bit). Other valid replacements depend on specific resolution needs and reset configurations, such as the LTC2637CMS-LZ12#TRPBF which resets to zero-scale instead of mid-scale.