LTC2637CMS-LMI8#TRPBF

Overview

The LTC2637CMS-LMI8#TRPBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single 2.7V to 5.5V supply and utilizes 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 reset to mid-scale in internal reference mode.

Feature Summary

• Octal architecture with 8 independent 8-bit DAC channels
• Integrated 2.5V precision reference with ±10ppm/°C drift
• Rail-to-rail output buffers guaranteed monotonic over –40°C to 125°C
• I2C interface with selectable slave addresses via CA0–CA2 pins

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the 'MS' package designation corresponds to the 16-lead MSOP form factor. Ensure the 'C' grade matches the required commercial temperature range of 0°C to 70°C for the application environment.

Selection Notes

Select this part when eight isolated voltage outputs are required within a compact footprint. The 2.5V internal reference suits applications needing lower voltage spans without external components. Verify that the I2C bus speed requirements align with the standard or fast mode capabilities. Consider the 16-lead MSOP package constraints for thermal management if driving significant load currents.

Part Context

This component belongs to the LTC2637 family, which offers 12-, 10-, and 8-bit resolutions. Variants include the LTC2637-L series for 2.7V–5.5V supplies and the LTC2637-H series for 4.5V–5.5V supplies with 4.096V full-scale output. The CMS variant specifically denotes the commercial temperature grade and MSOP package configuration.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes listed for similar LTC2637 variants include LTC2637IDE-HMI8#PBF and LTC2637IMS-LMI10#TRPBF. Verify pin compatibility and electrical specifications before substitution.