LTC2637CMS-LZ10#TRPBF

Overview

The LTC2637CMS-LZ10#TRPBF is an octal 10-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 zero-scale in internal reference mode.

Feature Summary

• Octal architecture with 10-bit resolution per channel
• Integrated 2.5V full-scale reference with ±10ppm/°C drift
• Rail-to-rail buffered outputs guaranteed monotonic over temperature
• Ultralow DAC-to-DAC crosstalk (<3nV•s typical)

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the 'L' designation corresponds to the 2.5V internal reference variant and the 'Z' designation ensures power-on reset to zero-scale. Ensure the 'MS' package type matches the 16-lead MSOP requirement for the design.

Selection Notes

Select this part when eight independent 10-bit voltage outputs are required within a compact footprint. The 2.5V internal reference suits applications where a precise, low-drift baseline is needed without external components. Verify that the 2.7V minimum supply voltage aligns with the system's power rails, as the H-grade variant requires 4.5V minimum.

Part Context

This component belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions. The CMS suffix denotes the 16-lead MSOP package and commercial temperature grade (0°C to 70°C). The LZ10 specifies the 10-bit resolution, zero-scale power-on reset behavior, and 2.5V internal reference configuration.

Replacement Considerations

Direct substitutes include other LTC2637 variants with matching resolution and package, such as LTC2637IMS-LZ10#PBF for tube packaging or LTC2637CMS-HZ10#TRPBF if automotive temperature range (-40°C to 125°C) is required instead of commercial.