LTC2637CDE-LMX10#TRPBF

Overview

The LTC2637CDE-LMX10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a high-accuracy internal reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 2.5V. The device operates on a single supply ranging from 2.7V to 5.5V 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 external reference mode.

Feature Summary

• Octal architecture with 10-bit resolution and rail-to-rail output buffers
• Integrated precision reference yielding 2.5V full-scale output with 10ppm/°C drift
• I2C-compatible serial interface with selectable slave addresses via CAO pin
• Power-on reset to mid-scale for external reference configurations

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms the tape and reel packaging format containing 2500 pieces. Confirm the C grade designation aligns with the required commercial operating temperature range of 0°C to 70°C. Ensure the L suffix matches the 2.7V to 5.5V supply requirement and 2.5V full-scale specification. Validate that the DE package corresponds to the 14-lead DFN form factor.

Selection Notes

Select this component when eight independent voltage outputs are required within a compact footprint. The MX suffix indicates the power-on reset behavior is set to mid-scale specifically for external reference applications; choose Z or MI suffixes if zero-scale or internal reference mid-scale resets are needed. Verify that the 10-bit resolution meets system accuracy requirements compared to the available 8-bit or 12-bit variants.

Part Context

This part belongs to the LTC2637 family of octal DACs, which also includes 8-bit and 12-bit resolutions. Variants exist with different full-scale voltages, such as the H-grade offering 4.096V full-scale. Package options include the 14-lead DFN found in this model and a 16-lead MSOP. The family shares common interface protocols and architectural features while differing in resolution and reset behaviors.

Replacement Considerations

Direct substitutes within the same family include LTC2637CDE-LMI10#TRPBF and LTC2637CDE-LZ10#TRPBF, which share identical electrical specifications but differ in power-on reset logic. Cross-package equivalents like the MSOP variant offer the same functionality in a different physical outline.