LTC2637CMS-HMX10#PBF

Overview

The LTC2637CMS-HMX10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features a 16-lead MSOP package and operates on a single 4.5V to 5.5V supply. The device includes an integrated precision reference with a full-scale output of 4.096V and a temperature coefficient of 10ppm/°C. 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 external reference mode.

Feature Summary

• Octal 10-bit resolution with rail-to-rail buffered outputs
• Integrated 4.096V precision reference (±10ppm/°C)
• I2C interface with selectable slave addresses via CA0, CA1, CA2 pins
• Power-on reset configured for mid-scale output in external reference mode

Applications

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

Procurement Notes

Verify the specific suffix HMX indicates power-on reset behavior for external reference configurations. Confirm the C-grade temperature range (0°C to 70°C) meets application requirements. Ensure the 16-lead MSOP package dimensions align with PCB layout constraints. Check RoHS compliance status as indicated by the #PBF designation.

Selection Notes

Select this part when eight independent voltage outputs are required with moderate precision. The H variant supports higher full-scale voltages compared to the L variant. Consider the HMX suffix if mid-scale initialization is preferred during power-up in external reference setups. Verify I2C bus speed compatibility with the host controller.

Part Context

This component belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions. The CMS suffix denotes the commercial temperature grade and MSOP packaging. Other variants include DE packages and different reset behaviors (MI, Z). The family shares identical pinouts and core architecture across resolutions.

Replacement Considerations

Direct substitutes within the same family include LTC2637CMS-HMI10#PBF (different reset behavior) or LTC2637CMS-HZ10#PBF (zero-scale reset). Cross-resolution parts like LTC2637CMS-HMX8#PBF or LTC2637CMS-HMX12#PBF share the same package and interface but differ in linearity specifications.