LTC2637IMS-HMX10#PBF

Overview

The LTC2637IMS-HMX10#PBF is an octal, 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device utilizes a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key specifications include rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 85°C temperature range, and ultralow DAC-to-DAC crosstalk (<3nV•s). Power-on reset defaults to mid-scale in external reference mode.

Feature Summary

• Octal architecture with 10-bit resolution and 4.096V full-scale output
• Integrated 10ppm/°C precision reference with selectable internal or external operation
• Rail-to-rail output buffers guaranteed monotonic from –40°C to 85°C
• Ultralow crosstalk between channels (<3nV•s) and double-buffered data latches

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 suffix HMX indicates power-on reset to mid-scale in external reference mode. Confirm the IMS designation corresponds to the 16-lead MSOP package and Industrial temperature grade. Ensure compatibility with the required 4.5V to 5.5V supply voltage for the H-grade full-scale specification.

Selection Notes

Select this part when eight independent voltage outputs are required with high isolation. The HMX suffix is critical if the system relies on an external reference and requires a mid-scale startup state. Compare settling times of 4.3µs against application speed requirements. Consider the MSOP package dimensions for PCB layout constraints.

Part Context

This component belongs to the LTC2637 family, which includes 12-, 10-, and 8-bit variants. The IMS variant specifically denotes the Industrial temperature range and MSOP packaging. Other suffixes like LMI or HZ offer different reset behaviors or commercial temperature grades within the same functional family.

Replacement Considerations

Direct substitutes within the same family include LTC2637IMS-LMX10#PBF for lower voltage operation or LTC2637IMS-HMI10#PBF for internal reference mid-scale reset. Cross-family replacements require verifying I2C compatibility and pinout alignment.