LTC2637CMS-HZ10#PBF

Overview

The LTC2637CMS-HZ10#PBF is an octal 10-bit voltage-output digital-to-analog converter featuring an integrated precision reference with a 10ppm/°C temperature coefficient. It operates from a single 4.5V to 5.5V supply, providing a full-scale output of 4.096V. The device includes rail-to-rail output buffers and guarantees monotonicity over the specified temperature range. Communication is handled via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Upon power-up, the internal registers reset to zero-scale in internal reference mode.

Feature Summary

• Octal 10-bit resolution with rail-to-rail buffered outputs
• Integrated 4.096V full-scale reference with ±10ppm/°C drift
• I2C-compatible serial interface with selectable slave addresses
• Power-on reset to zero-scale in internal reference mode

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 CMS-HZ10 against the manufacturer's current product selection guide to confirm package type, temperature grade, and reset configuration. Ensure the design supports the required 4.5V to 5.5V supply voltage for the H-grade variant. Confirm I2C address pin configurations match the system requirements before finalizing procurement.

Selection Notes

Select this component when eight independent 10-bit voltage outputs are required within a compact footprint. The H-grade designation indicates operation from 4.5V to 5.5V with a 4.096V full-scale range. The Z suffix specifies a power-on reset to zero-scale, which is critical for applications requiring a known safe state upon initialization. Compare settling time and noise specifications against system bandwidth requirements.

Part Context

This part belongs to the LTC2637 family of octal DACs, available in 8-, 10-, and 12-bit resolutions. The family shares common architectural features including low crosstalk and double-buffered data latches. Variants differ by resolution, full-scale voltage (L vs H grades), package (DFN vs MSOP), and power-on reset behavior. The CMS-HZ10 specifically denotes the commercial temperature grade, MSOP package, and zero-scale reset configuration.

Replacement Considerations

Direct substitutes include other LTC2637 variants with matching resolution and package, such as LTC2637CMS-HZ8#PBF or LTC2637CMS-HZ12#PBF, provided the reset behavior and temperature grade align with system needs. Cross-family replacements require verification of pin compatibility and electrical performance margins.