LTC2636CMS-HZ12#PBF

Overview

The LTC2636CMS-HZ12#PBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated high-accuracy reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 4.096V. The device operates on a single supply ranging from 4.5V to 5.5V and utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. It includes double-buffered data latches, power-on reset to zero-scale, and rail-to-rail output buffers. Packaged in a 16-lead MSOP, it ensures monotonicity over the commercial temperature range of 0°C to 70°C.

Feature Summary

• Octal 12-bit resolution with ±2.5 LSB maximum integral nonlinearity (INL)
• Integrated 4.096V full-scale reference with 10ppm/°C drift
• SPI/MICROWIRE compatible 3-wire serial interface operating at 50MHz
• Power-on reset to zero-scale for consistent system initialization

Applications

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

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free construction and tube packaging. Confirm the CMS package designation corresponds to the 16-lead MSOP form factor. Ensure the HZ12 suffix aligns with the required 4.096V full-scale output and zero-scale power-on reset behavior for the target design.

Selection Notes

Select this component when eight independent 12-bit channels are required with low drift. The H-grade internal reference necessitates a 4.5V to 5.5V supply, distinguishing it from L-grade 2.5V variants. The zero-scale reset option is critical for applications where downstream circuits must remain inactive during power-up. Verify thermal constraints for the MSOP package under maximum load conditions.

Part Context

This part belongs to the LTC2636 family of octal DACs, which also offers 10-bit and 8-bit resolutions. Variants exist with mid-scale reset options (MI/MX) or external reference modes. The HZ12 specifically denotes the 12-bit resolution, 4.096V internal reference, and zero-scale reset configuration within the commercial temperature grade.

Replacement Considerations

Direct substitutes include other LTC2636 variants with different resolutions (e.g., LTC2636CMS-HZ10#PBF for 10-bit) or reset behaviors (e.g., LTC2636CMS-HMI12#PBF for mid-scale reset). Cross-family replacements like the LTC2637 offer I2C interfaces instead of SPI.