LTC2636CMS-HZ12#TRPBF

Overview

The LTC2636CMS-HZ12#TRPBF 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 voltage ranging from 4.5V to 5.5V and communicates via a 3-wire SPI/MICROWIRE-compatible 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 integrated 10ppm/°C reference for 4.096V full-scale output
• SPI/MICROWIRE compatible 3-wire serial interface operating at up to 50MHz
• Power-on reset circuitry defaults outputs to zero-scale
• Rail-to-rail output buffers with ultralow DAC-to-DAC crosstalk (<2.4nV•s)

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive
• Optical Networking

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the MS package designation corresponds to the 16-lead plastic MSOP form factor. Ensure the C grade specification aligns with the required 0°C to 70°C operating temperature range for the target application environment.

Selection Notes

Select this part when eight independent 12-bit channels are required with a fixed 4.096V internal reference. The H suffix denotes the 4.5V to 5.5V supply requirement, distinct from the L variant which supports 2.7V. The Z suffix specifies zero-scale power-on reset, whereas MI or MX variants reset to mid-scale. Verify that the 16-lead MSOP package fits the PCB layout constraints compared to the 14-lead DFN option.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also includes 10-bit and 8-bit resolutions. Variants exist with different full-scale voltages (2.5V or 4.096V), reset behaviors (zero or mid-scale), and packages (DFN or MSOP). The CMS-HZ12 specifically combines the MSOP package, commercial temperature grade, high-voltage internal reference, and zero-scale reset configuration.

Replacement Considerations

Direct substitutes within the same family include LTC2636CMS-MI12#TRPBF for mid-scale reset or LTC2636CMS-LZ12#TRPBF for lower voltage operation. Cross-family replacements like the LTC2637 offer I2C interfaces instead of SPI.