LTC2636HMS-LZ8#TRPBF

Overview

The LTC2636HMS-LZ8#TRPBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 4.096V. The device operates on a single 4.5V to 5.5V supply and utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. It includes rail-to-rail output buffers guaranteed monotonic over the –40°C to 125°C automotive temperature range. Power-on reset defaults to zero-scale in internal reference mode.

Feature Summary

• Octal 8-Bit Resolution with Rail-to-Rail Output Buffers
• Integrated 10ppm/°C Precision Reference (4.096V Full-Scale)
• Automotive Temperature Grade (–40°C to 125°C)
• Power-On Reset to Zero-Scale

Applications

• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the MS package designation corresponds to the 16-lead MSOP form factor. Ensure the H-grade specification aligns with the required 4.5V to 5.5V supply voltage range for the application.

Selection Notes

Select this part when eight independent DAC channels are required within a compact footprint. The H-grade variant is necessary for environments exceeding 85°C. The LZ suffix ensures outputs initialize to zero upon power-up, which is critical for safety or protection circuits. Verify that the 4.096V full-scale range meets the downstream signal requirements.

Part Context

This component belongs to the LTC2636 family of octal DACs. Variants differ by resolution (8, 10, or 12 bits), package type (DFN or MSOP), and temperature grade (C, I, or H). The HMS designation specifically identifies the 16-lead MSOP package with automotive temperature rating.

Replacement Considerations

LTC2636IMS-LZ8#PBF: Same electrical specifications but supplied in tube packaging instead of tape and reel.

FAQ

What is the default output state after power-up?

The LTC2636HMS-LZ8 resets all DAC outputs to zero-scale upon power-up.

What is the minimum supply voltage required?

The device requires a minimum supply voltage of 4.5V due to the H-grade internal reference configuration.

Does the device support external references?

Yes, the REF pin can accept an external voltage between 1V and VCC to set the full-scale output.