DS1091LUA-033+

Clock Generators, PLLs, Frequency Synthesizers Overview

The DS1091LUA-033+ is a factory-trimmed, automotive-grade spread-spectrum clock generator operating within the -40°C to +125°C temperature range. It provides a center-dithered output at a fixed frequency of 33.3MHz with nominal accuracy of ±0.25% at 25°C and ±1.75% across voltage and temperature variations. The device operates on a 3.0V to 3.6V supply, drawing approximately 16mA. Packaged in an 8-pin µMAX format, it features pin-selectable dither magnitude (0%, ±1%, ±2%, or ±4%) and selectable dither rates via the DR pin.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Center-dithered spread-spectrum output at 33.3MHz
• Automotive temperature range (-40°C to +125°C)
• Pin-selectable dither magnitudes: 0%, ±1%, ±2%, ±4%
• ±1.75% frequency accuracy across temperature and voltage

Clock Generators, PLLs, Frequency Synthesizers Applications

• Automotive infotainment systems
• POS terminals
• LCD displays
• Printers
• Industrial control equipment

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix configuration against the manufacturer's ordering information table. Confirm that the package type matches the required footprint for the design. Ensure the component meets RoHS compliance requirements if mandated by the project specifications.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when a fixed 33.3MHz center-dithered clock is required for automotive applications. Verify that the load capacitance does not exceed 50pF. Ensure the SEL0 and SEL1 pins are configured correctly to achieve the desired dither magnitude.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the DS1091L EconOscillator family, designed to reduce electromagnetic interference (EMI) through spread-spectrum techniques. It serves as a low-cost alternative to programmable oscillators in environments requiring strict EMI mitigation and automotive reliability standards.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other frequencies within the DS1091LUA series, such as DS1091LUA-027+ or DS1091LUA-066+, provided the system timing requirements allow for different clock speeds. Cross-family replacements require verification of pin compatibility and electrical characteristics.