DS1091LUA-200/V+

Clock Generators, PLLs, Frequency Synthesizers Overview

The DS1091LUA-200/V+ is an automotive-grade, factory-trimmed clock generator producing a center-dithered spread-spectrum output at 200kHz. It operates on a 3.0V to 3.6V supply within the -40°C to +125°C temperature range. The device features pin-selectable dither magnitudes of 0%, ±1%, ±2%, or ±4% and two selectable dither rates via the DR pin. Packaged in an 8-pin µMAX with no internal PLL, it provides a nominal accuracy of ±0.25% at 25°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Center-dithered spread-spectrum output at 200kHz
• Automotive qualification (-40°C to +125°C)
• Pin-selectable dither magnitude (0%, ±1%, ±2%, ±4%)
• Single-ended square-wave output

Clock Generators, PLLs, Frequency Synthesizers Applications

• Automotive infotainment systems
• Industrial control units
• LCD displays

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the 'V' suffix confirms AEC-Q100 automotive qualification and the '+ suffix indicates lead-free/RoHS compliance. Confirm the '-200' code matches the required 200kHz frequency. Check for the 'T' suffix if tape-and-reel packaging is needed instead of standard tube.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part for applications requiring fixed-frequency clock generation with EMI reduction. Ensure the load capacitance does not exceed 50pF. Verify that the required dither rate aligns with the available settings defined by the DR pin logic level relative to the 200kHz output frequency.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the DS1091L EconOscillator family. The 'UA' designation specifically identifies the center-dithered variant, distinguishing it from the down-dithered DS1091LUB series. It serves as a low-cost alternative to crystal oscillators in automotive environments.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

DS1091LUA-200+ offers identical electrical specifications without automotive qualification. DS1091LUB-200/V+ provides down-dithering instead of center-dithering. No direct cross-model substitutes are documented.

Clock Generators, PLLs, Frequency Synthesizers FAQ

How is the dither rate determined?

The dither rate is selected via the DR pin logic level and calculated based on the output frequency using the formula fDITHER RATE = fOUT / n, where n varies according to the frequency range.

What is the power-up behavior?

Upon power application, the output remains in the low state until the power-up time (tPU) elapses, preventing erroneous transitions during initialization.

Does the device include a PLL?

No, the DS1091LUA-200/V+ is a standalone oscillator without a Phase-Locked Loop (PLL).