Automotive Temperature Range Spread-Spectrum EconOscillator

Industry's Only 3V All-Silicon Center Spread Clock Generator to Reduce EMI in the Automotive Temperature Range

Please check latest availability status for a specific part variant.


The DS1091L is a low-cost clock generator that is factory-trimmed to output frequencies from 130kHz to 66.6MHz with a nominal accuracy of ±0.25%. The device can also produce a center- or down-dithered spread-spectrum output with pin-selectable dither magnitude and rate. Assembled in an 8-pin µMAX® package, the DS1091L is designed to operate with a 3.0V to 3.6V power supply over the automotive temperature range (-40°C to +125°C).
DS1091L: Typical Operating Circuit DS1091L: Typical Operating Circuit Enlarge+

Key Features

  • Spread-Spectrum Clock Output from 130kHz to 66.6MHz
  • -40°C to +125°C Operating Temperature Range
  • ±1.75% Accuracy Across Temperature and Voltage
  • Factory Trimmed
  • Center-Dithered (DS1091LUA) or Down-Dithered (DS1091LUB) Spread-Spectrum Output
  • Pin-Selectable Center-Dither Magnitude of 0%, ±1%, ±2%, or ±4%
  • Pin-Selectable Down-Dither Magnitude of 0%, -2%, -4%, or -8%
  • Pin-Selectable Dither Rate
  • 3.0V to 3.6V Supply Operation
  • Lead-Free, 8-Pin µMAX Package


  • Automotive Infotainment
  • Industrial Control
  • LCD Displays
  • POS Terminals
  • Printers
Part NumberfOUT
User Prog. fOUTSpread SpectrumVCC
Reset OutOper. Temp.
maxminmaxSee Notes
DS1091L 66.6130
±1.2 (0°C to 70°C)
±1.75 (-40°C to 125°C)
NoYes3.0 to 3.6No-40 to +125
$0.87 @1k
See All Silicon Oscillators (17)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

App Note 5425 Thermoelectric Cooler Control Using the DS4830A Optical Microcontroller

Quality and Environmental Data

Product Reliability Reports: DS1091L.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


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