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Oscillator reduces EMI in high temperatures

Posted: 02 Nov 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Maxim? DS1091L? EconOscillator? oscillator? automotive?

Maxim's DS1091L oscillator

Maxim Integrated Products has introduced the DS1091L, an integrated spread-spectrum, silicon EconOscillator that reduces EMI emissions in harsh automotive environments of -40C to 125C.

The DS1091L is factory-trimmed to be used as a standalone oscillator from 130kHz to 66.6MHz. The center frequency is accurate to within 1.75 percent over voltage and temperature. The device reduces radiated emissions (RMS voltage) up to 23dB compared to crystal oscillators, said Maxim. Used as the system clock, the spread-spectrum DS1091L can simplify, or even eliminate, shielding and filtering, the company said, which reduces cost and minimizes design time. To allow simple optimization of system design, the DS1091L's dither magnitude (center- or down-dither options) and dither frequency are pin-selectable. Spread-spectrum modulation can also be disabled.

The DS1091L operates from 3V to 3.6V and is available in the tiny 8-pin microMAX (and a 3-by-3mm TDFN package under development). Pricing begins at 72 cents (1,000-up, FOB USA).

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