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Maxim intros oscillator to reduce EMI in high temp

Posted: 02 Nov 2006     Print Version  Bookmark and Share

Keywords:Maxim  DS1091L  EconOscillator  oscillator  automotive 

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

The DS1091L is factory-trimmed to be used as a stand-alone oscillator from 130kHz to 66.6MHz. The centre frequency is accurate to within ±1.75 per cent 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 minimises design time. To allow simple optimisation of system design, the DS1091L's dither magnitude (centre- 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 Rs.33.27 (72 cents) (1,000-up, FOB USA).

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