Maxim's DS1091L is an integrated spread-spectrum, silicon oscillator that reduces EMI emissions in harsh automotive environments of -40 to +125°C. The DS1091L is factory-trimmed to be used as a standalone oscillator from 130 kHz to 66,6 MHz. The centre frequency is accurate to within ±1,75% over voltage and temperature. This device reduces radiated emissions (RMS voltage) up to 23 dB compared to crystal oscillators, according to Maxim. Used as the system clock, the spread-spectrum DS1091L can simplify, or even eliminate shielding and filtering, which reduces cost and minimises design time. To allow simple optimisation of system design, the devices' dither magnitude (centre- or down-dither options) and dither frequency, are pin-selectable. Spread-spectrum modulation can also be disabled. The DS1091L operates from 3 V to 3,6 V and is available in the tiny 8-pin microMAX package.
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