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I2779A

ETC
Part Number I2779A
Manufacturer ETC
Description Low-Cost Notebook EMI Reduction
Published Nov 23, 2005
Detailed Description Production February 2003 ® P2779A Low-Cost Notebook EMI Reduction IC Features • • • • • • Provides up to 15 dB of EMI...
Datasheet PDF File I2779A PDF File

I2779A
I2779A

Overview
Production February 2003 ® P2779A Low-Cost Notebook EMI Reduction IC Features • • • • • • Provides up to 15 dB of EMI suppression FCC approved method of EMI attenuation Generates a 1X low EMI spread spectrum clock of the input frequency Operates between 20MHz and 38MHz input frequency range External loop filter for spread percentage adjustment Spreading ranges from ±0.
25% to ±2.
5% • • • • • • • • Ultra low cycle-to-cycle jitter Zero-cycle slip at small deviations 3.
3 V operating voltage range 10 mA output drives TTL or CMOS compatible outputs Low power CMOS design Available in 8-pin SOIC and TSSOP Available for industrial temperature operating range (-40º C to 85º C) Block Diagram PD LF VDD XIN XOUT Modulation Crystal oscillator Frequency divider Feedback divider Phase detector Loop filter PLL VCO Output divider REF ModOUT VSS Product Description The P2779A is a versatile spread spectrum frequency modulator designed specifically for mobile and digital camera and other digi...


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