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 ...