
Alliance Semiconductor
Product Description
The P2005X is a versatile spread spectrum frequency modulator designed specifically for input clock frequencies from 8MHz to 32MHz. Refer Output Frequency Selection Table. The P2005X can generate an EMI reduced clock from crystal, ceramic resonator, or system clock. The P2005X offers various percentage deviations ranging form ±0.6% to ±3.0%. Refer Frequency Deviation Selections Table. The P2005X reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of down stream clock and data dependent signals.
FEATUREs
◾ FCC approved method of EMI attenuation.
◾ Provides up to 15dB of EMI suppression.
◾ Generates a 1X or ½ X low EMI spread spectrum
clock of the input frequency.
◾ Input frequency range: 8MHz to 32MHz.
◾ Internal loop filter minimizes external components
and board space.
◾ Frequency deviation:
o P2005A: ± 1% to ± 3%
o P2005S: ± 0.6% to ± 1.8%
◾ SSON# control pin for spread spectrum enable
and disable options.
◾ Low cycle-to-cycle jitter.
◾ 3.3V or 5V operating voltage range.
◾ 16mA output drives.
◾ TTL or CMOS compatible outputs.
◾ Ultra-low power CMOS design.
◾ Available in 8-pin SOIC and TSSOP.
APPLICATIONs
The P2005X is targeted towards EMI management for high-speed digital applications such as PC peripheral devices, consumer electronics and embedded controller systems.