Features: · FCC approved method of EMI attenuation· Generates a low EMI spread spectrum and a nonspread reference signal of the input clock frequency· Optimized for input frequency range from 20 to 32 MHz· Internal loop filter minimizes external components and board space· Two selectable spread ra...
P2560B: Features: · FCC approved method of EMI attenuation· Generates a low EMI spread spectrum and a nonspread reference signal of the input clock frequency· Optimized for input frequency range from 20 to ...
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Symbol | Parameter | Rating | Unit |
VDD, VIN | Voltage on any pin with respect to GND | -0.5 to +7.0 | V |
TSTG | Storage temperature | -65 to +125 | ° C |
TA | Operating temperature | 0 to +70 | ° C |
The P2560B is a versatile spread spectrum frequency modulator designed specifically for a wide range of clock frequencies. It reduces electromagnetic interference (EMI) at the clock source allowing system-wide reduction of EMI of downstream clock and data dependent signals. P2560B allows significant system cost savings by reducing the number of circuit board layers and shielding traditionally required to pass EMI regulations.
The P2560B modulates the output of a single PLL in order to spread the bandwidth of a synthesized clock, thereby decreasing the peak amplitudes of its harmonics. This results in significantly lower system EMI compared to the typical narrow band signal produced by oscillators and most clock generators. Lowering EMI by increasing a signal's bandwidth is called spread spectrum clock generation.
The P2560B uses the most efficient and optimized modulation profile approved by the FCC and is mplemented by using a proprietary all-digital method.