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Part Number: P2560B
Description: The P2560B is a versatile spread spectrum frequency modulator designed specifically for a wide range o...
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P2560B
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DataSheet
General Description
P2560B General Description
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. It 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.
P2560B Maximum Ratings
| 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 |
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 32 MHz
· Internal loop filter minimizes external components
and board space
· Two selectable spread ranges
· Low inherent cycle-to-cycle jitter
· 3.3 V or 5 V operating voltage
· CMOS/TTL compatible inputs and outputs
· Ultra low power CMOS design: 5.50 mA @3.3 V
· Supports notebook VGA and other LCD timing
controller applications
· SSON pin for Spread Spectrum On/Off and
Standby Mode controls
· Available in 8-pin SOIC and TSSOP
· 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 ranges
· Low inherent cycle-to-cycle jitter
· 3.3 V or 5 V operating voltage
· CMOS/TTL compatible inputs and outputs
· Ultra low power CMOS design: 5.50 mA @3.3 V
· Supports notebook VGA and other LCD timing
controller applications
· SSON pin for Spread Spectrum On/Off and
Standby Mode controls
· Available in 8-pin SOIC and TSSOP
P2560B Typical Application
The P2560B is targeted toward the notebook VGA chip and other displays using an LVDS interface, PC peripheral devices, and embedded systems
P2560B Connection Diagram
P2560B
PDF/DataSheet Download
- Datasheet: P2560B
- File Size: 191853 KB
- Manufacturer: ALSC [Alliance Semiconductor Corporation]
- Click here to Download
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