P1-810-2, P1817A, P1818-8816 Selling Leads, Datasheet
MFG:N/A Package Cooled:N/A D/C:N/A
P1-810-2, P1817A, P1818-8816 Datasheet download
Part Number: P1-810-2
MFG: N/A
Package Cooled: N/A
D/C: N/A
P1-810-2, P1817A, P1818-8816
- Table of contents:
Info of P1-810-2
Info of P1817A
Info of P1818-8816
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About P1-25/EA/SVB
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Datasheet: P1-25/EA/SVB
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About P1817A
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Datasheet: P1817A
File Size: 309935 KB
Manufacturer: ALSC [Alliance Semiconductor Corporation]
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About P1800AD
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Datasheet: P1800AD
File Size: 1922108 KB
Manufacturer: LITTELFUSE [Littelfuse]
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P1817A General Description
The P1817 is a versatile spread spectrum frequency modulator designed specifically for input clock frequencies.The P1817 reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of down stream clock and data dependent signals. The P1817 allows significant system cost savings by reducing the number of circuit board layers ferrite beads, shielding and other passive components that are traditionally required to pass EMI regulations.
The P1817 modulates the output of a single PLL in order to "spread" the bandwidth of a synthesized clock, and more importantly, decreases 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 frequency generators. Lowering EMI by increasing a signal's bandwidth is called 'spread spectrum clock generation'.
The P1817 uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method.
P1817A 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 |
P1817A Features
`FCC approved method of EMI attenuation.
`Generates a low EMI spread spectrum clock of the input frequency.
`Optimized for frequency range from:
o P1817A 20 to 30MHz. Operation
o P1817B 10 to 20MHz Operation
`Internal loop filter minimizes external components and board space.
`Two selectable spread ranges.
`Low inherent cycle-to-cycle jitter.
`3.3V or 5V operating voltage range.
`TTL or CMOS compatible outputs.
`Ultra-low power CMOS design.
`3.17mA @3.3V, 10MHz | 6.20mA@5.0V, 10MHz
`4.28mA @3.3V, 14MHz | 7.50mA @5.0V, 14MHz
`5.50mA @3.3V, 20MHz | 9.50mA @5.0V, 20MHz
`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 clock of the input frequency.
`Optimized for frequency range from:
o P1817A 20 to 30MHz. Operation
o P1817B 10 to 20MHz Operation
`Internal loop filter minimizes external components and board space.
`Two selectable spread ranges.
`Low inherent cycle-to-cycle jitter.
`3.3V or 5V operating voltage range.
`TTL or CMOS compatible outputs.
`Ultra-low power CMOS design.
`3.17mA @3.3V, 10MHz | 6.20mA@5.0V, 10MHz
`4.28mA @3.3V, 14MHz | 7.50mA @5.0V, 14MHz
`5.50mA @3.3V, 20MHz | 9.50mA @5.0V, 20MHz
`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
P1817A Typical Application
The P1817 is targeted towards notebook VGA chip and other displays using an LVDS interface, PC peripheral devices, and embedded systems.
P1817A Connection Diagram
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