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MFG:ALLIANCE D/C:03+
Part Number: P2042A
MFG: ALLIANCE
D/C: 03+
Description: The P2042A is a versatile spread spectrum frequency modulator designed specifically for digital flat p...
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P2042A
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DataSheet
General Description
P2042A General Description
The P2042A is a versatile spread spectrum frequency modulator designed specifically for digital flat panel applications. The P2042A reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of down stream clock and data dependent signals. The P2042A 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 P2042A uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method.
The P2042A 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'.
P2042A Maximum Ratings
|
Symbol |
Parameter |
Rating |
Unit |
|
VDD, VIN |
Voltage on any pin with respect to Ground |
-0.5 to +7.0 |
V |
|
TSTG |
Storage temperature |
-65 to +125 |
°C |
|
TA |
Operating temperature |
-40 to +85 |
°C |
|
Ts |
Max. Soldering Temperature (10 sec) |
260 |
°C |
|
TJ |
Junction Temperature |
150 |
°C |
|
TDV |
Static Discharge Voltage (As per JEDEC STD22- A114-B) |
2 |
KV |
| Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability. | |||
P2042A Features
·FCC approved method of EMI attenuation.
·Provides up to 15dB of EMI suppression.
·Generates a low EMI spread spectrum clock of the input frequency.
·Input frequency range: 30MHz to 110MHz.
·Optimized for 32.5MHz, 54MHz, 65MHz and 108MHz pixel clock frequencies.
·Internal loop filter minimizes external components and board space.
·Eight selectable high spread ranges up to ± 1.9%.
·SSON# control pin for spread spectrum enable and disable options.
·Low cycle-to-cycle jitter.
·3.3V ± 0.3V operating range.
·Low power CMOS design.
·Supports most mobile graphic accelerator and LCD timing controller specifications.
·Available in 8-pin SOIC and TSSOP Packages.
·Provides up to 15dB of EMI suppression.
·Generates a low EMI spread spectrum clock of the input frequency.
·Input frequency range: 30MHz to 110MHz.
·Optimized for 32.5MHz, 54MHz, 65MHz and 108MHz pixel clock frequencies.
·Internal loop filter minimizes external components and board space.
·Eight selectable high spread ranges up to ± 1.9%.
·SSON# control pin for spread spectrum enable and disable options.
·Low cycle-to-cycle jitter.
·3.3V ± 0.3V operating range.
·Low power CMOS design.
·Supports most mobile graphic accelerator and LCD timing controller specifications.
·Available in 8-pin SOIC and TSSOP Packages.
P2042A Typical Application
The P2042A is targeted towards digital flat panel applications for notebook PCs, palm-size PCs, office automation equipments and LCD monitors.
P2042A Connection Diagram
P2042A
PDF/DataSheet Download
- Datasheet: P2042A
- File Size: 361704 KB
- Manufacturer: ALSC [Alliance Semiconductor Corporation]
- Click here to Download
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