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ASM3P2531A

Features: FCC approved method of EMI attenuation.Generates a low EMI spread spectrum of the input clock frequency.Optimized for input frequency range between 35MHz 55MHz.Internal loop filter minimizes external components and board space.Frequency Deviation: ±1.65%.Low inherent cycle-to-cycle jitt...

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SeekIC No. : 004289008 Detail

ASM3P2531A: Features: FCC approved method of EMI attenuation.Generates a low EMI spread spectrum of the input clock frequency.Optimized for input frequency range between 35MHz 55MHz.Internal loop filter minimi...

ASM3P2531A Data Sheet

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Part Number:
ASM3P2531A
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

FCC approved method of EMI attenuation.
Generates a low EMI spread spectrum of the input clock frequency.
Optimized for input frequency range between 35MHz 55MHz.
Internal loop filter minimizes external components and board space.
Frequency Deviation: ±1.65%.
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.
Available in 8-pin SOIC and TSSOP.


Application

The ASM3P2531A is targeted toward the notebook VGA chip and other displays using an LVDS interface, PC peripheral devices, and embedded systems


Specifications

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



Description

The ASM3P2531A 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 systemwide 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 ASM3P2531A 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 ASM3P2531A uses the most efficient and optimized modulation profile approved by the FCC and is implemented by using a proprietary all-digital method.




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