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P2681A

Features: ·FCC approved method of EMI attenuation·Provides up to 15 dB of EMI suppression·Generates a 1 X or ½ X low EMI spread spectrum clock of the input frequency·Output frequency from 6MHz to 20MHz·Digital spread selections·Spreading ranges from +/-0.4% to +/-5.0%·Ultra low cycle-to-cyc...

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SeekIC No. : 004439103 Detail

P2681A: Features: ·FCC approved method of EMI attenuation·Provides up to 15 dB of EMI suppression·Generates a 1 X or ½ X low EMI spread spectrum clock of the input frequency·Output frequency from 6MH...

P2681A Data Sheet

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Part Number:
P2681A
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/23

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Product Details

Description



Features:

·FCC approved method of EMI attenuation
·Provides up to 15 dB of EMI suppression
·Generates a 1 X or ½ X low EMI spread spectrum clock of the input frequency
·Output frequency from 6MHz to 20MHz
·Digital spread selections
·Spreading ranges from +/-0.4% to +/-5.0%
·Ultra low cycle-to-cycle jitter
·Zero-cycle slip
·3.3V and 5.0V operating voltage range
·10 mA output drives
·TTL or CMOS compatible outputs
·Ultra-low power CMOS design
·Available in 8 pin SOIC and TSSOP


Application

The P2681A is targeted towards MFP, xDSL, fax modem, set-top box, USB controller, DSC, and embedded systems.


Pinout

Connection Diagram


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 P2681A is a versatile spread spectrum frequency modulator designed specifically for digital camera and other digital video and imaging applications. The P2681A reduces electromagnetic interference (EMI) at the clock source, which provides system wide reduction of EMI of all clock dependent signals. The P2681A allows significant system cost savings by reducing the number of circuit board layers and shielding that are traditionally required to pass EMI regulations.

The P2681A uses the most efficient and optimized modulation profile approved by the FCC.

The P2681A 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".




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