L2042A

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 75 MHz. ·Optimized for 32.5MHz, 54MHz, and 65MHz. ·Internal loop filter minimizes external components and ...

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L2042A Picture
SeekIC No. : 004388980 Detail

L2042A: 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 75 MHz...

floor Price/Ceiling Price

Part Number:
L2042A
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: 2024/11/24

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Product Details

Description



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 75 MHz.
·Optimized for 32.5MHz, 54MHz, and 65MHz.
·Internal loop filter minimizes external components and board space.
·Selectable spread deviation.
·SSON# control pin for spread spectrum enable and disable options.
·Low cycle-to-cycle jitter.
·2.5V or 3.3V operating voltage range.
·TTL or CMOS compatible outputs.
·Ultra-low power CMOS design.
·Supports most mobile graphic accelerator and  LCD timing controller specifications.
· Available in 8-pin SOIC and TSSOP. 



Application

The L2042A is targeted  towards digital flat panel  applications for Notebook PCs, Palm-size PCs, office  automation equipment, and LCD monitors.  
 
 




Pinout

  Connection Diagram


Specifications

Symbol
Parameter
Rating
Unit
VDD ,V IN
Voltage on any pin with respect to GND
-0.5 to + 7.0
V
TSTG
Storage temperature
-65 to +125
TA
Operating temperature
0 to 70
Note: These are stress ratings only and functional operation is not implied. Exposure to absolute maximum
ratings for extended periods may affect device reliability.



Description

The L2042A is a versatile spread spectrum frequency modulator designed specifically for digital falt panel  applications. The L2042A reduces electromagnetic  interference (EMI) at the clock source, allowing system  wide reduction of EMI of  down stream clock and data  dependent signals. The L2042A 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 L2042A uses the most efficient and optimized  modulation profile approved by the FCC and is  implemented in a proprietary all digital method.  
 
The L2042A modulates the output of a single PLL in  order to !°spread!± the bandwidth of a synthesized clock nd 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 !(R)sprea pectrum clock generation!.




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