CDCS503 Clock Buffer / Clock Multiplier with optional SSC | TI.com

CDCS503 (ACTIVE)

Clock Buffer / Clock Multiplier with optional SSC

Clock Buffer / Clock Multiplier with optional SSC - CDCS503
Datasheet
 

Recommended alternative parts

  • CDCS502  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   CDCS502 is a clock buffer that takes Xtal input
  • CDCS501  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   CDCS501 is a clock buffer with SSC that has no multiplication function
  • CDCE913  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   CDCE913 is a full featured device with frequency synthesis, EEPROM and 3 fanouts
  • CDCE949  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   CDCE949 is full featured 4-PLL device with frequency synthesis, EEPROM and 9 fanouts

Description

The CDCS503 is a spread spectrum capable, LVCMOS Input Clock Buffer with selectable frequency multiplication.

It shares major functionality with the CDCS502 but utilizes a LVCMOS input stage instead of the crystal input stage of the CDCS502. Also an Output Enable pin has been added to the CDCS503.

The device accepts a 3.3V LVCMOS signal at the input.

The input signal is processed by a PLL, whose output frequency is either equal to the input frequency or multiplied by the factor of 4.

The PLL is also able to spread the clock signal by ±0%, ±0.5%, ±1% or ±2% centered around the output clock frequency with a triangular modulation.

By this, the device can generate output frequencies between 8MHz and 108MHz with or without SSC.

A separate control pin can be used to enable or disable the output. The CDCS503 operates in 3.3V environment.

It is characterized for operation from –40°C to 85°C, and available in an 8-pin TSSOP package.

Features

  • Part of a Family of Easy to use Clock Generator Devices
    With Optional SSC
  • Clock Multiplier With Selectable Output Frequency and
    Selectable SSC
  • SSC Controllable via 2 External Pins
    • ±0%, ±0.5%, ±1%, ±2% Center Spread
  • Frequency Multiplication Selectable Between x1 or x4
    With One External Control Pin
  • Output Disable via Control Pin
  • Single 3.3V Device Power Supply
  • Wide Temperature Range –40°C to 85°C
  • Low Space Consumption by 8 Pin TSSOP Package
  • APPLICATIONS
    • Consumer and Industrial Applications requiring
      EMI reduction through Spread Spectrum Clocking
      and/or Clock Multiplication

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Parametrics Compare all products in Spread-spectrum clocks

 
Input level
Output level
Features
Rating
Operating temperature range (C)
Approx. price (US$)
Divider ratio
Function
Jitter-peak to peak(p-p) or cycle to cycle(c-c)
Number of outputs
Output frequency (Max) (MHz)
Output frequency (Min) (MHz)
Output skew (ps)
Programmability
CDCS503 CDCS501 CDCS502 CDCS503-Q1
LVCMOS     LVCMOS     Crystal     LVCMOS    
LVCMOS     LVCMOS     LVCMOS     LVCMOS    
Spread Spectrum Clocking (SSC)     Spread Spectrum Clocking (SSC)     Multiplier/Divider
Spread Spectrum Clocking (SSC)    
Spread Spectrum Clocking (SSC)    
Catalog     Catalog     Catalog     Automotive    
-40 to 85     -40 to 85     -40 to 85     -40 to 105    
0.50 | 1ku     0.45 | 1ku     0.95 | 1ku     0.60 | 1ku    
Fixed     Fixed     Fixed     Fixed    
Spread Spectrum Clock     Spread Spectrum Clock     Spread Spectrum Clock     Spread Spectrum Clock    
60 ps     60 ps     60 ps     60 ps    
1     1     1     1    
108     108     108     108    
8     8     8     8    
150     150     150     150    
Pin programmable     Pin programmable     Pin programmable     Pin programmable