PLL Clock Synthesizer
Low Voltage, Low Skew, 1.244GHz PLL Clock Synthesizer
843S06
DATA SHEET
GENERAL DESCRIPTION
The 843S06 is a low voltag...
Description
Low Voltage, Low Skew, 1.244GHz PLL Clock Synthesizer
843S06
DATA SHEET
GENERAL DESCRIPTION
The 843S06 is a low voltage, low skew 3.3V LVPECL Clock Synthesizer. The device targets clock distribution in SDH/SONET telecommunication systems but is well suited for a wide range of applications requiring high performance high-speed clock synthesis.
The device implements a fully integrated multiplying PLL including:
An on-chip analog voltage controlled oscillator (VCO) Phase-frequency detector Programmable frequency dividers (prescalers)
The loop filter is external in order to optimize the PLL for different applications.
As an option, the 843S06 may be operated with an external voltage controlled crystal oscillator for applications demanding a high-Q oscillator.
FEATURES
Six differential 3.3V LVPECL outputs
1,244.16/622.08MHz; 1,244.16/622.08MHz
622.08/311.04MHz; 311.04/155.52MHz
155.52/77.76MHz;
77.76/38.88MHz
Three selectable differential reference clock inputs Clock frequency range: 19MHz to 622MHz
REF_CLKx, nREF_CLKx pairs can accept the following differential input level: LVPECL
Intrinsic jitter: 0.017mUI @ 622MHz RMS
Output skew: 200ps (maximum)
Optional external VCXO possible
Simple external loop filter
Lock detect output signal
Full 3.3V operating supply
Low power operation 0.6W (typical)
-40°C to 85°C ambient operating temperature
Lead-free (RoHS 6) packaging
VCCA VCTL OCHP SEL5 SEL4 NLDET NLOCK SEL3 VCXO DCCAL VCPSEL2 VCC
PIN...
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