Data Sheet 12 LVPECL/24 CMOS Output Clock
Generator with Integrated 1.6 GHz VCO
AD9520-4
FUNCTIONAL BLOCK DIAGRAM APPLICATIONS
Low jitter, low phase noise clock distribution
Clock generation and translation for SONET, 10Ge, 10GFC,
Synchronous Ethernet, OTU2/3/4
Forward error correction (G.710)
Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
High performance wireless transceivers
ATE and high performance instrumentation
Broadband infrastructures GENERAL DESCRIPTION
The AD9520-4 provides a multioutput clock distribution
function with subpicosecond jitter performance, along with an
on-chip PLL and VCO. The on-chip VCO tunes from 1.4 GHz to
1.8 GHz. An external 3.3 V/5 V VCO/VCXO of up to 2.4 GHz
can also be used.
1 1 CP REF1 REFIN REFIN CLK REF2 LF STATUS
MONITOR PLL OPTIONAL SWITCHOVER
AND MONITOR Low phase noise, phase-locked loop (PLL)
On-chip VCO tunes from 1.4 GHz to 1.8 GHz
Optional external 3.3 V/5 V VCO/VCXO to 2.4 GHz
1 differential or 2 single-ended reference inputs …