ZL30406
SONET/SDH Clock Multiplier PLL
Data Sheet
Features
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Meets jitter requirements of Telcordia GR-253-
CORE for OC-48, OC-12, and OC-3 rates
Meets jitter requirements of ITU-T G.813 for STM-
16, STM-4 and STM-1 rates
Provides four LVPECL differential output clocks at
77.76 MHz
Provides a CML differential clock programmable
to 19.44 MHz, 38.88 MHz, 77.76 MHz and
155.52 MHz
Provides a single-ended CMOS clock at
19.44 MHz
Provides enable/disable control of output clocks
Accepts a CMOS reference at 19.44 MHz
3.3 V supply
Ordering Information
ZL30406QGC
64 Pin TQFP
ZL30406QGC1 64 Pin TQFP*
*Pb Free Matte Tin
-40°C to +85°C
Trays
Trays
February 2005
Description
The ZL30406 is an analog phase-locked loop (APLL)
designed to provide rate conversion and jitter
attenuation for SDH (Synchronous Digital Hierarchy)
and SONET (Synchronous Optical Network)
networking equipment. The ZL30406 generates very
low jitter clocks that meet the jitter requirements of
Telcordia GR-253-CORE OC-48, OC-12, OC-3, OC-1
rates and ITU-T G.813 STM-16, STM-4 and STM-1
rates.
The ZL30406 accepts a CMOS compatible reference
at 19.44 MHz and generates four LVPECL differential
output clocks at 77.76 MHz, a CML differential
clock programmable to 19.44 MHz, 38.88 MHz,
77.76 MHz and 155.52 MHz and a single-ended
CMOS clock at 19.44 MHz. The output clocks can
be individually enabled or disabled.
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•
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Applications
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•
SONET/SDH line cards
Network Element timing cards
LPF
C77oEN-A
C77oEN-B
OC-CLKoEN
C77o
,
C155o
C19o, C38o,
CML-P/N outputs
OC-CLKoP/N
C19i
Frequency
& Phase
Detector
19.44MHz
BIAS
Reference &
Bias circuit
Loop
Filter
Output
VCO
Interface
Circuit
C77oP/N-A
C77oP/N-B
C77oP/N-C
C77oP/N-D
C19o
VDD GND
VCC
FS1-2
C19oEN
C77oEN-C
C77oEN-D
15
Figure 1 - Functional Block Diagram
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2003-2005, Zarlink Semiconductor Inc. All Rights Reserved.
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