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810001DK-21T Datasheet PDF : 19 Pages
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FemtoClock™ Dual VCXO Video PLL
ICS810001-21
DATA SHEET
General Description
The ICS810001-21 is a PLL based synchronous clock
ICS
generator that is optimized for digital video clock jitter
HiPerClockS™ attenuation and frequency translation. The device
contains two internal frequency multiplication stages
that are cascaded in series. The first stage is a VCXO
PLL that is optimized to provide reference clock jitter attenuation,
and to support the complex PLL multiplication ratios needed for
video rate conversion. The second stage is a FemtoClock™
frequency multiplier that provides the low jitter, high frequency video
output clock.
Preset multiplication ratios are selected from internal lookup tables
using device input selection pins. The multiplication ratios are
optimized to support most common video rates used in professional
video system applications. The VCXO requires the use of an
external, inexpensive pullable crystal. Two crystal connections are
provided (pin selectable) so that both 60 and 59.94 base frame rates
can be supported. The VCXO requires external passive loop filter
components which are used to set the PLL loop bandwidth and
damping characteristics.
Features
• Jitter attenuation and frequency translation of video clock signals
• Supports SMPTE 292M, ITU-R Rec. 601/656 and
MPEG-transport clocks
• Support of High-Definition (HD) and Standard-Definition (SD)
pixel rates
• Dual VCXO-PLL supports both 60 and 59.94Hz base frame rates
in one device
• Supports both 1000/1001 and 1001/1000 rate conversions
• Dual PLL mode for high-frequency clock generation (36MHz to
148.5MHz)
• VCXO-PLL mode for low-frequency clock generation (27MHz and
26.973MHz)
• One LVCMOS/LVTTL clock output
• Two selectable LVCMOS/LVTTL clock inputs
• LVCMOS/LVTTL compatible control signals
• RMS phase jitter @148.3516MHz, (12kHz - 20MHz):
1.089ps (typical)
• 3.3V supply voltage
• 0°C to 70°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
Supported Input Frequencies
fVCXO = 27MHz
27.0000MHz
fVCXO = 26.973MHz
26.9730MHz
27.0270MHz
27.0000MHz
74.1758MHz
74.1016MHz
74.3243MHz
74.2499MHz
74.2500MHz
74.1758MHz
27.0270MHz
27.0000MHz
26.9730MHz
26.9461MHz
74.1758MHz
74.1016kHz
45.0000kHz
44.9550kHz
33.7500kHz
33.7163kHz
15.6250kHz
15.6094kHz
15.7343kHz
15.7185kHz
28.1250kHz
28.0969kHz
Supported Output Frequencies
fVCXO = 27MHz
148.5000MHz
fVCXO = 26.973MHz
148.3515MHz
74.2500MHz
74.1758MHz
49.5000MHz
49.4505MHz
33.0000MHz
32.9670MHz
162.0000MHz
161.8380MHz
81.0000MHz
80.9190MHz
54.0000MHz
53.9460MHz
36.0000MHz
35.9640MHz
27.0000MHz
26.9730MHz
ICS810001DK-21 REVISION B APRIL 13, 2010
1
©2010 Integrated Device Technology, Inc.
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