810001-21
FemtoClock™ Dual VCXO Video PLL
Data Sheet
General Description
Features
The 810001-21 is a PLL based synchronous clock generator that is
optimized for digital video clock jitter 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.
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Jitter attenuation and frequency translation of video clock signals
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Support of High-Definition (HD) and Standard-Definition (SD)
pixel rates
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Dual VCXO-PLL supports both 60 and 59.94Hz base frame rates
in one device
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Supports both 1000/1001 and 1001/1000 rate conversions
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VCXO-PLL mode for low-frequency clock generation (27MHz and
26.973MHz)
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One LVCMOS/LVTTL clock output
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3.3V supply voltage
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.
Supported Input Frequencies
Supports SMPTE 292M, ITU-R Rec. 601/656 and
MPEG-transport clocks
Dual PLL mode for high-frequency clock generation (36MHz to
148.5MHz)
Two selectable LVCMOS/LVTTL clock inputs
LVCMOS/LVTTL compatible control signals
RMS phase jitter @148.3516MHz, (12kHz - 20MHz):
1.089ps (typical)
0°C to 70°C ambient operating temperature
Available in lead-free (RoHS 6) packages
Supported Output Frequencies
fVCXO = 27MHz
fVCXO = 26.973MHz
fVCXO = 27MHz
fVCXO = 26.973MHz
27.0000MHz
26.9730MHz
148.5000MHz
148.3515MHz
27.0270MHz
27.0000MHz
74.2500MHz
74.1758MHz
74.1758MHz
74.1016MHz
49.5000MHz
49.4505MHz
74.3243MHz
74.2499MHz
33.0000MHz
32.9670MHz
74.2500MHz
74.1758MHz
162.0000MHz
161.8380MHz
27.0270MHz
27.0000MHz
81.0000MHz
80.9190MHz
26.9730MHz
26.9461MHz
54.0000MHz
53.9460MHz
74.1758MHz
74.1016kHz
36.0000MHz
35.9640MHz
45.0000kHz
44.9550kHz
27.0000MHz
26.9730MHz
33.7500kHz
33.7163kHz
15.6250kHz
15.6094kHz
15.7343kHz
15.7185kHz
28.1250kHz
28.0969kHz
©2016 Integrated Device Technology, Inc
1
Revision B March 3, 2016
