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844246DGILFT

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
ICS844246DI Data Sheet FEMTOCLOCK
®
CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER w/FANOUT BUFFER
ICS844246DGI REVISION A NOVEMBER 28, 2012 7 ©2012 Integrated Device Technology, Inc.
Typical Phase Noise at 125MHz
Gb Ethernet Filter
Phase Noise Result by adding a
Gb Ethernet filter to raw data
Raw Phase Noise Data
125MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.416ps (typical)
Offset Frequency (Hz)
Noise Power dBc
Hz
ICS844246DI Data Sheet FEMTOCLOCK
®
CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER w/FANOUT BUFFER
ICS844246DGI REVISION A NOVEMBER 28, 2012 8 ©2012 Integrated Device Technology, Inc.
Parameter Measurement Information
3.3V Core/3.3V LVDS Output Load AC Test Circuit
Output Skew
Output Rise/Fall Time
3.3V Core/2.5V LVDS Output Load AC Test Circuit
Output Duty Cycle/Pulse Width/Period
RMS Phase Jitter
SCOPE
Qx
nQx
3.3V±5%
POWER SUPPLY
+–
Float GND
V
DD,
V
DDA
V
DDO
tsk(o)
Qx
Qy
nQx
nQy
20%
80%
80%
20%
t
R
t
F
V
OD
nQ0:nQ5
Q0:Q5
Qx
nQx
Float GND
++
–
POWER
SUPPLY
SCOPE
2.5V±5%
3.3V±5%
V
DDO
V
DD
V
DDA
Q0:Q5
nQ0:nQ5
t
PW
t
PERIOD
t
PW
t
PERIOD
odc = x 100%
Phase Noise Mas
Offset Frequency
f
1
f
2
Phase Noise Plot
RMS Jitter = Area Under the Masked Phase Noise Plot
Noise Power
ICS844246DI Data Sheet FEMTOCLOCK
®
CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER w/FANOUT BUFFER
ICS844246DGI REVISION A NOVEMBER 28, 2012 9 ©2012 Integrated Device Technology, Inc.
Parameter Measurement Information, continued
Differential Output Voltage Setup
Offset Voltage Setup
100
out
out
DC Input
V
DD
LVDS
out
out
LVDS
DC Input
ä
V
OS
/Δ V
OS
V
DD
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

844246DGILFT

Mfr. #:
Buy 844246DGILFT
Manufacturer:
IDT
Description:
Clock Synthesizer / Jitter Cleaner FemtoClock LVDS Int Fanout Buffer
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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