IDT
/ ICS
LVDS 400MHZ FREQUENCY SYNTHESIZER 4 ICS844801AGI-24 REV A JANUARY 16, 2008
ICS844801I-24
FEMTOCLOCKS™ CRYSTAL-TO-LVDS 400MHZ FREQUENCY SYNTHESIZER PRELIMINARY
TABLE 4. CRYSTAL CHARACTERISTICS
TABLE 5A. AC CHARACTERISTICS, V
DD
= V
DDA
= 3.3V±5%, TA = -40°C TO 85°C
TABLE 5B. AC CHARACTERISTICS, V
DD
= V
DDA
= 2.5V±5%, TA = -40°C TO 85°C
TABLE 3D. LVDS DC CHARACTERISTICS, V
DD
= V
DDA
= 2.5V±5%, TA = -40°C TO 85°C
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f
TUO
ycneuqerFtuptuO
5.2715.202zHM
543504zHM
t
)Ø(tij
;)modnaR(rettiJesahPSMR
1ETON
:egnaRnoitargetnI@zHM002
zHM02-zHk21
26.0sp
:egnaRnoitargetnI@zHM004
zHM02-zHk21
75.0sp
t
R
t/
F
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lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
f
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ycneuqerFtuptuO
5.2715.202zHM
543504zHM
t
)Ø(tij
;)modnaR(rettiJesahPSMR
1ETON
:egnaRnoitargetnI@zHM002
zHM02-zHk21
46.0sp
:egnaRnoitargetnI@zHM004
zHM02-zHk21
75.0sp
t
R
t/
F
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lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
DO
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V
DO
V
DO
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IDT
/ ICS
LVDS 400MHZ FREQUENCY SYNTHESIZER 5 ICS844801AGI-24 REV A JANUARY 16, 2008
ICS844801I-24
FEMTOCLOCKS™ CRYSTAL-TO-LVDS 400MHZ FREQUENCY SYNTHESIZER PRELIMINARY
TYPICAL PHASE NOISE AT 400MHZ @ 3.3V
400MHz
RMS Phase Noise Jitter
12kHz to 20MHz = 0.57ps (typical)
OFFSET FREQUENCY (HZ)
dBc
Hz
NOISE POWER
1k 10k 100k 1M 10M 100M
ä
ä
ä
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
Phase Noise Result by adding
a SONET Filter to raw data
Raw Phase Noise Data
SONET Filter
IDT
/ ICS
LVDS 400MHZ FREQUENCY SYNTHESIZER 6 ICS844801AGI-24 REV A JANUARY 16, 2008
ICS844801I-24
FEMTOCLOCKS™ CRYSTAL-TO-LVDS 400MHZ FREQUENCY SYNTHESIZER PRELIMINARY
PARAMETER MEASUREMENT INFORMATION
OUTPUT RISE/FALL TIME
OFFSET VOLTAGE SETUP
LVDS 3.3V OUTPUT LOAD AC TEST CIRCUIT
LVDS 2.5V OUTPUT LOAD AC TEST CIRCUIT
RMS PHASE JITTER OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
SCOPE
Qx
nQx
LVDS
3.3V±5%
POWER SUPPLY
+–
Float GND
Q
nQ
100
out
out
LVDS
DC Input
V
OD
/ V
OD
V
DD
out
out
LVDS
DC Input
V
OS
/ V
OS
V
DD
V
DD
V
DD
Clock
Outputs
20%
80%
80%
20%
t
R
t
F
V
SWING
DIFFERENTIAL OUTPUT VOLTAGE SETUP
SCOPE
Qx
nQx
LVDS
2.5V±5%
POWER SUPPLY
+–
Float GND
Phase Noise Mas
k
Offset Frequency
f
1
f
2
Phase Noise Plot
RMS Jitter = Area Under the Masked Phase Noise Plot
Noise Power
t
PW
t
PERIOD
t
PW
t
PERIOD
odc = x 100%

844801AGI-24LF

Mfr. #:
Manufacturer:
Description:
Clock Synthesizer / Jitter Cleaner 1 LVDS OUT SYNTHESIZER
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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