Data Sheet

VFJA430
Jitter Attenuator with 3 Input Frequency
Selections plus Free Run Mode
RoHS Status
Features
¾
¾
¾
¾
Free Run Mode
8 KHz to 200 MHz Input Frequency Range
Ultra Low Jitter and Phase Noise: -152 dBc/Hz @ 100KHz
Low Power: < 150mW typical
Applications
¾
¾
Synchronous Ethernet
Wireless Infrastructure
Description
The VFJA430 is a Jitter Attenuator that provides two LVCMOS outputs at the specified frequency. Two select
inputs [S1,S0] allow the user to select 1 of 3 preset input frequencies or Free Run Mode. In Free Run mode the
device outputs the nominal frequency and is not locked to the input reference frequency. Operating with a +3.3
volt power supply the device typically consumes 150 mW. The VFJA430 is available in a 19.5mm x 15.5 mm
surface mount package.
Filter
Fout 1
R-Divider
F in
VCXO
PFD
Fout 2
S0
S1
N- Divider
Vcc
Vccp
.1 uF
Block Diagram
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevE0209
1
VFJA430
Jitter Attenuator with 3 Input Frequency
Selections plus Free Run Mode
Absolute Maximum Ratings
Parameter
Supply Break
Down Voltage
Storage
Temperature
Symbol
Condition
Min
Typ
Max
Unit
Vcc
-0.5
5.5
V
Ts
-55
+105°
°C
Note
Electrical Specifications
Parameter
Output
Frequency
Range
Input
Frequency
Range
Input Level
Output Level
Logic “1”
Output Level
Logic “0”
Phase Jitter
SSB Phase
Noise
APR
Free-run
Accuracy
Modulation
BW
Duty Cycle
Rise / Fall
Time
Start up time
Supply
Voltage
Input Current
Operating
Temperature
Range
Notes:
1.
2.
Symbo
l
Condition
Min
Fout
Max
25
Fin
Vin
Typ
AC coupled internally
Unit
MHz
.008
200
MHz
See Table 1
1.0
3.3
V p-p
Note 2
Voh
IOH = 8 mA
Vcc-.6
Vcc
V
Vol
IOL = 8 mA
0.0
.3
V
Фn
12KHz to 20MHz
100Hz
1KHz
10KHz
100KHz
0.20
-102
-132
-147
-152
ps(rms)
dBc/Hz
± 32
±50
10
Tr/Tf
45
50
2
3.15
Icc
3.30
45
Ta
-40°
ppm
Hz
20% to 80%
Vcc
@ 125 MHz
ppm
±30
-40ºC to +85ºC
@ 50%
Note
55
%
0.6
ns
10
ms
3.45
V
55
mA
+85°
°C
Note 1
Consult factory for other bandwidth options.
For 2MHz > Fin < 20 MHz , ensure SR > 50 V/µs; For 8KHz > Fin < 2MHz, ensure Slew Rate > 2.5V / ns
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevE0209
2
VFJA430
Jitter Attenuator with 3 Input Frequency
Selections plus Free Run Mode
How to Order
(See Table 1)
Suffix
VFJA430
Table 1
P/N
suffix
-001
S1:S0
Input Frequency
(MHz)
00
01
10
11
Free-run Mode
19.44
25.0
125.0
Output
Frequency
(MHz)
125.0
125.0
125.0
125.0
P/N
suffix
-002
S1:S0
Input Frequency
(MHz)
Output Frequency
(MHz)
00
01
10
11
Free-run Mode
1.544
2.048
25.00
25.00
25.00
25.00
25.00
Once Input and Output frequencies have been submitted and approved, the Factory will assign a part number.
Environmental and Mechanical
Parameter
Mechanical Shock
Thermal Shock
Specification
Per MIL-STD-202, Method 213, Condition E
Per MIL-STD-883, Method 1011, Condition A
Vibration
Per MIL-STD-883, Method 2007, Condition A
Soldering Conditions
260°C for 10s max
Hermetic Seal
-8
Leak rate less than 5x10 atm.cc/s of helium (crystal only)
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevE0209
3
VFJA430
Jitter Attenuator with 3 Input Frequency
Selections plus Free Run Mode
Mechanical Outline
Pin #
Description
1
Fin
2
DNC
3
Vccp*
4
Vcc
5
S1
6
DNC
7
S0
8
Gnd
9
N/C
10
N/C
11
Fout 2
12
Fout 1
13
N/C
14
Gnd
* Connect pin #3 to pin #4 and
add .1 uF
Connection Diagram
Vcc = 3.3V
C1
.1 uF
3 4
Fin
1
12
Fout 1
S1
S0
5
7
11
Fout 2
8 14
Gnd
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevE0209
4
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