75-068622-22S Amphenol, 75-068622-22S Datasheet - Page 285
![no-image](/images/manufacturer_photos/0/0/49/amphenol_sml.jpg)
75-068622-22S
Manufacturer Part Number
75-068622-22S
Description
Circular MIL / Spec Connectors 4P 97 Series MIL-DTL-5015
Manufacturer
Amphenol
Series
97 Seriesr
Datasheet
1.M3902932-260.pdf
(436 pages)
Specifications of 75-068622-22S
Mil Type
MIL-DTL-5015
Product Type
Connectors
Contact Style
Socket (Female)
Shell Style
Plug
Shell Size
22
Number Of Contacts
4
Insert Arrangement
22-22
Mounting Style
Panel
Termination Style
Crimp
Contact Type
Socket
Shell Plating
Chromate over Cadmium, Olive Drab
Contact Plating
Silver
Voltage Rating
700 V
Body Material
Aluminum
Mounting Angle
Straight
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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The following formula and example are offered in order to
determine the expected filter performance in an impedance
system other than 50 ohms.
With the attenuation expressed in 50 ohms and the transfer
impedance curve shown in Figure 1 below, a designer can relate
the expressed attenuation to the input and output impedance of
his circuit.
Example:
Formula (Taken from Figure 1):
Amphenol
(1)
(2)
(3)
1.4 x 10 ohm = transfer impedance
for 65 dB in a 50 ohm system
140
120
100
80
60
40
20
10
0
Noise is 40dB above specification level at 100 MHz
Input and output impedance are 10 and 100 ohms
respectively
Amphenol
attenuation at 100 MHz and +25°C
-4
Aerospace
®
VHF 7000 pf filter has a 65 dB minimum
10
Attenuation vs Transfer Impedance in 50 Ohm System
-3
Impedance Matching Formula
(Your System to a 50 Ohm System)
Transfer Impedance - Z
10
-2
Figure 1
Atten (dB) = 20 log
Atten = filter performance in a system other than 50 ohms
Atten (dB) = 20 log
Attenuation = 56.3dB
In this case, the 7000 pf VHF filter will give 56.3 dB which is
16.3dB below the desired reduction in noise (40dB) as stated
in the above problem.
Z
Z
Z
S
L
12
= source impedance
= load impedance
10
= transfer impedance
12
-1
Ohms
10
10
1 +
1 +
10
1.4 x 10
Z
-0
12
(Z
Z
S
S
Z
10(100)
+ Z
L
–2
(10 + 100)
L
)
10
1
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