Sichuan Institute of Piezoelectric and Acoustooptic Technology
For PHS First IF Filters (SMD Package)
Electrical Characteristic:
SP 233
Unit
MHz
MHz
dB
dB
ns
Ω
°C
Characteristic
Center Frequency
3dB Bandwidth
Insertion Loss(at minimum loss point)
Stop Band Attenuation (from peak level)
at F
0
±0.6MHz
Group Delay Deviation(with F
0
±150kHz)
Input/Output Impedance
Package
Ambient Temperature
Input/Output Impedance(fig1):
Minimum
233.10
0.47
Typical
233.15
0.52
14.2
Maximum
233.20
14.6
18
200
300
50
SMD(19mmX6.5mm)
25
SMD Package(fig2):
Lp1=27nH,
Lp2=39nH
This may be changed according to PCB.
Frequency Characteristic(fig3):
233.15 M H z S A W F
-10
1.6
-20
1.5
-30
1.4
G roup D elay (us )
A m plitude(dB )
-40
-50
1.3
-60
1.2
-70
1.1
-80
-90
228.15 229.15 230.15 231.15 232.15 233.15 234.15 235.15 236.15 237.15 238.15
F requenc y (M H z )
1
232.4 232.55 232.7 232.85
233
233.15 233.3 233.45 233.6 233.75 233.9
F requenc y (M H z )
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