KEC KFM220M Datasheet
SAW FILTER
KFM220M
TECHNICAL DATA
Band pass filter for Korean PCS IF stage.
ᴌLow Insertion Loss.
ᴌBalanced or Unbalanced operation possible.
ᴌSource impedance : 50ή single and matching circuit.
ᴌLoad impedance : 500ή balanced and matching circuit.
MAXIMUM RATING
ITEM SYMBOL RATING UNIT
Input Signal Level
DC Permissive Voltage
Operating Temperature Range
Storage Temperature Range
MARKING
IS
max
V
DC
T
opr
T
stg
10 dBm
0 V
-30ᴕ+80 ᴱ
-40ᴕ+85
ᴱ
SPECIFICATIONS FOR SAW FILTER
A
B
DIM MILLIMETERS
C
H
D
89
1
2
G
10
11
12
0.5 INDEX MARK
6
7
5
E
3
4
F
A
B
CG2.00MAX
D
E
F
H
SC-57
_
+
5.00 0.15
_
7.00 0.15
+
0.60
2.54
1.00
0.67
1.27
M220
K
Lot No.
ELECTRICAL CHARACTERISTICS
ITEMS SYMBOL MIN. TYP. MAX. UNIT
Nominal Center Frequency fo - 220.38 - MHz
Insertion Loss IL - 8.0 9.5 dB
5 dB Lower Frequency - 219. 67 219.75 MHz
5 dB Upper Frequency - 221. 01 221. 14 - MHz
33 dB Lower Frequency - 219.13 219.26 - MHz
33 dB Upper Frequency - - 221.57 221.63 MHz
Attenuation at 219.13MHz *
Attenuation at 221.63MHz * 35 39.8 - dB
IL
Attenuation at 218.33MHz - 47 - dB
STOP
Attenuation at 222.43MHz - 46 - dB
Ripple over the foᴦ0.300MHz
Phase Linearity at foᴦ0.615MHz
Arip - 0.8 1.2
PL - 1.2 3.5 deg rms
Ultimate Rejection UR - 50 dB
35 40 - dB
dB
(P-P)
Source/Load Impedance ** - -
50ή/50ή
50ή/500ή
-
ή
note) "*" : Specified at 25ᴱ
"**" : Can be used 50ή to 1ὶ with degradation in Insertion Loss.
2001. 12. 14 1/3
Revision No : 1
TEST CIRCUIT
Matching Circuit (50 ohm single ended source / 50 ohm single ended load)
R
S
50 Ohm
E
S
Circular Index Mark
L
1
C
1
KFM220M
2
1
12
11
10
8
9
3
4
5
6
L
2
R
L
50 Ohm
C
7
1
L1=100nH (Q1>60) , C1=36pF.
=100nH (Q2>60) , C2=36pF.
L
2
Matching Circuit (50 ohm single ended source / 500 ohm balanced load)
Circular Index Mark
2
3
1
12
L
1
R
S
11
10
7
8
9
50 Ohm
C
1
E
S
500 Ohm
C
2
4
5
6
L
2
1 : 10
R
L
500 Ohm
C
3
L1=100nH (Q1>60) , C1=36pF.
=100nH (Q2>60) , C2=2.4pF C3=2.4pF.
L
2
2/32001. 12. 14 Revision No : 1
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