KEC KF881FU Datasheet
2002. 10. 30 1/5
SAW FILTER
TECHNICAL DATA
KF881FU
SPECIFICATIONS FOR SAW FILTER
Revision No : 3
Band pass filters for TX of AMPS/TDMA/CDMA
High stability and reliability with good performance and no adjustment.
Wide and sharp pass band characteristics.
Low insertion loss and deep stop band attenuation for interference.
MAXIMUM RATINGS
ITEM SYMBOL RATING UNIT
Input Signal Level
IS
max
+15 dBm
DC Permissive Voltage
V
DC
5 V
Operating Temperature Range
T
opr
-30 +85
Storage Temperature Range
T
stg
-40 +85
ELECTRICAL CHARACTERISTICS (Ta=-30 to 85 )
ITEMS SYMBOL TEST CONDITION MIN.
TYP.(25 )
MAX. UNIT
Nominal Center Frequency fo - - 881.5 - MHz
Bandwidth
BW
3dB
-
fO12.5
- - MHz
Insertion Loss
IL
PASS
fO12.5MHz
- 3.0 3.5 dB
Ripple Level
A
RIP
fO12.5MHz
- 1.0 2.0 dB
Rejection Level
IL
STOP
DC 800MHz
25 30 -
dB
800 849MHz
33 38 -
914 939MHz
20 33 -
939 1049MHz
30 34 -
1049 2000MHz
25 30 -
Voltage Standing Wave Ratio VSWR
fO12.5MHz
- 1.9 2.2 -
Input/Output Impedance
ZI(ZO)
- -
50
- -
C
DIM MILLIMETERS
A
B
CG1.15 0.12
1.50 TYP.
D
0.60 TYP.
E
0.85 TYP.
F
1.20 TYP.
FUNCTION
PIN NO
1
3
GROUND
6
4
2
5
B
A
D
3
GG
4
5
2
1
E
6
F
SC-33
_
3.0 0.1
+
_
3.0 0.1
+
_
+
SIGNAL
SIGNAL
MARKING
K H N
Lot No.
2002. 10. 30 2/5
KF881FU
Revision No : 3
RS, RL: 50 (Internal Impedance of Source and Load)
R : 0
ZI(ZO)=RS(RL)+R
MEASUREMENT CIRCUIT
RS, RL: 50 (Internal Impedance of Source and Load)
R : 0
ZI(ZO)=RS(RL)+R
REFERENCE LEVEL TEST CIRCUIT
TEST CIRCUIT
Z
I
Z
O
R
S
SSG
RR
DET
R
L
Z
I
Z
O
SSG
RR
S
2 : INPUT 1 , 3 , 4 , 6 : GROUND 5 : OUTPUT
4
3
5
2
6
1
R
DET
R
L
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