Spe c ify
Ce ra m ic Filt e r LTW3 3 S e rie s
4 5 0 k Hz & 4 5 5 k Hz
11.3
Pin Conne c tions
7
2.9 2.9 2.6
1 = Input
4
3
2
1
2 = Ground
3 = Ground
4 = Ground
5 = Output
4.3
5
33-455D
2.0
To take the best advantage of the safety feature of ceramic filters, connect output to anIF amplifier through a DC cut capacitor.
Avoid directly applying DC to output end of ceramic filters (Between 5 & 2,3,4)
AP P LICATIONS
FEATURES
Com m unic a tions Equipm e nt
High Se le c tivity
Low Cost
Wide Ra nge of ba ndwidths Ava ila ble
Industry Sta nda rd Outline
S P E C I F I C ATI O N
Insertion
Pass Band
6 dB
Ba ndwidth
(kHz Min)
+/-15.0
+/-12.5
+/-10.0
+/- 7.5
+/- 6.0
+/- 4.5
+/- 3.0
+/- 2.0
+/- 3.0
40 dB
Stopba nd
Pa rt
Numb er
LTW33-455B
LTW33-455C
LTW33-455D
LTW33-455E
LTW33-455F
LTW33-455G
LTW33-455H
LTW33-455I
LTW33-455HT
Centre
Fr e q (M H z )
455 +/ -2.0
455 +/ -2.0
455 +/ -1.5
Loss
Ripple
Ba ndwidth
(kHz Min)
+/ -30.0
+/ -24.0
+/ -20.0
+/-15.0
+/-12.5
+/-10.0
+/- 9.0
+/- 7.5
+/- 9.0
Att. +/ -100kHz
Input/Output
Impedence ( )
1500
(dB Ma x)
(dB Ma x)
(d B M in )
35
4
4
4
2
2
2
2
2
2
2
2
2
35
35
35
35
35
35
35
60
1500
1500
1500
2000
2000
2000
2000
2000
F R E Q U 4E5N5 +C/ -1Y.5 C H A R 66A C T E R I S T I C S
455 +/ -1.5
455 +/ -1.5
455 +/ -1.0
455 +/ -1.0
455 +/ -1.0
6
6
6
6
Fre que nc y Cha ra c te ristic s
Te st Circ uit
1
5
R1
LTW
0
1 0
2 0
3 0
4 0
5 0
6 0
2
4
LTW33-455B
LTW33-455D
LTW33-455H
3
Rg
R2
C
RF
V.M
S.S.G
400
410
420
430
440
450
460
470
480
490
500
Fre q (kHz)
Rg+ R1+ R2= input/Output Im pe de nc e
C= 10pF (Inc luding stra ys a nd input/output
c a pa c ita nc e of RF Voltm e te r
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