Spe c ify
Ce ra m ic Filt e r LTU S e rie s
4 5 5 k Hz o r 4 5 0 k Hz
8
7
Pin Conne c tions
2 1
4.3
8.2
1 = Input
3
2 = Ground
3 = Output
2.7
4
To ta ke the be st a dva nta ge of the sa fe ty fe a ture of c e ra mic filte rs, c onne c t output to a nIF a mplifie r through a DC c ut c a pa c itor.
Avoid dire c tly a pplying DC to output e nd of c e ra mic filte rs (Be twe e n 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 & Pinout
S P E C I F I C ATI O N
Inse rtion
Pass Band
6 dB
Ba n d wid th
(kHz Min)
+/-15 .0
+/-12 .5
+/-10 .0
40 dB
Ba n d wid th
(kHz Min)
+/ -30.0
+/ -24.0
+/ -20.0
+/-15 .0
+/-12 .5
+/-10 .0
+/- 9 .0
+/- 7 .5
+/- 9 .0
Stop b a n d
Pa rt
Numb e r
LTU455B2
LTU455C2
LTU455D2
Ce ntre
Fr e q (M H z )
455 +/ -2.0
455 +/ -2.0
455 +/ -1.5
Loss
Rip p le
Att. + / -100kHz
Input/Output
Impe de nce ( )
1500
(d B Ma x)
(d B Ma x)
(d B M in )
27
4
4
4
2
2
2
2
2
2
2
2
2
27
27
27
27
25
25
25
35
1500
1500
1500
2000
2000
2000
2000
2000
LTU455FE2R E Q4U55E+N/ -1C.5Y C H A66R A C T E R I S T I C+S/- 7 .5
LTU455F2
LTU455G2
LTU455H2
LTU455I2
LTU455HT
455 +/ -1.5
455 +/ -1.5
455 +/ -1.0
455 +/ -1.0
455 +/ -1.0
+/- 6 .0
+/- 4 .5
+/- 3 .0
+/- 2 .0
+/- 3 .0
6
6
6
6
Fre que nc y Cha ra c te ristic s
Te st Circ uit
1
3
0
1 0
2 0
3 0
4 0
5 0
6 0
R1
LTU
LTU 455B2
LTU 455E2
LTU 455H2
2
Rg
R2
C
RF
V.M
S.S.G
400
410
420
430
440
450
460
470
480
490
500
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
Fre q (kHz)
www.aelcrys tals .co.uk
q u a r t z b a s e d f r e q u e n c y c o n t r o l c o m p o n e n t s
www.a e lc rysta ls.c o.uk
sa le s@a e lc rysta ls.c o.uk
Orde r Hotline + 44 1293 524245
44
AEL [ AEL CRYSTALS LTD ]
