LTU455B2 Datasheet, PDF (1/2 Pages) AEL Crystals Ltd – Ceramic Filter 455kHz or 450kHz

Specify
Ceramic Filter LTU Series
455kHz or 450kHz
8
7
8.2
21
4.3
3
2.7
Pin Connections
1 = Input
2 = Ground
3 = Output
4
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)
FEATURES
APPLICATIONS
High Selectivity
Low Cost
Wide Range of bandwidths Available
Industry Standard Outline & Pinout
Communications Equipment
SPECIFICATION
Insertion Pass Band
6 dB
Pa rt
Centre
Loss
Ri p p le
Ba n d w i d th
Numb er
Freq (M Hz) (dB Max) (dB Max) (kHz Min)
LTU455B2 455 +/ -2.0
4
2
+ / - 15 .0
LTU455C2 455 +/ -2.0
4
2
+ / - 12 .5
LTU455D2 455 +/ -1.5
4
2
+ / - 10 .0
LTU455E2
455 +/ -1.5
6
2
+ / - 7 .5
FREQUENCY CHARACTERISTICS
LTU455F2
455 +/ -1.5
6
2
+ / - 6 .0
LTU455G2 455 +/ -1.5
6
2
+ / - 4 .5
LTU455H2 455 +/ -1.0
6
2
+ / - 3 .0
LTU455I2
455 +/ -1.0
6
2
+ / - 2 .0
LTU455HT 455 +/ -1.0
6
2
+ / - 3 .0
40 dB
Ba n d w i d th
(kHz Min)
+/ -30.0
+/ -24.0
+/ -20.0
+ / - 15 .0
+ / - 12 .5
+ / - 10 .0
+ / - 9 .0
+ / - 7 .5
+ / - 9 .0
Frequency Characteristics
Test Circuit
St op b a n d
Att. + / -100kHz
(dB M in )
27
27
27
27
27
25
25
25
35
1
3
0
R1
LTU
10
LTU 455B2
2
LTU 455E2
LTU 455H2
20
Input/Output
Impedence ( )
1500
1500
1500
1500
2000
2000
2000
2000
2000
30
Rg
R2
C
RF
40
V.M
S.S.G
50
60
400 410 420 430 440 450 460 470 480 490 500
Freq (kHz)
Rg+R1+R2=input/Output Impedence
C=10pF (Including strays and input/output
capacitance of RF Voltmeter
www.aelcrystals.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
Order Hotline [phone]
www.aelcrystals.co.uk
[e-mail]
44