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參數(shù)資料
| 型號： | LPU455B-115T |
| 廠商： | ECS INC INTERNATIONAL |
| 英文描述： | 0.455 MHz, CERAMIC BPF |
| 封裝： | ROHS COMPLIANT PACKAGE-3 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 234K |
| 代理商： | LPU455B-115T |
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Center frequency (fo) is available in a range of 450 to 470KHz. The standard tolerance of fo is ±2KHz. For synthesizers and digital indicators, ±1KHz tolerance is also available.
The LPZ455JL series, with its two directly coupled elements, has a high degree of selectivity. The series features excellent matching characteristics for IFT.
( ) = Typical values
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 913-782-7787 800-237-1041 FAX 913-782-6991 WWW.ECSXTAL.COM
CERAMIC FILTERS
9
3.5
7.5
2.5 2.5
3.5
Connection
Input
Ground
Output
3
2
1
LPUB / LPZJL SERIES
CERAMIC FILTER
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
3dB
SELECTIVITY
INSERTION
PART NUMBER
BANDWIDTH (KHz)
-9 KHZ OFF (dB) MIN. +9 KHZ OFF (dB) MIN.
LOSS (dB) MAX.
COMPOSITION
LPU455B - (connected with IFT)
10 ±3
5 (7.5)
3 (5.5)
5 (3)
1 Element with IFT
LPZ455JL - (connected with IFT)
5.5 ±1
18 (20)
7 (3.5)
2 Elements Direct Coupling Type
Figure 1) LPU455B – Front and Side views
7.0
±0.3
Direct Coupled
3
Direct Coupled
4
Ground
5
Connection
Output
6
Ground
2
Input
1
9.0
±0.3
3.5
±0.5
7.0
±0.3
2.5 2.5
3.6
3
2
1
3
2
1
6
5
4
2.5 2.5
Figure 2) LPZ455JL – Front, Side and Bottom views
FEATURES
AM use
RoHS Compliant (Note 7 exemption)
PACKAGE DIMENSIONS (mm)
ITEM \ TYPE
LPU
B
LPZ
JL
x—yy——x—yy——
70 T
115 T
7 T
68 T
84 T
14 T
UNLOADED Qu
105
90
TUNING CAPACITY
180pF
3
4
2
1
6
WINDING SPECIFICATIONS
Bottom
view
LPU 455B
LPZ 455JL
R1
Rg
GROUND
INPUT
OUTPUT
Rg+R1=R2=input/output impedance
S.S.G.
LPU
RF
V.M.
R2
1
2
3
Figure 4) LPU Series – Measuring Circuit
Figure 3) Recommended IFT Specifications
3K
Rg = 50
LPZ
S.S.G.
RF
V.M.
3K
1
6
2
3
4
: Input
: Ground
: Direct Coupled
: Output
1
2
3
5
4
6
5
Figure 5) LPZ Series – Measuring Circuit
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