LPUB / LPZJL
SERIES
CERAMIC FILTER
FEATURES
• AM use
• RoHS Compliant (Note 7 exemption)
LPU 455B
LPZ 455JL
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PART NUMBER
LPU455B - (connected with IFT)
LPZ455JL - (connected with IFT)
3dB
BANDWIDTH (KHz)
10 ±3
5.5 ±1
SELECTIVITY
SELECTIVITY
-9 KHZ OFF
(dB) MIN.
+9 KHZ OFF
(dB) MIN.
5 (7.5)
3 (5.5)
18 (20)
18 (20)
INSERTION
LOSS (dB) MAX.
5 (3)
7 (3.5)
COMPOSITION
1 Element with IFT
2 Elements Direct Coupling Type
• 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
PACKAGE DIMENSIONS (mm)
ITEM \ TYPE
7.5
3.5
WINDING SPECIFICATIONS
3
2
4
LPU
B
LPZ
JL
x
—
y
70 T
y
—
➂
115 T
105
180pF
➃
—
➅
7T
x
—
y
68 T
y
—
➂
84 T
90
180pF
➃
—
➅
14 T
Bottom
view
6
1
9
UNLOADED Qu
TUNING CAPACITY
3.5
Connection
1 Input
2 Ground
Figure 3) Recommended IFT Specifications
3
2
1
2.5 2.5
3 Output
INPUT
OUTPUT
R1
1
3
Figure 1) LPU455B – Front and Side views
Rg
7.0
±0.3
7.0
±0.3
LPU
GROUND
2
R2
S.S.G.
RF
V.M.
Rg+R1=R2=input/output impedance
9.0
±0.3
Figure 4) LPU Series – Measuring Circuit
3.5
±0.5
3
2
1
2.5 2.5
3.6
3
4
Connection
1
2
3
3K
2
LPZ
5
1
: Input
5 2
: Ground
4 3
: Direct Coupled
6
: Output
1 Input
3.6
2 Ground
3 Direct Coupled
4 Direct Coupled
5 Ground
S.S.G.
Rg = 50Ω
1
6
6
5
4
3K
RF
V.M.
2.5 2.5
6 Output
Figure 2) LPZ455JL – Front, Side and Bottom views
Figure 5) LPZ Series – Measuring Circuit
ECS, INC. INTERNATIONAL
1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
CERAMIC FILTERS
82
CERAMIC FILTERS
ECS [ ECS, INC. ]
