Data Sheet
82
• 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 CERAMIC FILTERS
93.5
7.5
2.5 2.5
3.5
Connection
Input
Ground
Output
3
3
2
2
1
1
LPUB / LPZJL
SERIES
CERAMIC FILTER
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
3dB SELECTIVITY 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) 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 ±0.33.5 ±0.5
7.0 ±0.3
2.5 2.5
3.6
3.6
3
2
1
321
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
①
—
②②
—
➂➃
—
➅①
—
②②
—
➂➃
—
➅
70 T 115 T 7 T 68 T 84 T 14 T
UNLOADED Qu 105 90
TUNING CAPACITY 180pF 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 = 50Ω
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