140 MHz Low-Loss Filter
4 MHz Bandwidth
Part Number SF0140BA03068S
Micro Networks., 324 Clark Street, Worcester, MA 01606, USA tel: 508-852-5400, fax:508-852-8456, www.icst.com
TYPICAL PERFORMANCE
Horizontal: 4.0 MHz/div Vertical (from top): Magnitude 10 dB/div
Magnitude 1 dB/div
Group Delay 100 ns/div
SPECIFICATION
Parameter Min. Typ. Max. Units.
Center Frequency ( Fc) 1 139.6 140.0 140.4 MHz
Insertion Loss 12.0 12.5 dB
1 dB Bandwidth 3.4 4.1 MHz
3 dB Bandwidth 4.0 4.86 MHz
40 dB Bandwidth 7.75 9.1 MHz
Passband Ripple 2 0.4 1.0 dB p-p
Phase Ripple 2 2.0 6.0 deg p-p
Group Delay Ripple 2 50 100 ns p-p
Absolute Delay 1.2 us
Ultimate Rejection 40 50 dB
Temperature Coefficient of Frequency -18 ppm/º C
Substrate Material Lithium Tantalate
Source and Load Impedance 50 Ω
Ambient Temperature 25 º C
Notes:
1. Mean Value of 3 dB points. 3dB measured from peak.
2. Measured over 90% of minimum 3 dB Bandwidth
Rev X3 19-May-04
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140 MHz Low-Loss Filter
4 MHz Bandwidth
Part Number SF0140BA03068S
Micro Networks., 324 Clark Street, Worcester, MA 01606, USA tel: 508-852-5400, fax:508-852-8456, www.icst.com
Micro Networks
Worldwide Headquarters: 324 Clark Street W orcester, MA 01606. tel: 508-852-5400 fax: 508-852-8456
PACKAGE OUTLINE
Units: mm
Pin Configuration:
Input: 11
Input Return: 12
Output: 5
Output Return: 6
Ground: All other pins
Ls2
Ls1
Cp1
14 8
1 7
MATCHING CIRCUIT
Component values:
Ls1 = 139 nH Ls2 = 112 nH (Minimum Q = 45)
Cp1 = 39 pF
Notes
1. Recommend use of 5% tolerance components.
2. Optimum values depend on board layout. Values intended as guide only. ISO 9001
Registered
www.icst.com Rev X3 19-May-04
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