China Electronics Technology Group Corporation
No.26 Research Institute
140MHz SAW Filter
3.5MHz Bandwidth
SIPAT Co., Ltd.
www.sipatsaw.com
Part Number: LB140DS03
Specifications
Parameter
Unit
MHz
dB
Minimum
Typical
140
10
Maximum
139.7
139.3
Center Frequency
Insertion Loss
-
12.5
MHz
MHz
MHz
dB
2.5
3.03
3.95
7.18
0.4
-
-
1 dB Bandwidth
3 dB Bandwidth
3.5
-
-
-
-
-
-
8
40 dB Bandwidth
Passband Variation
1
Absolute Delay
Group Delay Variation(f0±0.6MHz)
Phase Linearity (f0±0.6MHz)
Ultimate Rejection
usec
nsec
degrees
dB
0.85
60
-
100
6
3
42
-
Material Temperature coefficient
Ambient Temperature
KHz/°C
°C
-2.52
25
Package Size
SMP-53
Notes:
1. All specifications are based on the test circuit shown
2. In production, devices will be tested at room temperature to a guardbanded specification to ensure
electrical compliance over temperature
3. Electrical margin has been built into the design to account for the variations due to temperature drift
and manufacturing tolerances
4. This is the optimum impedance in order to achieve the performance show
Matching Configuration
L1
L2
L1=56nH L2=82nH
C1=39pF
Source/Load Impedance=50 ohm
Notes - Component values may change depending
on board layout.
C1
Part Number
LB140DS03
2005-11-7
1.0
SIPAT Co., Ltd.
( CETC No. 26 Research Institute )
Nanping Huayuan Road No. 14
Chongqing, China, 400060
Rev. Date
Rev.
Page 1/3
Phone: +86-23-62920684
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
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