China Electronics Technology Group Corporation
No.26 Research Institute
140MHz Low-loss SAW Filter
4.5MHz Bandwidth
Part Number:
LB140DS23
www.sipatsaw.com
SIPAT Co., Ltd.
Specifications
Parameter
Center Frequency
Insertion Loss
1 dB Bandwidth
3 dB Bandwidth
35 dB Bandwidth
Passband Variation
Group delay Variation(80% of 3dB)
Ultimate Rejection
Absolute Delay
Subatrate Material
Ambient Temperature
Package Size
°C
SF－26
Unit
MHz
dB
MHz
MHz
MHz
dB
nsec
dB
Minimum
139.8
-
4.5
5
-
-
-
40
-
Typical
140
11.1
5.1
5.98
8.9
0.4
70
45
0.869
Maximum
140.2
13
-
-
9.2
1
100
-
-
usec
112LT
25
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=22nH
L2=150nH
L3=220nH L4=150nH
Source/Load Impedance=50 ohm
Notes - Component values may change depending
on board layout.
SIPAT Co., Ltd.
( CETC No. 26 Research Institute )
Nanping Huayuan Road No. 14
Chongqing, China, 400060
Part Number
Rev. Date
Rev.
LB140DS23
2005-5-18
1.0
Page
1/3
Phone: +86-23-62920684
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
SIPAT [ SIPAT Co,Ltd ]
