China Electronics Technology Group Corporation
No.26 Research Institute
140MHz SAW Filter
3.7MHz Bandwidth
Part Number: LBS140A78
LBS140A78
SIPAT Co., Ltd.
www.sipatsaw.com
Features
½
½
½
½
½
For RF SAW filter
Single-ended operation
Ceramic Surface Mount Package
Small size
RoHS compliant (2002/95/EC), Pb-free
Specifications
Parameter
Center Frequency
Insertion Loss
3 dB Bandwidth
35 dB Bandwidth
45 dB Bandwidth
50 dB Bandwidth
53 dB Bandwidth
Passband Variation
Ultimate Rejection(f0±15MHz)
Absolute Delay
Material Temperature coefficient
Substrate Material
Ambient Temperature
Operating Temperature Range
Storage Temperature Range
ESD Class
Package Size
Notes:
1.
2.
All specifications are based on the test circuit shown;
In production, all specifications are measured by Agilent Network analyzer and full 2 port calibration at room
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.
Unit
MHz
dB
MHz
MHz
MHz
MHz
MHz
dB
dB
usec
ppm/°C
-
°C
°C
°C
-
Minimum
139.85
Typical
140
24.5
Maximum
140.15
28
3.7
3.88
4.55
4.62
4.66
4.73
0.5
4.6
5
5.8
13.8
1.5
53
55
3.32
0.14
QZ
25
4.5
-40
-45
-
-
1C
+85
+105
DIP3512 (35.0x12.8x4.7mm3)
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Part Number
Rev. Date
Ver.
LBS140A78
2012.05.28
1.0
Page
1/3
Phone:
Tel: +86-23-62808818
+86-23-62920684
Fax:
+86-23-62805284
Fax:
+86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
140MHz SAW Filter
3.7MHz Bandwidth
Part Number: LBS140A78
LBS140A78
SIPAT Co., Ltd.
www.sipatsaw.com
Matching Configuration
手动测试座
L1=L2=100nH
C1=39pF C2=27pF
Source/Load Impedance=50 ohm
Notes - Component values may change depending
on board layout.
Package Dimension
35.00 0.50
Pad Configuration:
Configuration:
Input:
Output:
1
5
12.80 0.50
SIPAT
LBS140A78
XXYYZZ
Ground: All Others
4.70 0.50 4.50 0.50
Marking Configuration:
Configuration:
1) •: Pad Number 1 Index
2) LBS140A78: Part Number
3) XYYZZ: Date(Year/month)
0.45 0.05
2.54 0.20
7.62 0.50
3
6
Package: DIP3512
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Phone:
Tel: +86-23-62808818
+86-23-62920684
2
1
4
5
25.40 0.50
2.54 0.20
Unit: mm
Part Number
Rev. Date
Ver.
LBS140A78
2012.05.28
1.0
Page
2/3
Fax:
+86-23-62805284
Fax:
+86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
140MHz SAW Filter
3.7MHz Bandwidth
Part Number: LBS140A78
LBS140A78
SIPAT Co., Ltd.
www.sipatsaw.com
Typical Performance
Frequency Response
Type Performance
-14.5049
-24.5049
-34.5049
-44.5049
-54.5049
-64.5049
-74.5049
-84.5049
-94.5049
-104.5049
-114.5049
125
Amplitude ripple(dB)
-22.0049
-22.5049
-23.0049
-23.5049
-24.0049
-24.5049
-25.0049
-25.5049
-26.0049
-26.5049
-27.0049
Passband Response
Type Performance
Magnitude(dB)
130
135
140
145
Frequency(MHz)
150
155
136
137
138
139
140
141
Frequency(MHz)
142
143
144
Horizontal: 5MHz/Div
Vertical: 10dB/Div
Horizontal: 1MHz/Div
Vertical: 0.5dB/Div
Group Delay Variation
Type Performance
4200
8
Phase Linearity
Type Performance
4000
6
3800
Group Delay Time(ns)
4
3600
2
Degree(deg)
X: 138.1
3400
Y: 3304
X: 140
Y: 3355
X: 141.9
Y: 3300
X: 140
Y: 0.05184
X: 141.9
Y: 2.281
0
X: 138.1
Y: -2.205
3200
-2
3000
-4
2800
2600
137.5
138
138.5
139
139.5 140 140.5
Frequency(MHz)
141
141.5
142
142.5
-6
137.5
138
138.5
139
139.5 140 140.5
Frequency(MHz)
141
141.5
142
142.5
Horizontal: 0.5MHz/Div
Vertical: 200ns/Div
Horizontal: 0.5MHz/Div
Vertical: 2deg/Div
Smith Chart S11
+j1.0
+j0.5
+j2.0
Smith Chart S22
+j1.0
+j0.5
+j2.0
+j0.2
+j5.0
+j0.2
+j5.0
0.2
0.5
1.0
2.0
0.2
0.5
1.0
2.0
∞
5.0
0.0
5.0
0.0
∞
-j0.2
-j5.0
-j0.2
-j5.0
-j0.5
-j1.0
-j2.0
-j0.5
-j1.0
-j2.0
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Part Number
Rev. Date
Ver.
LBS140A78
2012.05.28
1.0
Page
3/3
Phone:
Tel: +86-23-62808818
+86-23-62920684
Fax:
+86-23-62805284
Fax:
+86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
www.sipatsaw.com / sawmkt@sipat.com
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