China Electronics Technology Group Corporation
No.26 Research Institute
140MHz SAW Filter
8MHz Bandwidth
Part Number: LBS140A21
www.sipatsaw.com
SIPAT Co., Ltd.
Features
For IF SAW filter
High attenuation
Single-ended operation
Dual In-line Package
RoHS compliant (2002/95/EC), Pb-free
Specifications
Parameter
Center Frequency
Insertion Loss
3 dB Bandwidth
40 dB Bandwidth
Passband Variation
Absolute Delay
f0±4.65MHz
f0±4.85MHz
Ultimate Rejection
f0±5.25MHz
f0±9.25MHz
Material Temperature coefficient
Substrate Material
Ambient Temperature
Operating Temperature Range
Storage Temperature Range
DC Voltage
Input Power
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
dB
usec
dB
dB
dB
dB
KHz/°C
-
°C
°C
°C
V
dBm
-
Minimum
139.85
-
8.37
-
-
-
35
45
45
45
Typical
140
30
8.39
9.21
1.1
3.53
47
48
49
48
0.14
Qz
25
Maximum
140.15
32
-
-
1.5
4
-
-
-
-
-40
-45
-
-
0
+85
+105
-
-
1A
10
DIP3512 (35.0x12.8x4.7mm3)
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
Part Number
Rev. Date
Ver.
LBS140A21
2008-08-27
1.0
Page
1/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
140MHz SAW Filter
8MHz Bandwidth
Part Number: LBS140A21
www.sipatsaw.com
SIPAT Co., Ltd.
Matching Configuration
L1
L2
L1=120nH L2=82nH
OUTPUT
50
Ω
C2
Notes - Component values may change depending
on board layout.
INPUT
50
Ω
C1
C1=33pF
C2=36pF
Source/Load Impedance=50 ohm
Package Dimension
35.00 0.5
Pad Configuration:
SIPAT
LBS140A21
XXYYZZ
Input
Output
1
5
12.80 0.5
4.7
4.5
Ground All Others
Marking Configuration:
1) SIPAT: Manufacturer Name
2) LBS140A21: Part Number
3) XXYY: Date(Year/month)
4) ZZ: Identified Code
0.45 0.05
2.54 0.2
7.62 0.2
3
6
Package: DIP3512
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
2
1
4
5
25.40 0.2
2.54 0.2
Unit: mm
Part Number
Rev. Date
Ver.
LBS140A21
2008-08-27
1.0
Page
2/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
140MHz SAW Filter
8MHz Bandwidth
Part Number: LBS140A21
www.sipatsaw.com
SIPAT Co., Ltd.
Typical Performance
Frequency Respond
Type Performance
-20.0051
-30.0051
-40.0051
-29.5051
-28.5051
Passband Respond
Type Performance
-29.0051
-50.0051
Magnitude(dB)
Amplitude ripple(dB)
-60.0051
-70.0051
-80.0051
-90.0051
-30.0051
-30.5051
-31.0051
-31.5051
-100.0051
-110.0051
-120.0051
125
-32.0051
130
135
140
Frequency(MHz)
145
150
155
-32.5051
132
134
136
138
140
Frequency(MHz)
142
144
146
148
Horizontal: 5MHz/Div
Vertical: 10dB/Div
Horizontal: 2MHz/Div
Vertical: 0.5dB/Div
Group Delay Variation(f0±4MHz)
Type Performance
4000
20
Phase Linearity(f0±4MHz)
Type Performance
3900
15
3800
10
3700
5
X: 140
Y: 1.038
Group Delay Time(ns)
3600
X: 136
Y: 3555
X: 140
Y: 3539
X: 144
Y: 3459
0
Degree(deg)
X: 136
Y: -2.416
X: 144
Y: -2.08
3500
-5
3400
-10
3300
-15
3200
-20
3100
-25
3000
134
136
138
140
Frequency(MHz)
142
144
146
-30
134
136
138
140
Frequency(MHz)
142
144
146
Horizontal: 2MHz/Div
Vertical: 100ns/Div
Horizontal: 2MHz/Div
Vertical: 5deg/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
5.0
0.2
0.5
1.0
2.0
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
Tel: +86-23-62808818
Part Number
Rev. Date
Ver.
LBS140A21
2008-08-27
1.0
Page
3/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
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