China Electronics Technology Group Corporation
No.26 Research Institute
204MHz SAW Filter
5MHz Bandwidth
Part Number: LBT20405
www.sipatsaw.com
SIPAT Co., Ltd.
Features
For IF SAW filter
Single-ended operation
Ceramic Surface Mount Package
Small size
RoHS compliant (2002/95/EC), Pb-free
Specifications
Parameter
Center Frequency
Insertion Loss
1 dB Bandwidth
3 dB Bandwidth
40 dB Bandwidth
Passband Variation
Group Delay Variation(f0±2.5MHz)
Phase Linearity(f0±2.5MHz)
Absolute Delay
Ultimate Rejection
f0-5.5MHz
f0+5.5MHz
Unit
MHz
dB
MHz
MHz
MHz
dB
nsec
deg
usec
dB
dB
KHz/°C
-
°C
°C
°C
V
dBm
-
Minimum
203.4
-
-
5
-
-
-
-
-
40
40
Typical
204
10.3
5.67
5.74
11.21
0.3
50
4
0.98
44
42
-3.67
112LT
25
Maximum
204.6
15
-
-
11.5
1
100
5
-
-
-
Material Temperature coefficient
Substrate Material
Ambient Temperature
Operating Temperature Range
Storage Temperature Range
DC Voltage
Input Power
ESD Class
Package Size
Notes:
1.
2.
-40
-45
-
-
0
+85
+105
-
-
1A
10
SMD13.3*6.5
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.
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
Part Number
Rev. Date
Ver.
LBT20405
2009-01-22
1.0
Page
1/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
204MHz SAW Filter
5MHz Bandwidth
Part Number: LBT20405
www.sipatsaw.com
SIPAT Co., Ltd.
Matching Configuration
L1
L2
L1=56nH
OUTPUT
50
Ω
C2
L2=47nH
C2=33pF
INPUT
50
Ω
C1
C1=36pF
Source/Load Impedance=50 ohm
Notes - Component values may change depending
on board layout.
Package Dimension
+0.2
13.3-0.1
Pad Configuration:
Input:
10
SIPAT
LBT20405
XXYYZZ
+0.2
6.5-0.1
Output: 5
Ground: All Others
Marking Configuration:
0.4
1.56 0.1
0.76
1) •: Pad Number 1 Index
2) SIPAT: Manufacturer Name
3) LBT20405: Part Number
4) XXYY: Date(Year/month)
5) ZZ: Identified Code
2.9
0.51
1.02
1.91
0.6
Package: SMD13.3*6.5
Unit: mm
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
Part Number
Rev. Date
Ver.
LBT20405
2009-01-22
1.0
Page
2/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
204MHz SAW Filter
5MHz Bandwidth
Part Number: LBT20405
www.sipatsaw.com
SIPAT Co., Ltd.
Typical Performance
Frequency Respond
Type Performance
-0.2905
-10.2905
-20.2905
-9.7905
-8.7905
Passband Respond
Type Performance
-9.2905
-30.2905
Magnitude(dB)
A m plitude ripple(dB )
-40.2905
-50.2905
-60.2905
-70.2905
-10.2905
-10.7905
-11.2905
-11.7905
-80.2905
-90.2905
-100.2905
-12.2905
180
185
190
195
200
205
210
Frequency(MHz)
215
220
225
-12.7905
194
196
198
200
202
204
Frequency(MHz)
206
208
210
212
214
Horizontal: 5MHz/Div
Vertical: 10dB/Div
Horizontal: 2MHz/Div
Vertical: 0.5dB/Div
Group Delay Variation(f0±2.5MHz)
Type Performance
1300
15
Phase Linearity(f0±2.5MHz)
Type Performance
1200
10
1100
5
X: 206.5
Y: 1.57
X: 204
Y: -0.838
G roup Delay T im e(ns )
X: 201.5
Y: 0.3912
1000
900
D egree(deg)
208
210
X: 201.5
Y: 968.5
X: 204
Y: 968
X: 206.5
Y: 956
0
-5
800
-10
700
-15
600
198
200
202
204
Frequency(MHz)
206
-20
198
200
202
204
Frequency(MHz)
206
208
210
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.
LBT20405
2009-01-22
1.0
Page
3/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
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