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 50Ω C2
L2=47nH C2=33pF
INPUT 50Ω 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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