China Electronics Technology Group Corporation
No.26 Research Institute
900MHz SAW Filter
30MHz Bandwidth
Part Number: LBT90004
www.sipatsaw.com
SIPAT Co., Ltd.
Features
For RF SAW filter
Single-ended operation
Ceramic Surface Mount Package
Small size
No matching required for operation at 50Ω
RoHS compliant (2002/95/EC), Pb-free
Specifications
Parameter
Center Frequency
Insertion Loss(885~915MHz)
1 dB Bandwidth
3 dB Bandwidth
Passband variation(885~915MHz)
DC
½
840MHz
Ultimate Rejection
930
½
990MHz
990
½
2000MHz
Material Temperature coefficient
Substrate Material
Ambient Temperature
Operating Temperature Range
Storage Temperature Range
DC Voltage
Input Power
ESD Class
Package Size
Notes:
1.
2.
3.
4.
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;
Electrical margin has been built into the design to account for the variations due to temperature drift and
manufacturing tolerances;
This is the optimum impedance in order to achieve the performance show.
Unit
MHz
dB
MHz
MHz
dB
dB
dB
dB
KHz/°C
-
°C
°C
°C
V
dBm
-
Minimum
-
-
30
37
-
48
20
48
Typical
900
2.6
33.16
37.68
0.8
58
20
58
-28.8
42LT
25
Maximum
-
3.6
-
-
1.8
-
-
-
-40
-45
-
-
-
0
-
1A
+85
+105
10
SMD3.8*3.8
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
Part Number
Rev. Date
Ver.
LBT90004
2009-09-28
1.0
Page
1/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
900MHz SAW Filter
30MHz Bandwidth
Part Number: LBT90004
www.sipatsaw.com
SIPAT Co., Ltd.
Matching Configuration
Source/Load Impedance=50 ohm
INPUT
50
Ω
OUTPUT
50
Ω
Notes - Component values may change depending
on board layout.
Package Dimension
3.80 0.15
8
7
1
Pad Configuration:
Input:
3.80 0.20
2
90004
XXYY
4
Output: 6
Ground: All Others
6
1.20MAX
1.50
Package: SMD3.8*3.8
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
2
3
1.00
7
6
1.27
5
5
Marking Configuration:
1) •: Pad Number 1 Index
2) 90004: Part Number
3) XXYY: Date(Year/month)
1.90
8
1
2
3
4
1.80
Fax: +86-23-62808382
0.60
Unit: mm
Part Number
Rev. Date
Ver.
LBT90004
2009-09-28
1.0
Page
2/3
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
900MHz SAW Filter
30MHz Bandwidth
Part Number: LBT90004
www.sipatsaw.com
SIPAT Co., Ltd.
Typical Performance
Frequency Respond
Type Performance
8.4784
-1.5216
-11.5216
-1.0216
-0.0216
Passband Respond
Type Performance
-0.5216
-21.5216
Magnitude(dB)
A m plitude ripple(dB )
-31.5216
-41.5216
-51.5216
-61.5216
-1.5216
-2.0216
-2.5216
-3.0216
-71.5216
-81.5216
-91.5216
750
800
850
900
Frequency(MHz)
950
1000
1050
-3.5216
-4.0216
860
870
880
890
900
Frequency(MHz)
910
920
930
940
950
Horizontal: 50MHz/Div
Vertical: 10dB/Div
Horizontal: 10MHz/Div
Vertical: 0.5dB/Div
Group Delay Variation(f0±15MHz)
Type Performance
250
250
Phase Linearity(f0±15MHz)
Type Performance
200
200
150
150
100
100
X: 885
Y: 71.2
X: 900
Y: 34.61
X: 915
Y: 39.52
50
G roup Delay T im e(ns )
X: 885
Y: 17.49
X: 900
Y: -7.544
X: 915
Y: 18.2
D egree(deg)
920
930
50
0
0
-50
-100
-50
-150
-100
-200
-150
-250
-200
870
880
890
900
Frequency(MHz)
910
-300
870
880
890
900
Frequency(MHz)
910
920
930
Horizontal: 10MHz/Div
Vertical: 50ns/Div
Horizontal: 10MHz/Div
Vertical: 50deg/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
∞
0.0
5.0
∞
-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.
LBT90004
2009-09-28
1.0
Page
3/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
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