China Electronics Technology Group Corporation No.26 Research Institute
874.55MHz SAW Filter 9MHz Bandwidth
Part Number: LBT87502
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 1.5 dB Bandwidth Passband Variation(870~879.1MHz) Absolute Delay Input/Output VSWR(870~879.1MHz) 0~850MHz 850~859MHz Ultimate Rejection 888~893MHz 893~902MHz 902~2000MHz 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 dB usec dB dB dB dB dB KHz/°C °C °C °C V dBm -
Minimum
9.2 35 10 10 30 34
Typical
874.55 1.7 15.12 0.4 0.06 1.27/1.22 44 40 12 32 39 -27.99 42LT 25
Maximum
3.5 1.5 2.5 -
-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.
LBT87502 2008-07-29 1.0 Page 1/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation No.26 Research Institute
874.55MHz SAW Filter 9MHz Bandwidth
Part Number: LBT87502
www.sipatsaw.com
SIPAT Co., Ltd.
Matching Configuration
Source/Load Impedance=50 ohm
INPUT 50Ω OUTPUT 50Ω
Notes - Component values may change depending on board layout.
Package Dimension
3.80 0.2
Pad Configuration: Input:
3.80 0.2
2
6
1.5MAX
Package: SMD3.8*3.8
SIPAT Co., Ltd.
( CETC No.26 Research Institute ) #14 Nanping Huayuan Road, Chongqing, China, 400060 Tel: +86-23-62808818
1
SIPAT 87502 XXYYZZ
Output: 5 Ground: All Others
5
2 3 6 5 4
4
Marking Configuration: 1) •: Pad Number 1 Index 2) SIPAT: Manufacturer Name 3) 87502: Part Number 4) XXYY: Date(Year/month) 5) ZZ: Identified Code
1.90
1 2 3 0.60
1.80
Unit: mm
Part Number Rev. Date Ver.
LBT87502 2008-07-29 1.0 Page 2/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation No.26 Research Institute
874.55MHz SAW Filter 9MHz Bandwidth
Part Number: LBT87502
www.sipatsaw.com
SIPAT Co., Ltd.
Typical Performance
Frequency Respond
Type Performance 8.2745 -1.7255 -11.7255
-1.2255 -0.2255
Passband Respond
Type Performance
-0.7255
-21.7255 Magnitude(dB)
Amplitude ripple(dB)
-31.7255 -41.7255 -51.7255 -61.7255
-1.7255
-2.2255
-2.7255
-3.2255
-71.7255 -81.7255 -91.7255 780 800 820 840 860 880 900 Frequency(MHz) 920 940 960
-3.7255
-4.2255
860
865
870
875 Frequency(MHz)
880
885
890
895
Horizontal: 20MHz/Div
Vertical: 10dB/Div
Horizontal: 5MHz/Div
Vertical: 0.5dB/Div
Group Delay Variation(f0±4.5MHz)
Type Performance 200 40
Phase Linearity(f0±4.5MHz)
Type Performance
30 150 20
100
X: 870 Y: 72.74
10
X: 870 Y: 2.482 X: 874.5 Y: 53.43 X: 879 Y: 55.09 X: 879 Y: 2.91 X: 874.5 Y: -2.525
Group Delay Time(ns)
50
Degree(deg) 882 884
0
-10
0
-20
-30 -50 -40
-100
866
868
870
872
874 876 Frequency(MHz)
878
880
-50
866
868
870
872
874 876 Frequency(MHz)
878
880
882
884
Horizontal: 2MHz/Div
Vertical: 50ns/Div
Horizontal: 2MHz/Div
Vertical: 10deg/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
0.0
∞
0.0
5.0
0.2
0.5
1.0
2.0
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.
LBT87502 2008-07-29 1.0 Page 3/3
Fax: +86-23-62808382
www.sipatsaw.com / sawmkt@sipat.com
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