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 50Ω C2
Notes - Component values may change depending on board layout.
INPUT 50Ω 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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