China Electronics Technology Group Corporation
No.26 Research Institute
240MHz SAW Filter
19MHz Bandwidth
Part Number:LBT24004
www.sipatsaw.com
SIPAT Co., Ltd.
Specifications
Parameter
Center Frequency
Insertion Loss
1.5 dB Bandwidth
3 dB Bandwidth
40 dB Bandwidth
50 dB Bandwidth
Passband Variation (f0±9.375MHz)
Absolute Delay
Group Delay
Variation(f0±9.375MHz)
Ultimate Rejection
Material Temperature coefficient
Ambient Temperature
Package Size
Unit
MHz
dB
MHz
MHz
MHz
MHz
dB
usec
Minimum
239.85
-
18.9
19.2
-
-
-
-
-
Typical
240
29.4
19.1
19.4
20.8
20.97
0.8
2.67
50
Maximum
240.15
31.5
-
-
21.1
-
1.5
-
100
nsec
dB
KHz/°C
°C
50
57
-4.32
25
-
DIP3512 (35.0x12.8x4.7mm3)
Notes:
1. All specifications are based on the test circuit shown
2. In production, devices will be tested at room temperature to a guardbanded specification to ensure
electrical compliance over 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
Matching Configuration
L1=10nH
L2=15nH
C2=22pF
L1
L2
C1=15pF
Source/Load Impedance=50 ohm
C1
C2
Notes - Component values may change depending
on board layout.
SIPAT Co., Ltd.
( CETC No. 26 Research Institute )
Nanping Huayuan Road No. 14
Chongqing, China, 400060
Part Number
Rev. Date
Rev.
LBT24004
2005-12-15
1.0
Page
1/3
Phone: +86-23-62920684
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
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