China Electronics Technology Group Corporation
No.26 Research Institute
217.5MHz SAW Filter
5MHz Bandwidth
Part Number: LBS21701
www.sipatsaw.com
SIPAT Co., Ltd.
Specifications
Parameter
Center Frequency
Insertion Loss
1 dB Bandwidth
3 dB Bandwidth
40 dB Bandwidth
Passband Variation
Absolute Delay
Ultimate Rejection
Material Temperature coefficient
Ambient Temperature
Package Size
Unit
MHz
dB
MHz
MHz
MHz
dB
usec
Minimum
217.4
-
4.7
5
-
-
-
45
Typical
217.5
23.9
4.8
5.22
6.8
0.4
1.8
50
0.2175
25
Maximum
217.6
25
-
-
7
1
3.5
-
dB
KHz/°C
°C
DIP2212 (22.2x12.8x4.7mm3)
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
L2
L1=56nH
C1=22pF
L2=68nH
C2=15pF
C1
C2
Source/Load Impedance=50 ohm
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.
LBS21701
2005-10-31
1.0
Page
1/3
Phone: +86-23-62920684
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
SIPAT [ SIPAT Co,Ltd ]
