China Electronics Technology Group Corporation
No.26 Research Institute
121.8MHz SAW Filter
25MHz Bandwidth
Part Number: LBN12205
www.sipatsaw.com
SIPAT Co., Ltd.
Specifications
Parameter
Center Frequency
Insertion Loss
1.2 dB Bandwidth
3 dB Bandwidth
10 dB Bandwidth
20 dB Bandwidth
35 dB Bandwidth
40 dB Bandwidth
Passband Variation
Absolute Delay
Phase Linearity(f0±12MHz)
Group Delay Variation(f0±12MHz)
Ultimate Rejection(Over f0±20MHz)
Material Temperature coefficient
Ambient Temperature
Package Size
Unit
MHz
dB
MHz
MHz
MHz
MHz
MHz
MHz
dB
usec
deg
Minimum
121.6
-
25.1
25.2
-
-
-
-
-
-
-
-
40
Typical
121.8
20
25.8
26.39
27.46
28.42
29.84
31.42
0.9
1.15
7
50
42
-11.45
25
SMD13.3*6.5C
Maximum
122
25
-
-
-
-
31
-
1.2
1.5
10
200
-
nsec
dB
KHz/°C
°C
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=82nH
INPUT
50
Ω
L1
L2
C1=4.7pF
OUTPUT
50
Ω
C1
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
Ver.
LBN12205
2007-04-23
1.0
Page
1/4
Phone: +86-23-62808818
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
SIPAT [ SIPAT Co,Ltd ]
