China Electronics Technology Group Corporation
No.26 Research Institute
129.1MHz IF SAW Filter
18MHz Bandwidth
Part Number: LBN12903
www.sipatsaw.com
SIPAT Co., Ltd.
Specifications
Parameter
Center Frequency
Insertion Loss
3 dB Bandwidth
35 dB Bandwidth
40 dB Bandwidth
45dB Bandwidth
50 dB Bandwidth
55 dB Bandwidth
Passband Variation
Absolute Delay
Ultimate Rejection(f0±15MHz)
Material Temperature coefficient
Ambient Temperature
Package Size
Unit
MHz
dB
MHz
MHz
MHz
MHz
MHz
MHz
dB
usec
Minimum
128.95
-
18.35
-
-
-
-
-
-
-
55
Typical
129.1
26
18.44
19.17
19.21
19.26
19.31
19.36
1.2
3.54
60
-12.14
25
Maximum
129.25
28
-
19.2
-
-
20.4
28.4
1.5
4
-
dB
KHz/°C
°C
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
INPUT
50
Ω
C1
L1
L1=82nH
L2
OUTPUT
50
Ω
C2
L2=56nH
C2=22pF
C1=18pF
Source/Load Impedance=50 ohm
Notes - Component values may change depending
on board layout.
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
Part Number
Rev. Date
Ver.
LBN12903
2007-08-06
1.0
Page
1/4
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
SIPAT [ SIPAT Co,Ltd ]
