China Electronics Technology Group Corporation
No.26 Research Institute
121.8MHz SAW Filter
7.8MHz Bandwidth
Part Number:
LBT12101
www.sipatsaw.com
SIPAT Co., Ltd.
Specifications
Parameter
Center Frequency
Insertion Loss
3 dB Bandwidth
30 dB Bandwidth
40 dB Bandwidth
Passband Variation
Absolute Delay
Group Delay Variation(f
0±3.12MHz)
Ultimate Rejection
Subatrate Material
Ambient Temperature
Package Size
°C
Unit
MHz
dB
MHz
MHz
MHz
dB
usec
nsec
Minimum
121.72
Typical
121.8
24
Maximum
121.88
24.5
7.8
7.81
8.73
8.86
0.5
2.72
100
8.8
9.1
1
4
200
dB
40
45
112LT
25
DIP2712 (27.0x12.8x4.7mm3)
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
L2
L1=47nH L2=56nH
C1
C2
C1=33pF C2=47pF
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.
LBT12101
2005-3-29
1.0
Page
1/3
Phone: +86-23-62920684
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
SIPAT [ SIPAT Co,Ltd ]
