China Electronics Technology Group Corporation
No.26 Research Institute
250MHz SAW Filter
8MHz Bandwidth
Part Number: LBT25003
www.sipatsaw.com
SIPAT Co., Ltd.
Features
For IF SAW filter
High attenuation
Single-ended operation
Dual In-line Package
RoHS compliant (2002/95/EC), Pb-free
Specifications
Parameter
Center Frequency
Insertion Loss
1 dB Bandwidth
3 dB Bandwidth
40 dB Bandwidth
50 dB Bandwidth
Passband Variation
Phase Linearity(f0±4MHz)
Group Delay Variation(f0±4MHz)
Absolute Delay
Ultimate Rejection
Material Temperature coefficient
Substrate Material
Ambient Temperature
Operating Temperature Range
DC Voltage
Input Power
ESD Class
Package Size
Notes:
1.
2.
All specifications are based on the test circuit shown;
In production, all specifications are measured by Agilent Network analyzer and full 2 port calibration at room
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.
Unit
MHz
dB
MHz
MHz
MHz
MHz
dB
deg
nsec
usec
dB
KHz/°C
-
°C
°C
V
dBm
-
Minimum
249.8
-
7.3
8
-
-
-
-
-
-
50
Typical
250
22.2
7.95
8.41
10.14
10.3
0.8
8
50
2.1
57
-4.5
112LT
25
Maximum
250.2
25.5
-
-
10.6
11
1
10
210
-
-
-40
-
0
+85
-
-
1A
10
DIP2212 (22.2x12.8x4.7mm3)
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
Part Number
Rev. Date
Ver.
LBT25003
2010-04-07
1.0
Page
1/3
Fax: +86-23-62808382
www.sipatsaw.com / sales@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
250MHz SAW Filter
8MHz Bandwidth
Part Number: LBT25003
www.sipatsaw.com
SIPAT Co., Ltd.
Matching Configuration
L1
L2
L1=5nH
OUTPUT
50
Ω
C2
L2=10nH
INPUT
50
Ω
C1
C1=C2=22pF
Source/Load Impedance=50 ohm
Notes - Component values may change depending
on board layout.
Package Dimension
22.20 0.50
12.80 0.50
SIPAT
LBT25003
XXYYZZ
Pad Configuration:
Input
Output
1
5
Ground All Others
4.30 0.50 4.50 0.50
Marking Configuration:
1) SIPAT: Manufacturer Name
2) LBT25003: Part Number
3) XXYY: Date(Year/month)
4) ZZ: Identified Code
0.45 0.05
2.54 0.20
7.62 0.20
3
Package: DIP2212
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
2
1
4
5
6
12.70 0.20
2.54 0.20
Unit: mm
Part Number
Rev. Date
Ver.
LBT25003
2010-04-07
1.0
Page
2/3
Fax: +86-23-62808382
www.sipatsaw.com / sales@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
250MHz SAW Filter
8MHz Bandwidth
Part Number: LBT25003
www.sipatsaw.com
SIPAT Co., Ltd.
Typical Performance
Frequency Response
Type Performance
-12.1658
-22.1658
-32.1658
-42.1658
-52.1658
-62.1658
-72.1658
-82.1658
-92.1658
-102.1658
-112.1658
225
Amplitude ripple(dB)
Magnitude(dB)
-19.6658
-20.1658
-20.6658
-21.1658
-21.6658
-22.1658
-22.6658
-23.1658
-23.6658
-24.1658
-24.6658
Passband Response
Type Performance
230
235
240
245
250
255
Frequency(MHz)
260
265
270
275
244
246
248
250
252
Frequency(MHz)
254
256
Horizontal: 5MHz/Div
Vertical: 10dB/Div
Horizontal: 2MHz/Div
Vertical: 0.5dB/Div
Group Delay Variation(f0±4MHz)
Type Performance
2600
Phase Linearity(f0±4MHz)
Type Performance
40
2500
30
2400
20
2300
10
2200
G roup Delay T im e(ns )
X: 246
Y: 2103
X: 250
Y: 2145
X: 254
Y: 2123
X: 250
Y: 0.3473
2000
Degree(deg)
2100
0
X: 246
Y: -3.024
X: 254
Y: -0.1761
-10
1900
-20
1800
-30
1700
-40
1600
1500
244
246
248
250
Frequency(MHz)
252
254
256
-50
244
246
248
250
Frequency(MHz)
252
254
256
Horizontal: 2MHz/Div
Vertical: 100ns/Div
Horizontal: 2MHz/Div
Vertical: 10deg/Div
Smith Chart S11
+j1.0
+j0.5
+j2.0
Smith Chart S22
+j1.0
+j0.5
+j2.0
+j0.2
+j5.0
+j0.2
+j5.0
0.2
0.5
1.0
2.0
5.0
0.2
0.5
1.0
2.0
0.0
∞
5.0
0.0
∞
-j0.2
-j5.0
-j0.2
-j5.0
-j0.5
-j1.0
-j2.0
-j0.5
-j1.0
-j2.0
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
Part Number
Rev. Date
Ver.
LBT25003
2010-04-07
1.0
Page
3/3
Fax: +86-23-62808382
www.sipatsaw.com / sales@sipat.com
单片机
