255.0
MHz SAW Filter
Project name
262907B
1. Features
Typical 1dB bandwidth of 29.4 MHz
High attenuation
Single Ended Operation
Dual In-line Package (DIP)
2. Electrical Specifications
Source and Load Impedance = 50
Minimum
Typical
Maximum
-
-
29.30
-
-
-
-
-
50
-
-
255.0
31.0
29.45
29.77
31.18
0.5
35
2.68
53
-
-18
-
32.5
-
-
31.30
1.2
70
-
-
10
-
Operating Temperature : -10℃ ~ +60℃
℃
℃
Center Frequency (fo)
Insertion Loss
1dB Bandwidth
3dB Bandwidth
40dB Bandwidth
Amplitude Ripple (fo ± 14.22 MHz)
Group Delay Variation (fo ± 14.22 MHz)
Absolute Delay
Ultimate Rejection
Maximum input Power
Temperature Coefficient of Frequency
MHz
dB
MHz
MHz
MHz
dB
nsec
usec
dB
dBm
ppm/℃
℃
Room Temperature :
+
25℃
℃
Insertion Loss
Amplitude Ripple
(fo ± 14.38 MHz)
Group Delay Variation
(fo ± 14.38 MHz)
Minimum
dB
dB
nsec
-
-
-
Typical
31.0
0.5
35
Maximum
32.5
1.2
70
D2012 Package Dimension
Matching Schematic
2.5±0.2
12.7±0.5
5.5max 6.0max
7.6±0.2
Input
50
Ω
L1
1
5
L2
Output
50
Ω
ITF 13A001
262907B
255-29.4M
C1
0.45±0.05
2.5±0.2
12.7±0.2
C2
20.3±0.5
L1 = L2 = 18nH, C1 = 27pF, C2 = 22pF
Pin Configuration
Dimensions shown are nominal in millimeters
Base : Fe(SPCC), Au plating over Ni plated
Cap : Cu & Cr Alloy, Ni Plated
Termination : Kovar, Au Plated
Input
Output
1
5
Ground
Others
2,4
Ground
I T F Co., Ltd.
102-901, Bucheon Technopark 364, Samjeong-Dong,
Ojeong-Gu, Bucheon-City,
Gyounggi-Do, Korea 421-809
Tel: 82-32-621-1213
Fax: 82-32-621-1218
http://www.itf.co.kr
sales@itf.co.kr
2013. 03. 27
Rev 1.0
ITF [ INTEGRATED TECHNOLOGY FUTURE ]
