205708B

281 MHz SAW Filter
Part Number 205708B
1. Features

Typical 1dB bandwidth of 6.8 MHz

Low-Loss Filter

Single Ended Operation

Surface Mounted Package (SMD)
2. Electrical Specifications
Source and Load Impedance = 50Ω
Room Temperature : +25℃
Minimum
Typical
Maximum
MHz
280.8
281.0
281.2
dB
-
11.5
13.5
1dB Bandwidth
MHz
-
6.8
-
3dB Bandwidth
MHz
7.7
8.05
-
40dB Bandwidth
MHz
-
13.0
13.5
dB
-
0.55
1.0
Group Delay Variation (fo ± 3.0 MHz)
nsec
-
35
100
Absolute Delay
usec
-
0.62
-
dB
40
43
-
ppm/℃
-
-18
-
Center Frequency (fo)
Insertion Loss
Amplitude Ripple (fo ± 3.0 MHz)
Ultimate Rejection
Temperature Coefficient of Frequency
S1365 Package Dimension
13.30±0.2
12
8
7.62±0.1
7
ITF 13A001
205708B
. 281-6.8M
1
2
3
4
7
9
8
11
5
C2
Out put
50Ω
11
L1
1.50±0.1
5
5
C1
I nput
50Ω
10
6
6
2.54±0.1
11
9
1.61±0.2
6.50±0.2
10
Matching Schematic
L2
12
4
3
2
2.54±0.1
1
0.80±0.1
L1 = 12nH, C1 = 130pF, C2 = 91pF, L2 = 12nH
Pin Configuration
Dimensions shown are nominal in millimeters
Body : Al2O3
Lid : Kovar, Ni Plated
Termination : Au plating 0.3 ~ 1.0um, over a 1.27 ~ 8.89um Ni Plating
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
Input
11
Ground
6, 12
Output
5
Others
Ground
http://www.itf.co.kr
[email protected]
2013. 09. 25
Rev 1.0
281 MHz SAW Filter
Part Number 205708B
3. Typical Performance ( at +25℃ )
1dB Bandwidth & Ripple
CH2
CH4
S21
S21
LOG
LOG
1 dB/
1 dB/
40dB Bandwidth
25 Sep 2013 17:26:29
1: 0. 0000 dB
0. 000 000 MHz
3: . 07740 dB
6. 000 000 MHz
REF -11.2 dB
REF -11.2 dB
BW:
CH1
S21
LOG
10 dB/
CH2 Markers
REF=1
6. 802651 MHz
cent : 281 . 005836
MHz
25 Sep 2013 17:26:08
1: 0. 0000 dB
0. 000 000 MHz
REF -11.2 dB
BW:
1
Cor
Q: 41 . 308
CH1 Markers
REF=1
12 . 903617 MHz
cent : 281 . 085948
2
MHz
Q: 21 . 784
1_loss : -11 . 414 dB
1
1_loss : -11 . 413 dB
2
3
4
3
2
CH4 Markers
REF=2
mean : -11 . 418 dB
Cor
s. dev : . 08700
dB
p-p : . 53680
dB
3
4
Cor
CENTER 281 . 000 000 MHz
SPAN
12 . 000 000 MHz
2
4
CENTER 281 . 000 000 MHz
3dB Bandwidth & Group Delay
CH2
CH4
S21
S21
LOG
DEL
1 dB/
100 ns/
BW:
35 . 000 000 MHz
Smith Chart(S11 & S22)
25 Sep 2013 17:26:18
1: 0. 0000 dB
0. 000 000 MHz
3: -21 . 744 ns
6. 000 000 MHz
REF -11.2 dB
REF 594 ns
SPAN
CH1 S11
CH3 S22
1 U FS
1 U FS
1: 58. 648
2: 52. 555
46. 760
-10 . 510
25 Sep 2013 17:26:44
26. 484 nH
281. 000 000 MHz
53. 892 pF
281. 000 000 MHz
CH2 Markers
REF=1
8. 056556 MHz
cent : 280 . 972866
MHz
Cor
Q: 34 . 875
1_loss : -11 . 423 dB
1
1
Cor
2
3
2
2
CH4 Markers
REF=2
4 mean : 617 . 09 ns
3
Cor
Smo
s. dev : 6. 2275 4ns
p-p : 34 . 491 ns
Cor
CENTER 281 . 000 000 MHz
SPAN
12 . 000 000 MHz
2
CENTER 281. 000 000 MHz
Wide band Properties
CH1
S21
LOG
10 dB/
REF -11.2 dB
SWR(S11 & S22)
25 Sep 2013 17:27:39
1: 0. 0000 dB
0. 000 000 MHz
1
SPAN 35. 000 000 MHz
CH1 Markers
REF=1
2: -43 . 599 dB
281 . 000 MHz
CH1
CH3
S11
S22
SWR
SWR
2 /
2 /
25 Sep 2013 17:27:06
1: 2. 3405
281 . 000 000 MHz
2: 1. 2344
281 . 000 000 MHz
REF 0
REF 0
Cor
3: -49 . 210 dB
562 . 000 MHz
Cor
1
2
3
2
START
. 010 000 MHz
STOP 900 . 000 000 MHz
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
CENTER 281 . 000 000 MHz
http://www.itf.co.kr
SPAN
[email protected]
35 . 000 000 MHz
2013. 09. 25
Rev 1.0
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