126 MHz SAW Filter
Part Number
251557B
1. Features
Typical 1dB bandwidth of 14.5 MHz
Low-Loss Filter
Single Ended Operation
Surface Mounted Package (SMD)
2. Electrical Specifications
Source and Load Impedance = 50Ω
Room Temperature : +25℃
Center Frequency (fo)
Insertion Loss
1dB Bandwidth
3dB Bandwidth
40dB Bandwidth
Amplitude Ripple (fo ± 6.1 MHz)
Group Delay Variation (fo ± 3.5 MHz)
Group Delay Variation (fo ± 6.1 MHz)
Group Delay Variation (fo ± 7.0 MHz)
Absolute Delay
Ultimate Rejection
Temperature Coefficient of Frequency
MHz
dB
MHz
MHz
MHz
dB
nsec
nsec
nsec
usec
dB
ppm/℃
Minimum
-
-
14.0
-
-
-
-
-
-
-
40
-
Typical
126.0
8.5
14.5
15.54
19.5
0.25
20
25
50
0.88
45
-86
Maximum
-
11.0
-
-
20.0
1.0
30
40
60
-
-
-
S1365 Package Dimension
Matching Schematic
13.30±0.2
10
9
8
7
7
7.62±0.1
8
9
10
I nput
50
Ω
11
11
L1
5
L2
O put
ut
50
Ω
6.50±0.2
11
12
1.61±0.2
2.54±0.1
ITF 13A001
251557B
. 126-14.5M
1
2
3
4
6
6
1.50±0.1
5
5
12
4
3
2
2.54±0.1
1
0.80±0.1
L1 = 27nH, L2 = 22nH
Pin Configuration
Dimensions shown are nominal in millimeters
Body : Al
2
O
3
Lid : Kovar, Ni Plated
Termination : Au plating 0.3 ~ 1.0um, over a 1.27 ~ 8.89um Ni Plating
Input
Output
11
5
Ground
Others
6, 12
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. 11. 20
Rev 2.0
126 MHz SAW Filter
Part Number
251557B
3. Typical Performance ( at +25
℃
)
1dB Bandwidth & 3dB Bandwidth
CH2
CH4
S21
S21
LOG
LOG
1 dB/
1 dB/
REF -8.2 dB
REF -8.2 dB
20 Nov 2013 16:29:34
1: 0. 0000 dB
0. 000 000 MHz
1: 0. 0000 dB
0. 000 000 MHz
CH2 Markers
REF=1
14 . 405957 MHz
MHz
Cor
Q: 8. 7491
1
2
1_loss : -8 . 3170 dB
CH1
S21
LOG
10 dB/
40dB Bandwidth
REF -8.2 dB
20 Nov 2013 16:29:08
1: 0. 0000 dB
0. 000 000 MHz
BW
:
cent : 126 . 039894
1
2
BW
:
CH1 Markers
REF=1
19 . 173565 MHz
MHz
cent : 126 . 169045
Q: 6. 5804
1_loss : -8 . 3029 dB
3
1
2
4
Cor
BW
:
CH4 Markers
REF=1
15 . 544187 MHz
MHz
Q: 8. 1106
3
4
cent : 126 . 072708
Cor
3
1_loss : -8 . 3170 dB
4
CENTER 126 . 000 000 MHz
SPAN
19 . 000 000 MHz
4
2
CENTER 126 . 000 000 MHz
SPAN
60 . 000 000 MHz
Ripple & Group Delay(Fo
±
3.5 MHz)
CH2
CH4
S21
S21
LOG
DEL
1 dB/
50 ns/
REF -8.2 dB
REF 922 ns
20 Nov 2013 16:30:20
3: - . 13470 dB
7. 000 000 MHz
3: -7 . 9632 ns
7. 000 000 MHz
CH2 Markers
REF=2
mean : -8 . 3572 dB
s. dev : . 04440
p-p : . 21610
3
2
dB
dB
CH2
CH4
S21
S21
Ripple & Group Delay(Fo
±
6.1 MHz)
LOG
DEL
1 dB/
50 ns/
REF -8.2 dB
REF 915 ns
20 Nov 2013 16:31:04
3: . 00390 dB
12 . 200 000 MHz
3: -9 . 7469 ns
12 . 200 000 MHz
CH2 Markers
REF=2
mean : -8 . 3641 dB
s. dev : . 04240
p-p : . 21170
3
2
dB
dB
3
2
Cor
Smo
Cor
CH4 Markers
REF=24
mean : 884 . 60 ns
s. dev : 4. 7753 ns
p-p : 20 . 037 ns
Cor
2
Cor
Smo
3
CH4 Markers
REF=24
mean : 881 . 84 ns
s. dev : 5. 8296 ns
p-p : 28 . 189 ns
CENTER 126 . 000 000 MHz
SPAN
19 . 000 000 MHz
2
CENTER 126 . 000 000 MHz
SPAN
19 . 000 000 MHz
2
Ripple & Group Delay(Fo
±
7.0 MHz)
CH2
CH4
S21
S21
LOG
DEL
1 dB/
50 ns/
REF -8.2 dB
REF 894 ns
20 Nov 2013 16:31:32
3: - . 07460 dB
14 . 000 000 MHz
3: -45 . 523 ns
14 . 000 000 MHz
CH2 Markers
REF=2
mean : -8 . 3909 dB
s. dev : . 09490
p-p : . 64800
dB
dB
CH1
S21
LOG
Wide band Properties
10 dB/
REF -8.2 dB
20 Nov 2013 16:32:56
1: 0. 0000 dB
0. 000 000 MHz
1
CH1 Markers
REF=1
2: -35 . 456 dB
126 . 000 MHz
3: -36 . 228 dB
252 . 000 MHz
4: -70 . 463 dB
378 . 000 MHz
3
2
2
2
3
4
3
Cor
Smo
Cor
CH4 Markers
REF=2
mean : 880 . 22 ns
s. dev : 8. 4385 ns
p-p : 48 . 989 ns
4
CENTER 126 . 000 000 MHz
SPAN
19 . 000 000 MHz
2
START
. 010 000 MHz
STOP 600 . 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
http://www.itf.co.kr
sales@itf.co.kr
2013. 11. 20
Rev 2.0
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