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70.0 MHz SAW Filter  
Part Number  
231553B  
1. Features  
ꢀ
ꢀ
ꢀ
ꢀ
Typical 1dB bandwidth of 15.0 MHz  
High attenuation  
Single Ended Operation  
Surface Mounted Package (SMD)  
2. Electrical Specifications  
Source and Load Impedance = 50Ω  
Operating Temperature : +25℃  
Minimum  
Typical  
70.0  
23.8  
15.07  
15.5  
17.3  
0.45  
35  
Maximum  
Center Frequency (fo)  
Insertion Loss  
MHz  
dB  
-
-
25.0  
-
-
1dB Bandwidth  
MHz  
MHz  
MHz  
dB  
14.9  
3dB Bandwidth  
-
-
-
40dB Bandwidth  
17.5  
1.0  
70  
-
Amplitude Ripple (fo ± 7.2 MHz)  
Group Delay Variation (fo ± 7.2 MHz)  
Absolute Delay  
-
nsec  
usec  
dB  
-
-
1.67  
50  
Ultimate Rejection  
45  
-
Relative attenuation  
Fo ± 8.3MHz  
dB  
-
-
16  
-
-
Temperature Coefficient of Frequency  
ppm/℃  
-72  
S1365 Package Dimension  
Matching Schematic  
L1  
L2  
13.30±0.2  
7.62±0.1  
11  
5
Input  
50  
Output  
50Ω  
10  
9
8
7
7
8
9
10  
Ω
11  
12  
6
5
6
5
11  
12  
ITF 13A001  
252508B  
C1  
1.50±0.1  
。185-24.6M  
4
3
2
1
1
2
3
4
2.54±0.1  
0.80±0.1  
L1 = L2 = 120nH, C1 = 18pF  
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  
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,  
Tel: 82-32-621-1213  
Fax: 82-32-621-1218  
http://www.itf.co.kr  
sales@itf.co.kr  
2013. 03. 25  
Rev 1.0  
Gyounggi-Do, Korea 421-809  
70.0 MHz SAW Filter  
Part Number  
231553B  
3. Typical Performance ( at +25℃ )  
1dB Bandwidth & Ripple  
40dB Bandwidth  
10 Jun 2008 16:30:00  
10 Jun 2008 16:29:26  
CH1 S21  
CH2 S21  
LOG  
LOG  
1 dB/ REF -23.61 dB  
1 dB/ REF -23.71 dB  
1: 0. 0000 dB  
3: . 12310 dB  
0. 000 000 MHz  
14. 400 000 MHz  
CH1 S21  
LOG  
10 dB/ REF -23.74 dB  
1: 0. 0000 dB  
0. 000 000 MHz  
*
CH1 Markers  
BW: 15. 069586 MHz  
CH1 Markers  
BW: 17. 302844 MHz  
REF=1  
REF=1  
1
2
Cor  
Cor  
cent  
:
69. 998502 MHz  
Q: 4. 6450  
cent  
:
70. 000698 MHz  
Q: 4. 0456  
1_loss  
: -23 . 878 dB  
1
2
1_loss  
: -23 . 877 dB  
Hld  
3
3
2
4
3
4
Cor  
CH2 Markers  
REF=2  
mean:-23 . 808 dB  
s. dev : . 09040 dB  
p-p : . 45150 dB  
CENTER 70. 000 000 MHz  
SPAN 18. 000 000 MHz  
CENTER 70. 000 000 MHz  
SPAN 45. 000 000 MHz  
3dB Bandwidth & Group Delay  
Relative attenuation  
10 Jun 2008 16:30:11  
7 Jul 2008 10:13:38  
1: 0. 0000 dB 0. 000 000 MHz  
CH1 S21  
CH2 S21  
LOG  
DEL  
1 dB/ REF -23.61 dB  
100 ns/ REF 1.654 us  
1: 0. 0000 dB  
3: 3. 5604 ns  
0. 000 000 MHz  
14. 400 000 MHz  
CH1 S21  
*
LOG  
10 dB/ REF -24.09 dB  
CH1 Markers  
BW: 15. 494228 MHz  
CH1 Markers  
REF=1  
REF=1  
1
2:-16 . 863 dB  
8. 30000 MHz  
Cor  
Cor  
cent  
:
70. 004796 MHz  
Q: 4. 5181  
3:-16 . 636 dB  
-8 . 30000 MHz  
1_loss  
: -23 . 871 dB  
1
2
3
2
Hld  
3
2
Smo  
Cor  
3
4
CH2 Markers  
REF=2  
mean: 1. 6731 us  
s. dev : 6. 6244 ns  
p-p  
: 34. 502 ns  
CENTER 70. 000 000 MHz  
SPAN 18. 000 000 MHz  
CENTER 70. 000 000 MHz  
SPAN 45. 000 000 MHz  
Wide band Properties  
SWR(S11 & S22)  
10 Jun 2008 16:31:21  
1: 0. 0000 dB 0. 000 000 MHz  
10 Jun 2008 16:30:55  
1: 9. 1113  
2: 7. 7095  
CH1 S21  
LOG  
10 dB/ REF -23.01 dB  
CH1 S11  
CH2 S22  
SWR  
SWR  
10  
10  
/
/
REF 9.135  
REF 7.684  
70. 000 000 MHz  
70. 000 000 MHz  
CH1 Markers  
REF=1  
2:-64 . 571 dB  
70. 0000 MHz  
Cor  
3:-33 . 093 dB  
140. 000 MHz  
1
1
3
Cor  
2
2
START . 010 000 MHz  
STOP 300. 000 000 MHz  
CENTER 70. 000 000 MHz  
SPAN 45. 000 000 MHz  
I T F Co., Ltd.  
102-901, Bucheon Technopark 364, Samjeong-Dong,  
Ojeong-Gu, Bucheon-City,  
Tel: 82-32-621-1213  
Fax: 82-32-621-1218  
http://www.itf.co.kr  
sales@itf.co.kr  
2013. 03. 25  
Rev 1.0  
Gyounggi-Do, Korea 421-809