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45.0 MHz SAW Filter  
Part Number  
210951B  
1. Features  
ꢀ
ꢀ
ꢀ
ꢀ
Typical 1dB bandwidth of 9.3 MHz  
High attenuation  
Single Ended Operation  
Surface Mounted Package (SMD)  
2. Electrical Specifications  
Source and Load Impedance = 50Ω  
Room Temperature : +25℃  
Minimum  
Typical  
45.0  
24.5  
9.31  
9.61  
10.88  
0.55  
50  
Maximum  
Center Frequency (fo)  
Insertion Loss  
MHz  
dB  
-
-
-
26.0  
1dB Bandwidth  
MHz  
MHz  
MHz  
dB  
9.15  
-
3dB Bandwidth  
-
-
-
45dB Bandwidth  
11.00  
Amplitude Ripple (Fo±4.50MHz)  
Group Delay Variation (Fo±4.50MHz)  
Absolute Delay  
-
1.2  
nsec  
usec  
dB  
-
100  
-
2.37  
48  
-
-
-
Ultimate Rejection  
45  
-
Temperature Coefficient of Frequency  
Substrate Material  
ppm/℃  
-
-72  
128-LN  
* Input POWER : 10dBm  
S2098 Package Dimension  
Matching Schematic  
20.00±0.2  
7.62±0.1  
7 8  
10  
5
10  
8
6
9
7
9
10  
6
L1  
L2  
Input  
50  
Output  
50  
Ω
Ω
C1  
5
4
3
2
1
1
2
3
4
5
1.02±0.1  
1.91±0.1  
1.56±0.2  
L1 = L2 = 220nH, C1 = 36pF  
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  
10  
5
Ground  
Others  
1,6  
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  
2015. 06. 24  
Rev 1.0  
Gyounggi-Do, Korea 421-809  
45.0 MHz SAW Filter  
Part Number  
210951B  
3. Typical Performance ( at +25℃ )  
1dB Bandwidth & Ripple  
45dB Bandwidth  
18 Jan 2013 11:31:33  
18 Jan 2013 11:30:01  
CH1 S21  
CH2 S21  
LOG  
LOG  
1 dB/ REF -24.16 dB  
1 dB/ REF -24.54 dB  
1: 0. 0000 dB  
3:-. 03380 dB  
0. 000 000 MHz  
9. 000 000 MHz  
CH1 S21  
PRm  
LOG  
10 dB/ REF -24.2 dB  
1: 0. 0000 dB  
0. 000 000 MHz  
CH1 Markers  
REF=1  
CH1 Markers  
REF=1  
BW: 10. 880984 MHz  
PRm  
BW: 9. 317278 MHz  
1
2
cent  
:
44. 995361 MHz  
Q: 4. 8292  
cent  
:
44. 961774 MHz  
Q: 4. 1321  
1_loss  
:
-24 . 265 dB  
1_loss : -24 . 242 dB  
1
2
Cor  
C
3
4
3
PRm  
2
CH2 Markers  
REF=2  
mean:-24 . 362 dB  
s. dev : . 09550 dB  
p-p : . 53700 dB  
3
4
Cor  
CENTER 45. 000 000 MHz  
SPAN 11. 000 000 MHz  
CENTER 45. 000 000 MHz  
SPAN 33. 000 000 MHz  
3dB Bandwidth & Group Delay  
Smith Chart(S11 & S22)  
18 Jan 2013 11:31:50  
18 Jan 2013 11:32:09  
CH1 S21  
CH2 S21  
LOG  
DEL  
1 dB/ REF -24.16 dB  
100 ns/ REF 2.453 us  
1: 0. 0000 dB  
3:-20 . 189 ns  
0. 000 000 MHz  
9. 000 000 MHz  
CH1 S11  
CH2 S22  
1 U FS  
1 U FS  
1: 7. 5576  
2: 21. 625  
9. 0464  
-71 . 234  
31. 995 nH  
49. 650 pF  
45. 000 000 MHz  
45. 000 000 MHz  
CH1 Markers  
REF=1  
PRm  
PRm  
BW: 9. 611550 MHz  
cent  
:
44. 992858 MHz  
Q: 4. 6811  
1_loss  
: -24 . 273 dB  
1
2
Cor  
Cor  
1
3
PRm  
Smo  
PRm  
2
CH2 Markers  
mean: 2. 3791 us  
REF=2  
4
3
s. dev : 7. 8070 ns  
p-p  
: 39. 950 ns  
Cor  
Cor  
2
CENTER 45. 000 000 MHz  
SPAN 11. 000 000 MHz  
CENTER 45. 000 000 MHz  
SPAN 33. 000 000 MHz  
Wideband Properties  
SWR(S11 & S22)  
18 Jan 2013 11:33:11  
18 Jan 2013 11:32:20  
1: 6. 9443  
2: 7. 2983  
CH1 S21  
PRm  
LOG  
10 dB/ REF -24.18 dB  
1: 0. 0000 dB  
0. 000 000 MHz  
CH1 S11  
CH2 S22  
SWR  
SWR  
10  
10  
/
/
REF 6.922  
REF 7.304  
45. 000 000 MHz  
45. 000 000 MHz  
CH1 Markers  
PRm  
REF=1  
2:-62 . 501 dB  
45. 0000 MHz  
3:-46 . 097 dB  
90. 0000 MHz  
1
Cor  
1
PRm  
2
3
Cor  
2
START . 010 000 MHz  
STOP 180. 000 000 MHz  
CENTER 45. 000 000 MHz  
SPAN 33. 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  
2015. 06. 24  
Rev 1.0  
Gyounggi-Do, Korea 421-809