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74.7625 MHz SAW Filter  
Part Number  
231503B  
1. Features  
ꢀ
ꢀ
ꢀ
ꢀ
Typical 1dB bandwidth of 15.4 MHz  
High attenuation  
Single Ended Operation  
Dual Inꢀline Package (DIP)  
2. Electrical Specifications  
Source and Load Impedance = 50ꢁ  
Minimum  
Typical  
74.7625  
23.5  
15.4  
15.6  
16.34  
16.54  
0.6  
Maximum  
Operating Temperature : -30℃ ~ +80℃  
Center Frequency (fo)  
Insertion Loss  
MHz  
dB  
ꢀ
ꢀ
ꢀ
25.0  
1dB Bandwidth  
MHz  
MHz  
MHz  
MHz  
dB  
15.25  
ꢀ
3dB Bandwidth  
ꢀ
ꢀ
ꢀ
25dB Bandwidth  
16.45  
40dB Bandwidth  
ꢀ
ꢀ
1.0  
120  
ꢀ
Amplitude Ripple (fo ± 7.2375 MHz)  
Group Delay Variation (fo ± 7.2375 MHz)  
Absolute Delay  
ꢀ
nsec  
usec  
dB  
ꢀ
60  
ꢀ
2.9  
Ultimate Rejection  
48  
ꢀ
52  
ꢀ
Temperature Coefficient of Frequency  
ppm/℃  
ꢀ72  
ꢀ
Room Temperature : +25℃  
Minimum  
Typical  
23.5  
0.6  
Maximum  
25.0  
Insertion Loss  
dB  
dB  
ꢀ
ꢀ
ꢀ
Amplitude Ripple (fo ± 7.54 MHz)  
Group Delay Variation (fo ± 7.54 MHz)  
Out of Band gain  
1.0  
nsec  
60  
120  
@BW Edge ± 1.0 MHz  
dB  
25  
33  
ꢀ
1. @BW Edge : 14.475MHz  
2. Input POWER : +10dBm  
D3512 Package Dimension  
Matching Schematic  
12.8±0.5  
5.5max 6.0max  
7.6±0.2  
1
5
L1  
L2  
Input  
50  
Output  
50Ω  
Ω
C1  
C2  
L1 = 100nH, L2 =120nH, C1 = 30pF, C2 = 33pF  
Pin Configuration  
Dimensions shown are nominal in millimeters  
Input  
1
5
Ground  
Others  
2,4  
Base : Fe(SPCC), Au plating over Ni plated  
Cap : Cu & Cr Alloy, Ni Plated  
Termination : Kovar, Au Plated  
Output  
Ground  
I T F Co., Ltd.  
102ꢀ901, Bucheon Technopark 364, SamjeongꢀDong,  
OjeongꢀGu, BucheonꢀCity,  
Tel: 82-32-621-1213  
Fax: 82-32-621-1218  
http://www.itf.co.kr  
sales@itf.co.kr  
2013. 04. 01  
Rev 1.0  
GyounggiꢀDo, Korea 421ꢀ809  
74.7625 MHz SAW Filter  
Part Number  
231503B  
3. Typical Performance ( at +25℃ )  
1dB Bandwidth & Ripple  
25dB Bandwidth & 40dB Bandwidth  
29 May 2012 15:44:58  
29 May 2012 16:49:15  
CH1 S21  
CH2 S21  
LOG  
LOG  
1 dB/ REF -22.92 dB  
1 dB/ REF -23.39 dB  
1: 0. 0000 dB  
3:-. 06460 dB  
0. 000 000 MHz  
15. 080 000 MHz  
CH1 S21  
CH2 S21  
LOG  
LOG  
10 dB/ REF -23.17 dB  
10 dB/ REF -23.17 dB  
1: 0. 0000 dB  
1: 0. 0000 dB  
0. 000 000 MHz  
0. 000 000 MHz  
*
CH1 Markers  
CH1 Markers  
REF=1  
REF=1  
BW: 15. 396559 MHz  
BW: 16. 340493 MHz  
cent  
:
74. 764828 MHz  
Q: 4. 8559  
1
2
cent  
:
74. 750048 MHz  
Q: 4. 5745  
Cor  
Cor  
1_loss  
:
-23 . 267 dB  
1_loss : -23 . 165 dB  
1
2
3
2
4
3
3
4
4
3
CH2 Markers  
REF=2  
mean:-23 . 186 dB  
s. dev : . 11840 dB  
p-p : . 55720 dB  
CH2 Markers  
REF=1  
BW: 16. 541544 MHz  
Cor  
Cor  
cent  
:
74. 751245 MHz  
Q: 4. 5190  
1_loss  
: -23 . 165 dB  
START 65. 267 500 MHz  
STOP 84. 267 500 MHz  
CENTER 74. 767 500 MHz  
SPAN 50. 000 000 MHz  
3dB Bandwidth & Group Delay  
Out of Band gain  
29 May 2012 15:45:31  
29 May 2012 16:48:36  
1: 0. 0000 dB 0. 000 000 MHz  
CH1 S21  
CH2 S21  
LOG  
DEL  
1 dB/ REF -22.92 dB  
100 ns/ REF 2.853 us  
1: 0. 0000 dB  
3:-997 . 72 ps  
0. 000 000 MHz  
15. 080 000 MHz  
CH1 S21  
*
LOG  
10 dB/ REF -23.17 dB  
CH1 Markers  
CH1 Markers  
REF=1  
REF=1  
BW: 15. 604674 MHz  
2: . 27580 dB  
-7 . 23750 MHz  
1
cent  
:
74. 761160 MHz  
Q: 4. 7909  
Cor  
Cor  
3:-30 . 486 dB  
-8 . 23750 MHz  
2
4
1_loss  
:
-23 . 264 dB  
4: . 10700 dB  
7. 23750 MHz  
1
2
5:-37 . 363 dB  
8. 23750 MHz  
3
3
5
2
3
Smo  
Cor  
CH2 Markers  
REF=2  
mean: 2. 9053 us  
4
s. dev : 9. 7654 ns  
p-p  
: 56. 377 ns  
CENTER 74. 767 500 MHz  
SPAN 19. 000 000 MHz  
CENTER 74. 767 500 MHz  
SPAN 50. 000 000 MHz  
Wideband Properties  
SWR(S11 & S22)  
29 May 2012 15:47:14  
1: 0. 0000 dB 0. 000 000 MHz  
29 May 2012 15:46:20  
1: 5. 0994 74. 767 500 MHz  
2: 4. 7139 74. 767 500 MHz  
CH1 S21  
LOG  
10 dB/ REF -24.97 dB  
CH1 S11  
CH2 S22  
SWR  
SWR  
10  
10  
/
/
REF 5.095  
REF 4.71  
CH1 Markers  
REF=1  
2:-74 . 538 dB  
74. 7675 MHz  
Cor  
3:-70 . 454 dB  
149. 535 MHz  
1
1
Cor  
2
START . 010 000 MHz  
STOP 300. 000 000 MHz  
3
CENTER 74. 767 500 MHz  
SPAN 50. 000 000 MHz  
2
I T F Co., Ltd.  
102ꢀ901, Bucheon Technopark 364, SamjeongꢀDong,  
OjeongꢀGu, BucheonꢀCity,  
Tel: 82-32-621-1213  
Fax: 82-32-621-1218  
http://www.itf.co.kr  
sales@itf.co.kr  
2013. 04. 01  
Rev 1.0  
GyounggiꢀDo, Korea 421ꢀ809