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74.76 MHz SAW Filter  
Part Number 231601B  
1. Features  
ꢀ
ꢀ
ꢀ
ꢀ
Typical 1dB bandwidth of 15.6 MHz  
High attenuation  
Single Ended Operation  
Dual In-line Package (DIP)  
2. Electrical Specifications  
Operating Temperature : -30℃ ~ +85℃  
Source and Load Impedance = 50Ω  
Minimum  
Typical  
74.76  
20.5  
15.62  
16.0  
17.71  
0.5  
Maximum  
-
-
Center Frequency (fo)  
Insertion Loss  
MHz  
dB  
-
22.0  
15.50  
-
1dB Bandwidth  
3dB Bandwidth  
40dB Bandwidth  
Amplitude Ripple (Fo±7.24MHz)  
Group Delay Variation (Fo±7.24MHz)  
Absolute Delay  
MHz  
MHz  
MHz  
dB  
nsec  
usec  
dB  
-
-
-
17.85  
-
1.0  
80  
-
-
40  
-
1.95  
55  
50  
-
-
Ultimate Rejection  
-72  
-
Temperature Coefficient of Frequency  
ppm/℃  
Room Temperature : +25℃  
Insertion Loss  
Amplitude Ripple (Fo±7.55MHz)  
Group Delay Variation (Fo±7.55MHz)  
Minimum  
Typical  
20.5  
0.5  
Maximum  
-
-
-
22.0  
1.0  
80  
dB  
dB  
nsec  
40  
D2012 Package Dimension  
Matching Schematic  
5
1
L1  
L2  
12.7±0.5  
5.5max 6.0max  
7.6±0.2  
Input  
50  
Output  
Ω
50Ω  
C1  
C2  
L1 = 100nH, L2 = 120nH, C1 = C2 = 10pF  
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.  
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. 07  
Rev 1.0  
Gyounggi-Do, Korea 421-809  
74.76 MHz SAW Filter  
Part Number 231601B  
3. Typical Performance ( at +25℃ )  
1dB Bandwidth & Ripple  
40dB Bandwidth  
15 May 2012 16:03:39  
15 May 2012 16:02:13  
CH1 S21  
CH2 S21  
LOG  
LOG  
1 dB/ REF -20.34 dB  
1 dB/ REF -20.72 dB  
1: 0. 0000 dB  
3:-. 12260 dB  
0. 000 000 MHz  
15. 100 000 MHz  
CH1 S21  
LOG  
10 dB/ REF -20.5 dB  
1: 0. 0000 dB  
0. 000 000 MHz  
CH1 Markers  
CH1 Markers  
REF=1  
REF=1  
BW: 15. 627053 MHz  
BW: 17. 718377 MHz  
1
2
cent  
:
74. 686399 MHz  
Q: 4. 7793  
Cor  
Cor  
cent  
:
74. 673050 MHz  
Q: 4. 2144  
1_loss  
: -20 . 507 dB  
1
1_loss  
: -20 . 532 dB  
2
3
4
3
2
CH2 Markers  
REF=2  
3
4
Cor  
mean:-20 . 474 dB  
s. dev : . 08850 dB  
p-p : . 49830 dB  
CENTER 74. 760 000 MHz  
SPAN 20. 000 000 MHz  
CENTER 74. 760 000 MHz  
SPAN 55. 000 000 MHz  
3dB Bandwidth & Group Delay  
50dB Bandwidth  
15 May 2012 16:03:57  
15 May 2012 16:02:22  
1: 0. 0000 dB 0. 000 000 MHz  
CH1 S21  
CH2 S21  
LOG  
DEL  
1 dB/ REF -20.34 dB  
100 ns/ REF 2.019 us  
1: 0. 0000 dB  
3:-5 . 7985 ns  
0. 000 000 MHz  
15. 100 000 MHz  
CH1 S21  
LOG  
10 dB/ REF -20.5 dB  
CH1 Markers  
CH1 Markers  
REF=1  
REF=1  
BW: 16. 025190 MHz  
BW: 17. 888933 MHz  
1
2
cent  
:
74. 677446 MHz  
Q: 4. 6600  
Cor  
Cor  
cent  
:
74. 664013 MHz  
Q: 4. 1738  
1_loss  
: -20 . 507 dB  
1
1_loss  
: -20 . 532 dB  
2
3
2
3
Smo  
Cor  
CH2 Markers  
REF=2  
4
mean: 1. 9565 us  
s. dev : 6. 5625 ns  
p-p : 40. 207 ns  
3
4
CENTER 74. 760 000 MHz  
SPAN 20. 000 000 MHz  
CENTER 74. 760 000 MHz  
SPAN 55. 000 000 MHz  
Wide band Properties  
SWR(S11 & S22)  
15 May 2012 16:11:56  
15 May 2012 16:10:32  
1: 5. 3980  
1: 5. 2284  
CH1 S21  
LOG  
10 dB/ REF -21.99 dB  
1: 0. 0000 dB  
0. 000 000 MHz  
CH1 S11  
CH2 S22  
SWR  
SWR  
10  
10  
/
/
REF 5.475  
REF 5.238  
75. 000 000 MHz  
75. 000 000 MHz  
CH1 Markers  
REF=1  
2:-60 . 243 dB  
74. 7600 MHz  
Cor  
3:-61 . 122 dB  
149. 520 MHz  
1
1
Cor  
1
2
3
START . 010 000 MHz  
STOP 250. 000 000 MHz  
CENTER 74. 670 000 MHz  
SPAN 55. 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. 07  
Rev 1.0  
Gyounggi-Do, Korea 421-809