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SAW Bandpass Filter 205708B  
1. Features  
z
z
z
z
z
z
IF Bandpass Filter  
Low-Loss Filter  
Single-Ended Operation  
Ceramic Surface Mount Device (SMD) Package  
Maximum Storage Temperature Range : -40℃ ~ 85℃  
Electrostatics Sensitive Device (ESD)  
2. Package Dimensions  
13.30±0.2  
7.62±0.1  
10  
9
8
7
7
8
9
10  
11  
12  
6
5
11  
12  
6
5
ITF04A001  
205708B  
1.50±0.1  
4
3
2
2.54±0.1  
1
1
2
3
4
0.80±0.1  
Pad Configuration  
11  
5
Input  
Output  
Package : S1365  
6, 12  
Other  
Ground  
Dimensions shown are nominal in millimeters  
Case ground  
Body : Al2O3 Ceramic  
Lid : Kovar, Ni Plated  
Terminations : Au plating 0.3 ~ 1.0 um, Over a 1.27 ~ 8.89 um Ni Plating  
I T F Co., Ltd.  
102-901, Bucheon Technopark 364,  
Samjeong-Dong, Ojeong-Gu, Bucheon-City,  
Gyounggi-Do, Korea 421-809  
Part No.  
205708B  
Rev. Date  
Rev.  
2004-04-29  
1/5  
NI1031-CS03  
SAW Bandpass Filter 205708B  
3. Specifications  
Fo = 281.0 MHz  
Terminating source impedance : 50Ω and matching network  
Terminating load impedance  
: 50Ω and matching network  
Minimum  
Typical  
281.0  
11.8  
6.8  
Maximum  
Center Frequency  
MHz  
dB  
280.8  
281.2  
Insertion Loss  
-
-
13.5  
1dB Bandwidth  
MHz  
MHz  
MHz  
dB  
-
3dB Bandwidth  
7.7  
-
8.0  
-
13.5  
1.0  
100  
-
40dB Bandwidth  
13.0  
0.5  
Amplitude Ripple (Fo +/- 3.0 MHz)  
-
Group Delay Variation (Fo +/- 3.0 MHz)  
Absolute Delay  
nsec  
usec  
-
40  
-
0.62  
43  
Ultimate Rejection  
dB  
40  
-
-
Temperature Coefficient of Frequency  
ppm/°C  
-23  
-
Notes :  
1) All specifications are based on the matching schematic shown below  
2) All specifications are measured by Agilent Network analyzer and full 2 port calibration at room temperature  
3) All attenuation measurements are measured relative to insertion loss  
I T F Co., Ltd.  
Part No.  
Rev. Date  
Rev.  
205708B  
102-901, Bucheon Technopark 364,  
Samjeong-Dong, Ojeong-Gu, Bucheon-City,  
Gyounggi-Do, Korea 421-809  
2004-04-29  
2/5  
NI1031-CS03  
SAW Bandpass Filter 205708B  
4. Matching Schematic  
( Actual matching values may vary due to PCB layout and parasitics )  
C1  
Input  
50Ω  
Output  
50Ω  
L1  
L2  
C1 = 56 pF  
L1 = 12 nH,  
L2 = 10 nH  
5. Marking Configuration  
ITF1) 04A0012)  
205708B3)  
4)  
1) Manufacturer name  
2) Lot Number  
3) Part Number  
4) Pad Number 1 Index  
I T F Co., Ltd.  
Part No.  
205708B  
102-901, Bucheon Technopark 364,  
Samjeong-Dong, Ojeong-Gu, Bucheon-City,  
Gyounggi-Do, Korea 421-809  
Rev. Date  
Rev.  
2004-04-29  
3/5  
NI1031-CS03  
SAW Bandpass Filter 205708B  
6. Typical Performance ( at +25℃ )  
28 Apr 2004 09:25:19  
1: 0. 0000 dB 0. 000 000 MHz  
CH1 S21  
LOG  
10 dB/ REF -11.62 dB  
205708B  
*
CH1 Markers  
BW: 13. 056026 MHz  
REF=1  
1
2
Cor  
cent  
:
281 . 065222 MHz  
Q: 21. 528  
1_loss : -11 . 619 dB  
Hld  
3
4
CENTER 281 . 000 000 MHz  
SPAN 35. 000 000 MHz  
28 Apr 2004 09:27:13  
CH2 S21  
CH4 S21  
LOG  
DEL  
1 dB/ REF -11.58 dB  
100 ns/ REF 699.7 ns  
1: 0. 0000 dB  
3:-18 . 024 ns  
0. 000 000 MHz  
6. 000 000 MHz  
205708B  
CH2 Markers  
BW: 8. 078017 MHz  
REF=1  
cent  
:
281 . 033748 MHz  
Q: 34. 790  
1
2
1_loss : -11 . 571 dB  
3
2
CH4 Markers  
4
3
REF=2  
Cor  
mean: 616 . 78 ns  
s. dev : 6. 6374 ns  
p-p : 29. 628 ns  
Smo  
4
Cor  
2
CENTER 281 . 000 000 MHz  
SPAN 12. 000 000 MHz  
I T F Co., Ltd.  
102-901, Bucheon Technopark 364,  
Samjeong-Dong, Ojeong-Gu, Bucheon-City,  
Gyounggi-Do, Korea 421-809  
Part No.  
205708B  
Rev. Date  
Rev.  
2004-04-29  
4/5  
NI1031-CS03  
SAW Bandpass Filter 205708B  
28 Apr 2004 09:27:29  
28 Apr 2004 09:29:29  
CH2 S21  
CH4 S21  
LOG  
LOG  
1 dB/ REF -11.58 dB  
1 dB/ REF -11.89 dB  
1: 0. 0000 dB  
3: . 09770 dB  
0. 000 000 MHz  
6. 000 000 MHz  
CH1 S21  
LOG  
10 dB/ REF -12.88 dB  
1: 0. 0000 dB  
0. 000 000 MHz  
205708B  
205708B  
CH2 Markers  
BW: 6. 789747 MHz  
CH1 Markers  
REF=1  
REF=1  
1
2:-44 . 985 dB  
281 . 000 MHz  
cent  
:
280 . 954368 MHz  
Q: 41. 379  
3:-49 . 084 dB  
562 . 000 MHz  
1
1_loss  
: -11 . 560 dB  
2
3
4
3
2
CH4 Markers  
REF=2  
Cor  
Cor  
mean:-11 . 609 dB  
s. dev : . 08930 dB  
p-p : . 53780 dB  
2
3
24  
CENTER 281 . 000 000 MHz  
SPAN 12. 000 000 MHz  
START . 010 000 MHz  
STOP 900 . 000 000 MHz  
28 Apr 2004 09:28:42  
28 Apr 2004 09:28:11  
CH1 S11  
CH3 S22  
SWR  
SWR  
2
2
/
/
REF 0  
REF 0  
1: 2. 5109  
2: 1. 2751  
281 . 000 000 MHz  
281 . 000 000 MHz  
CH1 S11  
CH3 S22  
1 U FS  
1 U FS  
1: 63. 227  
2: 45. 785  
51. 936  
10. 898  
29. 416 nH  
6. 1727 nH  
281 . 000 000 MHz  
281 . 000 000 MHz  
205708B  
205708B  
Cor  
Cor  
Cor  
Cor  
1
2
1
2
CENTER 281 . 000 000 MHz  
SPAN 35. 000 000 MHz  
CENTER 281 . 000 000 MHz  
SPAN 35. 000 000 MHz  
I T F Co., Ltd.  
102-901, Bucheon Technopark 364,  
Samjeong-Dong, Ojeong-Gu, Bucheon-City,  
Gyounggi-Do, Korea 421-809  
Part No.  
Rev. Date  
Rev.  
205708B  
2004-04-29  
5/5  
NI1031-CS03