Data Sheet
Part Number 856234
183.6 MHz SAW Filter
Subject to change or obsolescence without notice Rev B 04-Mar-2003 Page 2 of 5
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-30 to +85
o
C
Parameter
(3)
Minimum Typical Maximum Unit
Center Frequency, f
0
- 183.6 - MHz
Insertion Loss at 183.6 MHz
Excluding losses due to matching
Including losses in matching test circuit shown below
-
-
7.4
9.8
9.2
11.6
dB
dB
Lower 5 dB Point
Upper 5 dB Point
-
184.230
182.893
184.311
182.970
-
MHz
MHz
Amplitude Variation
183.3 - 183.9 MHz
-
0.4
1.25
dB p-p
RMS Phase Variation
182.97 - 184.23 MHz
-
1.6
3.2
deg RMS
Attenuation
(4)
f
0
- 2.05 MHz
f
0
- 1.70 MHz
f
0
- 1.25 MHz
f
0
- 0.90 MHz
f
0
+ 0.90 MHz
f
0
+ 1.25 MHz
f
0
+ 1.70 MHz
f
0
+ 2.05 MHz
33
33
33
33
33
33
33
33
45
40
40
38
40
36
40
40
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
Rejection
(4)
10.0 - 171.6 MHz
171.6 - 174.6 MHz
174.6 - 182.7 MHz
184.5 - 192.6 MHz
192.6 - 195.6 MHz
195.6 - 367.2 MHz
45
38
33
33
38
45
60
50
38
36
48
50
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
Optimal Source Impedance
(5)
-
800Ω||49nH
-
Ω
Optimal Load Impedance
(5)
-
380Ω||39.5nH
-
Ω
Notes:
1. All specifications are based on the test circuit shown below
2. In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over
temperature
3. Electrical margin has been built into the design to account for the variations due to manufacturing tolerances
4. Relative to insertion loss at 183.6 MHz
5. This is the complex conjugate of the unmatched filter’s impedance resulting in maximum power transfer
Test Circuit:
Actual matching values may vary due to PCB layout and parasitics
1000Ω
Single-ended
input
1000
47pF
47nH
120pF
120pF
43nH
500
0.5pF
9
5
4
1,2,3
6,7,8,10
Ω
Ω
500Ω
Balanced
output
