Preliminary Data Sheet
Operating Temperature Range:
(2)
0 to +70
o
C
Part Number 856066
140 MHz SAW Filter
Electrical Specifications
(1)
Parameter
(3)
Center Frequency
Minimum Insertion Loss
Lower 1 dB Bandedge
(4)
Upper 1 dB Bandedge
Lower 3 dB Bandedge
(4)
Upper 3 dB Bandedge
Lower 40 dB Bandedge
(4)
Upper 40 dB Bandedge
Amplitude Variation
137.28 - 142.72 MHz
Phase Linearity
137.28 - 142.72 MHz
Group Delay Variation
137.28 - 142.72 MHz
Absolute Delay
Relative Attenuation
(4)
15 - 135 MHz
145 - 350 MHz
Source Impedance
(5)
Load Impedance
(5)
Substrate Material
Temperature Coefficient of Frequency
Notes:
1.
2.
3.
4.
5.
All specifications are based on the test circuit shown below
In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over
temperature
Electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances
All attenuation measurements are measured relative to minimum insertion loss
This is the optimum impedance in order to achieve the performance shown
Minimum
-
-
-
142.72
-
143
135.83
-
-
-
-
-
50
50
-
-
-
-
Typical
140
23
137.1
142.9
136.9
143.1
136
144
0.5
2.0
45
1.6
60
60
50
50
LiTaO
3
-23
Maximum
-
24.5
137.28
-
137
-
-
144.17
0.9
3.0
70
-
-
-
-
-
-
-
Unit
MHz
dB
MHz
MHz
MHz
MHz
MHz
MHz
dB
deg
nsec
µsec
dB
dB
Ω
Ω
-
ppm/
o
C
Test Circuit:
Actual matching values may vary due to PCB layout and parasitics
36pF
10
5
47pF
1,2,3,4,6,7,8,9
50Ω
12nH
50Ω
Single-ended
50Ω
47nH
Subject to change or obsolescence without notice
Rev A
11-Jul-2002
Page 2 of 5
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