
3
Oct 18, 2000
SAW Components
Low-Loss Filter
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B3663
140,01 MHz
T
Z
S
= 50
unbalanced and matching network
Z
L
= 50
unbalanced and matching network
= -10 ... +80 C
1)
Temperature dependance of f
c
:
f
c
(T) = f
c
(T
0
)(1 + TC
f
(T – T
0
)
2
)
Matching network
(element values depend on pcb layout, optimized for test board)
L
s1
= 180 nH C
p2
= 3,3 pF C
p3
= 2,7 pF L
s4
= 180 nH
min.
—
typ.
max.
—
Nominal frequency
f
N
140,010
MHz
Minimum insertion loss
α
min
—
3,7
5,5
dB
3dB bandwidth
30
73
—
kHz
Amplitude variation
(p-p)
f
N
- 15 kHz ... f
N
+ 15 kHz
Amplitude ripple
(peak to adjacent valley)
f
N
- 15 kHz ... f
N
+ 15 kHz
α
—
0,3
3,0
dB
α
—
0,0
0,5
dB
Absolute group delay
(at f
N
)
τ
—
11
15
μ
s
Group delay ripple
(p-p)
f
N
- 15 kHz ... f
N
+ 15 kHz
τ
—
2
6
μ
s
Relative attenuation
(relative to
α
min
)
f
N
±
60 kHz
f
N
±
120 kHz
f
N
±
210 kHz
f
N
1 MHz
f
N
+
1 MHz
α
rel
4
20
45
67
73
68
—
—
—
—
—
dB
dB
dB
dB
dB
25
45
68
48
Temperature coefficient of frequency
1)
TC
f
T
0
—
– 0,036
—
ppm/K
2
Turnover temperature
—
35
—
C