SAW Components
IF Filter for Video Applications
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
K 3953 M
33,90 MHz and 38,90 MHz
T
A
= 25 ˚C
Z
S
= 50
Ω
Z
L
= 2 kΩ || 3 pF
min.
typ.
13,5
max.
15,0
dB
Insertion attenuation
Reference level for the
following data
Relative attenuation
Picture carrier
Color carrier
Sound carrier
α
37,40 MHz
12,0
α
rel
38,90
33,90
34,47
33,40
32,90
32,40
30,90
31,90
40,15
40,40
41,40
40,90
25,00 ... 31,90
40,40 ... 45,00
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
5,0
6,3
—
20,0
—
—
48,0
48,0
36,0
48,0
46,0
46,0
45,0
38,0
6,0
7,5
1,3
24,0
54,0
63,0
62,0
59,0
40,0
59,0
60,0
59,0
52,0
44,0
7,0
8,7
—
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Adjacent picture carrier
Adjacent sound carrier
Lower sidelobe
Upper sidelobe
Reflected wave signal suppression
1,2
µs
... 6,0
µs
after main pulse
(test pulse 250 ns,
carrier frequency 37,40 MHz)
Feedthrough signal suppression
1,2
µs
... 1,1
µs
before main pulse
(test pulse 250 ns,
carrier frequency 37,40 MHz)
Group delay ripple
(p-p)
Impedance
at 37,40 MHz
Input:
Z
IN
=
R
IN
||
C
IN
Output:
Z
OUT
=
R
OUT
||
C
OUT
Temperature coefficient of frequency
∆τ
42,0
50,0
—
dB
50,0
56,0
—
dB
—
—
—
50
1,4 ||16,9
1,6 || 4,7
–72
—
—
—
—
ns
kΩ || pF
kΩ || pF
ppm/K
TC
f
—
3
Mar 31, 2006
EPCOS [ EPCOS ]
