SAW Components
IF Filter for Quasi/Split Sound Applications
Data Sheet
Characteristics of picture channel
Reference temperature:
Terminating source impedance:
Terminating load impedance:
M 3568 M
45,75 MHz
T
A
= 25 (45) ˚C
Z
S
= 50
Ω
Z
L
= 2 kΩ || 3 pF
min.
typ.
13,8
max.
15,3
dB
Insertion attenuation
Reference level for the
following data
α
44,06 (44,00) MHz
12,3
Relative attenuation
Picture carrier
45,81 (45,75)
Color carrier
42,23 (42,17)
Sound carrier
41,31 (41,25)
Adjacent picture carrier
39,81 (39,75)
Adjacent sound carrier
47,31 (47,25)
Lower sidelobe
35,06 ... 39,81 (35,00 ... 39,75)
Upper sidelobe
47,31 ... 55,06 (47,25 ... 55,00)
Reflected wave signal suppression
1,2
µs
... 6,0
µs
after main pulse
(test pulse 250 ns,
carrier frequency 44,06 MHz)
Feedthrough signal suppression
1,3
µs
... 1,2
µs
before main pulse
(test pulse 250 ns,
carrier frequency 44,06 MHz)
Group delay predistortion
(reference frequency 45,75 MHz)
α
rel
MHz
MHz
MHz
MHz
MHz
MHz
MHz
4,9
1,4
34,0
50,0
42,0
41,0
36,0
5,9
2,4
43,0
65,0
52,0
45,0
42,0
6,9
3,4
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
42,0
52,0
—
dB
50,0
56,0
—
dB
∆τ
—
—
50
40
—
—
42,23 (42,17) MHz
Group delay ripple
(p-p)
43,06 ... 45,81 (43,00 ... 45,75) MHz
∆τ
Impedance
at 44,06 MHz
Input:
Z
IN
=
R
IN
||
C
IN
Output:
Z
OUT
=
R
OUT
||
C
OUT
Temperature coefficient of frequency
ns
ns
—
—
1,1 ||19,1
1,6 || 3,1
–72
—
—
—
kΩ || pF
kΩ || pF
ppm/K
TC
f
3
—
Mar 31, 2006
EPCOS [ EPCOS ]
