SAW Components
IF Filter for Video Applications
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
M 3951 M
45,75 MHz
T
A
= 25 (45) ˚C
Z
S
= 50
Ω
Z
L
= 2 kΩ || 3 pF
min.
typ.
12,0
max.
13,5
dB
Insertion attenuation
Reference level for the
following data
α
44,06 (44,00) MHz
10,5
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
1,1
µs
... 6,0
µs
after main pulse
(test pulse 250 ns,
carrier frequency 44,06 MHz)
Feedthrough signal suppression
1,2
µs
... 1,1
µs
before main pulse
(test pulse 250 ns,
carrier frequency 44,06 MHz)
α
rel
MHz
MHz
MHz
MHz
MHz
MHz
MHz
4,9
1,2
25,0
48,0
46,0
38,0
36,0
5,9
2,2
32,0
61,0
56,0
42,0
41,0
6,9
3,2
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
42,0
52,0
—
dB
50,0
56,0
—
dB
Group delay predistortion
∆τ
(reference frequency: 45,81 MHz)
42,81 (42,75) MHz
42,23 (42,17) MHz
Group delay ripple
(p-p)
Impedance
at 44,06 MHz
Input:
Z
IN
=
R
IN
||
C
IN
Output:
Z
OUT
=
R
OUT
||
C
OUT
Temperature coefficient of frequency
∆τ
—
—
—
–10
–40
40
—
—
—
ns
ns
ns
—
—
1,4 || 10,8
0,9 || 4,4
–72
—
—
—
kΩ || pF
kΩ || pF
ppm/K
TC
f
—
3
Mar 31, 2006
EPCOS [ EPCOS ]
