SAW Components
IF Filter for Video Applications
Data Sheet
G 3962 M
38,90 MHz
Characteristics
Reference temperature:
TA = 25 ˚C
Terminating source impedance:
Terminating load impedance:
ZS = 50 Ω
ZL = 2 kΩ || 3 pF
min.
typ.
max.
α
Insertion attenuation
Reference level for the
following data
37,40 MHz
12,0
13,5
15,0 dB
Relative attenuation
Picture carrier
αrel
38,90 MHz
34,47 MHz
33,40 MHz
30,90 MHz
31,90 MHz
32,40 MHz
40,15 MHz
40,40 MHz
41,40 MHz
4,6
2,0
5,6
3,0
6,6 dB
4,0 dB
Color carrier
Sound carrier
42,0
46,0
48,0
44,0
37,0
44,0
42,0
40,0
36,0
54,0
55,0
59,0
50,0
43,0
52,0
48,0
44,0
41,0
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
Adjacent picture carrier UHF
VHF
Adjacent sound carrier VHF
UHF
Lower sidelobe
Upper sidelobe
25,00 ... 31,90 MHz
40,40 ... 45,00 MHz
Reflected wave signal suppression
1,1 µs ... 6,0 µs after main pulse
(test pulse 250 ns,
42,0
50,0
50,0
56,0
—
—
dB
dB
carrier frequency 37,40 MHz)
Feedthrough signal suppression
1,2 µs ... 1,0 µs before main pulse
(test pulse 250 ns,
carrier frequency 37,40 MHz)
Group delay predistortion
∆τ
(reference frequency 38,90 MHz)
36,70 MHz
34,47 MHz
—
—
–85
15
—
—
ns
ns
Impedance at 37,40 MHz
Input: ZIN = RIN || CIN
—
—
1,6 ||14,2
1,3 || 5,7
—
—
kΩ || pF
kΩ || pF
Output: ZOUT = ROUT || COUT
TCf
—
–72
—
ppm/K
Temperature coefficient of frequency
3
May 08, 2001