3Feb 18, 2004
SAW Components M 1865 D
45,75 MHzIF Filter for Intercarrier Applications
Data Sheet
Characteristics
Reference temperature:
T
A= 25 (45) ˚C
Terminating source impedance:
Z
S= 50 Ω
Terminating load impedance:
Z
L= 2 kΩ || 3 pF
min. typ. max.
Insertion attenuation α
Reference level for the 44,06 (44,00) MHz 11,6 13,1 14,6 dB
following data
Relative attenuation αrel
Picture carrier 45,81 (45,75) MHz 4,3 5,3 6,3 dB
Color carrier 42,23 (42,17) MHz –0,7 0,3 1,3 dB
Sound carrier 41,31 (41,25) MHz 11,8 13,3 14,8 dB
Adjacent picture carrier 39,81 (39,75) MHz 43,0 56,0 — dB
Adjacent sound carrier 47,31 (47,25) MHz 43,0 53,0 — dB
Lower sidelobe
35,06 ... 39,81 (35,00 ... 39,75) MHz 37,0 43,0 — dB
Upper sidelobe
47,31 ... 55,06 (47,25 ... 55,00) MHz 37,0 43,0 — dB
Reflected wave signal suppression
1,2 µs ... 6,0 µs after main pulse 42,0 52,0 — dB
(test pulse 250 ns,
carrier frequency 44,06 MHz)
Feedthrough signal suppression
1,0 µs ... 0,9 µs before main pulse 50,0 56,0 — dB
(test pulse 250 ns,
carrier frequency 44,06 MHz)
Group delay ripple (p-p) ∆τ —50—ns
Impedance at 44,06 MHz
Input:
Z
IN =
R
IN ||
C
IN — 1,1 ||14,7 — kΩ || pF
Output:
Z
OUT =
R
OUT ||
C
OUT —1,4 || 3,1 —kΩ || pF
Temperature coefficient of frequency
TC
f— –72 — ppm/K