SAW Components
Bandpass Filter
Data Sheet
X 6965 M
44,00 MHz
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
TA = 25 (45) ˚C
ZS = 50 Ω
ZL = 2 kΩ || 3 pF
min.
typ.
max.
Center frequency
fC
—
44,00
—
MHz
(center between 3 dB points)
Insertion attenuation
α
Reference level for the
following data
44,06 (44,00) MHz
12,9
14,4
15,9 dB
Pass bandwith
αrel ≤3 dB
B3dB
B30dB
∆α
—
—
6,0
7,6
—
—
MHz
αrel ≤30 dB
MHz
Amplitude ripple
Aperture: 250 kHz
Relative attenuation
41,53 ... 46,59 MHz
—
0,4
0,8 dB
αrel
41,53 (41,47) MHz
46,59 (46,53) MHz
41,06 (41,00) MHz
47,06 (47,00) MHz
47,31 (47,25) MHz
39,81 (39,75) MHz
—
0,4
0,4
—
—
dB
dB
—
1,8
1,5
—
3,0
4,2 dB
3,9 dB
2,7
6,2
—
dB
dB
40,0
52,0
—
Lower sidelobe
35,06 ... 39,46 (35,00 ... 39,40) MHz
39,46 ... 40,06 (39,40 ... 40,00) MHz
44,0
38,0
50,0
44,0
—
—
dB
dB
Upper sidelobe
48,06 ... 50,06 (48,00 ... 50,00) MHz
50,06 ... 55,06 (50,00 ... 55,00) MHz
36,0
42,0
43,0
48,0
—
—
dB
dB
Reflected wave signal suppression
1,3 µs ... 6,0 µs after main pulse
(test pulse 250 ns,
42,0
50,0
—
52,0
56,0
20
—
—
40
dB
dB
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 ripple (p-p)
∆τ
Aperture 250 kHz
41,53 ... 46,59 MHz
Impedance at 44,06 MHz
Input: ZIN = RIN || CIN
—
—
1,3 ||16,1
1,1 || 5,6
—
—
kΩ || pF
kΩ || pF
Output: ZOUT = ROUT || COUT
TCf
—
–72
—
ppm/K
Temperature coefficient of frequency
3
Mar 31, 2006
EPCOS [ EPCOS ]
