SAW Components
Bandpass Filter
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
X 6965 M
44,00 MHz
T
A
= 25 (45) ˚C
Z
S
= 50
Ω
Z
L
= 2 kΩ || 3 pF
min.
—
typ.
44,00
max.
—
Center frequency
(center between 3 dB points)
Insertion attenuation
Reference level for the
44,06 (44,00) MHz
following data
Pass bandwith
α
rel
≤3
dB
α
rel
≤30
dB
Amplitude ripple
Aperture: 250 kHz
41,53 ... 46,59 MHz
Relative attenuation
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
Lower sidelobe
35,06 ... 39,46 (35,00 ... 39,40) MHz
39,46 ... 40,06 (39,40 ... 40,00) MHz
Upper sidelobe
48,06 ... 50,06 (48,00 ... 50,00) MHz
50,06 ... 55,06 (50,00 ... 55,00) MHz
Reflected wave signal suppression
1,3
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 ripple
(p-p)
Aperture 250 kHz
41,53 ... 46,59 MHz
Impedance
at 44,06 MHz
Input:
Z
IN
=
R
IN
||
C
IN
Output:
Z
OUT
=
R
OUT
||
C
OUT
Temperature coefficient of frequency
3
f
C
α
MHz
12,9
14,4
15,9
dB
B
3dB
B
30dB
∆α
α
rel
—
—
—
—
—
1,8
1,5
—
40,0
44,0
38,0
36,0
42,0
42,0
6,0
7,6
0,4
0,4
0,4
3,0
2,7
6,2
52,0
50,0
44,0
43,0
48,0
52,0
—
—
0,8
—
—
4,2
3,9
—
—
—
—
—
—
—
MHz
MHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
50,0
56,0
—
dB
∆τ
—
—
—
20
1,3 ||16,1
1,1 || 5,6
–72
40
—
—
—
ns
kΩ || pF
kΩ || pF
ppm/K
TC
f
—
Mar 31, 2006
EPCOS [ EPCOS ]
