SAW Components
Bandpass Filter
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
X 6864 D
43,75 MHz
T
A
= 25 (45) ˚C
Z
S
= 50
Ω
Z
L
= 2 kΩ || 3 pF
min.
typ.
(43,75)
max.
—
MHz
Center frequency
(center between 10 dB points)
Insertion attenuation
Reference level for the
43,81 (43,75) MHz
following data
Pass bandwith
α
rel
≤3
dB
α
rel
≤30
dB
Relative attenuation
40,71 (40,65) MHz
46,91 (46,85) MHz
Lower sidelobe
35,06 ... 39,06 (35,00 ... 39,00) MHz
39,06 ... 39,76 (39,00 ... 39,70) MHz
Upper sidelobe
47,86 ... 49,66 (47,80 ... 49,60) MHz
49,66 ... 55,06 (49,60 ... 55,00) MHz
Reflected wave signal suppression
1,3
µs
... 6,0
µs
after main pulse
(test pulse 250 ns,
carrier frequency 43,81 MHz)
Feedthrough signal suppression
1,3
µs
... 1,2
µs
before main pulse
(test pulse 250 ns,
carrier frequency 43,81 MHz)
Group delay ripple
(p-p)
Aperture 50 kHz
40,71 ... 46,91 (40,65 ... 46,85) MHz
Impedance
at 43,81 MHz
Input:
Z
IN
=
R
IN
||
C
IN
Output:
Z
OUT
=
R
OUT
||
C
OUT
Temperature coefficient of frequency
f
C
α
—
13,7
15,2
16,7
dB
B
3dB
B
30dB
α
rel
—
—
—
—
40,0
38,0
38,0
41,0
42,0
6,2
7,6
3,0
2,2
46,0
45,0
44,0
47,0
52,0
—
—
—
—
—
—
—
—
—
MHz
MHz
dB
dB
dB
dB
dB
dB
dB
50,0
56,0
—
dB
∆τ
—
—
—
40
1,3 || 16,1
1,1 || 5,5
–72
—
—
—
—
ns
kΩ || pF
kΩ || pF
ppm/K
TC
f
—
3
Dec 08, 2003
EPCOS [ EPCOS ]
