SAW FILTER
HDQSF45A7Dc SIP5Dc
Reflected wave signal suppression
1.3 us … 6.0 us after main pulse
(test pulse 250 ns ,
carrier frequency 44.06 MHz)
Feedthrough signal suppression
1.3 us … 1.2 us before main pulse
(test pulse 250 ns ,
42.0
52.0
dB
dB
56.0
carrier frequency 44.06 MHz)
Group delay predistortion
(reference frequency 45.81 MHz)
ns
ns
-40
0
43.26MHz
42.23MHz
Temperature coefficient
-72
ppm/k
Characteristics of sound channel
Source impedance
Zs=50Ω
ZL=2kΩ//3pF
Freq
Load impedance
TA=25℃
min
9.9
typ
max
dB
Insertion attenuation
41.31MHz
11.4
12.9
Reference level
42.23MHz
45.81MHz
39.81MHz
47.31MHz
23.0
32.0
45.0
41.0
43.0
40.0
39.0
-72
-
-
-
-
dB
dB
dB
dB
dB
38.0
35.0
40.0
35.0
34.0
Relative attenuation
35.06~39.81MHz
47.31~55.06MHz
Temperature coefficient
Sidelobe
dB
ppm/K
3.3 Environmental Performance Characteristics
Item Condition
High
Specifications
The specimen shall be store at a temperature of
80±2℃ for 96±4h. Then it shall be subjected to
standard atmospheric conditions for 1h, after
which measurement shall be made within 1h.
The specimen shall be store at a temperature of
-20±3℃ for 96±4h. Then it shall be subjected to
standard atmospheric conditions for 1h, after
which measurement shall be made within 1h.
The specimen shall be store at a temperature of
40±2℃ with relative humidity of 90% to 96%
for 96±4h. Then it shall be subjected to standard
atmospheric conditions for 1h, after which
temperature
Mechanical
characteristics and
specifications
electrical
characteristics shall
be satisfied. There
Low
temperature
in
Humidity
shall
be
no
excessive change in
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