B39321-B3576-U310 EPCOS [EPCOS], B39321-B3576-U310 Datasheet - Page 3

• Manufacturer Part Number: B39321-B3576-U310
• Description: SAW Components Low-loss Filter 315,00 MHz
• Manufacturer: EPCOS [EPCOS]

Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
Center frequency
(center frequency between 3 dB points)
Minimum insertion attenuation
Amplitude ripple (p-p)
Relative attenuation (relative to
Impedance for pass band matching
Temperature coefficient of frequency
Frequency inversion point
1)
2)
source- and to load impedance (here 50 Ohm). After the SAW filter is removed and input imped-
ance into the input matching / output matching network is calculated.
The conjugate complex value of these characteristic impedances are the input and output imped-
ances for flat passband. For more details, we refer to EPCOS application note #4.
Temperature dependance of f
SAW Components
Low Loss Filter
Impedance for passband matching bases on an ideal, perfect matching of the SAW filter to
Input:
Output: Z
(including loss in matching coils)
314,90 ... 315,10 MHz
314,92 ... 315,08 MHz
314,90 ... 315,10 MHz
230,00 ... 290,00 MHz
290,00 ... 310,00 MHz
310,00 ... 314,10 MHz
315,90 ... 317,00 MHz
317,00 ... 322,00 MHz
322,00 ...1000,00 MHz
Z
10,00 ... 230,00 MHz
IN
OUT
= R
= R
C
: f
C
min
IN
OUT
( T
2)
)
A
|| C
|| C
) = f
1)
IN
OUT
C
( T
T
Z
Z
0
A
S
L
) (1 + TC
3
= -45 ... 95 ˚C
= 50
= 50
f
TC
T
C
min
rel
0
May 09, 2001
f
f
( T
and matching network
and matching network
A
min.
- T
65
40
50
42
21
38
55
10
—
—
—
—
—
—
—
0
)
2
)
470 || 2,0
470 || 2,0
315,00
-0,03
typ.
3,3
0,7
1,0
70
45
55
47
26
43
60
—
max.
4,8
2,0
3,0
40
—
—
—
—
—
—
—
—
—
—
—
315,00 MHz
B3576
MHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ppm/K
C
|| pF
|| pF
2