B3688 EPCOS AG, B3688 Datasheet - Page 3

• Manufacturer Part Number: B3688
• Description: Saw Components Low-loss Filter
• Manufacturer: EPCOS AG

Data Sheet
Characteristics
Operating temperature:
Terminating source impedance:
Terminating load impedance:
Nominal frequency
Insertion attenuation at f
Variation of insertion att. (rel. to
Frequency response
Amplitude ripple (peak to adjacent valley)
Relative attenuation
Temperature coefficient of frequency
Turnover temperature
Matching circuit:
1)
2)
SAW Components
Low-Loss Filter
Temperature dependance of f
Element values depend on PCB layout
3 dB Lower frequency
3 dB Upper frequency
35 dB Lower frequency
35 dB Upper frequency
f
f
f
f
f
N
N
N
N
N
- 200,0 MHz ... f
-
+
+ 10,0 MHz ... f
100 kHz
10,0 MHz ... f
3,0 MHz ... f
N
N
N
N
(T=25 ˚C)
N
-
+ 10,0 MHz
+ 200,0 MHz
-
c
:
10,0 MHz
3,0 MHz
N
f
c
)
( T
A
) = f
1)
c
T = -25 ... +75 ˚C
Z
Z
( T
S
L
0
= 50
= 50
3
)(1 + TC
f
f
f
f
f
TC
T
N
L 3dB
U 3dB
L35dB
U35dB
N
rel
rel
0
Jan 29, 2003
f
f
and matching network
and matching network
( T
499,75
496,25
A
min.
40
35
35
40
—
—
—
—
—
—
—
– T
6,0
0
)
2
)
499,25
498,27
500,23
496,75
501,85
– 0,036
typ.
55
48
43
51
25
—
—
8,0
C
L
L
C
s2
s3
p1
p4
= 21nH
= 22nH
= 13pF
= 14pF
498,75 MHz
502,25 MHz
max.
—
—
—
—
—
—
—
—
—
499,25 MHz
9,0
0,9
0,5
2)
2)
2)
2)
B3688
MHz
dB
dB
MHz
MHz
dB
dB
dB
dB
dB
ppm/K
˚C
2