SAW Device
SAW Filter for Radio Communication
n
Features
l
A low-loss filter.
l
Compact.
l
Excellent guaranteed attenuation.
For Industrial Use
Pb
Free
n
Specifications
Model
Item
Nominal frequency : f
0
(MHz)
Insertion loss at Fc
1-dB passband width (MHz)
3-dB passband width (MHz)
Passband width
(rel to Fc)
35-dB passband width (In Band)(MHz)
Ripple (@ Fc 卤10MHz)(dB)
Phase linearity (@ Fc 卤10MHz)(deg)
Group delay time ripple (@ Fc 卤10MHz)(ns)
Absolute delay time @ Fc (is)
Out Band
(rel to Fc)
Operating temperature range (掳C)
Terminating impedance (惟)
Guaranteed attenuation (dB) @ Fc鈥?0MHz
@ Fc+20MHz
min.
鈥?/div>
鈥?/div>
21
23.9
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
40
33
23
WF748D0140CD
typ.
140
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
0.76
鈥?/div>
鈥?/div>
鈥?/div>
50 (with matching)
max.
鈥?/div>
11
鈥?/div>
鈥?/div>
34
1.0
14
100
鈥?/div>
鈥?/div>
鈥?/div>
27
n
Dimensions
mm
PAD NO.
5.0
Others
10
5
7.0
Reference land pattern
1.6
2.5
2脳1.27
1.27 1.27
1
1.5
10
2
3
4
2.54
1.9
1.5
9鈥?.0
2.54
5.0
0.8
CONNECTION
GND
INPUT
OUTPUT
n
Characteristics
[In-band characteristics]
CH1 A/R LOG MAG
REF 鈥?.290 dB
1.000 dB/
CH1
CENTER(MHz) 140.0000
SPAN(MHz) 50.000
10鈥?.6
1.4
9
8
7
6
5
1.27
7.0
[Out-of-band characteristics]
CH1 A/R LOG MAG
REF 鈥?.290 dB
10.000 dB/
n
Matching Circuit
IN
C
1
10
5
C
2
OUT
SAW
50惟
L
1
L
2
50惟
CH1
CENTER(MHz) 140.0000
SPAN(MHz) 100.000
sa16_071102_WF748D0140CD_e1
1
