NDK WF328A

SAW Device
622.08-MHz Timing Filter for Optical Communication
For Industrial Use
n Features
A timing filter for optical communication is used for clock extraction in optical fiber
communication.
l High stability.
l Compact (5.2 x 4.8 x 1.45 mm).
Pb
Free
n Specifications
Model
WF328A
Item
Nominal frequency3dB (MHz)
Q value 3dB
Minimal loss (dB)
Guaranteed attenuation (dB)
min.
typ.
max.
622.00
622.08
622.16
600
850
1200
–
9.0
12.0
10 to 612.08MHz
25
40
–
632.08 to 722.08MHz
25
40
–
Operating temperature range (°C)
0 to +65
Terminating impedance (Ω)
50
n Dimensions
n Characteristics
[In-band characteristics]
mm
CONNECTION
Others
GND
INPUT
3
OUTPUT
[1dB/div]
1.45±0.3
6
0
[10deg/div]
PAD NO.
Reference land pattern
4.8±0.3
2.54
5.4
0.8
2.54
622.08MHz
2MHz span
[Out-of-band characteristics]
4
2
2.8
5.8
0
3
[10dB/div]
1
1.0
G
1.4
3.2
5
5.2±0.3
6
622.08MHz
50MHz span
sa27_071102_WF328A_e1