DATA SHEET • DSG9500-000
For pulsed operation, the total RF plus bias voltage must not
exceed the rated breakdown. Skyworks has made high power
tests at 1 GHz with 1 µs pulses, 0.001 duty, with 200 V diodes.
With 50 mA forward bias, there is no increase in insertion loss
over the 0 dBm level with a peak power input of 50 W. In the
open state, reverse bias voltage is required to keep the diode
from “rectifying,” with resultant decrease in isolation and pos-
sible failure. Figure 7 shows allowed peak power versus reverse
bias at 1 GHz. At this frequency, the required reverse voltage is
almost equal to the peak RF voltage; at high frequency, the bias
can be reduced somewhat. Experimentation is necessary.
Power Handling for DSG9500–000
Beam lead diodes are not suitable for high power operation
because of high internal thermal impedance of about 600 °C/W.
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
100
80
60
40
20
0
0
2
4
6
8
10 12 14 16 18
Frequency (GHz)
Figure 5. Diode Insertion Loss vs. Frequency,
SPST 50 mA Bias00
With maximum CW power dissipation of 250 mW, the
0
10
50
100
DSG9500–000 diodes are normally rated at 2 W CW with linear
derating between 25 °C and 150 °C. Figure 6 presents data on
CW power handling as a function of bias and frequency.
Reverse Bias (V)
Figure 7. Peak Power Handling,
SPST 1 GHz
5000
0.4 V
0.1 V
2000
1000
500
200
100
50
169-001
10% increase
0.004 (0.10 mm)
in small signal
insertion loss
when biased at
50 mA
0.002 (0.05 mm)
Cathode End Has
Blunted Point
0.007
(0.18 mm)
Max.
10% decrease in
small signal insertion
loss when biased at
–1 V/–4 V
0.010
(0.25 mm)
Min.
0.011
(0.28 mm)
Max.
0.035 (0.89 mm)
0.033 (0.84 mm)
0.010
(0.25 mm)
Min.
20
0.1 0.2 0.5 1.0
2.0
5.0
10
20
0.004 (0.10 mm)
0.002 (0.05 mm)
Frequency (GHz)
Figure 6. Typical Series Switch Behavior
at Room Temperature and Biased at
50 mA/1 V/4 V
0.0005
(0.013 mm)
Max.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200137 Rev. A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • February 7, 2005
3
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