ATF-531P8 Typical Performance Curves,
continued (at 25°C unless specified otherwise)
Tuned for Optimal OIP3
60
50
40
PAE (%)
PAE (%)
60
50
40
30
20
3V
4V
5V
60
50
40
PAE (%)
3V
4V
5V
30
20
10
0
30
20
10
0
3V
4V
5V
10
0
75
90
105
120
135
150
165
180
75
90
105
120
135
150
165
180
75
90
105
120
135
150
165
180
I
dq
(mA)
I
dq
(mA)
I
dq
(mA)
Figure 17. PAE vs. I
dq
and V
ds
at 900 MHz.
Figure 18. PAE vs. I
dq
and V
ds
at 2 GHz.
Figure 19. PAE vs. I
dq
and V
ds
at 3.9 GHz.
45
12
10
30
SMALL SIGNAL GAIN (dB)
40
OIP3 (dBm)
25
P1dB (dBm)
8
6
4
2
0
3V
4V
5V
35
20
30
3V
4V
5V
25
15
3V
4V
5V
20
75
90
105
120
135
150
165
180
I
ds
(mA)
75
90
105
120
135
150
165
180
10
75
90
105
120
135
150
165
180
I
ds
(mA)
I
dq
(mA)
Figure 20. OIP3 vs. I
ds
and V
ds
at 5.8 GHz.
Figure 21. Small Signal Gain vs. I
ds
and V
ds
at 5.8 GHz.
Figure 22. P1dB vs. I
dq
and V
ds
at 5.8 GHz.
60
50
40
PAE (%)
30
20
10
0
3V
4V
5V
75
90
105
120
135
150
165
180
I
dq
(mA)
Figure 23. PAE vs. I
dq
and V
ds
at 5.8 GHz.
Note:
Bias current for the above charts are quiescent
conditions. Actual level may increase or
decrease depending on amount of RF drive. The
objective of load pull is to optimize OIP3 and
therefore may trade-off Small Signal Gain, P1dB
and VSWR.
6
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