ARF520

Note:

Duty Factor D =

t1/t

2

Peak TJ = PDM x ZθJC + TC

t1

t2

1.0

10

RECTANGULAR PULSE DURATION (SECONDS)

Figure 7, Maximum Effective Transient Thermal Impedance, Junction-to-Case vs. Pulse Duration

0.70

0.10

0.05

0.01

0.005

0.001

0.1

0.02

0.05

0.2

D=0.5

0.01

SINGLE PULSE

Figure 5, Typical Threshold Voltage vs Temperature

Figure 6, Typical Output Characteristics

1.2

1.0

0.8

0.6

0.4

0.2

0.0

-50

-25

0

25

50

75

100

125

150

0

5

10

15

20

25

30

5.5V

4.5V

4V

5V

VGS=15 & 10V

6V

8V

25

20

15

10

5

0

Table 1 - Typical Class AB Large Signal Input - Output Impedance

Freq. (MHz)

Zin (Ω)

Z

2.0

13.5

27

40

65

80

100

24 - j 4.5

8.3 - j 11.6

2.5 - j 7.1

1.0 - j 4.2

.30 - j 1.1

.25 + j 0.3

.35 + j 1.6

55 - j 4

45 - j 22

28.7 - j 28

17.9 - j 26

9.0 - j 20.6

5.8 - j 17

4 - j 14.2

Zin - Gate shunted with 25Ω

Z

Conjugate of optimum load for 150 Watts output at Vdd = 125V