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

ARF463A/B

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 5.0

7.8 - j 11

2.1 - j 6.4

.74 - j 3.3

.30 + j .42

.46 + j 2.0

.87 + j 3.7

55 - j 4.8

41 - j 24

23 - j 26.2

13.6 - j 22

6.1 - j 14.2

4.2 - j 10.7

2.7 - j 7.1

Zin - Gate shunted with 25Ω!!

Z

Conjugate of optimum load for 100 Watts output at Vdd = 125V

Figure 9b, TRANSIENT THERMAL IMPEDANCE MODEL

Note:

Duty Factor D =

t1/t

2

Peak TJ = PDM x ZθJC + TC

t1

t2

SINGLE PULSE

0.5

0.1

0.3

0.7

0.9

0.05

0.80

0.70

0.60

0.50

0.40

0.30

0.20

0.10

0

1.0

RECTANGULARPULSEDURATION(SECONDS)

Figure 9a, Typical Maximum Effective Transient Thermal Impedance, Junction-To-Case vs Pulse Duration

0.147

0.231

0.321

0.00259F

0.00818F

0.127F

Power

(watts)

Junction

temp. ( ”C)

RC MODEL

Case temperature