ARF521

Dynamic Characteristics

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

C

ISS

Input Capacitance

V

780

900

pF

C

oss

Output Capacitance

V

125

150

C

rss

Reverse Transfer Capacitance

f = 1MHz

7

10

t

d(ON)

Turn-on Delay Time

V

V

I

R

5.1

10

ns

t

r

Rise Time

4.1

8

t

d(off)

Turn-off Delay Time

12

18

t

f

Fall Time

4.0

7

Functional Characteristics

Symbol

Characteristic

Test Conditions

Min

Typ

Max

Unit

G

PS

Common Source Amplifier Power Gain

f = 81MHz

I

V

P

14

15

dB

h

Drain Efficiency

50

55

%

y

Electrical Ruggedness VSWR 5:1

No Degradation in Output Power

1. Pulse Test: Pulse width < 380 μS, Duty Cycle < 2%.

Microsemi reserves the right to change, without notice, the specifications and information contained herein.

FREQUENCY (MHz)

Figure 1, Typical Gain vs. Frequency

25

20

15

10

0

25

50

75

100

125

150

Class AB

V

P

1

5

10

50 100

500

V

Figure 4, Typical Maximum Safe Operating Area

T

T

SINGLE PULSE

40

10

5

1

.5

.1

1ms

10ms

100us

OPERATION HERE

LIMITED BY R

DS

(ON)

DC

100ms

V

Figure 2, Typical Capacitance vs. Drain-to-Source Voltage

3000

1000

500

100

50

10

1

.1

1

10

100 200

C

iss

C

oss

C

rss

30

25

20

15

10

5

0

0

2

4

6

8

10

V

Figure 3, Typical Transfer Characteristics

V

250μSEC. PULSE TEST

@ <0.5 % DUTY CYCLE

T

T

T

T