HFA3925 데이터 시트보기 (PDF) - Intersil

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HFA3925

2.4GHz - 2.5GHz 250mW Power Amplifier

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HFA3925

Typical Performance Curves (Continued)

Power Amplifier CW Performance at Various Supply Voltages NOTE: All data measured at TA = 25oC and VG1, VG2 and VG3

adjusted for first stage quiescent current of 20mA, second stage current of 53mA and third stage current of 90mA, respectively.

30

2.45GHz, VDD1 = VDD2 = VDD3

25

20

5V

6V

4V

3V

50

2.45GHz, VDD1 = VDD2 = VDD3

40

30

5V

6V

4V

3V

15

20

10

10

5

-19

-14

-9

-4

1

POWER INPUT (dBm)

FIGURE 4. POWER OUTPUT

0

-19

-14

-9

-4

1

INPUT POWER (dBm)

FIGURE 5. POWER ADDED EFFICIENCY

0

6V

-1

5V

-2

4V

-3

3V

-4

-5

-6

-7 2.45GHz, VDD1 = VDD2 = VDD3

-19

-14

-9

-4

1

INPUT POWER (dBm)

FIGURE 6. GAIN COMPRESSION

Power Amplifier Temperature Performance NOTE: All data measured at TA = 25oC and VG1, VG2 and VG3 adjusted for first stage quies-

cent current of 20mA, second stage current of 53mA and third stage current of 90mA, respectively.

35

30

25oC

25

20

-20oC

70oC

15

10 VDD1 = VDD2 = VDD3 = +5V

2.0

2.2

2.4

2.6

2.8

3.0

FREQUENCY (GHz)

30

2.45GHz, VDD1 = VDD2 = VDD3 = +5V

25

-20oC

20

25oC

70oC

15

10

5

0

-19

-14

-9

-4

1

INPUT POWER (dBm)

FIGURE 7. LINEAR GAIN

FIGURE 8. POWER OUTPUT

2-183

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