2.5GHz, 22dBm/20dBm Power Amplifiers with

Analog Closed-Loop Power Control

10

______________________________________________________________________________________

-20

-15

-10

-5

0

5

10

15

20

25

0

0.50

1.00

1.50

2.00

2.50

MAX2244 TYPICAL OUTPUT POWER

VPC (V)

(dBm)

(dBm)

(dBm)

(dBm)

(dBm)

0

-9.45

0.42

-3.24

0.54

5.59

0.90

13.76

1.70

20.79

0.30

-9.45

0.43

-1.85

0.56

6.35

0.95

14.45

1.80

21.24

0.32

-9.45

0.44

-0.64

0.58

7.04

1.00

15.10

1.90

21.63

0.36

-9.50

0.45

0.43

0.60

7.67

1.10

16.25

2.00

21.91

0.37

-9.55

0.46

1.24

0.65

9.05

1.20

17.26

2.10

22.07

0.38

-10.79

0.47

1.97

0.70

10.22

1.30

18.16

2.20

22.08

0.39

-15.60

0.48

2.62

0.75

11.26

1.40

18.95

2.30

22.09

0.40

-8.65

0.50

3.79

0.80

12.19

1.50

19.65

2.40

22.10

0.41

-5.41

0.52

4.75

0.85

13.01

1.60

20.26

2.50

22.11

Figure 3a. MAX2244 Typical Output Power vs. Power-Control Voltage