(MAX2235 Evaluation Kit, GC = unconnected, fRFIN = 836MHz, VCC = VSHDN = +3.6V, TA = +25°C, unless otherwise noted.)

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MAX2235

+3.6V, 1W Autoramping Power

Amplifier for 900MHz Applications

Typical Operating Characteristics

0

200

100

400

300

600

500

700

0

10

15

5

20

25

30

35

SUPPLY CURRENT vs. OUTPUT POWER

OUTPUT POWER (dBm)

TA = -40°C

TA = +25°C

TA = +85°C

0

10

5

20

15

30

25

35

-25

-15 -10

-20

-5

0

5

10

OUTPUT POWER vs. INPUT POWER

AND TEMPERATURE

INPUT POWER (dBm)

TA = -40°C

TA = +25°C

TA = +85°C

0

20

10

40

30

50

60

0

15

20

5

10

25

30

35

EFFICIENCY vs. OUTPUT POWER

OUTPUT POWER (dBm)

VCC = +5.0V

VCC = +3.6V

VCC = +3.0V

VCC = +2.7V

-20

0

-10

20

10

30

40

0

1.0

0.5

1.5

2.0

2.5

OUTPUT POWER

vs. VOLTAGE AT GC PIN

VGC(V)

PRFIN= 0dBm

TA = -40°C

TA = +25°C

TA = +85°C

-60

-40

-50

-20

-30

-10

0

-25

-10

-5

-20 -15

0

5

10

SECOND AND THIRD HARMONICS

vs. INPUT POWER

INPUT POWER (dBm)

2nd

3rd

0

10

5

20

15

30

25

35

0

10

15

5

20

25

30

35

POWER GAIN vs. OUTPUT POWER

OUTPUT POWER (dBm)

VCC = +5.0V

VCC = +3.6V

VCC = +3.0V

40

VCC = +2.7V

0

10

5

20

15

30

25

35

-25

-15 -10

-20

-5

0

5

10

OUTPUT POWER vs. INPUT POWER

INPUT POWER (dBm)

VCC = +5.0V

VCC = +3.6V

VCC = +3.0V

VCC = +2.7V

0

10

5

20

15

30

25

35

820

830 835

825

840 845 850 855

OUTPUT POWER vs. FREQUENCY

INPUT FREQUENCY (MHz)

PRFIN= +3dBm

PRFIN= -5dBm

PRFIN= -13dBm

PRFIN= -21dBm

MATCHED AT

836MHz

0

10

5

20

15

35

30

25

40

0

10

5

15

20

25

30

35

POWER GAIN vs. OUTPUT POWER

AND TEMPERATURE

OUTPUT POWER (dBm)

TA = -40°C

TA = +25°C

TA = +85°C