MAX2440 Ver la hoja de datos (PDF) - Maxim Integrated

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MAX2440

900MHz Image-Reject Receivers

Maxim Integrated 

900MHz Image-Reject Receivers

Typical Operating Characteristics

(MAX242X/MAX246X EV kit, VCC = +3.3V; fLO = 925.7MHz (MAX2440), fLO = 961MHz (MAX2441), fLO = 985MHz (MAX2442),

fRXIN = 915MHz; PRXIN = -35dBm; VLNAGAIN = 2V; VVCOON = 2.4V; RXON = VCC; MOD = DIV1 = PREGND = GND; TA = +25°C,

unless otherwise noted.)

RECEIVER SUPPLY CURRENT

vs. TEMPERATURE

42

40

38

VCC = 4.8V

36

34

VCC = 3.3V

32

30

VCC = 2.7V

28

26

24

-40 -20

PREGND = UNCONNECTED

INCLUDES OSCILLATOR

CURRENT

0 20 40 60 80 100

TEMPERATURE (°C)

RECEIVER INPUT IP3 vs. VLNAGAIN

5

LNA

LNA ADJUSTABLE MAX

OFF PARTIALLY GAIN GAIN

0

BIASED

AVOID

-5

THIS

REGION

-10

-15

-20

0

0.5

1.0

1.5

2.0

LNAGAIN VOLTAGE (V)

RECEIVER NOISE FIGURE vs.

TEMPERATURE AND SUPPLY VOLTAGE

5.5

LNAGAIN = VCC

DIV1 = VCC

5.0

VCC = 4.8V

4.5

VCC = 3.3V

4.0

VCC = 2.7V

3.5

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

4.5

VCOON = GND

4.0 RXON = GND

3.5

3.0

2.5

2.0

VCC = 4.8V

1.5

VCC = 3.3V

1.0

0.5

0

-40 -20

VCC = 2.7V

0 20 40 60 80 100

TEMPERATURE (°C)

RECEIVER NOISE FIGURE

vs. LNAGAIN

40

35

LNA ADJUSTABLE MAX

LNA PARTIALLY GAIN

GAIN

30

OFF

BIASED

25

20

15

10

5

0

0

AVOID

THIS

REGION

DIV1 = VCC

0.5

1.0

1.5

2.0

LNAGAIN VOLTAGE (V)

RECEIVER INPUT IP3

vs. TEMPERATURE

-6

-8

VLNAGAIN = 1V

-10

-12

-14

-16

VLNAGAIN = 2V

-18

RECEIVER GAIN vs. LNAGAIN

25

LNA

20

LNA PARTIALLY

OFF

BIASED

15

10

5

ADJUSTABLE MAX

0

GAIN

GAIN

-5

-10

AVOID

THIS

-15

REGION

-20

0

0.5

1.0

1.5

2.0

LNAGAIN VOLTAGE (V)

MAX2440

RECEIVER GAIN vs. TEMPERATURE

LNAGAIN = VCC

26

24

VCC = 4.8V

VCC = 2.7V

22

VCC = 3.3V

20

18

-40 -20 0 20 40 60 80 100

TEMPERATURE (°C)

MAX2440

RXOUT 1dB COMPRESSION POINT

vs. TEMPERATURE

-3

-4

VCC = 4.8V

-5

-6

VCC = 2.7V

VCC = 3.3V

-7

-8

3.0

-40 -20

0 20 40 60

TEMPERATURE (°C)

80 100

-20

-40 -20

0 20 40 60

TEMPERATURE (°C)

80 100

-9

-40 -20 0 20 40 60 80

TEMPERATURE (°C)

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