MAX2643 datasheet(4/16 Pages) MAXIM

Part #	MAX2643

Description	900MHz SiGe, High IP3, Low-Noise Amplifiers

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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900MHz SiGe, High IP3,

Low-Noise Amplifiers

4

_______________________________________________________________________________________

Typical Operating Characteristics

(MAX2642/MAX2643 EV kits, VCC = +3.0V, PRFIN = -30dBm, input and output are terminated to 50

Ω, fRFIN = 900MHz, RBIAS =

510

Ω, high-gain mode (low-gain mode is applicable only to the MAX2642), TA = +25°C, unless otherwise noted.)

-15

-11

-13

-7

-9

-3

-5

-1

3

1

5

0

400 600 800

200

1000 1200 1400 1600 1800

INPUT THIRD-ORDER INTERCEPT

vs. RBIAS (HIGH GAIN)

RBIAS (

Ω)

TA = +85°C

TA = +25°C

TA = -40°C

-15

-1

-3

3

1

7

5

9

11

MAX2642

INPUT THIRD-ORDER INTERCEPT

vs. RBIAS (LOW GAIN)

RBIAS (

Ω)

0

500

1000

1500

2000

-5

-7

-9

-11

-13

TA = +85

°C

TA = +25

°C

TA = -40

°C

0

3

2

1

4

5

6

800

880

860

820 840

900 920 940 960 980 1000

NOISE FIGURE vs. FREQUENCY

FREQUENCY (MHz)

LOW GAIN

HIGH GAIN

MATCHED AT 900MHz

0

1

2

4

3

5

6

-40

-20

0

20

40

60

80

100

NOISE FIGURE vs. TEMPERATURE

TEMPERATURE (°C)

LOW GAIN

HIGH GAIN

-24

-20

-22

-14

-16

-18

-10

-12

-8

0

600 800

200 400

1000 1200 1400 1600 1800

P1dB vs. RBIAS

RBIAS (

Ω)

TA = -40

°C,

HIGH GAIN

TA = +85

°C, HIGH GAIN

TA = -40

°C, LOW GAIN

TA = +85

°C, LOW GAIN

TA = +25

°C, LOW GAIN

TA = +25

°C, HIGH GAIN

-28

-20

-24

-12

-16

-4

-8

0

8

4

12

-30

-22

-18

-26

-14

-10

-6

-2

2

OUTPUT POWER vs. INPUT POWER

PIN (dBm)

510

Ω, HIGH GAIN

1.1k

Ω, LOW GAIN

510

Ω, LOW GAIN

806

Ω, LOW GAIN

806

Ω, HIGH GAIN

1.1k

Ω, HIGH GAIN

0

4

2

8

6

12

10

14

18

16

20

0

400 600 800

200

1000 1200 1400 1600 1800

GAIN vs. RBIAS

RBIAS(

Ω)

-2

-4

TA = +85°C, HIGH GAIN

TA = -40°C, HIGH GAIN

TA = -40°C, LOW GAIN

TA = +85°C, LOW GAIN

TA = +25°C,

HIGH GAIN

TA = +25°C, LOW GAIN

4

10

8

6

12

14

18

16

20

2.4

2.8

3.2

3.6

4.0

4.4

4.8

5.2

5.6

GAIN vs. SUPPLY VOLTAGE

VCC (V)

2

0

-2

-4

TA = +85

°C, HIGH GAIN

TA = -40

°C, HIGH GAIN

TA = -40

°C, LOW GAIN

TA = +85

°C, LOW GAIN

TA = +25

°C, LOW GAIN

TA = +25

°C, HIGH GAIN

0

4

2

8

6

12

10

14

18

16

20

800

840 860 880

820

900 920 940

980

960

1000

GAIN vs. FREQUENCY

FREQUENCY (MHz)

MATCHED AT 900MHz

LOW-GAIN MODE

HIGH-GAIN MODE

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