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Max2659 gps/gnss low-noise amplifier, Typical operating characteristics – Rainbow Electronics MAX2659 User Manual

Page 3

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MAX2659

GPS/GNSS Low-Noise Amplifier

_______________________________________________________________________________________

3

SUPPLY CURRENT vs. SUPPLY VOLTAGE

MAX2659 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

3.0 3.2

2.6

2.4

2.2

3.7

3.9

4.1

4.3

4.5

3.5

1.6 1.8 2.0

3.4

2.8

+85°C

+25°C

-40°C

GAIN vs. RF FREQUENCY

MAX2659 toc02

RF FREQUENCY (MHz)

GAIN (dB)

2000 2250

1750

1250 1500

750 1000

-5

0

5

10

15

20

25

-10

500

2500

GAIN vs. SUPPLY VOLTAGE

MAX2659 toc03

SUPPLY VOLTAGE (V)

GAIN (dB)

2.8

3.0

2.6

2.2 2.4

1.8 2.0

20.2

20.4

20.6

20.8

21.0

20.0

1.6

3.4

3.2

NOISE FIGURE vs. TEMPERATURE

MAX2659 toc04

TEMPERATURE (°C)

NOISE FIGURE (dB)

35

60

10

-15

0.2

0.4

0.8

0.6

1.0

1.2

0

-40

85

NOISE FIGURE vs. SUPPLY VOLTAGE

MAX2659 toc05

SUPPLY VOLTAGE (V)

NOISE FIGURE (dB)

2.8

2.4

2.0

0.2

0.4

0.8

0.6

1.0

1.2

0

1.6

3.0 3.2

2.6

2.2

1.8

3.4

INPUT RETURN LOSS

vs. RF FREQUENCY

MAX2659 toc06

RF FREQUENCY (MHz)

INPUT RETURN LOSS |S11| (dB)

1750

1250

1000

-25

-20

-10

-15

-5

0

-30

500

2000 2250

1500

750

2500

OUTPUT RETURN LOSS

vs. RF FREQUENCY

MAX2659 toc07

RF FREQUENCY (MHz)

OUTPUT RETURN LOSS |S22| (dB)

1750

1250

1000

-40

-35

-30

-25

-20

-10

-15

-5

0

-45

500

2000 2250

1500

750

2500

REVERSE ISOLATION

vs. RF FREQUENCY

MAX2659 toc08

RF FREQUENCY (MHz)

REVERSE ISOLATION |S12| (dB)

1750

1250

1000

-70

-60

-50

-30

-40

-20

-80

500

2000 2250

1500

750

2500

IIP3 vs. TEMPERATURE

MAX2659 toc09

TEMPERATURE (°C)

IIP3 (dBm)

35

10

-15

-6.0

-5.5

-5.0

-4.0

-4.5

-3.5

-6.5

-40

60

85

TWO TONES LOCATED AT 5MHz AND
10MHz OFFSET WITH -40dBm/TONE

Typical Operating Characteristics

(MAX2659 EV kit; Typical values are at V

CC

= 2.85V, T

A

= +25°C, and f

RFIN

= 1575.42MHz, unless otherwise noted.)