MAX2645 datasheet(7/12 Pages) MAXIM

Part #	MAX2645

Description	3.4GHz to 3.8GHz SiGe Low-Noise Amplifier/PA Predriver

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Manufacturer	MAXIM [Maxim Integrated Products]

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

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3.4GHz to 3.8GHz SiGe

Low-Noise Amplifier/PA Predriver

_______________________________________________________________________________________

7

1.0

2.5

2.0

1.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

3.4

3.5

3.6

3.7

3.8

OUTPUT VSWR vs. FREQUENCY

FREQUENCY (GHz)

LOW GAIN

HIGH GAIN

LOW-NOISE FIGURE CIRCUIT

-35

-25

-30

-15

-20

-5

-10

0

REVERSE ISOLATION vs. FREQUENCY

FREQUENCY (GHz)

3.4

3.5

3.6

3.7

3.8

LOW GAIN

HIGH GAIN

LOW-NOISE FIGURE CIRCUIT

12.0

13.5

13.0

12.5

14.0

14.5

15.0

15.5

16.0

16.5

17.0

3.4

3.5

3.6

3.7

3.8

GAIN vs. FREQUENCY

(HIGH-GAIN MODE)

FREQUENCY (GHz)

HIGH-INPUT IP3 CIRCUIT

TA = +25°C

TA = +85°C

TA = -40°C

-15.0

-13.5

-14.0

-14.5

-13.0

-12.5

-12.0

-11.5

-11.0

-10.5

-10.0

3.4

3.5

3.6

3.7

3.8

GAIN vs. FREQUENCY

(LOW-GAIN MODE)

FREQUENCY (GHz)

TA = +25

°C

TA = +85

°C

TA = -40

°C

HIGH-INPUT IP3 CIRCUIT

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

3.4

3.5

3.6

3.7

3.8

INPUT VSWR

vs. FREQUENCY

FREQUENCY (GHz)

LOW GAIN

HIGH GAIN

HIGH-INPUT IP3 CIRCUIT

10

13

12

11

14

15

16

17

18

19

20

3.4

3.5

3.6

3.7

3.8

GAIN vs. FREQUENCY

(HIGH-GAIN MODE)

FREQUENCY (GHz)

PA PREDRIVER CIRCUIT

TA = +25

°C

TA = +85

°C

TA = -40

°C

VCC = 5V

-15

-12

-13

-14

-11

-10

-9

-8

-7

-6

-5

3.4

3.5

3.6

3.7

3.8

GAIN vs. FREQUENCY

(LOW-GAIN MODE)

FREQUENCY (GHz)

TA = +25

°C

TA = +85

°C

TA = -40

°C

PA PREDRIVER CIRCUIT

VCC = 5V

12.5

13.0

13.5

14.0

14.5

15.0

15.5

16.0

16.5

3.0

3.5

4.0

4.5

5.0

5.5

GAIN vs. SUPPLY VOLTAGE

(HIGH-GAIN MODE)

SUPPLY VOLTAGE (V)

TA = +85

°C

TA = -40

°C

TA = +25

°C

PA PREDRIVER CIRCUIT

VCC = 5V

-12.5

-12.0

-11.5

-11.0

-10.5

-10.0

-9.5

-9.0

-8.5

3.0

3.5

4.0

4.5

5.0

5.5

GAIN vs. SUPPLY VOLTAGE

(LOW-GAIN MODE)

SUPPLY VOLTAGE (V)

TA = +25

°C

TA = +85

°C

TA = -40

°C

PA PREDRIVER CIRCUIT

VCC = 5V

Typical Operating Characteristics (continued)

(MAX2645 EV kit, VCC = +3.3V, RBIAS = 20k

Ω, fRFIN = 3550MHz, TA = +25°C, unless otherwise noted.)

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