For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343

Fax: 978-250-3373

Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

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7 - 2

LNA - Broadband Gain & Return Loss

HMC668LP3 / 668LP3E

v03.0610

GaAs PHEMT MMIC LNA w/

FAILSAFE BYPASS MODE, 700 - 1200 MHz

[1] Vdd = 5V

[2] Vdd = 3V

[3] measurement reference plane shown on evaluation pCB drawing.

10

12

14

16

18

20

22

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

+25C

+85C

-40C

FREQUENCY (GHz)

-25

-20

-15

-10

-5

0

5

10

15

20

25

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

Vdd=5V

Vdd=3V

FREQUENCY (GHz)

S11

S21

S22

0.2

0.5

0.8

1.1

1.4

1.7

2

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

Vdd=5V

Vdd=3V

FREQUENCY (GHz)

+85C

+25C

-40C

10

12

14

16

18

20

22

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

+25C

+85C

-40C

FREQUENCY (GHz)

LNA - Output IP3 vs.

Temperature, Output Power @ 0 dBm

18

23

28

33

38

43

48

12

17

22

27

32

37

42

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

+25C

+85C

-40C

Frequency (GHz)

Vdd=5V

Vdd=3V

-25

-20

-15

-10

-5

0

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

+25C

+85C

-40C

FREQUENCY (GHz)

Input Return Loss

Output Return Loss