ATF-35143-BLK datasheet(5/19 Pages) HP

Part #	ATF-35143-BLK

Description	Low Noise Pseudomorphic HEMT in a Surface Mount Plastic Package

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ATF-35143 Typical Performance Curves, continued

Notes:

1. Measurements made on a fixed tuned test fixture that was tuned for noise figure at 2 V 15mA bias. This circuit represents a trade-off

between optimal noise match, maximum gain match and a realizable match based on production test requirements. Circuit losses have

been de-embedded from actual measurements.

2. P1dB measurements are performed with passive biasing. Quiescent drain current, IDSQ, is set with zero RF drive applied. As P1dB is

approached, the drain current may increase or decrease depending on frequency and dc bias point. At lower values of Idsq the device is

running closer to class B as power output approaches P1dB. This results in higher P1dB and higher PAE (power added efficiency) when

compared to a device that is driven by a constant current source as is typically done with active biasing. As an example, at a VDS = 4 V

and IDSQ = 5 mA, Id increases to 30 mA as a P1dB of +15 dBm is approached.

FREQUENCY (GHz)

Figure 12. Fmin vs. Frequency and

Current at 2 V.

010

1.50

1.25

1.00

0.75

0.50

0.25

0

4

28

6

5 mA

15 mA

30 mA

FREQUENCY (GHz)

Figure 13. Associated Gain vs.

Frequency and Current at 2 V.

010

25

20

15

10

5

4

28

6

5 mA

15 mA

30 mA

FREQUENCY (GHz)

Figure 14. Fmin and Ga vs. Frequency

and Temperature, VDS= 2 V, IDS= 15 mA.

08

24

6

25

°C

-40

°C

85

°C

22

20

18

16

14

12

IDS (mA)

Figure 16. OIP3, P1dB, NF and Gain vs.

Bias[1] (Active Bias, 2 V, 3.9 GHz).

080

20

40

60

P1dB

OIP3

Gain

NF

25

20

15

10

5

0

2.5

2

1.5

1

0.5

0

1.0

0.8

0.6

0.4

0.2

0

IDS (mA)

Figure 17. OIP3, P1dB, NF and Gain vs.

Bias[1] (Active Bias, 2 V, 5.8 GHz).

080

20

40

60

P1dB

OIP3

Gain

NF

25

20

15

10

5

0

-5

3

2.5

2

1.5

1

0.5

0

FREQUENCY (GHz)

Figure 15. OIP3 and P1dB vs. Frequency

and Temperature[1,2], VDS= 2 V, IDS= 15 mA.

08

24

6

25

°C

-40

°C

85

°C

25

20

15

10

5

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