ATF-521P8-TR1 Datasheet ATF-521P8-TR1, ATF-521P8-BLK, ATF-521P8-TR2 | P4-P6

4

Gamma Load and Source at Optimum OIP3 and P1dB Tuning Conditions

The device’s optimum OIP3 and P1dB measurements were determined using a Maury load pull system at 4.5V, 200

mA quiesent bias:

Optimum OIP3

Freq Gamma Source Gamma Load OIP3 Gain P1dB PAE

(GHz) Mag Ang (deg) Mag Ang (deg) (dBm) (dB) (dBm) (%)

0.9 0.413 10.5 0.314 179.0 42.7 16.0 27.0 54.0

2 0.368 162.0 0.538 ‑176.0 42.5 15.8 27.5 55.3

2.4 0.318 169.0 0.566 ‑169.0 42.0 14.1 27.4 53.5

3.9 0.463 ‑134.0 0.495 ‑159.0 40.3 9.6 27.3 43.9

Optimum P1dB

Freq Gamma Source Gamma Load OIP3 Gain P1dB PAE

(GHz) Mag Ang (deg) Mag Ang (deg) (dBm) (dB) (dBm) (%)

0.9 0.587 12.7 0.613 ‑172.1 39.1 14.5 29.3 49.6

2 0.614 126.1 0.652 ‑172.5 39.5 12.9 29.3 49.5

2.4 0.649 145.0 0.682 ‑171.5 40.0 12.0 29.4 46.8

3.9 0.552 ‑162.8 0.670 ‑151.2 38.1 9.6 27.9 39.1

Figure 7. Simplied schematic of production test board. Primary purpose is to show 15 Ohm series resistor placement in gate supply. Transmission line

tapers, tee intersections, bias lines and parasitic values are not shown.

RF Input

1.5 pF

3.9 nH

1.5 pF

RF Output

50 Ohm

.02 λ

110 Ohm

.03 λ

110 Ohm

.03 λ

50 Ohm

.02 λ

DUT

1 pF

12 nH

15 Ohm

2.2 µF

Gate

Supply

47 nH

2.2 µF

Drain

Supply

5

ATF-521P8 Typical Performance Curves (at 25°C unless specied otherwise)

Tuned for Optimal OIP3

Note:

Bias current for the above charts are quiescent conditions. Actual level may increase depending on amount of RF drive.

Figure 8. OIP3 vs. I

ds

and V

ds

at 2 GHz.

4.5V

4V

3V

I

d

(mA)

OIP3 (dBm)

50

45

40

35

30

25

20

15

10

100 400200150 300 350250

Figure 9. OIP3 vs. I

ds

and V

ds

at 900 MHz.

I

d

(mA)

OIP3 (dBm)

45

40

35

30

25

20

15

10

100 400200150 300 350250

4.5V

4V

3V

Figure 10. OIP3 vs. I

ds

and V

ds

at 3.9 GHz.

I

d

(mA)

OIP3 (dBm)

50

45

40

35

30

25

20

15

10

100 400200150 300 350250

4.5V

4V

3V

Figure 11. P1dB vs. I

dq

and V

ds

at 2 GHz.

I

dq

(mA)

P1dB (dBm)

35

30

25

20

15

10

100 400200150 300 350250

4.5V

4V

3V

Figure 12. P1dB vs. I

dq

and V

ds

at 900 MHz.

4.5V

4V

3V

I

dq

(mA)

P1dB (dBm)

35

30

25

20

15

10

100 400200150 300 350250

Figure 13. P1dB vs. I

dq

and V

ds

at 3.9 GHz.

4.5V

4V

3V

I

dq

(mA)

P1dB (dBm)

35

30

25

20

15

10

100 400200150 300 350250

Figure 14. Small Signal Gain vs I

ds

and V

ds

at 2 GHz.

I

d

(mA)

GAIN (dBm)

17

16

15

14

13

12

11

10

100 400200150 300 350250

4.5V

4V

3V

Figure 15. Small Signal Gain vs I

ds

and V

ds

at 900 MHz.

I

d

(mA)

GAIN (dBm)

17

16

15

14

13

12

11

10

100 400200150 300 350250

4.5V

4V

3V

Figure 16. Small Signal Gain vs I

ds

and V

ds

at 3.9 GHz.

I

d

(mA)

GAIN (dBm)

12

11

10

9

8

7

6

5

100 400200150 300 350250

4.5V

4V

3V

6

ATF-521P8 Typical Performance Curves, continued (at 25°C unless specied otherwise)

Tuned for Optimal OIP3

Note:

Bias current for the above charts are quiescent conditions. Actual level may increase depending on amount of RF drive.

Figure 17. PAE @ P1dB vs. I

dq

and V

ds

at 2 GHz.

I

dq

(mA)

PAE (%)

70

60

50

40

30

20

10

100 400200150 300 350250

4.5V

4V

3V

Figure 18. PAE @ P1dB vs. I

dq

and V

ds

at 900 MHz.

I

dq

(mA)

PAE (%)

70

60

50

40

30

20

10

100 400200150 300 350250

4.5V

4V

3V

Figure 19. PAE @ P1dB vs. I

dq

and V

ds

at 3.9 GHz.

I

dq

(mA)

PAE (%)

50

45

40

35

30

25

20

15

10

100 400200150 300 350250

4.5V

4V

3V

Figure 20. OIP3 vs. Temp and Freq

tuned for optimal OIP3 at 4.5V, 200 mA.

FREQUENCY (GHz)

OIP3 (dBm)

50

45

40

35

30

25

20

15

0.5 43.51.51 2.5 32

85°C

25°C

-40°C

Figure 21. P1dB vs. Temp and Freq

tuned for optimal OIP3 at 4.5V, 200 mA.

FREQUENCY (GHz)

P1dB (dBm)

29

27

25

23

21

19

17

15

0.5 43.51.51 2.5 32

85°C

25°C

-40°C

Figure 22. Gain vs. Temp and Freq

tuned for optimal OIP3 at 4.5V, 200 mA.

FREQUENCY (GHz)

GAIN (dB)

20

15

10

5

0

0.5 43.51.51 2.5 32

85°C

25°C

-40°C

Figure 23. PAE vs Temp and Freq

tuned for optimal OIP3 at 4.5V, 200 mA.

FREQUENCY (GHz)

PAE (%)

70

60

50

40

30

20

10

0

0.5 43.51.51 2.5 32

85°C

25°C

-40°C

ATF-521P8-TR1

ATF-521P8-TR1

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