Page 1
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 1
Specifications subject to change without notice. 6/99A
General Purpose PHEMT Chip
Features
■ Low Noise Figure, 1.25 dB @ 4 GHz
■ High Associated Gain, 15.0 dB @ 4 GHz
■ High MAG, > 18 dB @ 4 GHz
■ 0.7 µm Ti/Pd/Au Gates
■ Passivated Surface
Description
The AFP02N8-000 general purpose PHEMT chip has
excellent gain and noise performance through X band,
making it suitable for a wide range of commercial and military
applications.The device employs 0.7 µm Ti/Pd/Au gates and
surface passivation to ensure a rugged, reliable part.
AFP02N8-000
Parameter Test Conditions Min. Typ. Max. Unit
Saturated Drain Current (I
DSS
)V
DS
= 2 V, VGS= 0 V 25.0 45.0 90.0 mA
Transconductance (gm) VDS= 2 V, IDS= 15 mA 40.0 55.0 mS
Pinch-off Voltage (VP) VDS= 2 V, IDS= 0.3 mA -0.2 -0.6 -2.0 V
Gate to Source IGS= -200 µA -4.0 -6.0 V
Breakdown V oltage (V
bgs
)
Noise Figure (NF)
VDS= 2 V, IDS= 15 mA, F = 4 GHz
1.25 1.75 dB
Associated Gain (GA) 14.0 15.0 dB
Noise Figure (NF)
VDS= 2 V, IDS= 15 mA, F = 12 GHz
2.6 3.0 dB
Associated Gain (GA) 8.5 9.4 dB
Electrical Specifications at 25°C
78
50
50
50
400
50
20
125
350
D
SS
GG
D
Characteristic Value
Drain to Source Voltage (VDS) 6 V
Gate to Source Voltage (VGS) -3 V
Drain Current (IDS) I
DSS
Gate Current (IGS) 10 µA
Total Power Dissipation (PT) 300 mW
Storage Temperature (TST) -65 to +150°C
Channel Temperature (TCH) 175°C
Absolute Maximum Ratings
Page 2
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 6/99A
General Purpose PHEMT Chip AFP02N8-000
0
4
8
12
16
20
24
0
0 2 4 6 8 10 12 14 16 18 20
1
2
3
4
6
5
NF
MIN
(dB)
G
A
(dB)
Frequency (GHz)
RF Minimum Noise Figure (NF
MIN
) and
Associated Gain (G
A
) vs. Frequency (GHz)
VDS = 2 V, IDS = 15 mA
GA (dB)
NF
MIN
(dB)
100
0 1.0 1.5 2.50.5 2.0 3.0
50
0
VDS (V)
l
DS
(mA)
DC Drain Current (IDS) vs. Drain Voltage (VDS)
as a Function of Gate to Source Voltage (V
GS
)
0 5 10 15 20 25 30 4035
IDS (mA)
NF
MIN
(dB)
G
A
(dB)
RF Minimum Noise Figure (NF
MIN
) and
Associated Gain (G
A
) vs. Drain Current (IDS)
F = 12 GHz, VDS = 2 V
0
2
4
6
8
12
0
1
2
3
4
6
105
NF
MIN
(dB)
GA (dB)
100
0
-2.0 -1.0 0
100
0
50
50
1.0
gm (mS)
VGS (V)
l
DS
(mA)
VDS = 2 V
DC Drain Current (IDS) and
Transconductance (gm) vs.
Gate to Source Voltage (V
GS
)
Typical Performance Data
Page 3
General Purpose PHEMT Chip AFP02N8-000
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 3
Specifications subject to change without notice. 6/99A
Typical S-Parameters (VDS= 2 V, IDS= 10 mA)
Freq. NF
MIN
ΓΓ
opt
(GHz) (dB) Mag. Ang. RN/50 GA(dB)
1 0.70 0.88 13.30 0.01 23.00
2 0.88 0.78 27.30 0.13 18.30
4 1.22 0.62 53.60 0.27 15.35
6 1.59 0.52 77.60 0.31 13.22
8 1.95 0.46 99.40 0.31 11.67
10 2.30 0.44 119.20 0.29 10.30
12 2.63 0.44 136.90 0.25 9.24
14 3.00 0.46 152.80 0.21 8.25
16 3.35 0.50 166.90 0.17 7.49
18 3.70 0.54 179.30 0.15 6.59
20 4.00 0.57 -169.90 0.16 5.46
22 4.37 0.59 -160.60 0.20 5.05
24 4.73 0.60 -152.70 0.28 4.85
26 5.10 0.57 -146.20 0.39 4.86
Typical Noise Parameters
(V
DS
= 2 V, IDS= 15 mA)
Both noise and S-parameters include bond wires.Two gate
bond wires and two drain wires are each approximately
325 µm (13 mil) long.Four source bond wires (2 each side)
are each approximately 200 µm (8 mil) long. All wire is
17 µm (0.7 mil) diameter gold.
Freq.
S
11
S
21
S
12
S
22
S
21
MAG/
(GHz) Mag. Ang. Mag. Ang. Mag. Ang. Mag. Ang. k (dB) MSG (dB)
2 0.946 -37.71 3.892 150.07 0.041 67.60 0.739 -15.73 0.216 11.803 19.774
3 0.909 -54.69 3.615 138.06 0.057 58.11 0.714 -22.39 0.273 11.162 18.022
4 0.866 -70.13 3.322 126.96 0.068 50.39 0.688 -27.24 0.350 10.428 16.889
5 0.830 -84.40 3.016 116.85 0.078 42.85 0.658 -32.95 0.426 9.589 15.873
6 0.801 -96.78 2.747 108.11 0.084 36.92 0.640 -37.16 0.494 8.777 15.146
7 0.776 -107.46 2.504 100.24 0.088 32.24 0.621 -40.57 0.577 7.973 14.542
8 0.760 -117.10 2.285 93.26 0.091 28.30 0.607 -44.11 0.643 7.178 13.998
9 0.746 -125.45 2.098 86.79 0.093 25.09 0.599 -47.10 0.715 6.436 13.533
10 0.733 -131.77 1.937 81.28 0.095 22.67 0.589 -50.14 0.795 5.743 13.094
11 0.723 -138.16 1.805 75.95 0.096 20.83 0.589 -52.95 0.855 5.130 12.742
12 0.714 -143.64 1.687 70.89 0.097 19.25 0.585 -55.52 0.929 4.542 12.403
13 0.702 -148.82 1.586 66.16 0.097 17.91 0.583 -58.82 1.014 4.006 11.418
14 0.696 -153.98 1.502 61.42 0.098 16.87 0.581 -61.53 1.071 3.533 10.232
15 0.689 -158.65 1.424 56.91 0.098 16.14 0.577 -64.16 1.152 3.070 9.259
16 0.681 -163.77 1.359 52.41 0.098 15.37 0.579 -67.35 1.214 2.664 8.625
17 0.671 -168.77 1.300 47.92 0.099 15.16 0.574 -70.36 1.291 2.279 7.944
18 0.666 -173.79 1.243 43.61 0.099 14.58 0.570 -73.60 1.367 1.889 7.373
Page 4
4 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 6/99A
General Purpose PHEMT Chip AFP02N8-000
Typical S-Parameters (VDS= 2 V, IDS= 30 mA)
Freq.
S
11
S
21
S
12
S
22
S
21
MAG/
(GHz) Mag. Ang. Mag. Ang. Mag. Ang. Mag. Ang. k (dB) MSG (dB)
2 0.942 -41.56 4.452 148.27 0.034 67.38 0.630 -16.20 0.27 12.97 21.17
3 0.904 -59.91 4.086 135.96 0.047 58.52 0.606 -22.82 0.33 12.23 19.39
4 0.863 -76.17 3.703 124.86 0.056 51.14 0.585 -27.90 0.42 11.37 18.20
5 0.829 -90.97 3.328 114.87 0.064 44.47 0.559 -33.10 0.50 10.44 17.16
6 0.804 -103.55 3.007 106.34 0.069 39.39 0.545 -37.24 0.58 9.56 16.39
7 0.783 -114.26 2.717 98.74 0.072 35.51 0.530 -40.37 0.68 8.68 15.77
8 0.770 -123.73 2.467 92.01 0.075 32.58 0.522 -43.96 0.74 7.84 15.17
9 0.759 -131.90 2.253 85.83 0.076 30.08 0.517 -47.08 0.83 7.06 14.72
10 0.747 -138.10 2.075 80.51 0.078 28.62 0.509 -50.12 0.92 6.34 14.25
11 0.741 -144.38 1.928 75.43 0.079 27.69 0.512 -52.73 0.98 5.70 13.88
12 0.731 -149.68 1.797 70.53 0.080 27.07 0.512 -55.37 1.07 5.09 11.96
13 0.721 -154.66 1.684 65.99 0.082 26.39 0.510 -58.89 1.14 4.53 10.86
14 0.716 -159.81 1.594 61.39 0.084 26.21 0.509 -61.45 1.19 4.05 10.17
15 0.711 -164.36 1.508 57.05 0.085 26.37 0.508 -64.01 1.25 3.57 9.45
16 0.703 -169.44 1.437 52.71 0.086 26.37 0.511 -67.45 1.32 3.15 8.86
17 0.696 -174.29 1.371 48.36 0.088 26.51 0.507 -70.47 1.38 2.74 8.26
18 0.690 -179.19 1.308 44.18 0.090 26.72 0.504 -73.67 1.44 2.33 7.69
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