NE85002
SERIES
FEATURES
CLASS A OPERATION
HIGH EFFICIENCY:
ADD
39% TYP
BROADBAND CAPABILITY
PACKAGE OPTIONS:
Chip
Hermetic Package
PARTIALLY MATCHED INPUT FOR PACKAGED
DEVICES
PROVEN RELIABILITY
DESCRIPTION
The NE8500295 power GaAs FET covers the 3.5 to 8.5 GHz
frequency range with three different Class A, 2 W partially
matched devices. Each packaged device has an input lumped
element matching network.
The NE8500200 is the six-cell recessed gate chip used in the
"95" package. The device incorporates a Ti-Al gate structure,
SiO
2
glassivation and plated heat sink technology.
PART NUMBER
NE8500200
1
NE8500295-4
NE8500295-6
NE8500295-8
PACKAGE OUTLINE
00 (CHIP)
95
95
95
SYMBOLS
PARAMETERS AND CONDITIONS UNITS MIN
TYP MAX MIN
TYP MAX MIN
TYP MAX MIN
TYP MAX
I
DSS
Saturated Drain Current
V
DS
= 2.5 V, V
GS
= 0 V
mA
950
1900
950
1900
950
1900
950
1900
V
P
Pinch-off Voltage
V
DS
= 2.5 V, I
D
= 8 mA
V
-3.0
-1.0
-3.0
-1.0
-3.0
-1.0
-3.0
-1.0
g
m
Transconductance
V
DS
= 2.5 V, I
D
= I
DSS
mS
600
600
600
600
BV
GDO
Drain-Gate Breakdown Voltage
I
GD
= 8 mA
V
18
18
18
18
I
GS
Gate to Source Current, V
DS
= 10 V,
I
DSQ
= 450 mA, P
OUT
= P
TEST
mA
-2.4
2.4
-2.4
2.4
-2.4
2.4
-2.4
2.4
R
TH
Thermal Resistance (Channel-to-Case)
C/W
10
15
15
15
15
P
TEST2
Power Output at Test Point
V
DS
= 10 V, I
DS
= 450 mA set
P
IN
= 27.0 dBm
dBm
33.8
33.5
P
IN
= 24.5 dBm
dBm
33.8
P
IN
= 25.5 dBm
dBm
33.8
G
L
Linear Gain
V
DS
= 10 V, I
DS
= 450 mA
dB
8.0
9.0
10.5
9.5
8.0
ADD3
Power Added Efficiency
at P
TEST
%
42
47
45
39
ELECTRICAL CHARACTERISTICS
(T
C
= 25
C)
TYPICAL PERFORMANCE
PART
P
OUT
FREQUENCY
G
L
NUMBER
RANGE
(dBm)
(GHz)
(dB)
NE8500200
33.8 MIN
2.0 to 10
8.0 MIN
NE8500295-4
33.8 MIN
3.5 to 4.5
10.5 MIN
NE8500295-6
33.8 MIN
5.5 to 6.5
9.5 MIN
NE8500295-8
33.5 MIN
7.5 to 8.5
8.0 MIN
SELECTION CHART
2 WATT C-BAND
POWER GaAs MESFET
Notes:
1. Six-cell chip: all cells are used. RF performance of the chip is
determined by packaging 10 chips per wafer. Wafer rejection
criteria for standard devices are 2 rejects per 10 samples.
2. This is a production test. Test frequencies are: -4 @ 4.2 GHz,
-6 @ 6.5 GHz, -8 and NE8500200 @ 8.5 GHz.
3.
California Eastern Laboratories
ADD =
x 100%
P
OUT
- P
IN
V
DS
- I
D
ABSOLUTE MAXIMUM RATINGS
(T
C
= 25
C)
NE85002 SERIES
SYMBOLS
PARAMETERS
UNITS
RATINGS
V
DS
Drain to Source Voltage
V
15
V
GD
Gate to Drain
V
-18
V
GS
Gate to Source Voltage
V
-12
I
D
Drain Current
A
2.5
I
G
Gate Current
mA
13
T
CH
Channel Temperature
C
175
T
STG
Storage Temperature
C
-65 to +175
P
T
Total power Dissipation
W
13
Total Power Dissipation, P
T
(W)
Case Temperature, T
C
(
C)
Input Power, P
IN
(dBm)
Output Power, P
OUT
(dBm)
OUTPUT POWER vs. INPUT POWER
POWER DERATING CURVE
TYPICAL PERFORMANCE CURVE
(T
C
= 25
C)
SYMBOLS
PARAMETERS
UNITS
MIN
TYP
MAX
V
DS
Drain to Source Voltage
V
9
10
T
C
Channel Temperature
C
130
G
COMP
Input Power
dB
COMP
3
Rg
Gate Resistance
k
1
2
RECOMMENDED
OPERATING CONDITIONS
FREQUENCY
Z
IN
Z
OUT
GHz
5.90
13.16 - j44.75
11.48 - j21.52
6.20
22.77 - j59.68
16.16 - j25.02
6.40
149.70 - j73.98
23.44 - j40.36
6.50
43.58 - j56.13
12.87 - j11.86
NE8500295-6
LARGE SIGNAL IMPEDANCES
Z
IN
is the impedance of the input matching circuit as seen by the gate.
Z
OUT
is the impedance of the output matching circuit as seen by the
drain.
12
8
4
0
0 50 100 150 200
0
40
20
10
30
-4
-6
-8
0
5
10
15
20
25
30
35
40
NE85002 SERIES
TYPICAL SCATTERING PARAMETERS
(T
C
= 25
C)
0.1
1.003
-81.900
14.230
135.700
0.009
-14.900
0.428
-158.600
-0.384
31.990
0.5
0.971
-161.600
3.768
90.400
0.010
26.000
0.414
-173.100
0.655
25.761
1.0
0.972
-179.600
2.006
69.100
0.012
19.700
0.429
-178.200
0.923
22.231
1.5
0.987
169.800
1.479
51.400
0.013
27.200
0.457
-178.700
0.521
20.560
2.0
0.976
160.100
1.255
34.300
0.017
27.600
0.479
179.500
0.804
18.682
2.5
0.965
150.700
1.205
15.900
0.018
18.300
0.514
177.400
0.976
18.257
3.0
0.927
145.700
1.149
-2.500
0.018
20.200
0.588
-176.700
1.876
12.657
3.5
0.886
139.600
1.343
-30.300
0.020
11.800
0.700
-176.000
1.464
14.232
4.0
0.843
134.633
1.486
-73.367
0.014
20.367
0.864
173.900
1.049
18.899
4.5
0.882
129.600
1.233 -126.500
0.021
76.600
0.931
153.400
-0.147
17.687
5.0
0.929
118.200
0.738 -166.200
0.037
54.400
0.838
137.500
-0.011
12.999
5.5
0.945
106.500
0.455
166.100
0.047
38.400
0.785
127.500
0.325
9.859
6.0
0.937
96.800
0.303
143.700
0.054
25.900
0.769
121.100
1.053
6.087
6.5
0.929
87.900
0.227
124.600
0.058
15.100
0.763
116.400
1.876
0.532
7.0
0.919
76.700
0.190
104.500
0.069
7.600
0.756
112.300
2.389
-2.190
7.5
0.905
60.100
0.186
80.200
0.086
0.300
0.725
107.100
2.654
-3.736
8.0
0.883
34.100
0.187
47.000
0.117
-18.200
0.676
96.600
2.868
-5.411
8.5
0.843
0.700
0.174
8.700
0.142
-44.800
0.629
80.500
3.794
-7.842
9.0
0.779
-29.300
0.144
-26.400
0.141
-74.800
0.623
66.100
6.295
-10.881
9.5
0.723
-59.300
0.124
-51.800
0.133
-95.500
0.647
55.900
8.799
-12.745
10.0
0.683
-97.000
0.116
-74.600
0.114
-110.500
0.661
52.500
11.714
-13.614
NE8500295-4
V
DS
= 10 V, I
DS
= 450 mA
FREQUENCY
S
11
S
21
S
12
S
22
K
MAG
1
(GHz)
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
(dB)
Note:
1. Gain Calculations:
MAG =
|S
21
|
|S
12
|
K - 1
).
2
(
K
= S
11
S
22
- S
21
S
12
When K
1, MAG is undefined and MSG values are used. MSG =
|S
21
|
|S
12
|
, K = 1 + |
| - |S
11
| - |S
22
|
2
2
2
2 |S
12
S
21
|
,
S22
0.1 GHz
S22
10 GHz
S11
10 GHz
S11
0.1 GHz
+120
+150
180
+90
+60
+30
-120
-150
-90
-60
-30
0
S
21
10 GHz
S
21
0.1 GHz
S
12
0.1 GHz
S
12
10 GHz
NE85002 SERIES
TYPICAL SCATTERING PARAMETERS
(T
C
= 25
C)
FREQUENCY
S
11
S
21
S
12
S
22
K
MAG
1
(GHz)
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
(dB)
0.1
0.963
-59.200
16.698
149.400
0.003
29.700
0.373
-169.500
0.408
37.455
0.5
0.952
-149.100
5.714
97.600
0.016
22.800
0.463
-171.200
0.377
25.528
1.0
0.947
-173.800
3.033
74.200
0.017
20.000
0.485
-179.300
0.769
22.514
1.5
0.963
172.900
2.152
56.400
0.018
17.400
0.512
177.700
0.653
20.776
2.0
0.956
161.800
1.701
41.000
0.021
22.200
0.532
173.900
0.859
19.085
2.5
0.949
150.900
1.472
26.000
0.022
21.200
0.556
172.700
1.018
17.440
3.0
0.948
140.700
1.328
11.300
0.029
20.600
0.578
170.500
0.806
16.608
3.5
0.898
138.500
1.164
0.700
0.031
17.400
0.605
168.000
1.547
11.388
4.0
0.876
128.200
1.168
-13.300
0.036
11.000
0.607
163.200
1.554
10.727
4.5
0.847
116.000
1.278
-28.700
0.041
4.800
0.595
158.400
1.529
10.646
5.0
0.813
101.800
1.432
-47.900
0.048
-6.900
0.616
152.300
1.250
11.735
5.5
0.737
85.400
1.648
-71.000
0.054
-23.900
0.664
146.000
1.072
13.203
6.0
0.560
69.800
1.926
-99.800
0.057
-47.400
0.757
140.000
0.966
15.288
6.5
0.264
73.200
2.118 -137.200
0.046
-82.700
0.871
131.200
1.101
14.693
7.0
0.344
127.700
1.924 -176.300
0.023
-123.600
0.920
120.200
1.866
13.858
7.5
0.539
117.600
1.625
151.000
0.013
99.500
0.884
110.200
3.241
12.959
8.0
0.623
90.700
1.406
119.500
0.038
36.300
0.838
95.900
1.283
12.486
8.5
0.637
53.500
1.163
84.600
0.075
-1.900
0.779
74.700
1.035
10.759
9.0
0.610
16.000
0.868
52.600
0.096
-41.300
0.718
56.000
1.653
4.837
9.5
0.574
-16.900
0.676
25.900
0.099
-69.300
0.693
47.000
2.524
1.493
10.0
0.514
-55.800
0.561
-0.600
0.090
-88.500
0.673
43.200
3.931
-0.936
NE8500295-6
V
DS
= 10 V, I
DS
= 450 mA
Note:
1. Gain Calculations:
MAG = Maximum Available Gain
MSG = Maximum Stable Gain
MAG =
|S
21
|
|S
12
|
K - 1
).
2
(
K
= S
11
S
22
- S
21
S
12
When K
1, MAG is undefined and MSG values are used. MSG =
|S
21
|
|S
12
|
, K = 1 + |
| - |S
11
| - |S
22
|
2
2
2
2 |S
12
S
21
|
,
S
22
10 GHz
S
11
10 GHz
S
22
0.1 GHz
S
11
0.1 GHz
+120
+150
180
+90
+60
+30
-120
-150
-90
-60
-30
0
S
21
10 GHz
S
21
0.1 GHz
S
12
0.1 GHz
S
12
10 GHz
TYPICAL SCATTERING PARAMETERS
(T
C
= 25
C)
NE85002 SERIES
NE8500295-8
V
DS
= 10 V, I
DS
= 450 mA
FREQUENCY
S
11
S
21
S
12
S
22
K
MAG
1
(GHz)
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
(dB)
0.1
0.971
-54.800
17.977
150.900
0.004
35.400
0.427
-155.900
0.030
36.527
0.5
0.937
-146.300
6.354
98.200
0.016
24.000
0.464
-172.300
0.452
25.989
1.0
0.934
-174.000
3.391
74.500
0.018
22.300
0.492
-178.900
0.821
22.751
1.5
0.947
170.900
2.382
56.200
0.020
20.800
0.513
177.400
0.811
20.759
2.0
0.939
158.300
1.869
40.300
0.026
28.100
0.534
173.300
0.954
18.566
2.5
0.921
153.800
1.473
27.700
0.023
22.700
0.573
169.500
1.495
13.906
3.0
0.906
145.400
1.335
15.900
0.027
20.900
0.592
168.100
1.570
12.501
3.5
0.887
137.000
1.272
2.700
0.034
19.900
0.603
165.700
1.497
11.563
4.0
0.866
126.200
1.252
-11.100
0.041
10.200
0.602
160.300
1.423
10.984
4.5
0.836
113.900
1.343
-25.500
0.044
6.000
0.583
155.200
1.556
10.456
5.0
0.805
98.800
1.483
-43.600
0.056
-4.100
0.592
149.200
1.211
11.454
5.5
0.734
80.200
1.658
-64.900
0.065
-18.900
0.628
142.800
1.074
12.409
6.0
0.587
57.400
1.893
-90.600
0.073
-41.500
0.695
138.700
0.948
14.138
6.5
0.303
23.500
2.124 -122.700
0.075
-69.900
0.788
133.400
0.925
14.521
7.0
0.116
-152.800
2.078 -159.400
0.063
-101.500
0.874
125.700
1.015
14.431
7.5
0.394
158.700
1.824
167.500
0.042
-134.100
0.883
115.900
1.421
12.522
8.0
0.536
126.700
1.587
137.200
0.025
165.800
0.858
102.200
2.264
11.697
8.5
0.570
91.000
1.413
103.500
0.033
49.500
0.843
81.500
1.665
11.551
9.0
0.497
45.200
1.105
66.600
0.069
-26.200
0.773
59.800
1.861
6.692
9.5
0.354
3.800
0.787
38.600
0.067
-59.800
0.747
51.700
3.631
2.173
10.0
0.288
-34.500
0.622
17.000
0.068
-86.200
0.712
46.800
5.336
-0.631
Note:
1. Gain Calculations:
MAG =
|S
21
|
|S
12
|
K - 1
).
2
(
K
= S
11
S
22
- S
21
S
12
When K
1, MAG is undefined and MSG values are used. MSG =
|S
21
|
|S
12
|
, K = 1 + |
| - |S
11
| - |S
22
|
2
2
2
2 |S
12
S
21
|
,
MAG = Maximum Available Gain
MSG = Maximum Stable Gain
S
22
10 GHz
S
22
0.1 GHz
S
11
10 GHz
S
11
0.1 GHz
+120
+150
180
+90
+60
+30
-120
-150
-90
-60
-30
0
S
21
10 GHz
S
21
0.1 GHz
S
12
0.1 GHz
S
12
10 GHz
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