SGK7785-30A
C-Band Internally Matched GaN-HEMT
FEATURES
High Output Power: P5dB=45.0dBm (Typ.)
High Gain: GL=12.0dB (Typ.)
High P.A.E.:
add=39%
(Typ.)
Broad Band: 7.7 to 8.5GHz
Impedance Matched Zin/Zout = 50ohm
Hermetically Sealed Package
DESCRIPTION
The SGK7785-30A is a high power GaN-HEMT that is
internally matched for standard communication bands to
provide optimum power and gain in a 50ohm system.
ABSOLUTE MAXIMUM RATING (Case Temperature Tc=25 deg.C)
Item
Drain-Source Voltage
Gate-Source Voltage
Total Power Dissipation
Storage Temperature
Channel Temperature
Symbol
V
DS
V
GS
P
T
T
stg
T
ch
Rating
26
-10
86.5
-55 to +125
+250
Unit
V
V
W
deg.C
deg.C
RECOMMENDED OPERATING CONDITION
Item
Drain-Source Voltage
Forward Gate Current
Reverse Gate Current
Channel Temperature
Symbol
V
DS
I
GF
I
GR
T
ch
Rg=100ohm
Rg=100ohm
Condition
Limit
<=24
<=6.1
>=-3.2
<+192
Unit
V
mA
mA
deg.C
ELECTRICAL CHARACTERISTICS (Case Temperature Tc=25 deg.C)
Item
Saturated Drain Current
Trans Conductance
Pinch-off Voltage
Output Power
at 5dB G.C.P.
Linear Gain
at Pin=23dBm
Drain Current
at 5dB G.C.P.
Power Added Efficiency at 3dB G.C.P.
Symbol
I
DSS
Gm
V
P
P
5dB
GL
I
DSR
add
G
IM
3
R
th
T
ch
IBK
YES
Class 1C
V
DS
=10V,
V
DS
=24V,
V
DS
=10V,
Condition
V
GS
=0V
I
DS
=1.3A
I
DS
=1.3mA
Limit
Min.
-
-
44.0
11.0
-
-
-
Typ.
6.5
3.0
-3
45.0
12.0
2.7
39
-
-45.0
2.2
83
-
-
-
-
4.0
-
1.2
-
2.6
150
Max.
Unit
A
S
V
dBm
dB
A
%
dB
dBc
deg.C/W
deg.C
V
DS
=24V(Typ.)
I
DSDC
=1.75A(Typ.)
f=7.7 to 8.5 GHz
f=7.7GHz, 8.5GHz
f=10MHz,
2-tone Test
Pout=29.5dBm (S.C.L.)
Channel to Case
(V
DS
x I
DSR
– P
out
+ P
in
) x R
th
Gain Flatness
3
rd
Order Inter modulation
Distortion
Thermal Resistance
Channel Temperature Rise
CASE STYLE
RoHS Compliance
ESD
-40.0
-
-
G.C.P. : Gain Compression Point,
S.C.L. : Single Carrier Level
1000V to <2000V
Note :
Based on ANSI/ESDA/JEDEC JS-001-2012(C=100pF, R=1.5kohm)
Edition 1.3
Aug. 2014
1
SGK7785-30A
C-Band Internally Matched GaN-HEMT
RF Characteristics
Power Derating Curve
100
90
Total Power Dissipation (W)
80
Output Power (dBm)
48
46
44
42
40
38
36
34
32
30
18 20 22 24 26 28 30 32 34 36 38 40
Input Power (dBm)
Output Power &
Power Added Efficiency
vs. Input Power
VDS=24V, IDS(DC)=1.75A
90
80
70
60
50
40
30
20
10
0
Power Added Efficiency (%)
70
60
50
40
30
20
10
0
0
50 100 150 200 250
Case Temperature (deg.C)
300
7.7(GHz)
7.7(GHz)
8.1(GHz)
8.1(GHz)
8.5(GHz)
8.5(GHz)
Output Power vs. Frequency
VDS=24V, IDS(DC)=1.75A
48
46
Output Power (dBm)
44
IM3 & IM5[dBc]
IMD vs. Output Power (S.C.L.)
VDS=24V, IDS(DC)=1.75A
-20
-30
-40
IM3
IM5
42
40
38
36
34
32
30
7.5
7.7
20(dBm)
30(dBm)
P5dB
7.9
8.1
23(dBm)
34(dBm)
8.3
8.5
8.7
Frequency (GHz)
26(dBm)
37(dBm)
-50
-60
-70
22
24
26
28
30
32
34
36
38
40
Output Power (S.C.L.) (dBm)
7.7(GHz)
7.7(GHz)
8.1(GHz)
8.1(GHz)
8.5(GHz)
8.5(GHz)
Edition 1.3
Aug. 2014
2
SGK7785-30A
C-Band Internally Matched GaN-HEMT
Amplifier Circuit Outline
SGK7785-30A
C1
C2
C3
C4
C5
C6
C7
C8
R1
R2
R3
2.0pF
1000pF
0.1uF
1000pF
2.0pF
1000pF
1000pF
0.1uF
51ohm
100ohm
51ohm
C1, C5 : ATC600F(size:0805), +/- 0.1pF
C6, C7 : EMI FILTER MARUWA(FTA352AR102S-S)
Substrate : Rogers RO4003C
h=0.542mm, εr=3.38
Cu=18um
Edition 1.3
Aug. 2014
4