D2021UK
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
Document Number 6906
Issue 1
PDPower Dissipation
BVDSS Drain – Source Breakdown Voltage
BVGSS Gate – Source Breakdown Voltage
ID(sat) Drain Current
Tstg Storage Temperature
TjMaximum Operating Junction Temperature
35W
65V
±20V
3A
–65 to 150°C
200°C
MECHANICAL DATA GOLD METALLISED
MULTI-PURPOSE SILICON
DMOS RF FET
7.5W – 28V – 1GHz
SINGLE ENDED
FEATURES
• SIMPLIFIED AMPLIFIER DESIGN
• SUITABLE FOR BROAD BAND APPLICATIONS
•LOW C
rss
• SIMPLE BIAS CIRCUITS
• LOW NOISE
• HIGH GAIN – 13 dB MINIMUM
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
APPLICATIONS
•VHF/UHF COMMUNICATIONS
from DC to 1 GHz
METAL GATE RF SILICON FET
TetraFET
1
2
3
4
8
7
6
5
M
N
BC
A
E
FG
D
H
K
L
J
P
SO8 PACKAGE
PIN 1 – SOURCE
PIN 2 – DRAIN
PIN 3 – DRAIN
PIN 4 – SOURCE
PIN 5 – SOURCE
PIN 6 – GATE
PIN 7 – GATE
PIN 8 – SOURCE
Dim.
A
B
C
D
E
F
G
H
J
K
L
M
N
P
mm Tol. Inches Tol.
4.06 ±0.08 0.160 ±0.003
5.08 ±0.08 0.200 ±0.003
1.27 ±0.08 0.050 ±0.003
0.51 ±0.08 0.020 ±0.003
3.56 ±0.08 0.140 ±0.003
4.06 ±0.08 0.160 ±0.003
1.65 ±0.08 0.065 ±0.003
+0.25 +0.010
0.76 0.030
-0.00 -0.000
0.51 Min. 0.020 Min.
1.02 Max. 0.040 Max.
45° Max. 45° Max.
0° Min. 0° Min.
7° Max. 7° Max.
0.20 ±0.08 0.008 ±0.003
2.18 Max. 0.086 Max.
4.57 ±0.08 0.180 ±0.003
ROHS COMPLIANT
D2021UK
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
Document Number 6906
Issue 1
Parameter Test Conditions Min. Typ. Max. Unit
VGS = 0 ID= 10mA
VDS = 28V VGS = 0
VGS = 20V VDS = 0
ID= 10mA VDS = VGS
VDS = 10V ID= 0.6A
PO= 7.5W
VDS = 28V IDQ = 0.3A
f = 1GHz
VDS = 0 VGS = –5V f = 1MHz
VDS = 28V VGS = 0 f = 1MHz
VDS = 28V VGS = 0 f = 1MHz
V
mA
μA
V
S
dB
%
—
pF
pF
pF
ELECTRICAL CHARACTERISTICS (Tcase = 25°C unless otherwise stated)
Drain–Source
BVDSS Breakdown Voltage
Zero Gate Voltage
IDSS Drain Current
IGSS Gate Leakage Current
VGS(th) Gate Threshold Voltage*
gfs Forward Transconductance*
GPS Common Source Power Gain
ηDrain Efficiency
VSWR Load Mismatch Tolerance
Ciss Input Capacitance
Coss Output Capacitance
Crss Reverse Transfer Capacitance
65
3
1
17
0.54
13
40
20:1 36
18
1.5
RTHj–case Thermal Resistance Junction – Case Max. 5°C / W
THERMAL DATA
* Pulse Test: Pulse Duration = 300 μs , Duty Cycle ≤2%
D2021UK
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
Document Number 6906
Issue 1
Figure 1
Gain vs. Output Power. Figure 2
Power added efficiency vs. Output Power.
0
2
4
6
8
10
12
14
16
18
20
0 2 4 6 8 10 12 14
Pout (W)
Gain (dB)
Tuned for maximum gain at 7.5 W
Tuned for maximum power
F= 1 GHz
Idq= 0.3 A
Vds= 28 V
0
5
10
15
20
25
30
35
40
45
50
02468101214
Pout (W)
Power added efficiency (%)
Tuned for maximum gain at 7.5W
Tuned for maximum power
F= 1 GHz
Idq= 0.3 A
Vds= 28 V
Typical S Parameters
Figure 3
Output Power vs. Input Power.
0
2
4
6
8
10
12
14
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8
Pin (W)
Pout (W)
Tuned for maximum gain at 7.5 W
Tuned for maximum power
F= 1 GHz
Idq= 0.3 A
Vds= 28 V
-60
-50
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
PEP (W)
IMD 3 (dBc)
Tuned for maximum gain at 7.5W
Tuned for maximum power
F1=999.9MHz
F2=1GHz
Idq= 0.3 A
Vds= 28 V
Figure 4
IMD 3 vs. PEP
! Vds=28V Idq=0.3A
# MHzSMAR50
!Freq
!MHz mag ang mag ang mag ang mag ang
100 0.79 -113 16 108 0.027 21 0.6 -73
200 0.76 -141 8.1 77 0.022 8 0.59 -102
300 0.78 -153 5.3 62 0.016 19 0.66 -118
400 0.8 -162 3.6 49 0.014 56 0.71 -130
500 0.84 -169 2.8 38 0.023 84 0.75 -139
600 0.87 -175 2.1 24 0.036 87 0.79 -147
700 0.89 -180 1.6 16 0.047 86 0.82 -154
800 0.9 176 1.2 17 0.058 91 0.83 -164
900 0.9 172 1.1 16 0.083 93 0.84 -168
1000 0.89 165 1 8 0.111 86 0.86 -172
S11 S21 S12 S22
D2021UK
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
Document Number 6906
Issue 1
0.1
1
10
100
0 5 10 15 20 25 30
Vds, Drain to Source Voltage (V)
C, Capacitance (pF)
Ouput Capacitance
Input Capacitance
Reverse Transfer Capacitance
Figure 6 – Typical CV Characteristics.
Figure 5 – Typical IV Characteristics.
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
0 5 10 15 20 25 30
Drain Voltage (Volts)
Drain Current (Amps)
VGS=13V
VGS=12V
VGS=11V
VGS=10V
VGS=9V
VGS=8V
VGS=7V
VGS=6V
VGS=5V
VGS=4V
D2021UK
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
Document Number 6906
Issue 1
100uF
22
L2
30pF
100nF
3.3K
10K
10pF
1-16pF
1-16pF
L1
100nF
30pF
1-16pF
1-16pF
D2021UK
Gate-Bias
+28V
T1 T2 T3 T4
T5 T6 T7
Substrate 0.8mm PTFE/glass, Er=2.5
All microstrip lines W=2.2mm
T1 3mm
T2 28mm
T3 18mm
T4 6mm
T5 10mm
T6 14mm
T7 35mm
L2 1.5 turns 0.5mm enamelled copper wire on Siemens B62152A7 2 hole ferrite core
L1 8 turns 0.5mm dia enamelled copper wire, 3mm i.d.
D2021UK 1GHz TEST FIXTURE
