SD2904
RF POWER TRANSISTORS HF/VHF/UHF N-CHANNEL MOSFETs
s s s s s s s s
GOLD METALLIZATION COMMON SOURCE CONFIGURATION 2 - 500 MHz 30 WATTS 28 VOLTS 9.5 dB MIN. AT 400 MHz CLASS A OR AB OPERATION EXCELLENT THERMAL STABILITY M113 epoxy sealed ORDER CODE BRANDING SD2904 SD2904
DESCRIPTION The SD2904 is a gold metallized N-Channel MOS field-effect RF power transistor. It is intended for use in 28 V DC large signal applications up to 500 MHz
PIN CONNECTION
1. Drain 2. Source ABSOLUTE MAXIMUM RATINGS (Tcase = 25 oC)
S ym b o l V DG R VGS ID P DI S S Tj TSTG P a r am e t e r D r a in - G a te Voltage (R G S = 1 M ) G a t e -S o u rc e Voltage D r a in Current P o w e r Dissipation M a x . Operating Junction Temperature S t o ra g e Temperature Va l u e 65 65 20 5 100 200 - 6 5 to 150
3.Gate 4. Source
U ni t V V V A W
o o
V ( B R ) D S S D r a in Source Voltage
C C
THERMAL DATA
R t h ( j- c) R t h(c -s ) J un c t i on - C a s e Thermal Resistance C as e - H e at s i n k Thermal Resistance 1 . 75 0 . 30
o o
C/W C/W
* Determined using a flat aluminum or copper heatsink with thermal compound applied (Dow Corning 340 or equivalent).
November 1999
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SD2904
ELECTRICAL SPECIFICATION (Tcase = 25 oC) STATIC
Sy m b o l V (BR )DSS I DS S IGSS V GS ( Q) V DS ( O N) g FS CISS COSS CR SS V G S = 0V V G S = 0V V G S = 20V V D S = 10V V G S = 10V V D S = 10V V G S = 0V V G S = 0V V G S = 0V P a r a m et e r I D S = 30 mA V D S = 28 V VDS = 0 V I D = 60 mA ID = 3 A ID = 3 A V D S = 28 V V D S = 28 V V D S = 28 V f = 1 MHz f = 1 MHz f = 1 MHz 1.2 47 35 7 1.0 Min. 65 3 2 6.0 1.6 Typ. M a x. Unit V mA A V V mho pF pF pF
REF. 1021310H
DYNAMIC
Sy m b o l P O UT GPS D f = 400 MHz f = 400 MHz f = 400 MHz P a r a m et e r V D D = 28 V V D D = 28 V V D D = 28 V V D D = 28 V P o u t = 30 W P o u t = 30 W P o u t = 30 W I D Q = 50 mA I D Q = 50 mA I D Q = 50 mA I D Q = 50 mA Min. 30 9.5 45 10:1 11.5 55 Typ. M a x. Unit W dB % VSWR
Lo a d f = 400 MHz M is m a t c h A l l Angles
IMPEDANCE DATA
F R EQ . 4 00 MHz
Z I N () 2. 0 - j 2.4
Z D L () 5 . 6 + j 0.4
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SD2904
TYPICAL PERFORMANCE Capacitance vs Drain-Source Voltage
GC8 2 4 8 0
Maximum Thermal Resistance vs Case Temperature
2.1
GC8 2 49 0
1000 f = 1 MHz
C, CAPACITANCES (pF)
100 Ciss
RT H(j-c) (C/W)
Cos s Cr s s 10
1.9
1.7
1 0 10 20 30
25
40
55
70
85
VDS. DRAIN-SOURCE VOLTAGE (VOLTS)
T c , CASE TEMPERATURE (C)
Drain Current vs Gate Voltage
GC 82 500
Gate-Source Voltages vs Case Temperature
5
T = -20C VGS, GATE-SOURCE VOLTAGE (NORMALIZED)
GC8 2510
1. 03
ID, DRAIN CURRENT (A)
4
T = 25C
ID = 750 mA ID = 500 mA ID = 1 A
3
T = 80C
0. 99
ID = 1.25 A
2
ID = 200 mA
1
VD S = 10V
VDD = 10V
ID = 25 mA
0 5 6 7 8 9 10
0. 95 - 25
0
25
50
75
10 0
VGS , GATE-SOURCE VOLTAGE (VOLTS)
Tc, CASE TEMPERATURE (C)
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SD2904
TYPICAL PERFORMANCE Output Power vs Input Power
GC82 5 20
Output Power vs Input Power
GC8 25 30 T = -20C
40 50
P out, OUTPUT POWER (W)
Pout, OUTPUT POWER (W)
Vd d = 28 V
30
T c= 25C f = 400 MHz IDQ = 50 mA
40
IDQ = 50 mA VDD = 28 V f = 400 MHz
T = 25 C
30
20
Vd d = 13.5 V
T = 80C
20
10
10
0
0
0
1
2 Pin, INPUT POWER (W)
3
4
0
1
2
3
4
Pin, INPUT POWER (W)
Output Power vs Voltage Supply
GC82 54 0
Output Power vs Gate Voltage
50
GC8 25 50
Pout, OUTPUT POWER (WATTS)
40 40
Pi n = 4.8 W
Pout, OUTPUT POWER (W)
T = -20C
30
Pi n = 2.4 W
30
VDD = 28 V IDQ = 50 mA f = 400 MHz Pi n = Cons ta nt
T = 25C
20
T = 80C
20
Pi n = 1.2 W
10
10
IDQ = 50 mA f = 400 MHz
0 0 -6 -4 -2 0 2 4 6
13
18 23 VDD, SUPPLY VOLTAGE (VOLTS)
28
VGS, GATE-SOURCE VOLTAGE (VOLTS)
Power Gain vs Output Power
GC8 2 56 0
Efficiency vs Output Power
GC8 25 7 0
14
80
PG , POWER GAIN (dB)
f = 400 MHz VDD = 28 V IDQ = 50 mA
EF FICIEN CY (%)
13
60
12
40
f = 400 MHz VDD = 28 V IDQ = 50 m A
11
20
10 1 6 11 16 21 26 31 36 41
0 1 6 11 16 21 26 31 36 41
Pou t, OUTPUT POWER (W)
Pout, OUTPUT POWER (W)
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SD2904
400 MHz Test Circuit Schematic
400 MHz Test Circuit Component Part List
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SD2904
400MHz Test Circuit Photomaster
REF. 1022015B
Production Test Fixture
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SD2904
M113 (.380 DIA 4/L N/HERM W/FLG) MECHANICAL DATA
mm MIN. A B C D E F G H I J K 6.22 3.05 5.59 19.81 18.29 24.64 9.40 0.10 2.16 4.06 TYP. MAX. 5.84 20.83 18.54 24.89 9.78 0.15 2.67 4.57 7.14 6.48 3.30 0.245 0.120 MIN. 0.220 0.780 0.720 0.970 0.370 0.004 0.085 0.160 inch TYP. MAX. 0.230 0.820 0.730 0.980 0.385 0.006 0.105 0.180 0.281 0.255 0.130
DIM.
Controlling Dimension: Inches
1010936D
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SD2904
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a trademark of STMicroelectronics 1999 STMicroelectronics Printed in Italy All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com .
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