SM746_14 Datasheet, PDF (1/2 Pages) Polyfet RF Devices – RF POWER VDMOS TRANSISTOR

polyfet rf devices
SM746
General Description
Silicon VDMOS and LDMOS
transistors designed specifically
for broadband RF applications.
Suitable for Military Radios,
Cellular and Paging Amplifier Base
Stations, Broadcast FM/AM, MRI,
Laser Driver and others.
"Polyfet"^TM process features
low feedback and output capacitances,
resulting in high F_t transistors with high
input impedance and high efficiency.
SILICON GATE ENHANCEMENT MODE
RF POWER VDMOS TRANSISTOR
175.0 Watts Single Ended
Package Style AM
HIGH EFFICIENCY, LINEAR
HIGH GAIN, LOW NOISE
Total
Device
Dissipation
270 Watts
Junction to
Case Thermal
Resistance
o
0.65 C/W
ABSOLUTE MAXIMUM RATINGS ( T = 25 ^oC )
Maximum
Junction
Temperature
200 ^oC
Storage
Temperature
o
o
-65 C to 150 C
DC Drain
Current
11.0 A
Drain to
Gate
Voltage
125 V
Drain to
Source
Voltage
125 V
Gate to
Source
Voltage
20 V
RF CHARACTERISTICS ( 175.0 WATTS OUTPUT )
SYMBOL PARAMETER
MIN
TYP MAX UNITS TEST CONDITIONS
Gps
Common Source Power Gain
η
Drain Efficiency
13
65
dB Idq = 0.60 A, Vds = 50.0 V, F = 175 ^MHz
% ^{Idq =} 0.60 A, Vds = 50.0 V, F = 175 MHz
VSWR Load Mismatch Tolerance
5:1 Relative Idq = 0.60 A, Vds = 50.0 V, F = 175 MHz
ELECTRICAL CHARACTERISTICS ( EACH SIDE )
SYMBOL PARAMETER
MIN
TYP MAX UNITS TEST CONDITIONS
Bvdss
Idss
Drain Breakdown Voltage
Zero Bias Drain Current
125
V
Ids = 60.00 mA, Vgs = 0V
6.0
mA
Vds = 50.0 V, Vgs = 0V
Igss
Gate Leakage Current
1
uA
Vds = 0V Vgs = 30V
Vgs
Gate Bias for Drain Current
1
7
V
Ids = 0.30 A, Vgs = Vds
gM
Forward Transconductance
4.8
Mho
Vds = 10V, Vgs = 5V
Rdson Saturation Resistance
0.50
Ohm
Vgs = 20V, Ids = 6.00 A
Idsat
Saturation Current
21.00
Amp
Vgs = 20V, Vds = 10V
Ciss
Common Source Input Capacitance
288.0
pF
Vds = 50.0 Vgs = 0V, F = 1 MHz
Crss Common Source Feedback Capacitance
1.2
pF
Vds = 50.0 Vgs = 0V, F = 1 MHz
Coss Common Source Output Capacitance
102.0
pF
Vds = 50.0 Vgs = 0V, F = 1 MHz
POLYFET RF DEVICES
REVISION 07/17/2003
1110 Avenida Acaso, Camarillo, Ca 93012 Tel:[phone] FAX: [phone] EMAIL:[e-mail] URL:www.polyfet.com