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SD4590
RF & MICROWAVE TRANSISTORS
800-960 MHz CELLULAR BASE STATION

.
. GOLD METALLIZATION

.
.
DIFFUSED EMITTER BALLASTING
INTERNAL INPUT/OUTPUT MATCHING

.
.
COMMON EMITTER CONFIGURATION
DESIGNED FOR LINEAR OPERATION

. HIGH SATURATED POWER CAPABILITY
26 VOLT, 900 MHz PERFORMANCE
POUT = 150 W MIN. .400 x .860 4LFL (M208)
GAIN = 8.5 dB MIN. epoxy sealed

. IMD3 = -28dB MAX. @ POUT = 150W PEP
INHERENT RUGGEDNESS:
LOAD MISMATCH TOLERANCE OF
ORDER CO DE
SD4590
BRANDING
SD4590
5:1 MIN. VSWR
3 dB OVERDRIVE CAPABILITY
PIN CONNECTION

DESCRIPTION
The SD4590 is designed for both analog and digital
cellular base stations over the 800 to 960 MHz
frequency range, specifically those systems re-
quiring the high linearity and efficiency afforded
by class AB operation. Integrated input/output pre-
matching simplifies amplifier design. Ruggedness,
MTTF, and linearity are enhanced using diffused 1. Collector 3. Base
emitter resistors and refractory/gold metallization. 2. Emitter

ABSOLUTE MAXIMUM RATINGS (T case = 25