ST STM351-2 User Manual
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WIRELESS LOCAL LOOP APPLIC ATIONS
.LINEAR POWER AMPLIFIER
.325-351 MHz
.20 VOLTS
.INPUT/OUTPUT 50 OHMS
OUT
1.0W
=
21 dB
=
(2.0 W PEP)
AVG
.P
.GAIN
DESCRIPTION
The STM351-2 mod ule is designed to be used
as a linear RFPowerAmplifierforWLL or other
fixed radio access subscriber applications.
This particular model is one o f several in design covering the 300-500 MHz frequency
rang e i n i ndi vidual bandwidth s of 2 5 MHz
each.
Band splits and corresponding p art numbers
for all bands are as follows:
STM 351 -2
RF POWER MODULE
PRELIMI NARY D ATA
CASE STYLE H170
ORDERCODE BRANDING
STM351-2 STM351-2
PIN CONNE CT I ON
STM326-2 300-326 MHz
STM351-2 325-351 MHz PROTOTYPES
STM376-2 350-376 MHz AVAILABLE
STM401-2 375-401 MHz
STM426-2 400-426 MHz
STM451-2 425-451 MHz
STM476-2 450-476 MHz
STM500-2 475-500 MHz
ABSOL UTE MAXIMUM RATINGS (T
Symbol Parameter Valu e Unit
V
CC
I
CC(q)
I
CC
P
P
OUT
T
STG
T
IN
C
DC Sup ply Voltage +21 Vdc
Quiescent Current (pin 7) 200 mAdc
Operating Current (pin 7) 500 mAdc
RF Input Power 30 mW
RF O utp ut Power 2. 0 W
Storage Temperature -30 to +100
Operating Case Temperature
case
=25°C)
1. RF Input 5. I
2. N/C 6. GND
3. GND 7. V
4. N/C 8. RF output
− 20 to +6 0
BB
(+20VDC)
CC
AVG
°
C
°
C
June 15, 1998 1/3
STM 3 51 -2
ELECTRICAL SPECIFICATIONS (T
Symbol Parameter Test Condition s
= 30°C, VCC= 20.0Vdc, VBB=
case
8.8 Vdc)
Value
Min. Typ. Max.
BW Frequency Range 325 — 351 MHz
Power Gain
G
P
η
Efficiency
Input VSWR P
I
CC(q)
Quiescent
P
P
P
=
1.0 W*
OUT
=
1.0 W*
OUT
=
1.0 W* ZS,Z
OUT
=
0W
IN
50Ω ——1.5:1VSWR
=
L
21 23 25 dB
11 12.5 — %
110 120 13 0 mA
Current
Collector Supply
I
CC
P
OUT
=
1.0 W*
—375425mA
Current
I
Bias Current
BB
H Harmonics
IMD Intermodulation
P
P
P
=
1.0 W*
OUT
=
1.0 W* F = 325 MHz
OUT
=
1.0 W*
OUT
—65—mA
—-34
-30
-46 -40 dBc
Distortion
— Load Mismatch
— Stability
Load VSWR
P
=
OUT
= ∞:1 (All phase angles)
1.0 W*
Load VSWR = 5:1 (All phase angles)
P
=
1.0 W*
OUT
No Degradation in Ou tput
Power a ft er Load Restoration
All Spurious outputsmore
than 50dB b elow carrier
Uni t
dBc
* 2 Tone Test, 50 KHz spacing: P
OUT
=1.0W
AVG
(2.0 W
PEP
)
MODULE DC AND TE ST FIX TU RE CONFIG URAT I ON
+8.8VDC +20 VDC
RF
IN
0.1 uF
300 pF
50 Ω Line 50 Ω Line
N/C
120
Ω
3.3 uF
1W
N/C
1000 pF
1000 pF
* Bead
10 uF
300 pF
RF
OUT
2/3
12 34 567 8
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