ST STM351-2 User Manual
RF POWER MODULE
WIRELESS LOCAL LOOP APPLIC ATIONS
CASE STYLE H170
.LINEAR POWER AMPLIFIER
.325-351 MHz
.20 VOLTS
.INPUT/OUTPUT 50 OHMS
.P
OUT
=
1.0W
AVG
(2.0 W PEP)
.GAIN
=
21 dB
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 de-
sign 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:
PIN CONNE CT I ON
ORDERCODE BRANDING
STM351-2 STM351-2
ABSOL UTE MAXIMUM RATINGS (T
case
=25
°
C)
Symbol Parameter Valu e Unit
V
CC
DC Sup ply Voltage +21 Vdc
I
CC(q)
Quiescent Current (pin 7) 200 mAdc
I
CC
Operating Current (pin 7) 500 mAdc
P
IN
RF Input Power 30 mW
P
OUT
RF O utp ut Power 2. 0 W
AVG
T
STG
Storage Temperature -30 to +100
°
C
T
C
Operating Case Temperature
− 20 to +6 0
°
C
STM 351 -2
1. RF Input 5. I
BB
2. N/C 6. GND
3. GND 7. V
CC
(+20VDC)
4. N/C 8. RF output
PRELIMI NARY D ATA
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
June 15, 1998 1/3
查询STM376-2供应商
ELECTRICAL SPECIFICATIONS (T
case
= 30
°
C, V
CC
= 20.0Vdc, V
BB
=
8.8 Vdc)
Symbol Parameter Test Condition s
Value
Uni t
Min. Typ. Max.
BW Frequency Range 325 — 351 MHz
G
P
Power Gain
P
OUT
=
1.0 W*
21 23 25 dB
η
Efficiency
P
OUT
=
1.0 W*
11 12.5 — %
Input VSWR P
OUT
=
1.0 W* Z
S
,Z
L
=
50Ω ——1.5:1VSWR
I
CC(q)
Quiescent
Current
P
IN
=
0W
110 120 13 0 mA
I
CC
Collector Supply
Current
P
OUT
=
1.0 W*
—375425mA
I
BB
Bias Current
P
OUT
=
1.0 W*
—65—mA
H Harmonics
P
OUT
=
1.0 W* F = 325 MHz
—-34
-30
dBc
IMD Intermodulation
Distortion
P
OUT
=
1.0 W*
-46 -40 dBc
— Load Mismatch
Load VSWR
=
∞
:1 (All phase angles)
P
OUT
=
1.0 W*
No Degradation in Ou tput
Power a ft er Load Restoration
— Stability
Load VSWR = 5:1 (All phase angles)
P
OUT
=
1.0 W*
All Spurious outputsmore
than 50dB b elow carrier
* 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
12 34 567 8
N/C
N/C
RF
IN
RF
OUT
50 Ω Line 50 Ω Line
120
Ω
1W
10 uF
3.3 uF
1000 pF
0.1 uF
+8.8VDC +20 VDC
* Bead
300 pF
300 pF
1000 pF
STM 3 51 -2
2/3
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