LMP1603
Prelim. 4/99
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Absolute Maximum Supply Voltage
Maximum Heatsink Temperature 1
Absolute Load VSWR
Storage Temperature
10V
100°C
∞:1
–65 to 150°C
VHF SILICON MOSFET
POWER AMPLIFIER MODULE
FEATURES
• HIGH OUTPUT POWER (5.5W min.)
• HIGH EFFICIENCY (> 38%)
• LOW INTERMODULATION DISTORTION
(< -25dBc)
• OPERATION FROM 7.2V SUPPLY
• INTEGRAL ENABLE / DISABLE CONTROL
• UNCONDITIONALLY STABLE FOR ALL
LOADS UP TO 5:1 VSWR
•50
ΩΩINPUT/OUTPUT IMPEDANCE
• RUGGED CONSTRUCTION
• COPPER HEATSINK FOR EXCELLENT
THERMAL DISSIPATION
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
APPLICATIONS
•PMR / PAMR / LMR Systems.
5.5W , 7.2V
150MHz — 162MHz
Notes
1. Output power may be reduced if the temperature rises above this figure.
LMP1603
Prelim. 4/99
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Parameter Min. Typ. Max. Unit
6 7.2 8.4
20 75
100
-30 +80
V
%
°C
°C
OPERATING CONDITIONS
All performance characteristics that are quoted in this specification are for the following conditions.
Supply Voltage
Humidity
Heatsink Temperature
Ambient Temperature
44.0
45.0
56.0
17.0
19.50
3.71
34.19
36.73
39.27
6.25
8.79
11.33
16.41
13.87
1.6
1.0
3.0
2.3
V
SUPPLY
ENABLE
RF
IN
GROUND
GROUND
GROUND
V
SUPPLY
GROUND
RF
OUT
MECHANICAL DATA
(Dimensions in mm)
LMP1603
Prelim. 4/99
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Parameter Test Conditions Min. Typ. Max. Unit
150 162
4.4 5.5 7
-5 0
-25
0.1
-10
-39
-33
25
35
80
1.0
2.0 0.8
2
1
5:1
MHz
W
dBm
dBc
W
dB
dBm
dBm
dBc
dBc
dB
ms
V
V
A
mA
—
ELECTRICAL CHARACTERISTICS (Tamb = -30°C to +80°C)
Frequency Range
Rated Output Power
(CW)
Input Power for Rated Output CW Power
IMD Products at Rated Output Power
Minimum Output Power
Input Return Loss
‘Low’ Frequency Conducted Emissions
‘High’ Frequency Conducted Emissions
Rejection of 2nd Harmonic
(440 - 444MHz)
Rejection of 3rd and higher order
harmonics
Disabled Output Power Reduction
Time to Reach Disabled Output Power
Reduction State
PA Enable Vih
PA Enable Vil
Supply current at rated CW output power
Standby Supply Current
VSWR load mismatch tolerance
The typical rated power of 5.5W is quoted for a
supply voltage of 7.2V. Minimum rated power is
for a supply voltage of 6V (See note 1)
See Note 2
See Note 3
Conducted emissions below 1GHz not including
harmonics of the input frequency and
intermodulation distortion products.
Conducted emissions between 1 - 4 GHz not
including harmonics of the input frequency and
intermodulation distortion products.
The harmonic level is measured relative to the
power at the fundamental frequency.
The harmonic level is measured relative to the
power at the fundamental frequency.
With PA disabled, relative to rated output power.
Time to switch once the control signal has come
within 100mV of its final logic state.
Module enabled
Module disabled
No RF drive
Unconditionally stable under all phases
Notes
1. Output power at 6V measured with maximum Input power for Rated Output CW Power.
2. All Intermodulation (IMD) specifications are quoted for a two-tone test. The tones are of equal amplitude with 600Hz frequency
spacing. The amplitude of each tone is 6dB below the rated PEP to give a composite output power of 5.5W PEP. The level of IMD
is measured in dBc relative to one of the two fundamental tones at the output of the power module.
3. The power delivered by the power amplifier module is controlled by varying the input drive level. The output power is continuously
variable over the quoted power range, i.e. the rated output power to the specified minimum power.
