
3236 Scott Boulevard
Santa Clara, California 95054
Phone: (408) 986-5060
Fax: (408) 986-5095
CMM1431-SM
Features
32.2 dBm
(Typ.)
Saturated Output Power
30.5 dB
(Typ.)
Linear Gain
Fully Matched
Unconditionally Stable
Low-Cost, Surface Mount Package
Optimum Thermal Dissipation
Applications
Ku-Band VSAT Transmit Subsystems
Description
The CMM1431-SM is a four-stage pHEMT GaAs
MMIC power amplifier that is ideally suited for transmit sub-
systems designed for Ku-Band VSAT applications. The
CMM1431-SM provides 30.5 dB linear gain and delivers 1.5
watts of output power at saturation operating from 13.50 to
14.50 GHz frequency.
The unconditional stability and internal matching
provides for reduction of external components making this
product a simple and low-cost solution. The low-cost, 6mm x
6mm x 1.6mm surface mount package, offers the same excel-
lent RF and thermal properties as a typical flange package.
13.50 to 14.50 GHz
1.5 Watt Power Amplifier
Advanced Product Specifications
October 2003
(1 of 4)
Pin Functional Diagram
Maximum Ratings
(TA = -40°C to +75°C) Operation outside these limits can cause permanent damage.
Parameter
Typ
Drain Voltage (+Vdd)
8.5
Gate Voltage (Vgg)
-3.0
Quiescent Current (Idq)
1000
Gate Current (Ig)
5
Units
Volts
Volts
mA
mA
Parameter
RF Input Power (Pin)
Dissipated Power (Pdiss)
Storage Temperature
Operating Backside Temperature
Typ
7.0
7.2
-50 to +150
-40 to +75
Units
dBm
Watts
°C
°C
Parameter
Frequency Range
Output Power
Saturated Output Power
Saturated Output Power Variation Over operating frequency
Linear Gain
Linear Gain Variation
Input Reflection Coefficient
Output Reflection Coefficient
Gate Supply Voltage
Drain Current
Power Added Efficiency
Condition
Min
13.50
30.5
31.2
Typ
Max
14.50
Units
GHz
dBm
dBm
dBm
dB
dB
dB
dB
Volts
mA
%
@ 1dB compression
Pin = 5.0 dBm
31.5
32.2
0.5
30.5
1.0
-10.0
-7.0
-0.9
900
26
1.0
34.0
3.0
27.0
Over operating frequency
Idq = 770 mA
At Saturation
At Saturation
-1.1
-0.7
980
22
Electrical Characteristics
(T = +25°C, Vd = 7V, Idq = 770mA)
Vdd 1
GROUND 2
RF IN 3
GROUND 4
Vgg 5
10 Vdd
9 GROUND
8 RF OUT
7 GROUND
6 Vgg
C
Parameter
Saturated Output Power
Linear Gain
Stability
Condition
Variation from Room Temperature
Variation from Room Temperature
Min
-0.5
-2.5
Unconditionally stable
Typ
Max
Units
dBm
dB
3.5
Electrical Specifications
(TA = -40°C to +75°C)