Features
Highly Integrated Power Amplifier With T/R and
Diversity Switches
Operates Over 2.7 V to 6 V Supply Voltage
High Linear Output Power (P
1dB: +24 dBm)
Individual Gate Control for Each Amplifier Stage
Low Cost SSOP-28 Plastic Package
Description
M/A-COM’s AM55-0003 is a GaAs power amplifier with
integrated transmit/receive and an antenna diversity switch
in a low cost SSOP 28 plastic package. The power
amplifier delivers +24 dBm of linear power with high
efficiency and can be operated with voltages as low as 2.7
volts. The power amplifier switch is fully monolithic. The
T/R and diversity switches achieve good insertion loss and
isolation without degrading the overall linearity. The
switches can be controlled with CMOS logic levels.
The AM55-0003 is ideally suited for QPSK, BPSK or other
linearly modulated systems in the 2.4 GHz ISM frequency
band. It can also be used in GFSK systems where levels of
+25 dBm are required. Typical applications include WLAN
and wireless portable data collection. This power amplifier
can be combined with a transceiver IC (MD58-0001 or
MD58-0002) to form a complete RF front end.
M/A-COM's AM55-0003 is fabricated using a mature
0.5-micron gate length GaAs process. The process features
full passivation for increased performance and reliability.
Specifications Subject to Change Without Notice
V 2.0
M/A-COM Inc.
s
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
s
Telephone: 800-366-2266
1
250 mW Power Amplifier with T/R and Diversity Switches
2.4 - 2.5 GHz
AM55-0003
SSOP-28
Preliminary Specifications
Parameter
Units
Min.
Typ.
Max.
Power Amplifier
Linear Gain
dB
24
28
32
VSWR In/Out
1.75:1
Output Power @ P
1dB
dBm
22.5
24.5
Second Harmonic @ P
1dB
dBc
-20
0
Third Harmonic @ P
1dB
dBc
-30
-10
I
DD @ P1dB (VDD1 + VDD2 + VDD3)
mA
270
375
T/R and Diversity Switches
Insertion Loss
dB
1.2
Isolation
dB
10
12
VSWR In/Out
1.5:1
Typical Electrical Specifications
Test Conditions: Frequency: 2.45 GHz, V
DD 1,2, 3 = 5 V±5%, VG1 adjusted for 20 mA quiescent bias on VDD1, VG2
adjusted for 70 mA quiescent bias on V
DD2 , VG3 adjusted for 90 mA quiescent bias on VDD3, TA = +25°C
.025
0,64
.057
±.003
1,45
±0,08
.0275
+.0025
-.0025
0,7
+0,06
-0,06
9,91 +0,09
-0,1
.3900
+.0037
-.0041
PIN 1
.236
±.008
5,99
±0,2
.004 (0,10)
.007
±.003
0,18
±0,08
.010
+.004
-.001
0,25 +0,1
-0,03
.1540
+.0034
-.0043
3,91
+0,09
-0,11
.015 (0,38) X 45
°
.028
+.022
-.013
0,71
+0,56
-0,33
0-8
°
.0080
+.0018
-.0005
+0,05
-0,01
0,2
Part Number
Description
AM55-0003
SSOP 28-Lead Plastic Package
AM55-0003TR
Forward Tape & Reel
*
AM55-0003RTR
Reverse Tape & Reel
*
AM55-0003SMB
Designer’s Kit
Ordering Information
* If specific reel size is required, consult factory for part number
assignment.
Dimensions are inches over millimeters
q
q
q
q
q
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