.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
Features
Operates Over Full PCN/PCS/PHS Bands
Operates Over +3 V to +5 V Supply Voltage
+24 dBm P
1dB
Typical at PA Out
35% PAE @ P
1dB
for Linear Operation
On-Chip T/R Switch, Linear Operation to +30 dBm
Low Cost SSOP-28 Plastic Package
Description
M/A-COM’s AM55-0004 power amplifier/switch integrates a
power amplifier and transmit/receive switch in a low cost
SSOP package. The power amplifier delivers +24 dBm of
linear power with high efficiency and can be operated at
supply voltages as low as 2.7 V. It is ideally suited for
QPSK or other linearly modulated systems in the 1.8 to 2.0
GHz frequency band.
The power amplifier/switch is fully monolithic and requires
only one output capacitor for power match. The T/R switch
achieves good insertion loss and isolation without degrading
the overall linearity.
The AM55-0004 is ideally suited for final stage power
amplification in linear TDD systems. The integrated switch is
convenient for duplexing. The AM55-0004 can also be used
as a driver stage for high power systems. Typical applications
include Japanese PHS systems or PCN/PCS transmit chains.
M/A-COM’s AM55-0004 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 V2.00
M/A-COM Inc. n 1011 Pawtucket Boulevard, Lowell, MA 01853 USA n Telephone: 800-366-2266
1
250 mW Linear Power Amplifier and T/R Switch
1.8 - 2.0 GHz AM55-0004
SSOP-28
Preliminary Specifications
Parameter Units Min. Typ. Max.
Power Amplifier
Linear Gain dB 22 24
Power Output @ P
1dB
at PA OUT port dBm 22.5 24
Current From Positive Supply @ P
1dB
mA 75 175 275
Input VSWR 2.0:1
T/R Switch
Insertion Loss dB 0.6 1.0
Input Match 1.5:1
Isolation dB 15 20
Typical Electrical Specifications
Test conditions: Frequency: 1.9 GHz, V
DD1
= V
DD2
= 4.8 V ±10%, V
G1
adjusted for 30 mA quiescent bias on V
DD1
,
V
G2
adjusted for 65 mA quiescent bias on V
DD2
, T
A
= +25°C
l
l
l
l
l
l
Part Number Description
AM55-0004 SSOP 28-Lead Plastic Package
AM55-0004TR Forward Tape & Reel*
AM55-0004RTR Reverse Tape & Reel*
AM55-0004SMB Designer’s Kit
Ordering Information
*
If specific reel size is required, consult factory for part
number assignment.
Dimensions are inches over millimeters.