Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 1
Visit www.macom.com for additional data sheets and product information.
Power Amplifier with T/R Switch
for 802.11b Preliminary Release
V 1.3
Features
• WLAN and Bluetooth Applications
• Meets 802.11b Spectral Mask Requirements at +20
dBm PA Output Power
• Integrated SPDT Switch
• Integrated Detector
• Downset Leadframe for Excellent Heat Dissipation
• High Power, Low Power, Shutdown Modes

Description
The AM52-0023 is a two stage power amplifier designed
for 802.11b and other 2.4 GHz applications. This
product includes a detector and a T/R switch. Transmit
specifications are given at the antenna port and include
the switch insertion loss. The small size and height of
the AM52-0023 make it ideal for PC card applications.
The AM52-0023 has three operating modes; High
Power, Low Power, and Shutdown. The High Power
Mode has both the first and second PA stages biased on
and is achieved by setting both Vctrl1 and Vctrl2 to +3
volts. The Low Power Mode has the first PA stage on
and the second PA stage off and is achieved by setting
Vctrl1 to +3 volts and Vctrl2 to 0 volts. The Shutdown
Mode is achieved by setting both Vctrl1 and Vctrl2 to 0
volts.

Handling Procedures
Please observe the following precautions to avoid
damage to the AM52-0023:

Static Sensitivity
Gallium arsenide integrated circuits are ESD
sensitive and can be damaged by static electricity.
Use proper ESD precautions when handling these
devices.

Ordering Information
Part Number Description
AM52-0023TR 7 inch, 1000 piece reel
AM52-0023TR-3000 13 inch, 3000 piece reel
AM52-0023SMB AM52-0023 Sample Test Board


Functional Schematic
1
20
PA
OUT
/
V SUP


V SUP

V CTRL2

NC

RX

SWTX
NC
TX
SWRX
ANT
V SUP

V DET

V SUP

V CTRL

VSUP
VSUP
NC
RFIN
NC
V CTRL1





Pin Configuration
Pin No. Function Description
3, 5, 9, 14 NC No Connection
4 RFIN RF Input to Amplifier
1, 2, 7, 18, 20 VSUPPLY DC Supply
6 VCTRL1 Power Control, Stage 1
8 VCTRL2 Power Control, Stage 2
10 RX Receive Port on Switch
11 SWTX Switch Control
12 ANT Switch Antenna Port
13 SWRX Switch Control
15 TX Switch Transmit Port
16 PAOUT/VSUP PA Output, DC Supply
17 VDET Detected Output Power
19 VCTL Detector Control
Base GND RF/DC Ground


AM52
-0023