AWT6111
CDMA/AMPS Power Amplifier
Application Note - Rev 0
General Description
The AWT6111 is a hetero-junction bipolar transistor
(HBT) amplifier designed for the CDMA cellular
handset. The frequency band of operation is
824-849 MHz. The AWT6111 is designed to operate
from a single lithium-ion (Li-ion) battery. The amplifier
input and output are matched to provide optimum
performance in a 50
Ω
system. Minimal external
components are required for proper RF bypassing.
The tantalum capacitors, C8 and C9, are not required.
Landings should be made available on the printed
circuit board (PCB) as a precaution.
Table 1: AWT6111 Module Pin Description
PIN
1
2
3
4
5
6
7
NAME
V
CC1
RF
IN
V
REF
V
MODE
V
CC2
RF
OUT
GND
DESCRIPTION
Bias supply to 1st stage collector
RF Input
Reference supply to base bias
Mode select
Bias supply to 2nd stage collector
RF Output
Supply ground
NOTES
3.0 - 4.2 V
Use 50
Ω
transmission line
2.75 - 3.1 V
0 V for high power mode,
2.7 V for low power mode
3.0 - 4.2 V
Use 50
Ω
transmission line
DC ground
Figure 1: Application Schematic
04/2002
ANADIGICS [ ANADIGICS, INC ]
