AWT6221R
APPLICATION INFORMATION
To ensure proper performance, refer to all related
Application Notes on the ANADIGICS web site:
http://www.anadigics.com
Shutdown Mode
The power amplifier may be placed in a shutdown
mode by applying logic low levels (see Operating
Ranges table) to the V
ENABLE
and V
MODE1
voltages.
Bias Modes
The power amplifier may be placed in either a Low Bias
mode or a High Bias mode by applying the appropriate
logic level (see Operating Ranges table) to V
MODE1
.
The Bias Control table lists the recommended modes
of operation for various applications. V
MODE2
is not
necessary for this PA.
Two operating modes are available to optimize
current consumption. High Bias/High Power operating
mode is for P
OUT
levels > 16 dBm. At around 16 dBm
output power, the PA should be “Mode Switched” to
Medium/Low power mode for lowest quiescent current
consumption.
Table 6: Bias Control
APPLICATION
UMTS - low power
UMTS - high power
Optional lower V
CC
in
low power mode
Shutdown
P
OUT
LEVELS
<
+16 dBm
> +16 dBm
<
+7 dBm
-
BIAS
MODE
Low
High
Low
Shutdown
V
ENABLE
+2.4 V
+2.4 V
+2.4 V
0V
V
MODE1
+2.4 V
0V
+2.4 V
0V
V
CC
3.2 - 4.2 V
3.2 - 4.2 V
1.5 V
3.2 - 4.2 V
V
BATT
>
3.2 V
>
3.2 V
>
3.2 V
>
3.2 V
Figure 3: Application Circuit
6
Data Sheet - Rev 2.3
11/2008
ANADIGICS [ ANADIGICS, INC ]
