AWT6221R
APPLICATION INFORMATION
The Bias Control table lists the recommended modes
of operation for various applications. VMODE2 is not
necessary for this PA.
To ensure proper performance, refer to all related
Application Notes on the ANADIGICS web site:
http://www.anadigics.com
Two operating modes are available to optimize
current consumption. High Bias/High Power operating
mode is for POUT 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.
Shutdown Mode
The power amplifier may be placed in a shutdown
mode by applying logic low levels (see Operating
Ranges table) to the VENABLE and VMODE1 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 VMODE1.
Table 6: Bias Control
P
OUT
BIAS
MODE
APPLICATION
V
ENABLE
V
MODE1
V
CC
V
BATT
LEVELS
< +16 dBm
> +16 dBm
UMTS - low power
Low
+2.4 V +2.4 V
+2.4 V 0 V
3.2 - 4.2 V
3.2 - 4.2 V
> 3.2 V
> 3.2 V
UMTS - high power
High
Optional lower VCC in
low power mode
< +7 dBm
Low
+2.4 V +2.4 V
0 V 0 V
1.5 V
> 3.2 V
> 3.2 V
Shutdown
-
Shutdown
3.2 - 4.2 V
Figure 3: Application Circuit
Data Sheet - Rev 2.4
6
08/2010
ANADIGICS [ ANADIGICS, INC ]
