AWT6277R
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 both the V
REF
and V
MODE
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 the V
MODE
voltage. The Bias Control table lists the recommended
modes of operation for various applications.
Three operating modes are recommended to optimize
current consumption. High Bias/High V
CC
operating
mode is for P
OUT
levels
>
16 dBm. At ~16dBm - 7 dBm,
the PA should be “Mode Switched” to Low Bias Mode.
For P
OUT
levels < ~7 dBm, the V
CC
can be switched
to 1.5 V (Low Bias Mode is also used for this P
OUT
range).
Table 5: Bias Control
APPLICATION
WCDMA - low power
WCDMA - med power
WCDMA - high power
Shutdown
P
OUT
LEVELS
<+7
dBm
7
<
P
OUT
<
+16 dBm
>+16 dBm
-
BIAS
MODE
Low
Low
High
Shutdown
V
REF
V
MODE
V
CC
+1.5
+3.4
+3.4
-
+2.85 V +2.85 V
+2.85 V +2.85 V
+2.85 V
0V
0V
0V
VCC1
VCC2
C1
0.01µF
RF IN
VMODE
VREF
1
2
3
4
5
V
CC
RF
IN
GND
V
MODE
V
REF
V
CC
GND
RF
OUT
GND
GND
GND
at slug
10
9
8
7
6
C3
0.01µF
C4
2.2µF ceramic
RF OUT
C2
0.01µF
Figure 3: Application Circuit Schematic
Data Sheet - Rev 2.1
11/2008
5
ANADIGICS [ ANADIGICS, INC ]
