AWT6134
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.
Table 6: Bias Control
APPLICATION
CDMA - low power
CDMA - high power
Shutdown
P
OUT
LE V E LS
<+16dBm
>+16 dBm
-
BIAS
MODE
Low
High
Shutdown
V
R EF
+2.8 V
+2.8 V
0V
V
MODE
+2.8 V
0V
0V
VCC1
VCC2
C1
0.01µF
1
C3
0.01µF
V
CC
RF
IN
GND
V
MODE
V
REF
V
CC
GND
RF
OUT
GND
GND
GND
at slug
10
9
8
7
6
2
3
C4
2.2µF ceramic
RF IN
RF OUT
VMODE
VREF
4
5
C2
0.01µF
Figure 3: Application Circuit Schematic
6
PRELIMINARY DATA SHEET - Rev 1.0
07/2003
ANADIGICS [ ANADIGICS, INC ]
