AWT6113
APPLICATION INFORMATION
Bias Modes
To ensure proper performance, refer to all related
Application Notes on the ANADIGICS web site:
http://www.anadigics.com
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 VMODE voltage. The Bias Control table lists the
recommended modes of operation for various
applications.
Shutdown Mode
The power amplifier may be placed in a shutdown
mode by applying logic low levels (see Operating
Ranges table) to both the VREF and VMODE voltages.
Table 6: Bias Control
P
OUT
BIAS
APPLICATION
CDMA - low power
CDMA - high power
Shutdown
LEVELS
<+16 dBm
>+16 dBm
-
MODE
Low
V
REF
V
MODE
+2.85 V +2.85 V
High
+2.85 V
0 V
0 V
0 V
Shutdown
VCC1
VCC2
C9
22uF tantalum
C1
0.01uF
C4
0.01uF
C8
22uF tantalum
1
2
3
4
5
10
V
CC
V
CC
9
8
7
6
RF IN
RFIN
GND
GND
RFOUT
GND
RF OUT
VMODE
VREF
V
V
MODE
REF
GND
GND
at slug
C2
0.01uF
Figure 27: Application Circuit Schematic
PRELIMINARY DATA SHEET - Rev 1.4
10
12/2002
ANADIGICS [ ANADIGICS, INC ]
