AWT6272 Datasheet, PDF (5/8 Pages) ANADIGICS, Inc – HELPTM Cellular/WCDMA 3.4 V/29 dBm Linear Power Amplifier Module

APPLICATION INFORMATION
AWT6272
To ensure proper performance, refer to all related logic level (see Operating Ranges table) to the VMODE
Application Notes on the ANADIGICS web site: voltage. The Bias Control table lists the recommended
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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.
Bias Modes
The power amplifier may be placed in either a Low Bias
mode or a High Bias mode by applying the appropriate
Three operating modes are recommended to optimize
current consumption. High Bias/High VCC operating
mode is for POUT levels > 16 dBm. At ~16dBm - 7 dBm,
the PA should be “Mode Switched” to Low Bias Mode.
For POUT levels < ~7 dBm, the VCC can be switched
to 1.5 V (Low Bias Mode is also used for this POUT
range).
Table 5: Bias Control
APPLICATION
POUT
LEVELS
BIAS
MODE
VREF
VMODE
WCDMA - low power
<+7 dBm
Low +2.85 V +2.85 V
WCDMA - med power 7 < POUT < +16 dBm Low +2.85 V +2.85 V
WCDMA - high power
>+16 dBm
High +2.85 V 0 V
Shutdown
-
Shutdown 0 V
0V
VCC
+1.5
+3.4
+3.4
-
VREF
10K 
(Optional)
RFIN
VMODE
VCC1
C2
0.01 F
10K 
(Optional)
VREF
VMODE
GND
RFIN
VCC1
GND
GND
RFOUT
GND
VCC2
GND
at Slug
VCC2
C4
0.01 F
C6
1 F
GND
at Slug
Figure 3: Application Schematic
C7
2.2 F
RFOUT
Data Sheet - Rev 2.1
5
11/2008