AWT6631
HELP3DCTM
voltage source. The PA is turn on/off is controlled
by VEN pin. A single VMODE control logic (VMODE1) is
needed to operate this device. AWT6631 requires
only two calibration sweeps for system calibration,
thus saving calibration time.
The AWT6631 power amplifier module is based on
ANADIGICS proprietary HELP3DC™ technology.
The PAis designed to operate up to 17 dBm in the low
power mode, thus eliminating the need for three gain
states, while still maintaining low quiescent current
and high efficiency in low and medium power levels.
Average weighted efficiency can be increased by
using an external switch mode power supply (SMPS)
or DC/DC converter to reduce VCC.
Figure 5 shows one application example on mobile
board. C1 and C2 are RF bypass caps and should
be placed nearby pin 1 and pin 10. Bypass caps
C4 and C5 may not be needed. Also a “T” matching
topology is recommended at PA RFIN and RFOUT
ports to provide matching between input TX Filter and
Duplexer / Isolator.
The directional “daisy chainable” coupler is integrated
within the PA module, therefore there is no need for
external couplers.
The AWT6631 has an integrated voltage regulator,
which eliminates the need for an external constant
SMPS
VBATT
C6
C1
C2
C3
GND
at slug
GND
GND
GND
GND
RFOUT
VCC
RFOUT
VBATT
RFIN
RFIN
TX filter
Duplexer
Input
Matching
Output
Matching
VMODE2
CPLIN
50Ω
VMODE1
VEN
GND
CPLOUT
C5
GND
GND
BB
To
Detector
PA_R0
PA_0N
C4
GND
Figure 12: Typical Application Circuit
Data Sheet - Rev 2.7
03/2012
15
ANADIGICS [ ANADIGICS, INC ]
