AWT6111 Datasheet, PDF (1/4 Pages) ANADIGICS, Inc – CDMA/AMPS Power Amplifier

AWT6111
CDMA/AMPS Power Amplifier
Application Note - Rev 0
General Description
The AWT6111 is a hetero-junction bipolar transistor
(HBT) amplifier designed for the CDMA cellular
handset. The frequency band of operation is
824-849 MHz. The AWT6111 is designed to operate
from a single lithium-ion (Li-ion) battery. The amplifier
input and output are matched to provide optimum
performance in a 50 Ω system. Minimal external
components are required for proper RF bypassing.
The tantalum capacitors, C8 and C9, are not required.
Landings should be made available on the printed
circuit board (PCB) as a precaution.
Table 1: AWT6111 Module Pin Description
PIN NAME DESCRIPTION
NOTES
1
VCC1 Bias supply to 1st stage collector 3.0 - 4.2 V
2
RFIN
RF Input
Use 50 Ω transmission line
3
VREF
Reference supply to base bias
2.75 - 3.1 V
4
VMODE Mode select
0 V for high power mode,
2.7 V for low power mode
5
VCC2 Bias supply to 2nd stage collector 3.0 - 4.2 V
6
RFOUT RF Output
Use 50 Ω transmission line
7
GND Supply ground
DC ground
Figure 1: Application Schematic
04/2002