AWU6601
APPLICATION INFORMATION
To ensure proper performance, refer to all related logicꢀlevelꢀ(seeꢀOperatingꢀRangesꢀtable)ꢀtoꢀVMODE1
.
Application Notes on the ANADIGICS web site: The Bias Control table lists the recommended modes
http://www.anadigics.com
ofꢀoperationꢀforꢀvariousꢀapplications.ꢀVMODE2 is not
necessary for this PA.
Shutdown Mode
Theꢀpowerꢀamplifierꢀmayꢀbeꢀplacedꢀinꢀaꢀshutdownꢀ Twoꢀ operatingꢀ modesꢀ areꢀ availableꢀ toꢀ optimizeꢀ
modeꢀ byꢀ applyingꢀ logicꢀ lowꢀ levelsꢀ (seeꢀ Operatingꢀ current consumption. High Bias/High Power operating
Rangesꢀtable)ꢀtoꢀtheꢀVENABLE and VMODE1ꢀvoltages.
mode is for POUTꢀlevelsꢀ> 16 dBm. At around 17 dBm
output power, the PA should be “Mode Switched” to
Medium/Low power mode for lowest quiescent current
consumption.
Bias Modes
TheꢀpowerꢀamplifierꢀmayꢀbeꢀplacedꢀinꢀeitherꢀaꢀLowꢀBiasꢀ
mode or a High Bias mode by applying the appropriate
Table 6: Bias Control (WCDMA/UMTS)
P
OUT
APPLICATION
BIAS MODE
High
V
ENABLE
V
MODE1
V
CC
V
BATT
LEVELS
UMTS - high power
(HighꢀBiasꢀMode)
> +16 dBm
< +17 dBm
+2.4 V
+2.4 V
0 V
3.2 - 4.2 V
3.2 - 4.2 V
> 3.2 V
> 3.2 V
UMTS - med/low power
(LowꢀBiasꢀMode)
Low
+2.4 V
Optional lower VCC in low
power mode
< +7 dBm
-
Low
+2.4 V
0 V
+2.4 V
0 V
1.5 V
> 3.2 V
> 3.2 V
Shutdown
Shutdown
3.2 - 4.2 V
Table 7: Bias Control (TD-SCDMA)
P
OUT
APPLICATION
BIAS MODE
V
ENABLE
V
MODE1
V
CC
V
BATT
LEVELS
TD-SCDMA - high power
(HighꢀBiasꢀMode)
> +15 dBm
High
+2.4 V
0 V
3.2 - 4.2 V
> 3.2 V
TD-SCDMA - med/low
powerꢀ(LowꢀBiasꢀMode)
< +16 dBm
-
Low
+2.4 V
0 V
+2.4 V
0 V
3.2 - 4.2 V
3.2 - 4.2 V
> 3.2 V
> 3.2 V
Shutdown
Shutdown
Data Sheet - Rev 2.0
10/2009
6
ANADIGICS [ ANADIGICS, INC ]
