AWU6608
APPLICATION INFORMATION
Toꢀ ensureꢀ properꢀ performance,ꢀ referꢀ toꢀ allꢀ relatedꢀ logicꢀlevelꢀ(seeꢀOperatingꢀRangesꢀtable)ꢀtoꢀVMODE1
.
Applicationꢀ Notesꢀ onꢀ theꢀANADIGICSꢀ webꢀ site:ꢀ TheꢀBiasꢀControlꢀtableꢀlistsꢀtheꢀrecommendedꢀmodesꢀ
http://www.anadigics.com
ofꢀoperationꢀforꢀvariousꢀapplications.ꢀVMODE2ꢀisꢀnotꢀ
necessaryꢀforꢀthisꢀPA.
Shutdown Mode
Theꢀpowerꢀamplifierꢀmayꢀbeꢀplacedꢀinꢀaꢀshutdownꢀ Twoꢀoperatingꢀmodesꢀareꢀavailableꢀtoꢀoptimizeꢀcurrentꢀ
modeꢀ byꢀ applyingꢀ logicꢀ lowꢀ levelsꢀ (seeꢀ Operatingꢀ consumption.ꢀHighꢀBias/HighꢀPowerꢀoperatingꢀmodeꢀ
Rangesꢀtable)ꢀtoꢀtheꢀVENABLE and VMODE1ꢀvoltages.
isꢀforꢀPOUTꢀlevelsꢀ>ꢀ16ꢀdBm.ꢀAtꢀaroundꢀ17ꢀdBmꢀoutputꢀ
power,ꢀtheꢀPAꢀcanꢀbeꢀ“ModeꢀSwitched”ꢀtoꢀMedium/
Lowꢀ powerꢀ modeꢀ forꢀ lowestꢀ quiescentꢀ currentꢀ
consumption.
Bias Modes
TheꢀpowerꢀamplifierꢀmayꢀbeꢀplacedꢀinꢀeitherꢀaꢀLowꢀBiasꢀ
modeꢀorꢀaꢀHighꢀBiasꢀmodeꢀbyꢀapplyingꢀtheꢀappropriateꢀ
Table 5: Bias Control (UMTS)
P
OUT
APPLICATION
BIAS MODE
Low
V
ENABLE
V
MODE1
V
CC
V
BATT
LEVELS
UMTSꢀ-ꢀmed/lowꢀpower
(LowꢀBiasꢀMode)
< +17 dBm
+2.4 V
+2.4 V
+2.4 V
0 V
3.2 - 4.2 V
3.2 - 4.2 V
> 3.2 V
> 3.2 V
UMTSꢀ-ꢀhighꢀpower
(HighꢀBiasꢀMode)
>ꢀ+16ꢀdBm
High
OptionalꢀlowerꢀVCCꢀinꢀlow
powerꢀmode
< +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
PRELIMINARY DATA SHEET - Rev 1.1
5
08/2009
ANADIGICS [ ANADIGICS, INC ]
