ALT6713 Datasheet, PDF (5/10 Pages) ANADIGICS, Inc – HELP4 UMTS700 (Bands 13 & 14) LTE Linear PAM

ALT6713
APPLICATION INFORMATION
To ensure proper performance, refer to all related
Application Notes on the ANADIGICS web site:
http://www.anadigics.com
Shutdown Mode
The power amplifier may be placed in a shutdown mode
by applying logic low levels (see Operating Ranges
table) to the VEN, VMODE1 and VMODE2 voltages.
Bias Modes
The power amplifier may be placed in either Low,
Medium or High Bias modes by applying the
appropriate logic level (see Operating Ranges table)
to the VMODE pins. The Bias Control table below lists
the recommended modes of operation for various
applications.
Three operating modes are recommended to optimize
current consumption. High Bias/High Power operating
mode is for POUT levels > 16 dBm. At ~16 dBm - 6 dBm,
the PA could be switched to Medium Power Mode. For
POUT levels < ~6 dBm, the PA could be switched to Low
Power Mode for extremely low current consumption.
Vcontrols
Venable/Vmode(s)
On Sequence Start
T_0N =0µ
ON Sequence
Rise/Fall Max 1µS
Defined at 10% to 90%
of Min/Max Voltage
Off Sequence Start
T_0FF= 0µ
OFF Sequence
RFIN
notes 1,2
VEN
VCC
note 1
T_0N+1µS
T_0N+3 µS
T_0FF+2µS T_0FF+3µS
Referenced After 90% of Rise
Time
Referenced Before10% of Fall
Time
Notes:
Figure 3: Minimum Recommended ON/OFF Timing Sequence
(1) Level may be changed after RF is ON.
(2) RF OFF defined as Pin ≤ -30 dBm.
(3) Simultaneous switching of VMODE and VEN is not recommended
Table 5: Bias Control
APPLICATION
POUT
LEVELS
BIAS
MODE
VEN
VMODE1
VMODE2
VCC
Low power
(Low Bias Mode)
< +6 dBm
Low +1.8 V +1.8 V +1.8 V 3.2 - 4.35 V
Med power
> 6 dBm
(Medium Bias Mode) < +16 dBm
Low
+1.8 V +1.8 V
0 V 3.2 - 4.35 V
High power
(High Bias Mode)
> +16 dBm High +1.8 V 0 V
0 V 3.2 - 4.35 V
Shutdown
-
Shutdown 0 V
0V
0 V 3.2 - 4.35 V
5
Data Sheet - Rev 2.7
02/2012
VBATT
> 3.2 V
> 3.2 V
> 3.2 V
> 3.2 V