ALT1210MOD-VZ-01 User Module
Rev 1.0
Altair Semiconductor Proprietary and Confidential
14
4.1.5.
General Power Related Guidelines
For wearable or battery sensitive IOT devices it is recommended to have the ability
to completely disconnect all supplies to the module (controlled by the external
host) to eliminate any leakage when the modem is not used and therefore
optimizing battery life time.
See below a diagram of a typical application aiming to optimize battery lifetime.
ALT1210MOD-VZ-01
Module
1V8_IO_IN
VDD_RET_IN
VPA
VBAT
#61
#6
#46
#15
#99
VPA
VBAT
#16
VBAT
#70
FEM_CTRL2
#31
Host
GPIO1
1.8V For IOs and DDR
DC-DC
3.0V For RF PAs
GPIO2
En
Vout
Vin
DC-DC
En
Vout
Vin
DC-DC
En
Vout
Vin
3.2V Main supply
RETLE_N_OUT
RETLE_N_IN
FEM_CTRL0
#21
#76
#22
VO18R_OUT
#62
It requires additional supplies on application board, but allows shutting down the
modem completely when not needed, therefore reducing the power consumption
to minimum.
A simpler power supply network maybe used that only uses a single supply on the
application board, but has higher power consumption due to leakage and efficiency
losses.
See below a diagram of such system.
ALT1210MOD-VZ-01
Module
1V8_IO_IN
VDD_RET_IN
VPA
VBAT
#61
#6
#46
#15
#99
VPA
VBAT
#16
VBAT
#70
FEM_CTRL2
#31
Host
3.2-4.3V Supply
RETLE_N_OUT
RETLE_N_IN
FEM_CTRL0
LDO
En
Vout
Vin
VO18R_OUT
#62
#21
#76
#22