ATR0635 Datasheet, PDF (23/33 Pages) ATMEL Corporation – ANTARIS4 Single-chip GPS Receiver SuperSense

ATR0635
Figure 4-3. Connecting Example: Separate Power Supplies for RF and Digital Part Using 1.8V from Host System
ATR0635 internal
2.7V to 3.3V
VCC1
VCC2
VBP
VDIG
LDO_IN
LDO_EN
LDO_OUT
RF
ldoin
ldoen
ldoout
LDO18
1.65V to 1.95V
VDD18
Core
2.3V to 3.6V
1.5V to 3.6V
1 µF
(X7R)
VDDIO
LDOBAT_IN
VBAT
1 µF
(X7R)
VBAT18
1.8V to 3.3V
variable I/O domain
ldobat_in
vbat
vbat18
LDOBAT
VDD
RTC
backup memory
0V or 3V to 3.6V
VDDUSB
USB SM and
transceiver
23
4928C–GPS–06/06