SI3232DC0-EVB Silicon Laboratories Inc, SI3232DC0-EVB Datasheet - Page 30
SI3232DC0-EVB
Manufacturer Part Number
SI3232DC0-EVB
Description
DAUGHTER CARD W/SI3200 INTERFACE
Manufacturer
Silicon Laboratories Inc
Series
ProSLIC®r
Datasheet
1.SI3232-FQ.pdf
(128 pages)
Specifications of SI3232DC0-EVB
Main Purpose
Interface, Analog Front End (AFE)
Utilized Ic / Part
Si3232
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Secondary Attributes
-
Embedded
-
Primary Attributes
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Si3232
When generating a high-voltage ringing amplitude using the Si3220, the power dissipated during the OHT state
typically increases due to operating from the ringing battery supply in this mode. To reduce power, the Si3232/
Si3200 chipset provides the ability to accommodate up to three separate battery supplies by implementing a
secondary battery switch using a few low-cost external components as illustrated in Figure 13. The Si3232’s
BATSEL pin is used to switch between the V
internal to the Si3200. The Si3232’s GPO pin is used along with the external transistor circuit to switch the V
rail (the ringing voltage battery rail) onto the Si3200’s VBAT pin when ringing is enabled. The GPO signal is driven
automatically by the ringing cadence provided that the RRAIL bit of the RLYCON register is set to 1 (signifying that
a third battery rail is present).
30
806 kΩ
Figure 12. External Battery Switching Using the Si3232 and Si3200
SVBAT
V
BLO
V
BHI
Sensing
Battery
Circuit
VBATH
VBATL
VBAT
Si3232
BHI
Preliminary Rev. 0.96
(typically –48 V) and V
Si3200
Control
Battery
Logic
Linefeed
Circuitry
BLO
BATSEL
(typically –24 V) rails using the switch
Battery
Control
Select
BATSEL
40.2 kΩ
BRING
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