SI3232-BQ Silicon Laboratories Inc, SI3232-BQ Datasheet - Page 30

• Manufacturer Part Number: SI3232-BQ
• Description: IC SLIC PROG DUAL-CH 64TQFP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3232-BQ

• Package / Case: *
• Function: Subscriber Line Interface Concept (SLIC)
• Interface: ISDN
• Number Of Circuits: 2
• Voltage - Supply: 3.13 V ~ 3.47 V
• Current - Supply: 28mA
• Power (watts): 280mW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Product: SLIC
• Supply Voltage (min): 3.13 V
• Supply Current: 28 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Channels: 2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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
accommodate up to three separate battery supplies by
implementing a secondary battery switch using a few
low-cost
Figure 13. The Si3232’s BATSEL pin is used to switch
30
external
806 kΩ
chipset
Figure 12. External Battery Switching Using the Si3232 and Si3200
SVBAT
components
V
BLO
provides
V
BHI
Sensing
Battery
Circuit
as
the
VBATH
VBATL
VBAT
illustrated
Si3232
ability
Preliminary Rev. 0.95
Si3200
Control
Battery
to
in
Logic
Linefeed
Circuitry
between the V
24 V) rails using the switch internal to the Si3200. The
Si3232’s GPO pin is used along with the external
transistor circuit to switch the V
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).
BATSEL
BHI
(typically –48 V) and V
Battery
Control
Select
BATSEL
40.2 kΩ
BRING
rail (the ringing
BLO
(typically –