SI3232 View Datasheet(PDF) - Silicon Laboratories
Part Name
Description
Manufacturer
SI3232 Datasheet PDF : 128 Pages
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Si3232
10. Pin Descriptions: Si3200
TIP
NC
RING
VBAT
VBATH
VBATL
GND
VDD
Si3200
16-Lead SOIC
(epad)
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
ITIPP
ITIPN
THERM
IRINGP
IRINGN
NC
NC
BATSEL
Pin #(s)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol Input/ Description
Output
TIP
I/O TIP Output—Connect to the TIP lead of the subscriber loop.
NC
No Internal Connection—Do not connect to any electrical signal.
RING
I/O RING Output—Connect to the RING lead of the subscriber loop.
VBAT
Operating Battery Voltage—Si3200 internal system battery supply. Con-
nect SVBATa/b pin from Si3232 and decouple with a 0.1 µF/100 V filter
capacitor.
VBATH
High Battery Voltage—Connect to the system ringing battery supply.
Decouple with a 0.1 µF/100 V filter capacitor.
VBATL
— Low Battery Voltage—Connect to lowest system battery for off-hook oper-
ation driving short loops. An internal diode prevents leakage current when
operating from VBATH.
GND
Ground—Connect to a low-impedance ground plane.
VDD
Supply Voltage—Main power supply for all internal circuitry. Connect to a
3.3 V or 5 V supply. Decouple locally with a 0.1 µF/10 V capacitor.
BATSEL
I
Battery Voltage Select—Connect to the BATSEL pin of the Si3232 through
an external resistor to enable automatic battery switching.
NC
No Internal Connection—Do not connect to any electrical signal.
NC
No Internal Connection—Do not connect to any electrical signal.
IRINGN
I
Negative RING Current Control—Connect to the IRINGN lead of the
Si3232.
IRINGP
I
Positive RING Current Drive—Connect to the IRINGP lead of the Si3232.
THERM
O Thermal Sensor—Connection to internal temperature-sensing circuit. Con-
nect to THERM pin of Si3232.
120
Preliminary Rev. 0.96
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