SI3232-FQ Silicon Laboratories Inc, SI3232-FQ Datasheet - Page 20
SI3232-FQ
Manufacturer Part Number
SI3232-FQ
Description
IC SLIC PROG DUAL-CH 64TQFP
Manufacturer
Silicon Laboratories Inc
Datasheet
1.SI3232-FQ.pdf
(128 pages)
Specifications of SI3232-FQ
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
Package / Case
*
Product
Telecom
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SI3232-FQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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Si3232
4.3. DC Feed Characteristics
The Si3232 offers programmable constant voltage and
constant current operating regions as illustrated in
Figure 7 and Figure 8. The constant voltage region is
defined by the open-circuit voltage, V
programmable from 0 to 63.3 V in 1 V steps. The
constant current region is defined by the loop current
limit, I
0.87 mA steps. The Si3232 exhibits a characteristic dc
impedance of 320 Ω during Active mode.
20
LIM
, and is programmable from 18 to 45 mA in
TIP or
RING
C
Figure 6. Simplified Linefeed Architecture for TIP and RING Leads
AC
(Diagram illustrates either TIP or RING lead of a single channel)
Control
Audio
V
V
BATL
BATH
Metering
V
Control
R
Pulse
Audio
BAT
Loop
DC
A/D
D/A
OC
, and is
Preliminary Rev. 0.96
DSP
Current
Mirror
Σ
The TIP-RING voltage, V
programmable voltage, V
voltage headroom to the most positive terminal
(typically the TIP lead in normal polarity or the RING
lead in reverse polarity) for carrying audio signals. A
similar programmable voltage, V
offset between the most negative terminal and the
battery supply rail for carrying audio signals. (See
Figure 7.) The user-supplied battery voltage must have
sufficient amplitude under all operating states to ensure
sufficient headroom. The Si3200 may be powered by a
lower secondary battery supply, V
power dissipation when driving short loop lengths.
Control
Si3200
Monitor A/D
SLIC DAC
Loop
SLIC
Control
Battery
Select
A/D
D/A
Control
SLIC
OC
CM
, is offset from ground by a
V
, to provide sufficient
R
BAT
BAT
Si3232
OV
Sense
BATL
, is provided as an
, to reduce total
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