SI3215MPPQ1-EVB Silicon Laboratories Inc, SI3215MPPQ1-EVB Datasheet - Page 31

• Manufacturer Part Number: SI3215MPPQ1-EVB
• Description: BOARD EVAL W/SI3201 INTERFACE
• Manufacturer: Silicon Laboratories Inc
• Series: ProSLIC®r

Specifications of SI3215MPPQ1-EVB

• Main Purpose: Interface, Analog Front End (AFE)
• Utilized Ic / Part: Si3215
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

terminal voltage that tracks R
|V
|V
below the VOC/I
can continue to track R
tracking mechanism is stopped when |V
(TRACK = 0). The former case is the more common
application
dissipation savings. In principle, the regulator output
voltage can go as low as |V
significant power savings.
When TRACK = 0, |V
V
to decrease with decreasing R
dissipation on the NPN bipolar transistor driving the
BATL
BAT
BAT
V
V
BATL
| voltage will also track R
| = I
. The RING terminal voltage, however, continues
LIM x
and
R
LOOP
LIM
TRACK=0
provides
mark, the regulator output voltage
+ V
LOOP
BAT
Constant I Region
CM
Figure 17. V
| will not decrease below
+V
(TRACK = 1), or the R
LOOP
BAT
OV
the
| = V
. As R
, and, as a result, the
LOOP
LOOP
maximum
CM
TIP
. In this state,
LOOP
V
+ V
, V
. The power
OV
BAT
RING
OV
decreases
| = |V
, offering
, and V
power
LOOP
BATL
Rev. 0.92
|
V
BAT
I
LIM
OC
|V
RING terminal can become large and may require a
higher power rating device. The non-tracking mode of
operation is required by specific terminal equipment,
which, in order to initiate certain data transmission
modes, goes briefly on-hook to measure the line voltage
to determine whether there is any other off-hook
terminal equipment on the same line. TRACK = 0 mode
is desired since the regulator output voltage has long
settling time constants (on the order of tens of
milliseconds) and cannot change rapidly for TRACK = 1
mode.
measurement would yield approximately the same
voltage as the off-hook line voltage and cause the
terminal equipment to incorrectly sense another off-
hook terminal.
in the Forward Active State
TIP
V
- V
CM
RING
Therefore,
|
Constant V Region
V
OV
the
brief
V
OC
on-hook
Si3215
V
V
R
V
TIP
RING
LOOP
BAT
voltage
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