PEB 4364 T V1.2 Infineon Technologies, PEB 4364 T V1.2 Datasheet - Page 93

• Manufacturer Part Number: PEB 4364 T V1.2
• Description: IC SLIC VOICE ACCESS PDSO-36
• Manufacturer: Infineon Technologies
• Series: DuSLICr

Specifications of PEB 4364 T V1.2

• Function: Dual Channel Subscriber Line Interface Circuit (DuSLIC)
• Interface: IOM-2, PCM
• Number Of Circuits: 2
• Voltage - Supply: 3.3 V ~ 5 V
• Current - Supply: 105mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-PDSO
• Includes: DTMF Generator and Decoder, Line Echo Cancellation (LEC), Teletax (TTX) Generation, Universal Tone Detection (UTD)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Other names: PEB4364TV1.2XT; SP000007728

3.7.2.3
Basically the considerations above are also valid in Ringing Mode. The only difference
results from the fact, that in Ringing a large sinusoidal signal is applied to a complex RC
load (compared with DC drive of an ohmic load in active modes). Eq. [2] is still valid, but
obviously P
VTR and the resulting loop current.
If the total load impedance (loop resistance plus ringer load) is denoted as
Z
calculation of the average ring power yields
P
Here
derived from the condition
V
The crest factor is the ratio of peak and rms value (here 1.41, as sinusoidal ringing is
assumed).
V
V
V
As the resulting
transmission modes, the total supply range is increased by either using an additional
positive supply
voltage
Again, to minimize power dissipation,
however, the voltage at the ringer rather than at the TIP/RING pins is decisive. Due to
voltage division between ringer and line, the worst case for
maximum ringer load (minimum ringer impedance, e.g 5 US REN) at maximum loop
length.
The above calculation is valid for power dissipation during the ring burst. The power
values cover a broad range from typically 1 W to 3 W, mainly depending on the ringer
load. The mean ring power then can be calculated by averaging over the burst / pause
cycle. So for a typical ringing cadence (1 second on and 4 seconds off) power is given by
P
with k = 0.20
Preliminary Data Sheet
L
O
BATx
Ring,DC
Drop
Ring,pk / rms
average
= |
= (4 *
Z
V
>
L
BATx
| * e
= k *
V
V
Ring,pk
V
BATR
BATx
Ringing Mode
O
again denotes the total battery supply voltage. The minimum value can be
j
superimposed DC voltage for Ring trip detection (10 to 20 V)
sum of voltage drops in SLIC output stage (typ. 2 V @ 20 mA)
peak / effective ring voltage at Tip/Ring pins
P
now is time dependent due to the time dependence of both ringing voltage
=
(
Ring
V
+
-
R
V
BATx
Loop
V
HR
+ (1 – k) *
*
Ring,DC
V
V
(so
BATx
=
+
Ring,pk
V
R
BATR
V
Ring
+
for ringing typically is significantly larger than in active
BATx
* cos
V
+ 1 / j
Drop
P
for SLIC-P).
RingPause
=
=
V
HR
V
C
*
Ring,rms
Ring
-
V
V
V
BATx
Ring,pk
BATH
93
* crest factor +
has to be kept as low as possible. In ringing,
/ (2 *
for SLIC-S/E) or providing a third battery
* Z
L
)
V
Ring,DC
Operational Description
V
BATx
+
V
is represented by
Drop
DS3, 2003-07-11
DuSLIC