PEB 4364 T V1.2 Infineon Technologies, PEB 4364 T V1.2 Datasheet - Page 92

• 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

3.7.2.2
In all active modes, the total power dissipation usually is dominated by the line current
part
For any line with total resistance
V
V
V
Ideally, the supply voltage would be optimized individually for any line. This, however, is
only possible at the expense of high effort, as it would require an highly efficient DC/DC
converter per line. On the other hand, a single fixed VBAT is determined by the longest
loop (largest
lines.
A very efficient way to reduce short-loop power dissipation now is to use a second, lower
battery supply voltage (
supported on all SLICs by the integration of a battery switch (SLIC-P even allows the use
of 3 battery voltages). The efficiency is demonstrated in
total active power dissipation values for a 20 mA line current as a function of loop
resistance for single -48 V (dotted) and double -48/-24 V (solid) battery voltages, resp..
Figure 38
Preliminary Data Sheet
BATx
AC,pk
Drop
P
>
O
(eq. 2); the quiescent power typically is below 150 mW.
I
P [mW]
TR,DC
1200
1000
800
600
400
200
Active Modes
0
peak value of AC signal
sum of voltage drops in SLIC output stage (typ. 2 V @ 20 mA)
R
0
*
Typical SLIC Power Dissipation
Loop
R
Loop
) to be served, and from eq. [2] would lead to very high power at short
+
V
V
AC,pk
BATL
500
) whenever line resistance is small enough. This method is
+
V
R
Drop
Loop
, the battery supply
1000
92
1500
V
Figure 38
BATx
Operational Description
has to fulfill the condition
2000 R
comparing typical
SLIC_power_diss
DS3, 2003-07-11
LOOP
DuSLIC
[Ω]