STLC3080 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STLC3080

SUBSCRIBER LINE INTERFACE CIRCUIT

STMicroelectronics 

Figure B2. Rfeed allowed values vs. Ilim (Vbat = -54V).

STLC3080

Figure B3. Rfeed allowed values vs. Ilim (Vbat = -60V).

EXAMPLE:

Considering the following parameters:

Vbat = -48V, max Tamb = 70°C, Ilim = 25mA,

Qext able to dissipate 1W, the possible values of

Rfeed can be found in fig. 1 and are limited by the

b2 curve (upper limit) and the a1 curve (lower

limit).

In particular considering the Ilim = 25mA the

Rfeed allowed range will be:

500Ω < Rfeed < 1700Ω

17/23

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