PSB4595 Просмотр технического описания (PDF) - Siemens AG

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PSB4595

Analog Line Interface Solution ALIS

Siemens AG 

PSB 4595 / PSB 4596

Analog Line Interface Solution

Configuration Overview

5

Configuration Overview

5.1 Connection to the Telephone Line

VDDA

SENS

VDD

T2

T2G

TIP-AC

TIP

T1

T1G

TIP

RING

RING-AC

RING

VREF

GNDA

CAP1

CAP2

Figure 12 Connection of ALIS-A to the Telephone Line

As shown in the figure, ALIS-A requires a minimum of components to complete the DAA:

- Protection circuit: not shown.

- Bridge: using Schottky diodes will improve the performance at low feeding conditions.

Recommended: Dual Schottky diode SIEMENS BAT 240A.

- Resistors for current sensing.

- Capacitors for AC coupling and VDD buffering.

Semiconductor Group

25

Data Sheet 06.98

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