slic-Subscriber Line Interface Circuit Enhanced Power Management

Product Description

1 General Description The High Voltage Subscriber Line Interface Circuit SLIC-P (PEB ***6) is a reliable interface between the telephone line and the codec devices of the DuSLIC® or VINETIC® chip sets. It is fabricated using Infineon Technologies´ well-proven Smart Power Technology SPT **0. Due to the integrated triple battery switch, the PEB ***6 enables highly flexible solutions, ***** • 2 battery voltages (VBATH, VBATL) for power saving DC line feed and the third one (VBATR) for internal ring signal generation. With VBATR = –**0 V, the amplitude of a balanced ringing signal may reach *5 Vrms. Besides, unbalanced ringing up to *0 Vrms can be chosen on either TIP (ROT) or RING (ROR). • When using an external ring generator, the three battery voltages allow further reduction of power dissipation due to a still better adaptation of battery voltage to loop length. The PEB ***6 is designed for a voltage-feeding/current-sensing line interface concept and senses the transversal and longitudinal line current. To minimize system power dissipation, a power-down mode can be used; the PEB ***6 is switched off and the line outputs go to a high-impedance mode. Off-hook supervision is provided by activating a simple line current sensor with negligible power consumption. The PEB ***6 is compatible with both 3.3 V and 5 V VDD supplies.