Description

The STLC3055N is a SLIC device specifically designed for wireless local loop (WLL) and ISDN terminal adaptors (ISDN-TA) and VoIP applications. One of the distinctive characteristic of this device is the ability to operate with a single supply voltage (from 5.5 V to 12 V) and self generate the negative battery by means of an on chip DC/DC converter controller that drives an external MOS switch.

The battery level is properly adjusted depending on the operating mode. A useful characteristic for these applications is the integrated ringing generator.

The control interface is a parallel type with open drain output and 3.3 V logic levels.

Features

■ Monochip subscriber line interface circuit (SLIC) optimised for WLL and VoIP applications

■ Implement all key features of the BORSHT function

■ Single supply (5.5 V to 12 V)

■ Built in DC/DC converter controller

■ Soft battery reversal with programmable transition time.

■ On-hook transmission.

■ Programmable off-hook detector threshold

■ Metering pulse generation and filter

■ Integrated ringing

■ Integrated ring trip

■ Parallel control interface (3.3 V logic level)

■ Programmable constant current feed

■ Surface mount package

■ Integrated thermal protection

■ Dual gain value option

■ BCD III S, 90 V technology

■ -40 to +85 °C operating range