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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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STLC3075 Arkusz danych(PDF) 1 Page - STMicroelectronics |
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STLC3075 Arkusz danych(HTML) 1 Page - STMicroelectronics |
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1 / 36 page  March 2009 Rev 8 1/36 1 STLC3075 Integrated POTS interface for home access gateway and WLL Features ■ Monochip SLIC optimized for WLL & VoIP applications ■ Implements all Borsht function key features ■ Single supply (4.5 V to 12 V) for fly-back configuration ■ Single supply (5.5 V to 12 V) for buck-boost configuration ■ 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 ■ Automatic recognition flyback and buckboost configuration ■ BCDIIIS 90V technology ■ -40 °C to +85 °C operating range Description The STLC3075 is a SLIC device specifically designed for WLL (Wireless Local Loop), and ISDN terminal adaptors and VoIP applications. One distinctive characteristic of this device is its ability to operate with a single supply voltage (from +4.5 V to +12 V) and to 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 parallel with open drain output and 3.3 V logic levels. The metering pulses are generated on-chip starting from two logic signals (0 and 3.3 V): one signal defining the metering pulse frequency, the other signal defining the metering pulse duration. An on-chip circuit then provides the proper shaping and filtering. Metering pulse amplitude and shaping (rising and decay time) can be programmed by external components. A dedicated cancellation circuit avoids possible codec input saturation due to metering pulse echo. Constant current feed can be set from 20 mA to 40 mA. Off-hook detection threshold is programmable from 5 mA to 9 mA. The device, which is developed in BCDIIIS technology (90 V process), operates in the extended temperature range and integrates a thermal protection that sets the device in power down when Tj exceeds 140 °C. Table 1. Device summary Order code Package Packing E-STLC3075(1) 1. ECOPACK® (see Section 9) LQFP44 Tray LQFP44 www.st.com |
Podobny numer części - STLC3075_09 |
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Podobny opis - STLC3075_09 |
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