Description
The Si3050+Si3011/18/19 Voice DAA chipset provides a highly-programmable and globally-compliant foreign exchange office (FXO) analog interface. The solution implements Silicon Laboratories patented isolation capacitor technology, which eliminates the need for costly isolation transformers, relays, or opto-isolators, while providing superior surge immunity for robust field performance. The Voice DAA is available as a chipset, a system-side device (Si3050) paired with a line-side device (Si3011/18/19). The Si3050 is available in a 20-pin TSSOP or a 24-pin QFN. The Si3011/18/19 is available in a 16-pin TSSOP, a 16-pin SOIC, or a 20-pin QFN and requires minimal external components. The Si3050 interfaces directly to standard telephony PCM interfaces.
   
Features
■ PCM highway data interface
■ µ-law/A-law companding
■ SPI control interface
■ GCI interface
■ 80 dB dynamic range TX/RX
■ Line voltage monitor
■ Loop current monitor
■ +6 dBm or +3.2 dBm TX/RX level
    mode
■ Parallel handset detection
■ 3 µA on-hook line monitor current
■ Overload detection
■ Programmable line interface
    ● AC termination
    ● DC termination
    ● Ring detect threshold
    ● Ringer impedance
■ TIP/RING polarity detection
■ Integrated codec and 2- to 4-wire
    analog hybrid
■ Programmable digital hybrid for
    near-end echo reduction
■ Polarity reversal detection
■ Programmable digital gain in 0.1 dB
    increments
■ Integrated ring detector
■ Type I and II caller ID support
■ Pulse dialing support
■ 3.3 V power supply
■ Daisy-chaining for up to 16 devices
■ Greater than 5000 V isolation
■ Patented isolation technology
■ Ground start and loop start support
■ Available in Pb-free RoHS-compliant
    packages
   
Applications
■ DSL IADs
■ VoIP gateways
■ PBX and IP-PBX systems
■ Voice mail systems
■ DECT base stations