مدار مجتمع (آی سی) آی‌سی واسط ارتباطی آی‌سی مخابراتی

Product Attributes

Introduction

Voice DAA chipset provides a highly-programmable and globally-compliant foreign exchange office (FXO) analog interface. The solution implements patented isolation capacitor technology, which eliminates the need for costly isolation transformers, relays, or optoisolators, 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
• 3µA on-hook line monitor current
• Overload detection
• Programmable line interface
  • AC termination
  • DC termination
  • Ring detect threshold
  • Ringer impedance

Applications

• DSL IADs
• VoIP gateways
• PBX and IP-PBX systems
• 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
• 3.3V power supply
• Daisy-chaining for up to 16 devices
• Greater than 5000V isolation
• Patented isolation technology
• Ground start and loop start support
• Available in Pb-free RoHS-compliant packages