Data and Voice Modems

Our Si2439/94 ISOmodem® Data + Voice chipsets offer advanced voice processing, in addition to machine-to-machine communications capabilities, making it easy to add telephony features to any embedded system. The on-chip command processor handles all time-critical tasks and allows simple system integration. The product implements a complete PSTN modem and range in speed from 2400 – 56,000 bps and utilizes our patented direct access arrangement (DAA) technology to implement a globally-compliant telephone line interface with unparalleled integration and proven robustness. One hardware design can support all speeds and countries with a single bill of materials (BOM).

Globally Compliant
Up to V.92 Modulation
Si2439 and Si2494
Advanced DSP Voice Processing

Data and Voice Modems Common Specs

  • AT command set
  • ITU-T “V-dot” protocols up to 56 kbps
  • Error correction and data compression
  • Fast-connect protocols for POS
  • Security industry protocols, e.g. “Contact ID” and SIA
  • SMS/MMS support including China
  • DTMF generation and detection
  • General purpose tone detectors
  • Global Caller ID type 1 and type 2 decoding
  • Integrated DAA:
    • Over 6 kV surge immunity
    • On- and off- hook line voltage monitoring
    • Parallel phone (intrusion) detection
    • Over-current detection
  • Advanced voice signal processing
    • Acoustic Echo Cancellation
    • Line Echo Cancellation
    • Limiter for “Soft Clipping”
    • Programmable filtering and pre-emphasis
  • UART, SPI, or parallel host interface
  • Flexible clock options including low-cost 32.768 kHz oscillator
  • Low power; single 3.3 V supply
    • 15 mW in wake-on-ring or wake-on-polarity
    • 56 mW in normal operation
  • Firmware upgradeable
  • EEPROM interface
  • Lead-free, RoHS-compliant packages
  • Commercial or industrial temperature range
Find the Right Data and Voice Modem Device Select Columns
Select Columns
Part Number Max Data Rate (bps) Line Side Device Host Interface Handset, TAM and Speakerphone Error Correction/Data Compression Package Type
2400 Si3010 UART SOIC16
2400 Si3010 SPI; UART SOIC16; TSSOP24
14400 Si3018 SPI; UART SOIC16; TSSOP24
33600 Si3018 SPI; UART SOIC16; TSSOP24
33600 Si3018 SPI; UART QFN38
56000 Si3018 SPI; UART SOIC16; TSSOP24
56000 Si3018 SPI; UART SOIC16; TSSOP24
56000 Si3018 SPI; UART QFN38

Sort A -> Z
Sort Z -> A

Filter by values...

Contact Sales
Close
Loading Results