Direct-Sequence Spread-Spectrum Modulator 60 Mchip/s
  • Direct Sequence Spread-Spectrum (DS-SS) modulator
    • Programmable chip rates up to 60 Mchip/s
    • Spreading factor: 3 to 65535
    • Spreading codes: Maximal length sequences, Gold codes, Barker codes, GPS C/A codes
    • GPS C/A codes
    • Symbol rate selection fully independent of chip rate
    • Code modulation: BPSK/QPSK with output spectral shaping filter: raised cosine square root filter with 20% rolloff. Filter can be bypassed
    • Input for an external, higher-stability 10 MHz frequency reference.
  • Internal generation of pseudo-random bit stream and unmodulated carrier for test purposes
  • Built-in channel impairments generation:
    • additive white Gaussian noise
    • frequency offset (Doppler)
    ComScope-enabled: key internal signals can be captured in real-time and displayed on a host computer
  • Connectorized 3x 3 module for ease of prototyping. High-speed 98-pin PCIe connectors (left, right). Single 5V supply with reverse voltage and overvoltage protection. Interfaces with 3.3V LVTTL logic.
  • com1519com-1519 block diagram

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    Other Modulators
    Specifications (700 KB)
    VHDL Source Code / IP Overview
    $320 Ready-to-use Module
    $750 IP core, VHDL source, unlimited use