CDCM6208V1F - 2:8 Ultra Low Power, Low Jitter Clock Generator, Pin Mode Variant F

The CDCM6208V1F is a highly versatile, low jitter, low-power frequency synthesizer that can generate eight low jitter clock outputs, selectable between LVPECL-like high-swing CML, normal-swing CML, LVDS-like low-power CML, HCSL, or LVCMOS, from one of two inputs that can feature a low frequency crystal or CML, LVPECL, LVDS, or LVCMOS signals for a variety of wireless infrastructure baseband, wireline data communication, computing, low power medical imaging and portable test and measurement applications. The CDCM6208V1F also features an innovative fractional divider architecture for four of its outputs that can generate any frequency with better than 1ppm frequency accuracy. The CDCM6208V1F can be easily configured through I²C or SPI programming interface and in the absence of serial interface, pin mode is also available that can set the device in 1 of 32 distinct pre-programmed configurations using control pins.

In synthesizer mode, the overall output jitter performance is less than 0.5 ps-rms (10 k – 20 MHz) or 20 ps-pp (unbound) on output using integer dividers and is between 50 to 220 ps-pp (10 k – 40 MHz) on outputs using fractional dividers depending on the prescaler output frequency.

In jitter cleaner mode, the overall output jitter is less than 2.1 ps-rms (10 k – 20 MHz) or 40 ps-pp on output using integer dividers and is less than 70 ps to 240 ps-pp on outputs using fractional dividers. The CDCM6208V1F is packaged in a small 48-pin 7 mm × 7 mm QFN package.

• Superior Performance with Low Power:
  • Low Noise Synthesizer (265 fs-rms Typical
    Jitter) or Low Noise Jitter Cleaner (1.6 ps-rms
    Typical Jitter)
  • 0.5 W Typical Power Consumption
  • High Channel-to-Channel Isolation and
    Excellent PSRR
  • Device Performance Customizable Through
    Flexible 1.8 V, 2.5 V and 3.3 V Power
    Supplies, Allowing Mixed Output Voltages
• Flexible Frequency Planning:
  • 4x Integer Down-divided Differential Clock
    Outputs Supporting LVPECL-like, CML, or
    LVDS-like Signaling
  • 4x Fractional or Integer Divided Differential
    Clock Outputs Supporting HCSL, LVDS-like
    Signaling, or Eight CMOS Outputs
  • Fractional Output Divider Achieve 0 ppm to < 1
    ppm Frequency Error and Eliminates need for
    Crystal Oscillators and Other Clock Generators
  • Output frequencies up to 800 MHz
• Two Differential Inputs, XTAL Support, Ability for
  Smart Switching
• SPI, I²C™, and Pin Programmable
• Professional user GUI for Quick Design
  Turnaround
• 7 × 7 mm 48-QFN package (RGZ)
• –40 °C to 85 °C temperature range