CDCM6208V2G Texas instruments

CDCM6208V2G

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CDCM6208V2G

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Описание

The CDCM6208V2G 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 CDCM6208V2G also features an innovative fractional divider architecture for four of its outputs that can generate any frequency with better than 1ppm frequency accuracy. The CDCM6208V2G 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 CDCM6208V2G 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

Function	Ultra-low jitter clock generator
Number of outputs	8
Output frequency (max) (MHz)	800
Core supply voltage (V)	1.8, 2.5, 3.3
Output supply voltage (V)	1.8, 2.5, 3.3
Input type	CML, LVCMOS, LVDS, LVPECL, XTAL
Output type	CML, HCSL, HSDS, LVCMOS, LVDS
Operating temperature range (°C)	-40 to 85
Features	I2C, Pin programmable, SPI
Rating	Catalog