CDCI6214RGER

The CDCI6214 device is an ultra-low power clock generator. The device selects between two independent reference inputs to a phase-locked loop and generates up to four different frequencies on configurable differential output channels and also a copy of the reference clock on a LVCMOS output channel.

Each of the four output channels has a configurable integer divider. Together with the output muxes, this allows up to five different frequencies. Clock distribution dividers are reset in a deterministic way for clean clock gating and glitch-less update capability. Flexible power-down options allow to optimize the device for lowest power consumption in active and standby operation. Typically four 156.25-MHz LVDS outputs consume 150 mW at 1.8 V. Typical RMS jitter of 386 fs for 100-MHz HCSL output enhances system margin for PCIe applications.

The CDCI6214 is configured using internal registers that are accessed by an I²C-compatible serial interface and internal EEPROM.

The CDCI6214 enables high-performance clock trees from a single reference at ultra-low power with a small footprint. The factory- and user-programmable EEPROM make the CDCI6214 ideal as easy-to-use, instant-on clocking solution with low power consumption.

Key Features

• One Configurable High Performance, Low-Power PLL With 4 Programmable Outputs
• RMS Jitter Performance
  • Supports PCIe Gen1/ Gen2 / Gen3 / Gen4 without SSC
• Typical Power Consumption: 150 mW at 1.8 V⁽²⁾
• Universal Clock Input
  • Differential AC-Coupled or LVCMOS: 1 MHz to 250 MHz
  • Crystal: 8 MHz to 50 MHz
• Flexible Output Frequencies
  • 44.1 kHz to 350 MHz
  • Glitchless Output Divider Switching
• Four Individually Configurable Outputs
  • LVCMOS, LVDS or HCSL
  • Differential AC-Coupled With Programmable Swing (LVDS-, CML-, LVPECL-Compatible)
• Fully Integrated PLL, Configurable Loop Bandwidth: 100 kHz to 3 MHz
• Single or Mixed Supply Operation for Level Translation: 1.8 V, 2.5 V and 3.3 V
• Configurable GPIOs
  • Status Signals
  • Up to 4 Individual Output Enables
  • Output Divider Synchronization
• Flexible Configuration Options
  • I²C-Compatible Interface: Up to 400 kHz
  • Integrated EEPROM With Two Pages and External Select Pin
• Only Supports 100 Ω Systems
• Industrial Temperature Range: –40ºC to 85ºC
• Small Footprint: 24-Pin VQFN (4 mm × 4 mm)