●The CDCL1810 is a high-performance clock distributor. The programmable dividers, P0 and P1, give a high flexibility to the ratio of the output frequency to the input frequency: FOUT = FIN/P, where: P (P0,P1) = 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80.
●The CDCL1810 supports one differential LVDS clock input and a total of 10 differential CML outputs. The CML outputs are compatible with LVDS receivers if they are ac-coupled.
●With careful observation of the input voltage swing and common-mode voltage limits, the CDCL1810 can support a single-ended clock input as outlined in _Pin Configuration and Functions_.
●All device settings are programmable through the SDA/SCL, serial two-wire interface. The serial interface is 1.8V tolerant only.
●The phase of one output group relative to the other can be adjusted through the SDA/SCL interface. For post-divide ratios (P0, P1) that are multiples of 5, the total number of phase adjustment steps (η) equals the divide-ratio divided by 5. For post-divide ratios (P0, P1) that are not multiples of 5, the total number of steps (η) is the same as the post-divide ratio. The phase adjustment step (ΔΦ) in time units is given as: ΔΦ = 1/(n × FOUT), where FOUT is the respective output frequency.
●The device operates in a 1.8-V supply environment and is characterized for operation from –40°C to +85°C. The CDCL1810 is available in a 48-pin VQFN (RGZ) package.
● Single 1.8-V Supply
● High-Performance Clock Distributor with
●10 Outputs
● Low Input-to-Output Additive Jitter:
●as Low as 10fs RMS
● Output Group Phase Adjustment
● Low-Voltage Differential Signaling (LVDS)
●Input, 100-Ω Differential On-Chip
●Termination, up to 650 MHz Frequency
● Differential Current Mode Logic (CML)
●Outputs, 50-Ω Single-Ended On-Chip
●Termination, up to 650 MHz Frequency
● Two Groups of Five Outputs Each with
●Independent Frequency Division Ratios
● Output Frequency Derived with Divide
●Ratios of 1, 2, 4, 5, 8, 10, 16, 20,
●32, 40, and 80
● Meets ANSI TIA/EIA-644-A-2001 LVDS
●Standard Requirements
● Power Consumption: 410 mW Typical
● Output Enable Control for Each Output
●and Automatic Output Synchronization
● SDA/SCL Device Management Interface
● 48-pin VQFN (RGZ) Package
● Industrial Temperature Range:
●–40°C to +85°C
