CDC340DWR

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The CDC340DWR is a comprehensive Clock/Timing product manufactured by Texas Instruments. It offers robust options for clock distribution and synchronizing – specifically, clock buffering, driver functionality and timing synchronization. As a result, it is a key component for any clock/timing system that requires accurate and dependable signal distribution.

The CDC340DWR is ideal for applications such as back-plane clock distribution, bus-level signal distributions, system clock synchronization, clock buffering and synchronization signal conditioning. This device uses a wide-range of 1.0V- 3.3V process voltages and 1.4V to 3.4V VDD and VDDQ voltage levels. The CDC340DWR families are rated for temperatures between -20C° to +85°C, with pinout and drop-in compatibility.

The CDC340DWR features typical performance characteristics such as data rate up to 6Gbps, propagation delay of less than 2.5ns, and jitter less than 1ps. It also feature selectable input skews, full-speed operation up to 140MHz, and adjustable differential levels. In addition, it has a wide range of buffering capabilities, and the outputs can adjust between the input frequency and multiples of the input frequency.

To examine the working principle of the CDC340DWR, it is essential to first understand the concept of clock generation and buffering as it applies to our product. The basic idea of this device is to take a single-ended input clock signal, duplicate it and send multiple copies of the signal through fan-out buffers. A fan-out buffer is a type of logic circuitry which divides a single signal into two or more signals that are logically equivalent to the input. The CDC340DWR can take any single-ended input clock signal, synchronize it with its built-in clock generator and internally duplicate it into two or more clock outputs.

The CDC340DWR’s clock generator is used to reduce jitter and skew between the outputs. The clock generator has an internal reference clock that is used to synchronize the multiple output clocks to a single frequency and phase. In other words, the device will take an existing clock signal, synchronize it to a single frequency and phase, and then duplicate it into multiple output clocks. This ensures that all of the output signals are properly synchronized to each other.

In addition, this device has the capability to output multiple signals at the same frequency; its fan-out buffers can drive up to eight outputs at the same frequency as the input clock signal. This ensures that the multiple output signals are always properly synchronized to each other. The CDC340DWR also has the ability to adjust the frequency of its outputs to be multiples of the input frequency. This is done by “locking” the fan-out buffers to the main clock signal and multiplying the signal frequency with a “multiplier”. This multiplier can be set to any frequency multiple or divide the input frequency by.

The CDC340DWR also includes on-chip termination resistors to reduce signal reflections, which can improve signal integrity and reduce power consumption. The device also has an Integrated Power-On Reset (IPOR) circuit, which can help reduce system start-up time and improve power-up performance. Finally, the CDC340DWR also comes with a dedicated event detection circuit, which can detect asynchronous events and various combinations of events, allowing speed up or slow down clocks to adapt to system changes.

In conclusion, the CDC340DWR is a highly sophisticated clock/timing device designed specifically for clock distribution, buffering, synchronization and signal conditioning applications. Its advanced features and capabilities make it an ideal choice for applications demanding accurate, fast clock/timing signal distribution.

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