CY7B9930V-5AXC

Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

The CY7B9930V-5AXC is a high-performance PLL-based clock generator designed for the Clock/Timing application field.

The device achieves ultra-low jitter performance and offers multiple output frequencies across a wide range of frequencies. The CY7B9930V-5AXC includes four SMA output ports that generate a wide range of clock output frequencies. The device also includes four CMOS input ports with input frequency range up to 9 MHz. This device offers flexibility and can meets various frequency synthesis challenges.

This device is ideally suited for applications including digital communications systems, high speed data acquisition and processing, digital signal processing, audio/video applications, and test instrumentation. The device has a shutdown feature for applications like network routers and other power-sensitive applications.

Working Principle

The CY7B9930V-5AXC contains a Phase-Locked Loop (PLL) that is used to generate the clock or data signals that are used to synchronize the different components in the system. As the frequency of the input clock or data signal changes, the PLL is able to fine-tune a frequency independently from the input frequency.

The PLL works by comparing the phase of the input signal to the phase of the generated frequency. When the input and generated frequencies are the same, the PLL is said to be locked. In this mode, the loop is able to generate a stable clock frequency that is independent of the input signal.

The PLL also contains a digital-controlled oscillator (DCO) that is used to finely tune the generated frequency. The output frequency is controlled by the duty cycle of the DCO, which is set by a 3-bit programmable divider that is used to divide the input frequency by an integer number. The duty cycle can be set to any value between 0 and 1 to generate the desired output frequency.

The CY7B9930V-5AXC also includes a temperature compensated crystal oscillator (TCXO) for improved and consistent performance. The TCXO is used to maintain accurate clock frequencies over a wide temperature range and provides the device with a highly stable output frequency.

The CY7B9930V-5AXC also contains a clock control register, which is used to store the programmed divider settings. The clock control register also allows for the dynamic control of the output clock frequencies via an I2C interface. This allows the device to be dynamically programmed to output various frequencies, while still maintaining a stable clock signal.

The CY7B9930V-5AXC is an excellent solution for Clock/Timing applications that require low jitter and accurate clock frequencies across a wide range of temperatures.