CY7B994V-2BBC

CY7B994V-2BBC is a high-performance clock generator & frequency synthesizer designed by Cypress Semiconductor Corporation. It can be used to generate high-frequency outputs, reduce jitter and enhance system stability. This device integrates two frequency synthesizer channels and two multipliers together, providing ideal solutions for applications requiring high performance and superior jitter performance. The two frequency synthesizers have complete clock output settings and are able to output more than 30 different locations.

CY7B994V-2BBC Application Field

CY7B994V-2BBC is widely used in communication networks, base stations, ISPs, enterprise networks and industrial automation. In these different fields, the device can be used as a clock mux, supporting several output frequencies, low reference frequency range from 1MHz to 13.5MHz, as well as high reference frequency range from 6MHz to 75MHz, both of which will be applied for the VCOs in the PLL, providing excellent frequency and jitter performance. CY7B994V-2BBC also offers the flexibility and convenience of adjustable output frequency and dual-PLL support.

CY7B994V-2BBC Working Principle

CY7B994V-2BBC consists of two frequency synthesizers, both of which have identical structure and configurations. Each frequency synthesizer consists of several components, including a divide-by-10 frequency divider, a dual-modulus prescaler, a phase-frequency detector, a clock mux, and a voltage-controlled oscillator (VCO).

The dual-modulus prescaler divides the input reference clock signal into two signals, with different modulation values and frequencies. The output of the prescaler will then be compared with the output of the VCO, and the difference between the two will be sent to the phase-frequency detector. Based on the comparison results of the phase-frequency detector, a control signal will be sent to the VCO, thus correcting the output frequency of the VCO according to the reference signal.

The clock mux will receive several input clocks and select one of them, which can be used as the output signal for the frequency synthesizer. The clock mux is also adjustable, which means it can be programmed to output multiple frequencies. Once the modulation signal is inputted, the frequency synthesizer will generate precise output frequency.

Conclusion

CY7B994V-2BBC is a high-performance clock generator and frequency synthesizer designed by Cypress Semiconductor. It offers excellent jitter performance, adjustable output frequency and dual-PLL support, making it suitable for various applications such as communication networks, base stations, ISPs, enterprise networks and industrial automation. The working principle of CY7B994V-2BBC is based on two frequency synthesizers, a phase-frequency detector and a voltage-controlled oscillator (VCO), which can provide precise output frequency by modifying the control signal according to the reference input frequency.