CDC421212RGET Integrated Circuits (ICs)

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Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

CDC421212RGET (CDC4212) is a Class 1 Frequency Synthesizer, which is designed for high performance clock requirements. This device is designed for clock and timing applications with a range of frequency settings from 1MHz to 50MHz.

Application Field

CDC4212 can be used in many different areas, depending on the frequency output. It can be usedin mobile device applications, GPS and navigation, security camera systems, seamless video playback systems, and more. It can be used in both analog and digital applications and can also be used for modulation and demodulation.

The most popular application field of this device is mobile device and GPS systems, for which it provides a high performance solution for measuring the exact time code. CDC4212 is also used in wireless LANs and other RF applications, in which it can provide reliable time-base references with precision frequency synthesizers.

Working Principle

CDC4212 uses a phase-locked loop (PLL) to generate the desired frequency output. The PLL works by using a reference signal to seek out and latch on to a desired frequency. Once the desired frequency is acquired, the PLL passes it through a low-noise signal filter, removes any noise and unwanted frequencies that may have been picked up, and then outputs the signal.

Out side of the PLL, CDC4212 also uses an analog control circuit to adjust the output frequency. This control circuit takes the input voltage and sets the output frequency range. As an example, with an input voltage of 4.9V, the output frequency range can be set from 4.7MHz to 50MHz.

It also has two voltage-controlled oscillators (VCOs). The first VCO translates the reference clock signal into a signal that can be used by the PLL, while the second VCO generates the desired frequency output. There are also two voltage-controlled amplifiers (VCAs) that provide added control to the output frequency.

In addition to the PLL and control circuit, CDC4212 also has additional features such as on-board temperature sensors, voltage regulators, and additive jitter reduction.

Conclusion

CDC4212 is a high performance frequency synthesizer designed for clock and timing applications. It uses a PLL to generate the desired frequency output and an analog control circuit to adjust the output frequency range. It also includes additional features such as on-board temperature sensors, voltage regulators, and additive jitter reduction. The device is ideal for use in mobile device and GPS systems, where it can provide a reliable time-base references with precision frequency synthesizers.

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