8N3QV01KG-0099CDI

8N3QV01KG-0099CDI Programmable Timers and Oscillators

Programmable timers and oscillators are special-purpose integrated circuits designed to generate synchronous or asynchronous timing signals. Timers are often used to control various parts of an electronic system such as alarms, timing circuits and clock signals. Oscillators are usually used as sources of frequency control in radio frequency (RF) applications.

Application Field

The 8N3QV01KG-0099CDI is a high-performance PLL-based frequency synthesizer with all-digital functionality. It is designed to provide a high accuracy and low jitter frequency reference for timing and synchronization applications such as communications, general purpose digital systems and signal processing. The device is capable of providing wide-ranging synchronous frequency outputs from 10kHz to 200MHz. It can also be used as a temperature-compensated crystal oscillator (TCXO) for baseband voltage-controlled oscillator (VCO) loops.

The 8N3QV01KG-0099CDI provides great versatility in frequency programming and output drive with two selectable drive frequencies (3.3V and 5V) and various selectable logic output levels. It also features latching, lock detection, programmable holdover with low OTA rate and a versatile two-wire serial programming interface.

Working Principle

The 8N3QV01KG-0099CDI synthesizes and generates three different waveforms: LowJitter Clock Output (LJCO), Programmable Pulse Width Output (PPWO) and Programmable Pulse Width Modulation Output (PPWMO). The LJCO provides a low jitter clock signal and is used for high-accuracy timing applications. The PPWO offers an output signal with programmable pulse width, and the PPWMO is used to produce a frequency modulation signal.

The 8N3QV01KG-0099CDI uses a deliberately delayed phase-locked loop (PLL) architecture to achieve superior jitter performance and frequency accuracy. The device is equipped with an oscillator, two multiplexers, latch logic, two-stage PLL and frequency synthesis logic. The oscillator is used to provide a reference clock signal to the PLL. The multiplexers are used to select either the internal reference clock or external reference clock. The latch logic generates the control signals for PLL control, such as frequency programming and control of the voltages.

The two-stage PLL uses the control signals to generate the desired frequency. The frequency synthesis logic uses two sine wave ramps to generate the desired frequency modulation. The final output signal is generated through a combination of the oscillator\'s reference clock, the PLL\'s control signals, the multiplexers\' selection signals and the synthesized frequency modulation signal.

Conclusion

The 8N3QV01KG-0099CDI is an advanced programmable timer and oscillator with a wide range of applications. The device is designed to provide a high accuracy and low jitter frequency reference for timing and synchronization applications. It uses a deliberately delayed PLL architecture and features two multiplexers, latch logic, two-stage PLL, frequency synthesis logic and a versatile two-wire serial programming interface. The 8N3QV01KG-0099CDI is capable of generating three different waveforms: LowJitter Clock Output (LJCO), Programmable Pulse Width Output (PPWO) and Programmable Pulse Width Modulation Output (PPWMO).