8N4QV01EG-1073CDI

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• Programmable Timers and Oscillators

  Programmable Timers and Oscillators are essential components that ensures the synchronization, accuracy, and resolution needed for all kinds of precision timing applications. The 8N4QV01EG-1073CDI Programmable Timer and Oscillator is part of a general family of customizable CMOS programmable oscillators and timers that offer cost efficient, flexible and reliable solutions for medium and high volume applications in the radiofrequency (RF) market.

  Applications

  The 8N4QV01EG-1073CDI is ideal for a broad range of applications, including: clocks and timing circuits, instrumentation, personal computer systems and peripherals, multimedia platforms, wireless links and telecom applications. Additionally, the timer is used in applications within the cellular, wireless base station and optical transceiver areas, subsys- tems and medical devices.

  Features

  The 8N4QV01EG-1073CDI has a variety of features that make it an attractive choice for such applications as embedded designs, clock synchronization, and other timing and oscillator requirements. Features include:

  • Lower RMS phase jitter;
  • Low jitter and low phase noise;
  • Delay calibration for improved accuracy levels;
  • Differential output for increased SPI noise immunity;
  • Selectable output power levels;
  • Reduced current consumption;
  • 3.3V Supply Voltage;
  • Operates at temperatures between -40oC to 85oC;
  • Package sizes ranging from 5mm x 5mm to 16mm x 16mm.

  Working Principle

  The 8N4QV01EG-1073CDI uses a phase-locked loop (PLL) methodology that combines a voltage-controlled oscillator (VCO) and a phase detector. An external digital control voltage or command word is provided to the device. The phase detector then compares the external digital control voltage to the internal clock generator output. A voltage error is generated and used to modify the VCO frequency. By tracking the difference between the input control voltage and the internal clock, the 8N4QV01EG-1073CDI is able to maintain the desired frequency and phase relationships.

  The 8N4QV01EG-1073CDI uses a spread spectrum clock (SSC) technique for reducing the clock jitter in a system. The SSC technique allows for the modulation of both the frequency and the duty cycle to spread the energy of the transmitted clock over a wider frequency range. This spreads the energy of the transmitted clock over a wider range of frequencies, thus reducing the peak energy in any single frequency. The 8N4QV01EG-1073CDI also has integrated EMI control to help reduce the radiated emission levels that the clock generates.

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