LTC6905CS5-100#TRPBF

The LTC6905CS5-100#TRPBF is a section of Clock/Timing - Programmable Timers and Oscillators and is specifically a precision, programmable oscillator that engineers can use to configure a wide range of frequency and phase-locking applications, from low cost clocks to phase-locked loops (PLLs). It is the ideal, low-cost, low noise and low-power, highly configurable alternative for applications requiring precision frequency and phase control.

The LTC6905CS5-100#TRPBF offers high output accuracy and stability at frequencies ranging from 50 kHz to 500 MHz, making it suitable for a wide range of applications in both clock and PLL designs. Its programmability also enabels fast and easy setup and configuration, allowing engineers to quickly and easily adapt the chip to their specific needs.

Features of the LTC6905CS5-100#TRPBF

• Wide operating frequency range of 50 kHz to 500 MHz
• High output accuracy and stability at frequencies
• Low noise charge pump
• Low power consumption
• Programmable oscillator divider (OD) for output frequencies up to 32MHz
• Programmable loop bandwidth for fast lock times
• On-chip differential reference or single ended operation

Application Fields of LTC6905CS5-100#TRPBF

The LTC6905CS5-100#TRPBF is suitable for a wide range of applications in both clock and PLL designs. It could be used in applications such as:

• Reference clock design
• Core frequency generation
• Variable frequency clock source
• Serial High-speed Interface (SerDes) clock synthesis
• FPGA/DSP clock synthesis
• Pulse-code modulator clock synthesis
• Multi-channel and multi-phase clock generation

Working Principle of LTC6905CS5-100#TRPBF

The LTC6905CS5-100#TRPBF is a low noise, low power, highly configurable programmable oscillator based on the phase frequency detector (PFD) and charge pump (CP) method. It has an internal, differential analog phase and frequency detector (PFD) and a three-state output, low-noise charge pump. An external resistor divider (RD) is used to set the reference frequency. The reference and feedback frequencies are compared in the PFD to generate a voltage signal proportional to the phase and frequency errors.

The voltage signal is then filtered by the loop filter and applied to the CP. The output of the CP is compared with a reference voltage and the resulting voltage is used to control an oscillator\'s frequency. The frequency of the oscillator output is divided by an on-chip oscillator divider (OD). The divided frequency then passes through a programmable divide-by-N (Division Ratio [N]) to generate the programmable output frequency.

The loop filter, oscillator, and output divide-by-N are all configurable with resistors or capacitor. The output frequency range and stability is determined by the combination of these elements.

Conclusion

The LTC6905CS5-100#TRPBF is a section of Clock/Timing - Programmable Timers and Oscillators and is specifically a high performance and low cost PFD and CP based oscillator. It has a wide range of features that make it well suited for clock and PLL designs, as well as a wide range of applications. The output accuracy and stability of the chip is high and makes it ideal for applications requiring precision frequency and phase control.