5V49EE901-064PGGI

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Clock Generators, PLLs, Frequency Synthesizers, and the 5V49EE901-064PGGI

Clock Generators, PLLs, and Frequency Synthesizers are electronic circuit devices that generate timing signals with a specific frequency and phase accuracy. These timing signals can be used in digital, analog, and radio-frequency (RF) circuits, often in applications where the output signal should be amongst the most stable and accurate possible. Their use in communication and automotive industry applications is often essential in providing accurate timing in order to ensure safe and efficient operations.

The 5V49EE901-064PGGI, as one example of a clock generator/synthesizer, is a high-performance, low-power device that generates an accurate, low-jitter output clock signal with a total integrated RMS-jitter of less than 100ps (100 picoseconds) over the full temperature range. This jitter performance is superior even to many PLLs (Phase Locked Loops) and other devices available on the market.

Application Field

The 5V49EE901-064PGGI is suitable for a wide range of applications. It is often used as a system clock generator, providing a fixed frequency and high accuracy clock signals down to the nanosecond level, and is applied in many digital systems such as communications project, computer processors, embedded memory controllers and more. It can also be used as an RF synthesizer, where its low noise performance and low jitter make it ideal for use in radio frequency systems such as communication infrastructure and telecommunications.

In automotive applications, its low power consumption also makes it well suited for use as a time clock generator. Its robustness and accuracy makes it suitable for use in safety-critical automotive systems where high-precision timing is essential to ensure proper functioning. Other potential uses include audio and video systems, instrumentation, high-precision measurement applications, and more.

Working Principle

The 5V49EE901-064PGGI is based on a Voltage Controlled Crystal Oscillator (VCXO) with a built-in phase locked loop (PLL). This design allows the device to be configured as both a clock generator or a frequency synthesizer.

When operating as a clock generator, the VCXO requires a fixed external clock signal that is referenced against a reference crystal oscillator. The PLL controller then adjusts the frequency of a slave VCXO, making any small differences in frequency between the two inputs quickly and precisely corrected. The output signal is then the stable, low-jitter slave clock signal.

When operating as a frequency synthesizer however, the frequency of the output signal can be precisely adjusted between two programmed frequency limits. This is done by varying the voltage on the VCXO in direct proportion to an external control voltage. This voltage-controlled oscillator can be programmed to operate within a specific frequency range, allowing for a flexible frequency source with excellent accuracy and low jitter.

The 5V49EE901-064PGGI has a wide range of programmable functions and settings, allowing it to be customised to suit the needs of the application. Some of these include a wide frequency range from 10MHz to 400MHz, adjustable output power levels, programmable pull range, and a wide input operating voltage range of 1.6V to 5V.

The device also features a wide temperature range of -40 to 85 degrees Celsius, allowing it to be used in many different environments, including industrial and automotive applications. In addition, the 5V49EE901-064PGGI is EMI-optimised, reducing the chances of output signal interference.

In conclusion, the 5V49EE901-064PGGI is a high-performance, low-power clock generator/frequency synthesizer ideal for communication and automotive applications. Its low jitter, low-power consumption, and excellent accuracy make it well suited for use in many different applications, from digital systems and RF synthesizers to automotive safety-critical systems.

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