91305AMLFT

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Modern clock circuits often use a form of clock generator or synthesizer known as 91305AMLFT. This device combines the features of both a programmable oscillator and a Programmable Logic Device (PLD) to greatly improve system clock reliability. In this article, we will discuss the application fields and working principles of 91305AMLFT.

General

The 91305AMLFT is a highly reliable clock generator from Maxim Integrated. It is well-suited for asynchronous applications such as cache coherency and sequential clocking. This device can be placed close to the CPU or chip to minimize timing skew and jitter due to interconnects. The 91305AMLFT provides wide frequency range and support for up to four independent clock outputs with nearly identical frequency.

Applications

The 91305AMLFT can be used in a number of applications, including:

• Cache coherency
• Data synchronization
• Data tracking
• Timing/frequency synthesis
• Communications systems

The device is well-suited for a wide range of applications in these areas.

Features

The 91305AMLFT provides an impressive set of features that enable its effectiveness in a variety of applications. Some of these features include:

• Frequency range of up to 450 MHz
• Up to 4 independent clock outputs with precise frequency control
• Multi-rate clocking with precise frequency control
• Phase jitter of 1 ps RMS
• Power supply voltage range of 1.2 V - 3.6 V
• Programmable VCO and PLL dividers to reduce frequency range and increase accuracy
• Low-skew output buffers for signal integrity
• Integrated high-stability crystal oscillator
• Programmable output drive strength
• Integrated ESD protection

The combination of these features makes the 91305AMLFT an ideal device for high reliability design.

Working Principle

The working principle of the 91305AMLFT is fairly simple, and can be divided into four main stages:

1. Generation of a master clock signal
2. Synthesis of the main clock signal
3. Generation of the output clock signals
4. Transmission of the output clock signals

The first stage is the generation of a master clock signal which is done by the integrated high-stability crystal oscillator. This provides a reference frequency which is used in the following stages to generate the output clock signals. The PLL and VCO dividers are then used to program the oscillator and synthesize the main clock signal. This main clock signal is then used to generate the output clock signals. Finally, the output clock signals are transmitted via the integrated output buffers.

Conclusion

The 91305AMLFT is an ideal choice for timing/frequency synthesis and data synchronization applications. This device provides a wide frequency range and a number of features which make it well-suited for these applications. The working principle is fairly simple, and the device is reliable and easy to use. As such, it is expected to remain a popular choice for clock generation in a variety of applications.

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