83905AGLF

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The 83905AGLF is a high-performance, clock buffer/driver IC (Integrated Circuit) designed to support a wide range of applications including high-speed timing distribution and clock synchronization. The 83905AGLF is capable of providing extremely stable clock frequencies regardless of supply and temperature variations, making it suitable for highly accurate and dependable timing applications. This article will explore the field of applications and working principles of the 83905AGLF.

Applications

The 83905AGLF is specifically designed for use in high-end, low jitter (phase noise) applications such as clock distribution networks and communication systems. This IC is capable of providing clock signals with exceedingly low maximum frequency variations (as low as 30ppm). Such high stability makes the 83905AGLF an ideal choice for many mission-critical applications such as network synchronization and distributed clock generation.

Another application where the 83905AGLF can come in handy is a system with high levels of electromagnetic interference (EMI). The 83905AGLF is designed to offer superior EMI rejection, making it ideal for systems where timing integrity is a top priority.

The 83905AGLF also has several versatile features that make it suitable for a wide range of applications. For instance, the adjustable 3.3 V output voltage range allows for operation at higher supply voltages than that of the logic family used.

Working Principle

The 83905AGLF is a clock buffer/driver IC which increases low-level clock signals from lower frequency sources (such as LVCMOS) to higher frequencies of up to 900MHz. It can also be used to synchronize external crystal oscillator signals with a single AC-coupled external reference line. The 83905AGLF operates by generating output clock signals with minimal phase noise, jitter, and supply noise.

The core of the 83905AGLF consists of a low jitter PLL (Phase Locked Loop). This PLL consists of three main elements: a high-frequency VCO (Voltage Controlled Oscillator), a charge pump, and a loop filter. The VCO generates a clock signal which is then compared to the reference signal from the external reference line. The output of the PLL is then fed back to the charge pump and loop filter which adjust the output of the VCO to synchronize the output clock signal with the reference signal.

The 83905AGLF also features a high-speed 2-to-4-output differential clock buffer with exceptional jitter performance. This buffer is designed to provide output clock signals that are free from the effects of EMI, making it suitable for highly sensitive systems. In addition, the 83905AGLF features an adjustable output voltage range, allowing operation at higher supply voltages than that of the logic family used.

Conclusion

The 83905AGLF is a high-performance, clock buffer/driver IC capable of providing extremely stable clock frequencies regardless of supply and temperature variations. It is specifically designed for use in high-end, low jitter applications such as clock distribution networks, communication systems, and networks with high levels of electromagnetic interference. The 83905AGLF has a low jitter PLL at its core, and a 2-to-4-output differential clock buffer for exceptional jitter performance. This IC also features an adjustable output voltage range, allowing for operation at higher supply voltages than that of the logic family used.

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