8701AY-01LFT

Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Clock Generator, Fanout Distribution, Multiplexer
PLL:	No
Input:	LVCMOS, LVTTL
Output:	LVCMOS, LVTTL
Number of Circuits:	1
Ratio - Input:Output:	1:20
Differential - Input:Output:	No/No
Frequency - Max:	250MHz
Divider/Multiplier:	Yes/No
Voltage - Supply:	3.135 V ~ 3.465 V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	48-LQFP
Supplier Device Package:	48-TQFP (7x7)
Base Part Number:	ICS8701-01
Series:	--

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Introduction

8701AY-01LFT is a clock generator from the family of clock/timing devices, specifically clock generators, PLLs, and frequency synthesizers. This device is designed for providing a synchronous clock for a system in need. It can furthermore be customized and tailored for specific needs, but for the purpose of this article, we will focus on the 8701AY-01LFT\'s primary application, as well as its working principle.

Application Field

The 8701AY-01LFT is a low cost and low power clock solution for system needing low frequency and low jitter clocks. It can be used in a variety of applications such as networking, communications, and embedded systems, to name a few. It is designed to be a flexible, reliable and power-efficient solution. The 8701AY-01LFT features include a wide range of phase-locked loop (PLL) output frequencies and low jitter performance that makes it ideal for networking and communications systems. It has an advanced control architecture, allowing for both PLL clock multiplication and frequency synthesis operation. Additionally, it has an extremely fast startup time and can be used in applications where reliability and consistency are critical.

Working Principle

The 8701AY-01LFT uses a dual self-adjusting PLL system to generate a low-noise clock output with very low clock jitter. This makes it ideal for synchronizing data transmission between multiple devices or systems. The PLL consists of three main components - a phase-frequency detector (PFD), a charge-pump, and a voltage-controlled oscillator (VCO). The PFD takes in two reference clock signals and compares their phase and frequency, and outputs a corrected version with the same phase and frequency. The charge pump then converts the PFD output into a voltage signal, which is then used to control the VCO. The VCO\'s output is the system\'s clock output, and it is synchronized to the same phase and frequency of the input reference clocks. The 8701AY-01LFT also includes a programmable digitally-controlled oscillator (DCO). This allows for a wider range of frequency options and more versatile output timing configuration options than traditional analog PLLs. The DCO can also be tuned for improved jitter performance, allowing for more reliable transmission of data.

Conclusion

The 8701AY-01LFT is an excellent solution for systems requiring low-noise, low jitter clocks. Its dual self-adjusting PLL design allows for low power operation, as well as enabling a wide range of frequency and synchronization options. Its range of features, including the programmable DCO, make it perfect for use in networking, communications, and embedded systems.

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