Series:	FemtoClock®
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
PLL:	--
Input:	--
Output:	--
Ratio - Input:Output:	--
Differential - Input:Output:	--
Frequency - Max:	--
Divider/Multiplier:	--
Voltage - Supply:	3.3V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	32-VFQFN Exposed Pad
Supplier Device Package:	32-VFQFPN (5x5)
Base Part Number:	ICS844S0258-07

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Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

The 844S0258BK-07LFT is a type of clock generator, phase-locked loop (PLL) and frequency synthesizer. It provides a low-jitter, multi-stage frequency synthesis solution for multiple applications. This device is optimized for the low cost, small form factor and low power consumption.

Working Principle

The 844S0258BK-07LFT consists of a dual-stage, analog and digital PLL. It generates a low-jitter clock frequency that is stable to ambient temperature and power supply variations. The first stage consists of a voltage-controlled oscillator (VCO) which is responsible for generating the main clock frequency. The output from the VCO is then divided by two and then multiplied by a programmable digital counter. This counter is responsible for dividing or multiplying the output from the VCO to produce a desired output frequency.The second stage of the PLL is a phase frequency detector (PFD) which detects any difference in the phase or frequency of the input and output signals and generates an error signal that is used to adjust the output frequency. The error signal is used to adjust the VCO and the digital counter. This ensures that the output frequency is exactly the same as the input frequency.

Applications

The 844S0258BK-07LFT can be used in a variety of applications, such as wireless communication systems, embedded systems, and portable applications. It can be used as a clock generator for clocking multiple devices such as an ASIC, CPU, or FPGA. It can also be used as a PLL or frequency synthesizer to generate multiple frequencies from a single frequency. In addition, the device can be used in test and measurement systems, such as oscilloscopes, network analyzers, and spectrum analyzers.The 844S0258BK-07LFT can also be used in automotive applications. It can be used as an automotive clock for vehicles that require a low-jitter clock for proper operation. Additionally, the device can be used in automotive systems that require frequency synthesis to generate multiple frequencies from a single frequency source.

Conclusion

The 844S0258BK-07LFT is a versatile device that can be used in a variety of applications. It is a dual-stage, analog and digital PLL that provides a low-jitter clock frequency that is stable to ambient temperature and power supply variations. The device can be used as a clock generator, PLL, or frequency synthesizer. It can also be used in test and measurement systems, as well as automotive applications.

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