CSPT857CNLG

Ratio - Input:Output:	1:10
Base Part Number:	IDTCSPT857
Supplier Device Package:	40-VFQFPN (6x6)
Package / Case:	40-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply:	2.3 V ~ 2.7 V
Frequency - Max:	220MHz
Differential - Input:Output:	Yes/Yes
Series:	--
Number of Circuits:	1
Output:	Clock
Input:	Clock
Main Purpose:	Memory, DDR, SDRAM
PLL:	Yes
Part Status:	Obsolete
Packaging:	Tray

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CSPT857CNLG: Application Field and Working Principle

Clock/Timing - Application Specific The CSPT857CNLG is an integrated circuit designed for timing-critical applications where precise, reliable frequency control is key. Designed by Semtech Corporation, this integrated circuit provides users with a low-power, low-jitter frequency reference source for their given application.

What is CSPT857CNLG?

CSPT857CNLG is an integrated circuit with time pulse generator that is capable of providing a variety of precision timing and digital frequency/phase control functions. The CSPT857CNLG is built with a special digital filter and phase lock loop (PLL) to deliver precise jitter-reduced timing signals. It can generate three types of pulses: an adjustable frequency (200-480MHz), a pulse with the same period as the reference signal, and a pulse with a programmable frequency with zero phase-delay. As a result, this IC is an ideal solution for timing applications where lower power consumption, high performance and precise timing are required, such as clock and data recovery networks, frequency synthesizers, jitter attenuators and clock multipliers.

Features

1) Low-power operation CSPT857CNLG offers outstanding performance with very low total power consumption. It is designed with a low EMI architecture that allows for excellent overall power efficiency.2) Highly accurateThe PLL provides an exceptionally precise 0.05ps jitter and high accuracy of the output frequency. This is important for applications with strict requirements for precise timing.3) Small form factorThe CSPT857CNLG comes in a compact 10-pin MSOP package, allowing for easy PCB integration.4) Cost-effectiveThe low cost of this clock generation solution makes it an ideal choice for a wide range of applications.

Application fields

Due to its high precision and accuracy, the CSPT857CNLG is suitable for a wide range of applications in communication, signal processing, instrumentation, industrial and other high-performance applications. These include:1) Clock and data recovery networks 2) High-frequency signal generation 3) Frequency synthesis 4) Jitter attenuation 5) Clock multipliers 6) High-speed communication networks

Working Principle

The CSPT857CNLG dynamically adjusts the output frequency and duty cycles in response to a reference source. It has two modes, synchronous and asynchronous, both of which operate with a reference clock whose frequency can be set from 10 to 600MHz. In synchronous mode, the output frequency is adjusted to match the reference frequency, and the duty cycle of each output is digital phase locked to the rising edge of the reference clock, providing precise frequency and phase control.In asynchronous mode, each output can be individually programmed to any frequency up to 600MHz and the phase delay between each output pulse can be programmed from 0 to 360 degrees.The chip also has power saving mode, which is enabled whenever the chip senses that it has been inactive for some period of time. This feature automatically puts the chip into low power consumption mode, thus saving power.

Conclusion

The CSPT857CNLG is a powerful, low-power frequency reference solution designed for timing-critical applications. It offers outstanding accuracy and precise jitter-reduction with a small form factor and a cost-effective price. The chip is used in a wide range of applications, including clock and data recovery networks, frequency synthesis, jitter attenuation, and clock multipliers. Its two operating modes, synchronous and asynchronous, allow for great flexibility in controlling the output frequency and duty cycles. It also has power saving mode, which helps to further reduce the overall power consumption.

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