CY2545FCT

Differential - Input:Output:	No/No
Base Part Number:	CY2545
Supplier Device Package:	24-QFN-EP (4x4)
Package / Case:	24-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply:	2.25 V ~ 3.6 V
Divider/Multiplier:	Yes/No
Frequency - Max:	166MHz
Series:	--
Ratio - Input:Output:	2:8
Number of Circuits:	1
Output:	Clock
Input:	Clock, Crystal
PLL:	Yes with Bypass
Type:	Fanout Distribution, Fractional N Synthesizer, Multiplexer, Spread Spectrum Clock Generator
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The CY2545FCT (Fractional-N PLL) is a family of expandable clock-synthesis chips and is an innovative time-domain clock-synthesis device from Cypress Semiconductor. It uses fractional-N frequency division to provide clock signals at frequencies between 5 MHz and 500 MHz. The CY2545FCT combines the best features of both PLL and divider ICs to reduce parts count, minimize clock design time and effort, and lower costs of board layout and implementation. ApplicationsThe CY2545FCT is primarily designed to help design engineers synthesize any frequency within the allowable range between 5 MHz and 500 MHz. It is used in a variety of clock applications, including cell phone base stations, computing peripherals, digital receivers, server motherboards, and set-top boxes. The device is also used in digital video and broadcast, digital radio broadcast (HD radio), Ethernet and RAID controllers, multimedia test and measurement equipment, satellite radio receivers, and medical imaging. Another application of the device is to generate the clock for a Pulse-Width Modulation (PWM) controller, for use in motor drives and power adapters. Working PrincipleThe underlying principle behind the CY2545FCT is the division of time into discrete intervals. This process is called Frequency Division. In a PLL, phase-frequency detectors create the control signal that compensates for the difference between the VCO’s frequency and the reference signal. The resulting output of the phase-frequency detector is used to adjust the voltage on the VCO. The CY2545FCT employs fractional-N frequency division technology to achieve a high degree of frequency accuracy and jitter performance. The device divides the input reference clock signal by an integer or a fractional value, which is determined by the device configuration. The reference frequency is input to the device, and the output frequency is the divider ratio multiplied by the reference frequency. The device has two distinct modes of operation – fractional-N and integer-N, both of which operate in the same way. The fractional-N mode of operation involves a digital loop filter, a digital-to-analog converter, and a loop control circuit within the device. The digital loop filter combines higher-order sigma-delta loops and filters to optimize the jitter performance of the resulting output signal. The digital-to-analog converter then produces a control voltage, which is used to adjust the frequency of the VCO and the output signal. In integer-N mode, the output frequency is an integer multiple of the reference frequency. The device has a closed-loop architecture that provides excellent stability and accuracy. ConclusionThe CY2545FCT is an innovative and cost-effective clock-synthesis device that makes it possible for design engineers to generate frequencies between 5 MHz and 500 MHz. It is primarily used in a variety of clock applications, such as cell phone base stations, computing peripherals, digital receivers, server motherboards, and set-top boxes. The device works by employing fractional-N frequency division technology to achieve high accuracy and jitter performance. The device has two distinct modes of operation – fractional-N and integer-N – and provides excellent stability and accuracy. It also offers a reduced parts count, thereby minimizing clock design time and effort and lowering costs.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description