SN74LV4046APWR Integrated Circuits (ICs)

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The SN74LV4046APWR is a clock generator, phase-locked loop (PLL) and frequency synthesizer designed to meet the needs of today\'s high-speed clock and data transfer applications. It is a low power, low jitter, wide frequency range and programmable device that could find versatile application fields in communication, consumer, automotive and industrial electronics. It is part of Texas Instruments\' high speed LV product family which operates from a single 3.3V supply.

Features and Benefits

The SN74LV4046APWR is composed of a dual-loop, four-channel, configurable PLL with unique features such as programmable frequency division that makes it well-suited for applications that require multiple, independent frequencies, such as DISPLAYPORT for HDTVs. The device also provides a programmable 50% duty cycle output clock and has an automatic frequency tracking capability that helps eliminate jitter and noise, allowing users to generate very precise clock signals.

The SN74LV4046APWR offers a wide frequency range of 1Hz to 40MHz and supports both single-ended and differential output signals. The device is surface-mounted and comes in a 4x4mm, 32-pin QFN package.

Application Fields

The SN74LV4046APWR finds varied application fields in almost all data communication, consumer, automotive and industrial electronics. Some of the common applications of the device include:

• HDTVs, DVI/HDMI, multimedia, and other flat-panel displays
• Cameras: image, video and digital
• Network equipment: routers, switches, Bridges,Base-Stations
• Ethernet, Serial ATA and Fibre Channel Interfaces
• DSL, cellular and navigation systems
• Consumer products: DVD players, set-top boxes, PCs, and audio
• Phone systems and other audio and voice applications

Working Principle

The SN74LV4046APWR generates clocks and data signals using a dual-loop, four-channel PLL. The device receives the reference clock, generates the CLK0 and CLK1 outputs, programs any the frequency dividers and provides the resulting frequencies to the PLL inputs. Initially, the PLL acquires the reference clock\'s frequency. Once PLL has acquired the reference, it continues to track the input clock and adjust the outputs accordingly.

The PLL enables the SN74LV4046APWR to be programmed for different frequencies and output modes such as low-noise/high power, high data rate, low jitter and low frequency applications. Additionally, the programmable outputs, and reference clock divider enable the device to generate multiple, independent frequencies for applications with multiple data rates such as the HDMI/DisplayPort.

The SN74LV4046APWR is a highly integrated and cost-effective clock generator, PLL and frequency synthesizer. It offers a wide frequency range of 1Hz to 40MHz and supports both single-ended and differential output signals. The device also provides a programmable 50% duty cycle output clock and has an automatic frequency tracking capability that helps eliminate jitter and noise, allowing users to generate very precise clock signals.

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