843251AGI-04LF

843251AGI-04LF is a kind of clock/timing generator, PLLs, frequency synthesizer which provides clock timing solutions for a wide range of applications. This device integrates an integrated 32-bit synthesizer with a variable frequency output, wideband PLL, and an asynchronous counter that is based on a architecture in which the clock and data are multiplexed. Its unique programmable output frequency feature is capable of providing up to 4 different programmable output frequencies at any time.

Application Field

843251AGI-04LF is used in many digital systems including digital video system (DV), digital cameras, audio and video products, test equipment, automotive systems and communication systems. It can be used to generate a wide range of clock frequencies for different applications. This device offers the flexibility to select the best voltage range for the required application, with a set of configurable supply voltage options. The Variable Frequency Output can also be used for other applications such as frequency division and phase locked loop (PLL) frequency synthesis.

843251AGI-04LF is also used in applications such as spread spectrum clocking, frequency division and as an output demultiplexer. It can be used in wired and wireless communications, including cellular communications, broadcast communications, telemedicine, Advanced Television Systems Committee (ATSC) and digital video broadcasting systems. This device is suitable for use in bi-directional applications such as RF playout, serialization and de-serialization. It can be used in other applications such as signal conversion, frequency multiplication, modulation, digital transmission and signal routing.

Working Principle

843251AGI-04LF works according to a basic architecture, wherein the clock signal and the data signal are multiplexed. In this architecture, the clock signal is generated by the integrated 32-bit synthesizer, while the data signal can be either analog or digital. The clock signal is used to drive the internal circuitry that routes the data signal. The data signal is then demultiplexed onto one of four preselectable output frequencies.

The preselectable output frequencies of 843251AGI-04LF are generated by the wideband Phase Locked Loop (PLL), which locks the output frequency to that of the input frequency. The output frequency is then divided down using the asynchronous counter to generate the pre-selectable frequencies. This device also features a programmable output frequency feature which allows for four uniquely programmable output frequencies at any one time.

The 843251AGI-04LF is also used in spread spectrum clocking applications where the output signal is spread out around the center frequency to reduce the signal noise. The signal generated by the device is divided into multiple channels and each channel is shifted slightly in frequency in order to spread the signal over a wider range.

843251AGI-04LF is capable of providing a robust, cost-effective clocking solution in a wide variety of applications. This device is a reliable and efficient solution for low-power applications and features a low power consumption and minimal heat dissipation.