EL5001IRE

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International Rectifier’s EL5001IRE family of integrated circuit devices are clock/timing devices specifically designed to reduce electromagnetic interference (EMI) in frequency generation and regulation systems. The EL5001IRE provides the capability to interface digital and analog frequency control signals to analog voltage-controlled oscillators (VCOs), the input sources of the frequency generation and regulation systems. Its clock/timing applications include frequency synthesisers, voltage controlled oscillators (VCOs), frequency dividers, dividers with reset, and dividers with multiple outputs.

The EL5001IRE features a programmable diversity factor, allowing more flexibility when optimizing frequency regulation and interference reduction. The device also features built-in low jitter and low noise operation, making it ideal for applications such as automotive, industrial, aerospace and communication. This device is also capable of generating multiple output frequencies from the same multi-input source.

The EL5001IRE works using a differential input signal, which is compared with a digital reference frequency. The reference frequency is generated by an external crystal oscillator or a crystal-based RMS multiplier. The device then modulates its output as a function of the difference between the two inputs. The modulation rate is given by the frequency of the internal oscillator, and can be adjusted by changing the oscillator\'s frequency.

The frequency modulation rate of the EL5001IRE is adjustable by changing the values of an internal register. This allows the user to have multiple-frequency regulation and interference reduction options. The device has four different modes of operation, namely: frequency synthesis, frequency division, frequency division with reset, and frequency division with multiple outputs.

In frequency synthesis mode, the EL5001IRE receives a digital reference frequency, and modulates its output as a function of the difference between the reference frequency and the input signal. This mode is ideal for applications where multiple output frequencies need to be generated from the same input source. These may include high-precision applications such as frequency synthesizers and VCOs.

In frequency division mode, the EL5001IRE divides the input frequency to generate a set of output frequencies. This mode is ideal for applications such as frequency dividers, dividers with reset, and dividers with multiple outputs. By changing the value of an internal register, the dividing ratio can be changed with each cycle, allowing the user to generate multiple output frequencies.

The EL5001IRE also features an auto-reset capability, which can be used to reset the internal oscillator in the event of an anomaly in the input signal. This is particularly useful in applications where high levels of precision are required and unexpected errors need to be avoided.

The EL5001IRE is ideal for applications with stringent requirements for EMI reduction, as it has a built-in algorithm to reduce its output noise spectral occupancy. The EL5001IRE is capable of operating with a wide range of input frequencies, from 100 Hz to 500 MHz, making it an ideal solution for reducing EMI in various types of systems.

Overall, the EL5001IRE is a highly flexible and accurate clock/timing device with features designed for reducing EMI and providing high-precision frequency generation and regulation. Its adjustable divider rates, auto-reset capability, and built-in low jitter and noise characteristics make it an excellent choice for applications such as frequency synthesisers, VCOs, frequency dividers, dividers with reset, and dividers with multiple outputs.

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