ICS291PGIT

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The ICS291PGIT is an integrated oscillator circuit composed of a frequency synthesizer and a lockable programmable divider. The oscillator can be programmed to output a wide range of frequencies from 50 kHz to 24 MHz using an integrated oscillator and an external voltage-controlled oscillator (VCO).

The frequency synthesizer is composed of a phase-locked loop (PLL) circuit. The PLL is a circuit that uses feedback to synchronize the frequency of the output signal with the frequency of the input signal. The PLL is composed of a Phase Detector (PD), a Loop Filter (LF), and a Voltage Controlled Oscillator (VCO). The PD receives the output signal from the VCO and an input signal from the frequency divider circuit. It compares the frequencies of the two signals and sends a control voltage to the VCO. The control voltage adjusts the frequency of the VCO until it matches the input signal.

The frequency divider circuit is composed of two logic circuits, a static programmable divider and a lockable programmable divider. The static programmable divider divides the VCO output frequency by a fixed divisor. The lockable programmable divider uses divide-by-N counting to divide the output frequency by any divisor from 1 to 4096. The divider has a lock-in feature to help reduce the debugging time while adjusting the output frequency.

The combined function of the PLL and the frequency divider allows the ICS291PGIT to generate a wide range of frequencies (from 1 to 24MHz). It also supports output frequencies that are divided by 8, 16, and other even numbers. The frequency range of the ICS291PGIT is customizable, so it can be used in many applications. For example, it can be used in communication systems, medical imaging systems, and embedded system clock generation.

The ICS291PGIT is designed for low power consumption and low noise operation. It consumes only 4.7 microamps of current and can operate from a single 1.5V or 3.0V power supply. The output signal is CMOS-compatible and is phase-shifted 90° relative to the oscillator signal. This allows the output signal to be used in clock generation and signal multiplexing applications.

The ICS291PGIT is a versatile clock/timing generator that can be used to generate a wide range of frequencies. It is composed of a PLL and frequency divider circuit. The PLL can adjust the output frequency by controlling a VCO, while the frequency divider can divide the output frequency by any divisor from 1 to 4096. The ICS291PGIT is designed for low power consumption and low noise operation and can operate from a single 1.5V or 3.0V power supply.

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