ICS663MI

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The ICS663MI Clock Generator/Timing chip is a precision clock generator with a wide array of applications. In clocks and timing circuits its primary use is to generate a precise clock frequency with adjustable edges, widths, and phases. The ICS663MI can also be used to generate pulse width modulated (PWM) outputs to drive piezo transducers, stepper motors, and other types of motor control. Other uses of the ICS663MI include clock synchronization, frequency division, phase alignment, and frequency synthesis.

The ICS663MI is a highly integrated, low power, 3.3V/1.8V CMOS phase-locked loop (PLL) chip specifically designed for clock synthesis and clock synchronization applications. Its PLL architecture utilizes four frequency synthesis paths and supports both PWM and static frequency outputs, enabling flexible clock generation. Additionally, the ICS663MI is equipped with a voltage controlled oscillator (VCO), two adjustable current sources and one DAC/ADC, allowing for a more precise frequency synthesis than a pure PLL chip.

The application field of ICS663MI covers a wide range of timing and clock synthesis needs. It is ideal for applications requiring low-jitter, high-speed clocks produced in embedded systems and microprocessors. The ICS663MI can also provide modulated vectors for radar systems and piezo transducers, such as automotive safety systems. Additionally, the device can be used to provide precision synthesized frequency outputs to control timing in communications and display devices.

The working principle of ICS663MI is based on a feedback system where the device will lock-on to an existing clock as long as the input frequency remains constant. This external clock reference is fed back through the input port and compared to the internal clock oscillation. If the two signals are matching in frequency, then the ICS663MI will remain locked-on to the reference. The PLL of the ICS663MI then steps up or down the internal oscillator to matching frequencies.

The ICS663MI contains several onboard features to improve the accuracy of the synthesized clock output. The device features an on-board voltage-controlled oscillator (VCO) and two current sources to produce different frequencies, with a maximum of 120MHz output frequency. It also includes a built-in PLL loop filter to minimize resultant phase jitter. In addition, the ICS663MI is capable of driving 3.3V, 2.5V, or 1.8V I/O signals and can generate both rising and falling edges for edge-aligned clocking applications.

In conclusion, the ICS663MI is a low-power, highly integrated PLL clock generator/timing chip. It is designed for applications that require precise clock synthesis, clock synchronization, and frequency division. The ICS663MI is ideal for embedded systems and microprocessors and supports both PWM and static frequency outputs. The device contains several onboard features, such as a VCO, two adjustable current sources, and a PLL loop filter, to output precise clock frequency with adjustable edges, widths, and phases. Furthermore, the ICS663MI is capable of driving 3.3V, 2.5V, or 1.8V I/O signals and can generate both rising and falling edges for edge-aligned clocking applications.

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