IDT23S05E-1DCI

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IDT23S05E-1DCI is part of the clock generator family, specifically a Phase Locked Loop (PLL) device. It is a small size, highly integrated, low power frequency synthesizer that is used for a wide range of applications, including networking and audio products, consumer electronics, and test and measurement equipment. The device is suitable for use in a variety of wireless and wired communication systems, including FDD-LTE, CDMA2000, GSM/GPRS, Wi-Fi and Bluetooth.

The IDT23S05E-1DCI combines a flexible buffered reference input, high-performance VCO, programmable fractional-N digital synthesizer, output divider and digital locking circuitry in a single integrated circuit. The device can be programmed with a low-voltage serial interface (I2C or SPI) to provide a wide frequency selection with assured output characteristics.

The device can be used in a wide range of applications, including high-speed clocks in consumer electronics and network communication systems, clock input and output dividers, local oscillators in radio receivers and transmitters, frequency synthesizers, and system clock sources. For example, the device can be used in consumer devices such as mobile phones, PDAs, digital TVs, set-top boxes, gaming consoles, and audio products, as well as for test and measurement equipment, radio and optical communication networks, and GPS systems.

The working principle of an IDT23S05E-1DCI PLL is based on the fact that an oscillator’s output frequency is controlled by the input reference frequency. If the input reference frequency is within the range of the VCO’s oscillation, then a stable output frequency is generated. The PLL control circuit maintains a constant relationship between the reference and output frequencies by controlling the feedback loop that determines the output frequency.

The IDT23S05E-1DCI has two main components: a frequency synthesizer block and a programmable output divider block. The frequency synthesizer block produces a high-frequency signal that is divided down to the desired output frequency. The programmable output divider block provides the ability to divide the output frequency down to an even lower frequency with a wide range of division ratios.

The frequency synthesizer block uses a phase detector (PD) and a VCO, along with an external reference signal, to generate the desired frequency. The phase detector compares the phase of the reference signal and the VCO\'s output signal and produces an error signal. This error signal is used to control the frequency of the VCO. Depending on the phase difference between the reference signal and the VCO signal, the frequency of the VCO will either increase or decrease to reach the desired frequency.

The output divider block has two main parts: a variable-width look-up table and a phase frequency detector. The look-up table contains a range of division ratios depending on the required output frequency. Depending on the reference frequency, the phase frequency detector will generate the division ratio which is then used to program the look-up table. This allows the output frequency to be divided down to the desired frequency.

The IDT23S05E-1DCI PLL device provides a flexible, low-power solution for a wide range of clock applications. Its highly integrated design makes it ideal for use in today’s demanding wireless and wired communication systems. With its programmable fractional-N digital synthesizer, output divider, and digital locking circuitry, the device can be configured to generate a wide range of output frequencies with high accuracy.

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