87421AMILFT

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87421AMILFT is a type of clock generator found in various consumer, industrial, and military applications. The device provides an easy-to-use interface with both asynchronous clock input and buffered clock output. This allows for a wide range of timing applications, from adjusting for small jitters to setting complex frequencies for network synchronization.

The 87421AMILFT is a monolithic integrated circuit that can generate a wide range of frequencies from DC to 50 MHz. It is based on a phase-locked loop (PLL) architecture and consists of a programmable divider, phase detector, and voltage-controlled oscillator (VCO). The phase detector is responsible for locking the output frequency to the input signal by adjusting the VCO frequency. The frequency synthesizer holds the phase locked condition and adjusts the output signal based on the set divided down frequency.

On the input side, the 87421AMILFT can accept a signal between DC and 140 MHz. On the output side, the available signal range is DC to 50 MHz. The device also features low jitter, as well as low power consumption. It is suitable for use in a wide range of applications such as in computers, servers, telecommunications, security systems, and avionics.

At the heart of the 87421AMILFT is the control logic, which serves two main purposes. First, it is responsible for frequency setting: the desired frequency is set by selecting the appropriate division ratio of the input signal. Second, the control logic provides feedback control to the phase detector. The feedback control allows the phase detector to compare the reference signal with the VCO signal to keep the output frequency synchronized with the input signal.

In addition, the clock generator also supports a number of synchronous modes. In these modes, the phase detector uses a reference signal to synchronize the output signal to the input signal. This is useful for applications that require precise synchronization between the devices, such as digital audio, video, and communications networks.

In addition, the 87421AMILFT has advanced features such as false signal detection and suppressed carrier output. The false signal detection prevents spurious signals from corrupting the output signal. The suppressed carrier output eliminates harmonic frequencies produced by the divider, resulting in a cleaner output. It also provides a “dc-free” output that is ideal for audio applications.

Overall, the 87421AMILFT is a versatile clock generator with many features. It is well-suited for a variety of clock and timing applications and provides reliable operation with low jitter and high accuracy. The device is also cost-effective, making it an attractive choice for many applications.

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