AX7DCF1-804.3100C

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Introduction of Oscillators

An oscillator is an electronic device that generates a signal or waveform, such as a voltage or current, at a regular or predetermined frequency. Oscillators are used in a variety of applications, such as in radio and television transmitters, signal generators, sound and vibration meters, microwave communication systems and computers. Oscillators may either generate or consume power, depending on the design.

AX7DCF1-804.3100C Application Field and Working Principle

The AX7DCF1-804.3100C is an oscillator specifically designed for automotive applications. It is a digital-controlled oscillator (DCO) that operates at a frequency of 804.3100 MHz, and is capable of producing noise-free output signals. The device utilizes a self-compensating LC oscillator, which offers excellent performance over a wide temperature range. The oscillator is compatible with many automotive electronic systems including emissions control, powertrain, and safety systems.

In the AX7DCF1-804.3100C, the signal generator is made up of an inductor, capacitor, and resistor. The inductor and capacitor are connected to form an LC oscillator. The output of the oscillator is connected to the input of a voltage-controlled amplifier (VCA). The VCA is then connected to the synchronous rectifier, which converts the input signal into a square wave. This square wave is then sent to the comparator, which compares it to a reference voltage and generates a square wave output.

The output signal from the comparator is then sent to the waveform buffer, which converts the input waveform into 8-bit digital words. These digital words are used to control the VCA, which adjusts the amplitude of the oscillator output. Once the output has been adjusted to the desired level, it is then sent to the synchronous rectifier, which implements digital control to vary the phase of the oscillator signal. This allows for digital control of the frequency and amplitude of the oscillator output.

The AX7DCF1-804.3100C is an ideal choice for applications requiring low noise and fast response. Its digital control allows for precise tuning, enabling applications to maintain highly accurate frequency output over a wide temperature range. The device has been designed to operate over an extended temperature range of -40 to +125 degrees Celsius, and is qualified for the automotive temperature profile.

Conclusion

The AX7DCF1-804.3100C is a reliable, low noise digital-controlled oscillator designed for use in automotive applications. The device is equipped with a self-compensating LC oscillator and a voltage-controlled amplifier, allowing for precise tuning over a wide temperature range. Its digital control allows the frequency and amplitude of the oscillator output to be precisely controlled, providing excellent performance and reliability.

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