BF-156.250MCB-T

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Oscillators

Oscillators are electrical circuits which produce a regularly repeating signal. As such, they are key components in many electronic products, and are widely used in a variety of applications from wireless communication to computing to radar. Oscillators are broadly categorized into two main families: frequency-controlled oscillators, and phaselocked oscillators.

BF-156.250MCB-T

The BF-156.250MCB-T is a frequency-controlled oscillator, which is specifically designed for use in Bluetooth communications systems. It provides an output frequency range of 156.25 to 158.75 MHz and a stability of +/- 200 kHz. The operating temperature range is from -40°C to +85°C.

Application Field

The BF-156.250MCB-T is typically used in Bluetooth systems which require a highly reliable and accurate frequency output. The oscillator is suitable for both base station and mobile applications, offering excellent phase noise performance, low power consumption, and a small package size.

Working Principle

The BF-156.250MCB-T is composed of several components. The crystal oscillator and capacitor form a crystal-controlled Pierce oscillator circuit. The Pierce oscillator is used to create a stable, periodic output signal which is accurate and precise. The circuit also contains a voltagecontrolled oscillator (VCO), an amplifier, a balance network, and other components. The VCO tracks the crystal oscillation frequency, and the amplifier provides adequate power for the output signal.

The output of the VCO is buffered by a low-noise amplifier, and then passed through a balance network that adjusts the waveform to optimize the signal. The output of the balance network is then fed into the output amplifier, which further amplifies the signal and provides the desired output power. The oscillator is controlled by an internal voltage source which adjusts the gain of the amplifier, allowing the oscillator to output a frequency that is slightly different from the crystal oscillator.

In addition, the BF-156.250MCB-T includes a temperature-compensation circuitry which helps to maintain a stable output frequency over a wide temperature range. Finally, the oscillator is enclosed in a package which provides superior shielding for EMI/RFI reduction.

Conclusion

The BF-156.250MCB-T is a frequency-controlled oscillator developed specifically for use in Bluetooth communication systems. It provides a highly accurate and stable frequency output, and offers excellent phase noise performance, low power consumption, and a small package size. The oscillator is composed of several components, including a crystal oscillator, VCO, amplifier, and balance network. Finally, the oscillator includes temperature-compensation circuitry for improved frequency stability.

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