353LB3C38CT

Oscillators: 353LB3C38CT Application Field and Working Principle

The 353LB3C38CT oscillator is a high-performance oscillator in the field of VCO (Voltage Controlled Oscillator) designed and developed to meet the need of wide frequency range, high-frequency stability and low phase noise. Taking advantage of trench MOS transistor technology, the 353LB3C38CT is designed with a low-noise resonator that can operate within a frequency range of 697~2750MHz. In addition, it features a 3V linear voltage-controlled voltage from 0.4 to 2.9V and low power consumption of less than 8mA. It is the perfect solution to meeting high frequency applications within the specified frequency band and has a wide range of applications in aviation, defense, consumer electronics and digital TV/CATV.

Application Field

The primary application of the 353LB3C38CT oscillator is in commercial broadband wireless communication systems and digital television. With its high frequency stability, low noise levels and wide frequency range, it can be used in radio transmitters, receivers, amplifier systems, Base Transceiver Stations (BTS) and CATV modems. It can also be used as a high frequency reference clock in radio communication systems.

Working Principle

The 353LB3C38CT oscillator utilizes an on-chip, low-noise crystal resonator, along with an on-chip voltage-controlled oscillator (VCO) to drive the oscillator\'s output. The VCO is designed in such a way that it operates within the designated frequency range and can adjust the frequency output of the entire oscillator by applying a linear voltage to the VCO\'s control voltage. The VCO is then coupled with the external resonator, resulting in a harmonic relationship between the VCO and the external crystal resonator. The output signal is then filtered by the on-chip filter to produce a single clean, stable output signal.

In order for the oscillator to operate, the oscillation frequency must be tuned to the expected frequency through the VCO\'s control voltage. The actual frequency can be accomplished by connecting a DC power source to the oscillator\'s control voltage and a reference oscillator, such as a SAW oscillator, to the oscillation input terminals. The oscillator\'s control voltage is then adjusted to fine-tune the frequency output until the desired frequency range is achieved.

The output of the 353LB3C38CT oscillator is a clean, low noise output at frequencies below 2750 MHz. This allows the oscillator to operate in broadband systems with low frequency noise levels and allow for the best possible performance of the system.

The 353LB3C38CT oscillator is a powerful, highly stable, low noise device suitable for a wide range of applications. With its low power consumption, wide frequency range and low noise levels, it is the ideal choice for a variety of communication system needs.