377LB5I1000T

Absolute Pull Range (APR):	±50ppm
Current - Supply (Disable) (Max):	10µA
Height - Seated (Max):	0.079" (2.00mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Package / Case:	6-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	55mA
Operating Temperature:	-40°C ~ 85°C
Series:	377
Frequency Stability:	±25ppm
Voltage - Supply:	3.3V
Output:	LVDS
Function:	Enable/Disable
Frequency:	100MHz
Type:	VCXO
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Oscillators: 377LB5I1000T Application Field and Working Principle

Oscillators are electrical circuits that are capable of generating repetitive electric signals, called oscillations or vibrations. They are widely used in numerous applications requiring periodic control signals, such as in the field of radio transmission and reception. The 377LB5I1000T is an oscillator that is mainly designed for applications in broadcast and narrowband radios. It offers a high performance continuous oscillation without overshooting or ringing at its output, can produce frequencies ranging from 50M to 1000M Hz, and has injection locking and pulling capabilities that makes it suitable for use in synthesizers, mixers, and local oscillators. This article explores the application field and working principle of the 377LB5I1000T.

Application Field of the 377LB5I1000T

The 377LB5I1000T oscillator is mainly used in broadcast and narrowband radios for the production of a stable oscillator signal. It is employed in the production of signal sources for audio and video generation. It is also used in televisions to produce stable signals for the synchronization of horizontal and vertical blanking signals, and to generate stable standard synchronizing and chrominance signals. The 377LB5I1000T is also suitable for use in frequency synthesizers, mixers and local oscillators.

Working Principle of the 377LB5I1000T

The working principle of the 377LB5I1000T is based on the concept of positive feedback (also known as regenerative feedback). In this type of feedback, the output signal is fed back to the input in such a way that it amplifies the original signal. This creates a closed loop circuit, whereby the output signal is continuously amplified and fed back to the input, creating an oscillating signal.The 377LB5I1000T consists of an oscillating core circuit and an on-chip frequency synthesizer, which works together to produce a continuously stable oscillating signal. The oscillation core consists of two sections, an amplifier and a frequency-controlling circuit. The on-chip frequency synthesizer is responsible for controlling the oscillation core’s frequency, by producing a predefined stable output frequency range.The oscillation core functions as follows. The input signal is amplified and fed to the frequency-controlling circuit, which results in a periodic output signal. This output signal is integrated before it is fed back to the amplifier and amplified again. The amplified signal is then fed back to the frequency-controlling circuit where it is again integrated before being returned to the amplifier. This creates a continuous loop, whereby the output signal is continuously amplified and fed back to the frequency-controlling circuit, thus producing a stable and repeatable output signal.

Conclusion

The 377LB5I1000T oscillator is a high-performance oscillator that is mainly designed for use in broadcast and narrowband radios. It offers a range of frequencies from 50M to 1000M Hz, and has injection locking and pulling capabilities. In addition to its use in broadcast and narrowband radios, the 377LB5I1000T is also suitable for use in synthesizers, mixers, and local oscillators. The working principle of the 377LB5I1000T is based on the concept of positive feedback, whereby the output of an amplifier is fed back to itself and amplified again in a continuous loop. This creates a stable and repeatable output signal.

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