ABLNO-155.520MHZ-T

Series:	ABLNO
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	XO (Standard)
Frequency:	155.52MHz
Function:	--
Output:	LVCMOS
Voltage - Supply:	3.3V
Frequency Stability:	±18ppm
Operating Temperature:	-40°C ~ 85°C
Current - Supply (Max):	40mA
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	4-SMD, No Lead
Size / Dimension:	0.563" L x 0.343" W (14.30mm x 8.70mm)
Height - Seated (Max):	0.217" (5.50mm)
Current - Supply (Disable) (Max):	--

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Oscillators

Oscillators are devices that produce a continuous steady-state output signal in the form of a repeating waveform for various applications, such as radio transmitting and receiving, radar, and precision instrumentation. One type of oscillator, the ABLNO-155.520MHZ-T, is a high-frequency voltage-controlled oscillator (VCO) based on Gilbert cell technology. This article will discuss the applications and working principles of the ABLNO-155.520MHZ-T.

Applications

The ABLNO-155.520MHZ-T is designed for use in various radio and communication systems in commercial, industrial, and military applications. Specifically, it is designed for wideband buffer amplifiers, IF gain control circuits, PLL loops, clock and data recovery systems, local oscillators, and arbitrary waveform synthesis applications.

Working Principle

The ABLNO-155.520MHZ-T is based on a Gilbert cell topology. This type of VCO is composed of two cascaded inverters and a differential amplifier, connected to a voltage-controlled tank circuit at the output. The differential amplifier is used to detect the output voltage of the tank circuit and generate an error voltage in response, which is fed back to the two inverters. This negative feedback induces a resonant condition in the tank circuit and locks the frequency of the oscillator.The gain of the oscillator is determined by the transconductance of the differential amplifier. This transconductance can be adjusted externally by applying a control voltage to the input of the oscillator, allowing the frequency of the output signal to be adjusted over a wide range. The low-noise performance of the oscillator is achieved through the implementation of high-quality active components.

Conclusion

The ABLNO-155.520MHZ-T is a voltage-controlled oscillator based on Gilbert cell technology, designed for wideband buffer amplifiers, IF gain control circuits, PLL loops, clock and data recovery systems, local oscillators, and arbitrary waveform synthesis applications. It operates by utilizing a differential amplifier to detect the output voltage of the tank circuit and generate an error voltage in response, which is fed back to the two inverters and locks the frequency of the oscillator. The gain of the oscillator is determined by the transconductance of the differential amplifier, which can be adjusted externally, and the low-noise performance of the oscillator is achieved through the implementation of high-quality active components.

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