345LB5C1562T

Frequency Stability:	±25ppm
Current - Supply (Disable) (Max):	10µA
Height - Seated (Max):	0.055" (1.40mm)
Size / Dimension:	0.197" L x 0.126" W (5.00mm x 3.20mm)
Package / Case:	6-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	80mA
Operating Temperature:	-20°C ~ 70°C
Absolute Pull Range (APR):	±50ppm
Series:	345
Voltage - Supply:	3.3V
Output:	LVPECL
Function:	Enable/Disable
Frequency:	156.25MHz
Type:	VCXO
Base Resonator:	Crystal
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Oscillators

Oscillators are electronic pieces of circuitry that produce an oscillating signal, or repeating waveform. Oscillators are used in a wide variety of applications in the electronics industry, and a particular oscillator known as the 345LB5C1562T is interesting to discuss due to its unique application fields and working principle.The 345LB5C1562T oscillator is used in precision frequency-control applications, such as in communication receivers, cellular base stations, image processing circuits, and microwave systems. Its frequency range is from 30MHz to 80MHz, with a maximum phase noise of -153dBc/Hz, and a temperature range of -40°C to +85°C.The working principle of the 345LB5C1562T oscillator is based on a quartz crystal that is mounted inside the oscillator circuit. The quartz crystal vibrates at a precise frequency due to its piezoelectric property, and this frequency is used as the basic timekeeping signal for the oscillator. The oscillator circuit also includes a transistor which is used to amplify the signal from the quartz crystal.This signal is then applied to a feedback oscillator circuit, which further amplifies the signal and results in an oscillation at the frequency determined by the quartz crystal. The feedback oscillator circuit also includes other components such as resistors, capacitors, and diodes, which are used to stabilize and control the oscillation. The net effect of all of these components is to produce a clean, stable oscillating signal with minimal phase noise.The 345LB5C1562T oscillator also provides excellent jitter performance, featuring very low jitter measurements of 0.3ps RMS. This makes it ideal for use in high precision frequency-control applications, such as those mentioned earlier. Furthermore, the oscillator has a low supply current of 1.5mA, making it very power efficient and cost effective.In summary, the 345LB5C1562T oscillator is an ideal choice for applications that require high precision frequency-control and low jitter measurements. Its combination of low-cost, low power consumption, and robust performance make it an attractive choice for a variety of applications.

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