633P148A6A3T

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	--
Height - Seated (Max):	0.039" (1.00mm)
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
Package / Case:	6-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	88mA
Operating Temperature:	-10°C ~ 60°C
Series:	633
Voltage - Supply:	3.3V
Output:	LVPECL
Function:	Enable/Disable
Frequency:	148.3516MHz
Type:	XO (Standard)
Base Resonator:	Crystal
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Oscillators

Oscillators are electronic or mechanical devices used to generate periodic, repetitive signals. Oscillators can also be used as frequency sources for electronic devices such as amplifiers, filters, and transducers, as well as for data transmission and control systems.The 633P148A6A3T application field and working principle is an example of this. This particular oscillator operates using two independent voltage controlled oscillators (VCOs) that produce periodic waveforms at their output terminals. The first VCO is referred to as the ‘master’, and can be set to produce a sawtooth or triangular waveform which controls the frequency of the second ‘slave’ VCO. The slave VCO is used to generate the actual output signal, which can be tuned to different frequencies using the corresponding frequency control knobs. The output waveforms of the two VCOs are then combined in a sine-wave mixer to provide a well-shaped sine-wave as the output.The main function of the 633P148A6A3T oscillator is to provide frequency stability over a wide range of conditions. This is achieved by using two VCOs to form a three-stage phase-locked loop (PLL), which ensures that the output frequency does not drift when the reference frequency (VCO 1) or output frequency (VCO 2) changes. The use of PLL circuitry also ensures the oscillator can provide low-noise and low-distortion operation – an important consideration in high-precision applications.Another key feature of the 633P148A6A3T is its high slew rate – a measure of how quickly the output frequency can be changed. This is regardless of the magnitude of the frequency change, giving the oscillator both wide frequency range and high frequency agility. This is particularly useful in static and low-power applications as it eliminates the need for limiting the amount of frequency change that can be applied to the output.Lastly, the 633P148A6A3T features a wide dynamic range (WDR), which represents the ratio between the maximum and minimum frequencies of the output signal. The WDR is linked to the size of the voltage swing which is used to control the output frequency, meaning that larger voltage swings can be used to create even wider dynamic ranges. This will allow for better tuning performance, since the oscillator will be able to maintain its frequency and amplitude over a range of conditions.Overall, the 633P148A6A3T oscillator is well-suited to applications where high frequency stability, low noise and distortion, wide frequency range and high frequency agility are key requirements. It is an ideal choice for a wide range of static and low-power applications, ranging from digital communications to data acquisition and embedded control systems.

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