SIT1602BC-81-28N-28.636300Y

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	--
Height - Seated (Max):	0.039" (1.00mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	4.5mA
Operating Temperature:	-20°C ~ 70°C
Absolute Pull Range (APR):	--
Series:	SiT1602B
Voltage - Supply:	2.8V
Output:	HCMOS, LVCMOS
Function:	--
Frequency:	28.6363MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Oscillators

SIT1602BC-81-28N-28.636300Y application field

SIT1602BC-81-28N-28.636300Y is a high precision, low cost voltage controlled oscillator (VCO) that can be used in a wide range of applications, from telecommunications and instrumentation to wireless communication networks. Its integrated phase-locked loop (PLL) provides stable frequency control for frequencies from low-KHz to high-MHz, with excellent phase and frequency stability over temperature. This VCO provides superior linearity and low-noise performance across a variety of conditions, making it a popular choice for any application that requires precision frequency, low phase noise and tight control.

Working principle of SIT1602BC-81-28N-28.636300Y

The working principle of SIT1602BC-81-28N-28.636300Y hinges on the concept of negative resistor feedback. This negative resistance is generated by current injection into the VCO core, making the current/voltage relationship non-linear and providing a stable frequency output. The negative resistor feedback loop increases the stability of the oscillator, decreasing its susceptibility to external noise sources and improving the overall accuracy of the system.When the current is injected, it creates a decrease in output voltage from the VCO, generating a negative resistance. This negative resistance creates a negative voltage at the output of the VCO, re-stabilizing the frequency and improving the precision of the output signal. This oscillatory behaviour begins to build and form an oscillator circuit as a result.The SIT1602BC-81-28N-28.636300Y also incorporates a PLL to improve phase noise and frequency stability. The PLL serves to average the frequency variations in the signal, thus providing a more accurate and precise output. The PLL also serves to reduce the effect of external noise, making the oscillator more resilient in operation.

Conclusion

The SIT1602BC-81-28N-28.636300Y is an excellent VCO for applications requiring precision frequency control in environments with high temperature and harsh environmental conditions. Its negative resistor feedback loop, along with its integrated PLL, provide excellent frequency, phase and noise performance for maximum accuracy. This makes it an ideal choice for wireless communication networks, instrumentation systems, and different kinds of telecommunications applications.

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