SIT1602BI-12-XXE-40.500000E

Frequency Stability:	±25ppm
Current - Supply (Disable) (Max):	4.2mA
Height - Seated (Max):	0.032" (0.80mm)
Size / Dimension:	0.098" L x 0.079" W (2.50mm x 2.00mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	4.5mA
Operating Temperature:	-40°C ~ 85°C
Absolute Pull Range (APR):	--
Series:	SiT1602B
Voltage - Supply:	2.25 V ~ 3.63 V
Output:	HCMOS, LVCMOS
Function:	Enable/Disable
Frequency:	40.5MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

 The SIT1602BI-12-XXE-40.500000E is an oscillator providing a precise frequency of 40.5 MHz. It is classified as a type of electronic oscillator in which the precision of the signal is generated in a way that the ratio of the frequency divided by the waveform is always a constant value. Its application field and working principle will be the focus in this article.

Application Field

 The SIT1602BI-12-XXE-40.500000E oscillator can be applied in the fields where an accurate and continuous frequency is required, such as communication systems. In a view of radio communication, the SIT1602BI-12-XXE-40.500000E can be used as a local oscillator to generate the reference signal for a heterodyne receiver, which requires a known and stable reference frequency. Moreover, this type of oscillator is also widely used in various other applications such as clock and timer circuits where a fixed frequency is desired, measurement and test equipment, microprocessor and digital logic circuits and high precision resonant instrumentation.

Working Principle

 The SIT1602BI-12-XXE-40.500000E operates based on the principle of electronic oscillation. This type of oscillator, unlike linear oscillators, constantly maintain its oscillation frequency, determined by its resonant tank circuit, which is composed of an inductor and a capacitor, over a wide range of power and operation temperature. The frequency of oscillation is determined by the electrical components’ values and the relationship between them. At the initial startup of the SIT1602BI-12-XXE-40.500000E oscillator, a large current will initiate the oscillation. The current will induce a voltage drop across the inductor, and charge the capacitor. Alternately, the oscillator changes between the charging and discharging periods in each cycle, and produces an oscillating waveform based on the piezoelectric effect, meaning that the electric potential difference between two different states changes the dipole moment. This effect then creates oscillating electric field across the electrical components incorporated in the circuit, which completes the oscillating cycle.

Conclusion

 In conclusion, the SIT1602BI-12-XXE-40.500000E can be classified as a type of oscillator whose application field involves the precision of frequency generation. Its application includes radio communication, clock and timer, microprocessors, digital logic circuits and high precision resonant instrumentation. Its working principle relies on the oscillating effect caused by the piezoelectric effect based on the electrical components’ values.  

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