SIT8924AAB32-33E-27.000000T

Frequency Stability:	±25ppm
Current - Supply (Disable) (Max):	--
Height - Seated (Max):	0.032" (0.80mm)
Size / Dimension:	0.197" L x 0.126" W (5.00mm x 3.20mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	AEC-Q100
Current - Supply (Max):	4.8mA
Operating Temperature:	-40°C ~ 125°C
Series:	SiT8924
Voltage - Supply:	3.3V
Output:	LVCMOS, LVTTL
Function:	Enable/Disable
Frequency:	27MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction

Oscillators are key components in electronic circuits, providing a repetitive waveform of a certain amplitude and frequency, used for timing and synchronization in all kinds of modern electronic devices. SIT8924AAB32-33E-27.000000T is a type of oscillator that’s extensively used in various fields, and its working principle and application are described in this article.

Structure and Principle

SIT8924AAB32-33E-27.000000T is a relaxation oscillator featuring a negative resistance device, which is usually a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), connected in series with a resistor. This oscillator consists of four RC networks connected in various ways. It has an output stage, a reset switch, a timer circuit, and an input stage. The way the oscillator works is very simple. The reset switch, when it’s open, allows current to flow through the resistor and to charge the Capacitor C1. The capacitor is connected in series with the resistor and the MOSFET in such a way that the voltage charge on it begins to go up. When the voltage reaches a certain threshold, the MOSFET switches state and allows the current to drain away from the Capacitor C1, so the voltage charge begins to go back to zero. When the voltage reaches zero, the cycle starts again, and this process repeats itself continually, providing an oscillating waveform of a known frequency. The frequency is determined by the sum of the resistor and capacitor values.

Application

SIT8924AAB32-33E-27.000000T is widely used in a variety of applications, such as clock generation, signal modulation, vibration control, and timing control. In clock generation, it can be used as an oscillator to generate high-precision frequency signals of a certain rate for synchronizing data communication and providing a reference clock for microprocessors. In signal modulation, it can be used in radio or television receivers to demodulate a signal into a series of pulses, whose frequency is the same as the signals frequency. By comparing the frequency of these pulses to a reference signal, it is possible to recover the original signal. In vibration control, it can be used to reduce the unwanted vibrations of an appliance by introducing a specific frequency that cancels out the unwanted frequency. In timing control, it can be used in a variety of electronic appliances, such as timers and watches, to control the running of machinery or equipment by providing a precise timing signal.

Conclusion

SIT8924AAB32-33E-27.000000T is a type of oscillator, featuring a negative resistance device, four RC networks, timer circuit, and reset switch. Due to its wide usage, robust design, and low power consumption, it’s widely used in a variety of applications, such as clock generation, signal modulation, vibration control, and timing control.

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