SIT9120AI-2B3-25S166.666660E

Frequency Stability:	±50ppm
Current - Supply (Disable) (Max):	35mA
Height - Seated (Max):	0.032" (0.80mm)
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):	55mA
Operating Temperature:	-40°C ~ 85°C
Absolute Pull Range (APR):	--
Series:	SiT9120
Voltage - Supply:	2.5V
Output:	LVDS
Function:	Standby (Power Down)
Frequency:	166.66666MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Oscillators are electronic devices used to generate electrical signals of a fixed frequency. The most commonly used oscillators are those based on the use of a capacitor and an inductor. The SIT9120AI-2B3-25S166.666660E is an oscillator which utilizes a capacitor and an inductor as its active components, and is capable of generating frequencies of up to 166.66660E Hertz.

Technology

The SIT9120AI-2B3-25S166.666660E utilizes a two-stage transistor switching circuit to generate its signal. The first stage consists of two MOSFET transistors, which are used to drive the current on the Inductor-Capacitor (LC) tank circuit to approximately two-thirds of the power supply voltage. The second stage consists of a pair of bipolar transistors, which are connected in a push-pull configuration. The output of the second stage is then directed back to the input of the first stage in order to maintain the oscillation.

Working Principle

The SIT9120AI-2B3-25S166.666660E works by ‘charging and discharging’ the inductor and capacitor of the LC tank circuit. When the capacitor is ‘charged’, the voltage across it rises, while the voltage across the inductor decreases. When the voltage on the capacitor reaches its peak, the transistor switches off, allowing the charge stored in the inductor to discharge through the transistors of the second stage. This causes the current flow in the circuit to reverse, and the capacitor to begin to discharge. This process repeats continuously, creating a continuous oscillating signal, which is then outputted from the device.

Application field

The SIT9120AI-2B3-25S166.666660E is most commonly used in applications that require a high-frequency signal source. This includes Frequency Modulation (FM) radio transmitters, television broadcast transmitters, and is also used in some home-theater systems. Additionally, it can be used in clock signals and timing circuits, and is ideal for applications such as gaming consoles and digital clocks.

Conclusion

The SIT9120AI-2B3-25S166.666660E is an oscillator which utilizes a two-stage transistor switching circuit to generate a fixed frequency signal up to 166.66660E Hertz. It is most commonly used in applications that require a high-frequency signal source, such as FM radio transmitters, television broadcast transmitters, and gaming consoles.

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