SIT8009BIU21-33N

Frequency Stability (Total):	±20ppm
Current - Supply (Disable) (Max):	4.2mA
Height:	0.032" (0.80mm)
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	7.5mA
Spread Spectrum Bandwidth:	--
Operating Temperature:	-40°C ~ 85°C
Series:	SiT8009B
Frequency Stability:	±20ppm
Voltage - Supply:	2.97 V ~ 3.63 V
Output:	HCMOS, LVCMOS
Function:	--
Available Frequency Range:	115MHz ~ 137MHz
Programmable Type:	Programmed by Digi-Key (Enter your frequency in Web Order Notes)
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active

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Programmable Oscillators

Oscillators are circuits, systems or devices used in the production of oscillatory or cyclic electrical or other physical signal forms. An oscillator is typically a system which generates, modulates, or maintains a waveform, they are increasingly used in the electronic industry. This essay will focus on the SIT8009BIU21-33N Programmable Oscillator, describing the application field and working principle. The SIT8009BIU21-33N is a fixed-frequency Programmable Oscillator with an integrated voltage-controlled low-frequency oscillator (VCXO), crystal, temperature-compensating circuit, and clock frequency divider. This device uses a hybrid integration technology, combined with an on-chip voltage regulator to ensure stable performance and maximum frequency accuracy. The SIT8009BIU21-33N features an ultra-low power consumption of less than 2.3mA in standby mode, and has a wide output frequency range of 2MHz to 80MHz, making it highly suitable for applications with limited power supply capabilities. The SIT8009BIU21-33N can be used in a variety of areas such as communications, computers, consumer audio devices, and microcontrollers. In communications, the VCXO of the SIT8009BIU21-33N provides reliable stability and low jitter for high frequency applications, supporting data rates up to 10Gbps. In computers, its high frequency range ensures excellent clock signal accuracy at lower power consumption, making it an ideal device for mobile and wearable computing applications. In consumer audio devices, its stable performance ensures better audio quality and a wider range of achievable frequencies. Additionally, its wide range of programmable frequency settings enable the user to customize their own frequencies and settings to achieve the desired audio effects. Finally, microcontrollers are capable of accurately controlling the clock frequencies of the SIT8009BIU21-33N, greatly reducing the development cost and time. The working principle of the SIT8009BIU21-33N revolves around an integrated voltage-controlled oscillator (VCXO), crystal, temperature-compensating circuit, and clock frequency divider. Firstly, an AC voltage is applied to the VCXO, which in turn generates a sinusoidal waveform at a fixed frequency. The output of the VCXO is then passed through a temperature-compensating circuit to correct any frequency shifts caused by environmental factors, such as temperature. The output of the temperature-compensating circuit is then sent to a clock frequency divider, which is adjustable by an external resistance. This enables the user to control the output frequency of the device by changing the external resistance. The output of the clock frequency divider is finally passed through a buffer circuit to provide a clean and stable output signal. In conclusion, the SIT8009BIU21-33N programmable oscillator is an ideal choice for applications with limited power supply capabilities. Its wide range of output frequency, low power consumption, and stability make it well suited for a wide range of applications, such as communications, computers, consumer audio devices and microcontrollers. The working principle of this device is based on an integrated voltage-controlled oscillator (VCXO), crystal, temperature-compensating circuit, and clock frequency divider, which enables precise frequency control.

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