SIT8008BIT7-18E

Frequency Stability:	--
Current - Supply (Disable) (Max):	4mA
Height:	0.031" (0.79mm)
Size / Dimension:	0.079" L x 0.063" W (2.00mm x 1.60mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	4.1mA
Spread Spectrum Bandwidth:	--
Operating Temperature:	-40°C ~ 85°C
Frequency Stability (Total):	±20ppm
Series:	SiT8008B
Voltage - Supply:	1.8V
Output:	LVCMOS
Function:	Enable/Disable
Available Frequency Range:	1MHz ~ 110MHz
Programmable Type:	Programmed by Digi-Key (Enter your frequency in Web Order Notes)
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tube

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Programmable Oscillators

Oscillators are used in many different devices, from computers to portable music players, to generate a periodic signal for various applications. Programmable oscillators are a specific type of oscillator that is programmable, meaning their output frequency and other parameters can be dynamically changed. One example of a programmable oscillator is the SIT8008BIT7-18E.

Application Field

The SIT8008BIT7-18E is designed to be used in the following general applications:* Clocks and timing circuits – It can be used to generate a signal of a specific frequency to be used as a clock signal in digital circuits.* Embedded systems designs – It can be used to generate a signal of a specific frequency as a clock signal for an embedded system, as well as for various other timing and interface applications.* RFID and short-range wireless communication – This oscillator can be used in the design of circuits that incorporate RFID technology or short-range wireless communication devices.* Digital signal processing (DSP) – The SIT8008BIT7-18E can be used to generate a signal of a specific frequency for DSP applications.* Aerospace and defense – The oscillator can be used in aerospace and defense applications, such as in the design of numerous communication, navigation, and guidance systems.

Working Principle

The SIT8008BIT7-18E programmable oscillator is an integrated component that combines both an oscillator and controller in one package. An external crystal is used to set the desired frequency range, while an analog voltage control and a single-wire digital interface are used to program the frequency and output characteristics of the oscillator.The oscillator uses a Pierce oscillator based on a bipolar junction transistor (BJT) to generate the output signal. The BJT is modulated by current, which is supplied by the voltage-controlled current source. The voltage-controlled current source is controlled by an analog voltage whose range is specified within the datasheet. This voltage can be programmed externally to change the frequency of the output signal.Additionally, the oscillator has an on-chip programmable divider which is connected to the controller. The divider can be programmed externally to divide the output frequency of the oscillator. The output signal frequency can also be changed by adjusting the external capacitor.The SIT8008BIT7-18E oscillator is an excellent choice for a wide variety of digital and analog applications. Its on-chip programmable divider and voltage-controlled current source make it an especially attractive option for applications that require a dynamically adjustable signal frequency.

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