SIT9005ACL2H-28DL

Frequency Stability:	±20ppm, ±25ppm, ±50ppm
Height:	0.030" (0.76mm)
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):	6.5mA
Spread Spectrum Bandwidth:	±1.545%, Center Spread
Operating Temperature:	-20°C ~ 70°C
Frequency Stability (Total):	--
Series:	SIT9005
Voltage - Supply:	2.8V
Output:	LVCMOS
Function:	--
Available Frequency Range:	1MHz ~ 141MHz
Programmable Type:	Programmed by Digi-Key (Enter your frequency in Web Order Notes)
Type:	SSXO
Base Resonator:	MEMS
Part Status:	Active

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Programmable Oscillators: SIT9005ACL2H-28DL Application Field and Working Principle

Programmable oscillators are designed to provide greater operational accuracy and flexibility in microprocessor-based systems. The ability to quickly and easily adjust and customize an oscillator\'s parameters and functionality makes it a great choice for applications where changing frequencies is necessary, such as in radio frequency (RF) communications systems. One such programmable oscillator is the SIT9005ACL2H-28DL, which offers the added benefits of improving precision, stability and reliability.The SIT9005ACL2H-28DL is specifically designed for use in RF communications systems and is capable of providing clock signals to a variety of radio frequency circuitry. It is also useful for applications that require synchronization between different sub-systems, and can be used as a precision timing reference for systems such as mobile radio networks, as well as LTE and Wi-Fi based systems. The SIT9005ACL2H-28DL is a low-power clock generator capable of supplying three LVCMOS signals with different frequencies, each output frequency is adjustable up to 100 kHz and the total range of programmable frequencies is 8 KHz - 100 MHz. The maximum jitter of the SIT9005ACL2H-28DL is less than 50 ps, making it an ideal choice for systems that require clean and accurate signal generation. The device features two sets of clock output pins that can simultaneously supply two LVCMOS signals, with adjustable frequency ranges relative to each other.The working principle of the SIT9005ACL2H-28DL is straightforward. The device uses a combination of a voltage-controlled oscillator (VCO) and a phase-locked loop (PLL) circuit to generate an accurate and stable clock signal at the desired frequency. The VCO is capable of producing signal frequencies from 8 KHz to 2.5 GHz, while the frequency range of the PLL is from 8 KHz to 100 MHz.The VCO is the primary source of the clock signal. It is controlled by an adjustable external voltage source, which is determined by the SIT9005ACL2H-28DL’s internal programmable registers. The variable voltage causes the frequency of the generated clock signal to vary over a certain range. The signal is then fed into the PLL circuit, which fine-tunes the signal’s frequency and phase, enabling the device to produce an accurate and stable clock signal. The SIT9005ACL2H-28DL also uses an external oscillator for reference, allowing the device to maintain its frequency accuracy over a wide temperature range. The IC contains an on-chip differential oscillator that is capable of generating two clock signals with a fixed ratio, making it easy to generate multi-phase clocks at a variety of frequencies. The output of the phase-locked loop is then fed into the programmable registers, which are used to set the desired frequency.In addition to its programmable frequency range, the SIT9005ACL2H-28DL is also designed to provide low power consumption and high temperature stability. The device is available in a range of power supply voltages, and its maximum operating voltage is 3.3 V. It features two power saving modes, allowing the device to consume less power when the clock demand is low. Also, with a temperature stability of 0.25 ppm/°C, the device can maintain its frequency accuracy over a wide temperature range.Overall, the SIT9005ACL2H-28DL is an excellent choice for applications that require precise frequency control and low power consumption. With its programmable frequency range and temperature stability, the device provides accurate and consistent time synchronization for a variety of radio frequency communication systems. By using a combination of a voltage-controlled oscillator and a phase-locked loop circuit, the device is able to generate accurate clock signals without compromising on power consumption.

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