SIT9005ACR1G-28DD

Frequency Stability:	±20ppm, ±25ppm, ±50ppm
Height:	0.030" (0.76mm)
Size / Dimension:	0.098" L x 0.079" W (2.50mm x 2.00mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	6.5mA
Spread Spectrum Bandwidth:	-1.04%, Down 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: SIT9005ACR1G-28DDProgrammable oscillators have been an invaluable tool in applications requiring an adjustable, repeatable output frequency. An on-board microcontroller allows the oscillator to be programmed to a desired frequency with a simple line command in an initialization phase. This makes it easy to couple the oscillator with its intended application in a very controlled manner to achieve optimal performance. The SIT9005ACR1G-28DD is a Programmable Oscillator from SiTime, a leading provider of silicon MEMS technology solutions. In this article, we will explore the application field and working principle of the SIT9005ACR1G-28DD programmable oscillator.ApplicationsThe SIT9005ACR1G-28DD is an ideal solution for applications in industrial, communication, home appliance, and automotive sectors. It is most commonly used in applications such as frequency synthesis, microcontroller clock synchronization, system-level timing, clock synchronization and measurement systems, and embedded systems. The SIT9005ACR1G-28DD is UL/CSA-certified with low jitter performance and high quality, making it perfect for applications where tight timing is needed.The SIT9005ACR1G-28DD is designed to provide a cost-effective and reliable solution for applications in various industrial sectors, providing a wide variety of features that make it suitable for a wide range of applications:• High reliability: The SIT9005ACR1G-28DD is constructed with a high-reliability ceramic package that is resistant to shock, vibration, and harsh environments.• High precision: The SIT9005ACR1G-28DD provides a precision of +-0.25 PPM, which makes it suitable for highly accurate frequency output and timing.• Wide frequency range: The SIT9005ACR1G-28DD can be programmed to generate a variety of frequencies, ranging from 0.05 MHz to 400 MHz.• Low power consumption: The SIT9005ACR1G-28DD utilizes On-Chip Power Reduction (OCPR) technology, which significantly reduces power consumption in the device, even under high load.• Easy integration: The SIT9005ACR1G-28DD is designed to be easily integrated into any system, with a simple command set for setting the desired frequency.Working PrincipleThe SIT9005ACR1G-28DD uses SiTime’s MEMS oscillator technology to achieve a high level of precision and reliability. The MEMS oscillator technology includes a piezoelectric-driven MEMS resonator which is oscillated by voltage from an on-chip charge pump. The resonator is set to a certain frequency of operation through a precisely tuned resonator network, and the frequency can be adjusted with the charge pump voltage.The SIT9005ACR1G-28DD integrates a clock and a microcontroller to enable programming. The microcontroller allows the frequency of the oscillator to be programmed through a command set, by providing the voltage to the charge pump. It can also be programmed to generate several simultaneous output frequencies, and can be triggered by an external signal.The SIT9005ACR1G-28DD offers a low jitter performance of less than 10 picoseconds. This ensures that the output frequency is well-defined and will remain reliable for a long period of time. Additionally, it is UL/CSA-certified, making it suitable for use in harsh environments.ConclusionThe SIT9005ACR1G-28DD programmable oscillator is a versatile solution for applications in industrial, communication, home appliance, and automotive sectors. It is designed to provide a cost-effective, reliable, and precise solution for a wide range of applications. It utilizes MEMS oscillator technology for high reliability and precision, with a wide frequency range and low power consumption. The microcontroller allows the frequency to be programmed, and the oscillator can generate multiple output frequencies simultaneously. Finally, it is UL/CSA-certified, making it suitable for use in harsh environments.

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