SIT9003AC-1-18DD

Frequency Stability:	±50ppm
Current - Supply (Disable) (Max):	800nA
Height:	0.031" (0.79mm)
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):	3.5mA
Spread Spectrum Bandwidth:	±0.50%, Center Spread
Operating Temperature:	-20°C ~ 70°C
Frequency Stability (Total):	±50ppm
Series:	SiT9003
Voltage - Supply:	1.8V
Output:	LVCMOS, LVTTL
Function:	--
Available Frequency Range:	1MHz ~ 75MHz
Programmable Type:	Programmed by Digi-Key (Enter your frequency in Web Order Notes)
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Bulk

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Introduction

Programmable oscillators are precise timing devices used in a variety of precision timing, frequency control, and synchronization applications. They are available in several different configurations and provide different levels of accuracy, frequency range, resolution, and customization options. The Sitronix SIT9003AC-1-18DD is a programmable oscillator that combines a high-precision quartz crystal and an integrated circuit to enable dual-frequency and harmonic frequencies. This article provides an overview of the application fields, working principle and features of the SIT9003AC-1-18DD.

Application fields and Working principle

The primary application field of the SIT9003AC-1-18DD is for frequency accuracy enhancement, as well as synchronization, jitter reduction and overall signal conditioning. It is suitable for use in high-precision and high-reliability systems, such as communications, medical, industrial, automotive, and aviation applications. Furthermore, its programmable design makes it suitable for special purpose applications.The SIT9003AC-1-18DD uses a state-of-the-art CMOS (complementary metal-oxide-semiconductor) circuitry and a high-precision quartz crystal to generate dual output frequencies from a single device. It has the flexibility to be programmed to produce up to three output frequencies and provide a variety of harmonic frequencies from a single source. The output frequency can be programmed simply by adding external capacitance, which allows for a wide range of timing applications.The working principle of the SIT9003AC-1-18DD starts with the quartz crystal providing a very accurate base frequency. The quartz crystal oscillates at a defined frequency and is then divided by a programmable divider to achieve a desired output frequency. When an external capacitor is added to the oscillator circuit, it changes the frequency and the programmable divider adjusts the output frequency accordingly to retain the desired output frequency.

Features

The SIT9003AC-1-18DD features a range of advanced features and benefits that make it an attractive choice for timing, synchronization and signal conditioning applications. These features include:-High output frequency accuracy: The SIT9003AC-1-18DD has a frequency accuracy of ±100ppm at an ambient temperature of 25°C, making it ideal for precision timing applications. -Harmonic frequencies: The SIT9003AC-1-18DD has the ability to produce up to 750 MHz with a harmonic ratio of up to 1:4. It also has the capability to produce multi-harmonic frequencies up to 10th order.-Deterministic jitter: The SIT9003AC-1-18DD has an excellent jitter attenuation characteristic, making it well-suited for time-domain signal conditioning applications.-Programmable: The SIT9003AC-1-18DD can be programmed to generate different versions of output frequencies by loading external capacitors, making it highly adaptable to a variety of timing requirements.In conclusion, the SIT9003AC-1-18DD is an advanced programmable oscillator that combines a high-precision quartz crystal and integrated circuit to offer a wide range of features and benefits. It is ideal for applications that require high accuracy, frequency control and synchronization, such as communications, medical, industrial, automotive and aviation applications. The SIT9003AC-1-18DD is a versatile and highly configurable programmable oscillator that can be quickly and easily programmed to meet a wide range of timing requirements.

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