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Programmable Oscillators

Introduction

Programmable Oscillators strive to bridge the gap between cost and performance in today’s cost conscious, environment where innovation and complexity are increasing. Programmable oscillators are used to generate electronic signals with frequencies that can vary within a certain range. They are widely employed in various electronic devices such as mobile phones, radio frequency (RF) circuits, electronic test equipment, security systems and display control circuits.

SIT9005ACB1G-25EN application field and working principle

The SIT9005ACB1G-25EN is a highly integrated, high-performance and low-power-consumption programmable oscillator chip that utilizes advanced and proven Silicon integrated technology. It offers full-frequency and process control while remaining reliable and stable, allowing service life-cycle management, product revisions and field upgrades in a single device.

The chip provides excellent frequency stability and frequency accuracy, as well as low jitter, making it ideal for a variety of precision timing applications, such as Bluetooth and Wi-Fi applications, medical instruments, automotive electronics, and industrial applications.

The SIT9005ACB1G-25EN is powered by a tiny voltage regulator, so a wide range of input voltage from 1.2V to 5.5V is supported.The chip features a simple programming interface for easy and fast adjustment of the operating frequency and operating parameters.

The SIT9005ACB1G-25EN uses a designed Phase Locked Loop (PLL) architecture which combines an array of variable voltage-controlled oscillator (VCO) cells, low-noise digital CMOS logic, and an integrated circuit (IC). This allows the chip to generate a wide narrow-band frequency range, with the tuning resolution of 1 kHz step.

In addition, the SIT9005ACB1G-25EN contains a Dual Edge Trigger (DET) that provides two output signals at two different transition points. The DET feature enables simultaneous sampling and synchronization of different analog signals to ensure the precision of the timing parameters.

The SIT9005ACB1G-25EN also features a Power Down Mode, giving the user the ability to place the chip in low power state or to power off the chip without needing any external control. This helps to minimize the power consumption and improve the system performance. The chip also provides an Overtemperature Protection function which can be used to protect the chip from being damaged due to over temperature.

Conclusion

The SIT9005ACB1G-25EN chip is the ideal solution for applications requiring a programmable oscillator that can easily adjust the frequency without an external control. It offers excellent frequency stability and accuracy, low jitter, and low power consumption, making it suitable for a wide range of timing applications.

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