SIT9005ACL1G-XXDH

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Programmable oscillators are often used to generate various accurate frequencies for various applications. SIT9005ACL1G-XXDH is a type of programmable oscillator, capable of accurate frequency generation over a wide range of operating temperature. It is also equipped with digital output capability.

Description

SIT9005ACL1G-XXDH is a programmable oscillator. It is a low-power, single-output, voltage-controlled oscillator (VCO) that is designed to replace the conventional ceramic resonator in most applications. This oscillator can generate up to five programmable frequencies with a frequency step of 7.75kHz. It is mainly used in frequency control applications such as frequency synthesisers, frequency counters, frequency dividers and clock sources.

Features

SIT9005ACL1G-XXDH\'s key features include:

• High frequency accuracy - typically ±0.1% over a temperature range of +25~+85°C
• High noise isolation - typically provides 130 dBc effective isolation at 20 kHz
• Low power consumption - typically consumes less than 7 mW of power
• Wide input voltage range - accepts 3.0 V to 3.6 V DC supply
• Accurate frequency range - generates frequency up to 120.7 kHz

Advantages

SIT9005ACL1G-XXDH has many advantages over conventional ceramic resonators. It is ideal for low-power applications where high accuracy and low-power consumption are required. It offers better system cost savings than traditional resonators, with lower component count, eliminating the need for additional components like regulators, buffers, and pullup resistors.Furthermore, SIT9005ACL1G-XXDH provides high noise isolation, reducing interference and improves noise immunity. It has low intrinsic jitter, meaning it is capable of producing a very accurate signal over a wide range of temperatures.

Applications

The SIT9005ACL1G-XXDH is an ideal solution for a wide range of applications such as, but not limited to:

• Electric Automation - Frequency Synthesizers
• Wireless Audio - FM Radio Applications
• Digital Video Broadcasting (DVB) of TV, Radio, and Data
• Wireless LAN or Wi-Fi
• Digital Audio Broadcasting (DAB)

Working Principle

SIT9005ACL1G-XXDH consists of a voltage controlled oscillator (VCO), digital control logic and a temperature compensator. The oscillator is a linear design that employs a temperature compensated Crystal as its reference. The oscillator can produce different frequencies depending on the voltage of the control signal.

The digitally controlled logic determines the frequency of the VCO. The temperature compensator ensures the oscillator output is still accurate at temperatures ranging from +25 to +85°C.

The SIT9005ACL1G-XXDH is tuned using a one-time software tuning procedure, which requires a programming device. Once the tuning is completed, the VCO can be used to generate stable oscillations with little drift.

Conclusion

The SIT9005ACL1G-XXDH Programmable Oscillator is a low-power, highly accurate, and wide temperature range voltage-controlled oscillator. The oscillator is ideal for low-power applications requiring high accuracy and low-power consumption, as well as wide temperature range stability. It offers better system cost savings than traditional resonators, with lower component count and improved noise isolation than ceramic resonators. The SIT9005ACL1G-XXDH is used in frequency control applications such as frequency synthesisers, frequency counters, frequency dividers, and clock sources.

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