SIT9120AC-1D-25S

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	100µA
Height:	0.039" (1.00mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Package / Case:	6-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	69mA
Spread Spectrum Bandwidth:	--
Operating Temperature:	-20°C ~ 70°C
Frequency Stability (Total):	--
Series:	SiT9120
Voltage - Supply:	2.5V
Output:	LVPECL
Function:	Standby
Available Frequency Range:	25MHz ~ 212.5MHz
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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Programmable Oscillators

Programmable Oscillators provide a means to tailor frequency output and timings to tight set requirements. The SIT9120AC-1D-25S Oscillator is a highly tunable programmable oscillator designed specifically for communications and system applications. This oscillator integrates a MEMS resonator and components, combining extreme accuracy and high stability while using a minimal amount of board space. This oscillator is used in many applications such as: sampling clocks, communication systems, mobile devices, frequency filters, switching power supplies, and communication interface systems.

SIT9120AC-1D-25S Configuration Options

The SIT9120AC-1D-25S features a highly programmable digital core and extremely low power consumption. It also features an on-board digital control loop with a two-wire serial bus interface compatible with popular industries standards, such as I2C and SPI. The oscillator provides a digital tuning range that covers a frequency range from 32 kHz to 250 MHz. Since the oscillator is programmable, the user can configure it with the desired frequency using an I2C or SPI interface.

Working Principle of the SIT9120AC-1D-25S

The SIT9120AC-1D-25S uses an oscillator circuit based on a MEMS resonator. The MEMS resonator consists of a silicon micro-machined small oscillating structure that relies on a combination of mechanical, electrical and dynamic characteristics. The MEMS resonator is integrated with a temperature stabilized oscillator circuit, a programmable digital control circuitry, as well as a crystal and an on-chip voltage regulator. This creates a highly efficient and accurate frequency synthesizer for low-power applications.The SIT9120AC-1D-25S utilizes the Resonant Circuit Synthesis (RCS) technology that shifts the frequency of the MEMS resonator from its natural frequency to the desired frequency. The desired frequency is synthesized by applying a digital control signal to the resonator-control circuit. This technique provides frequency tuning in high resolution over a wide frequency range and very low spurious emission noise.

Features & Benefits of the SIT9120AC-1D-25S

The SIT9120AC-1D-25S offers a range of features that make it ideal for certain communication and system applications. The main feature of this oscillator is its low power consumption, which makes it perfect for mobile devices, where battery life is critical. Other benefits of this oscillator include:

• High frequency stability and accuracy - The SIT9120AC-1D-25S is capable of providing precise and frequency tuning over a wide range of frequencies, making it ideal for frequency dependent applications.
• Extremely low power consumption - The oscillator requires very little power in order to run, making it ideal for battery powered applications that require precise frequency control.
• Integrated digital control loop - The programmable digital control circuitry provides precise frequency tuning, allowing users to tune the oscillator to a specific frequency.
• Compact size - The oscillator is extremely compact, allowing it to fit into small spaces without sacrificing performance.

Applications of the SIT9120AC-1D-25S

The SIT9120AC-1D-25S is suitable for a wide range of applications in the fields of communication, sampling clocks, frequency filters and communication interface systems. In these applications, its precise frequency tuning and low power consumption makes it an ideal choice.One of the most common applications for this oscillator is in the communications industry, where precise and controlled frequencies are needed for mobile devices, for example. Its low power operation and on-board digital control loop ensures that it can fit easily into mobile devices with restricted space.In addition, the SIT9120AC-1D-25S Programmable Oscillator is also popular in applications such as sampling clocks and frequency filters. The precise frequency tuning allows these applications to be carried out with extreme accuracy and efficiency.Finally, the oscillator is also used in communication interface systems. Its low power operation and accurate frequency tuning allows it to interface with communications systems without sacrificing performance.

Conclusion

The SIT9120AC-1D-25S Programmable Oscillator is a highly useful and reliable programmable oscillator designed specifically for communications and system applications. It offers a range of features and benefits such as precision frequency tuning, low power operation and a small form factor. These features make it well suited for applications in the fields of communication, sampling clocks, frequency filters and communication interface systems.

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