AX7PAF1-1200.0000C

Series:	Clearclock™ AX7
Packaging:	Strip
Part Status:	Active
Base Resonator:	Crystal
Type:	XO (Standard)
Frequency:	1.2GHz
Function:	Enable/Disable
Output:	LVPECL
Voltage - Supply:	3.3V
Frequency Stability:	±25ppm
Absolute Pull Range (APR):	--
Operating Temperature:	-40°C ~ 85°C
Current - Supply (Max):	94mA
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	8-SMD, No Lead
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Height - Seated (Max):	0.075" (1.90mm)
Current - Supply (Disable) (Max):	86mA

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Oscillators

Oscillators are electronic components that produce an alternating current, or AC, wave at a predetermined frequency. They are used for signal generation, timing, and synchronization purposes in many types of electronic systems, including radio and telecommunications, medical instruments, lasers, and surveillance systems. The AX7PAF1-1200.0000C is a type of oscillator which uses a phase-locked loop (PLL) and frequency synthesizer to produce high accuracy output signals, meaning the frequency of the output signal remains very close to the original target frequency.

Application Field

The AX7PAF1-1200.0000C can be used for applications from communications, computing, instrumentation, and control. It produces a stable AC output with a wide frequency range of 1MHz - 1.2GHz. The low phase noise of the oscillator, as well as its small form factor, make it ideal for use in RF and microwave applications such as communications, navigation, and radar. Additionally, its fast settling time of 200ns makes the device perfect for handsets such as mobile phones and tablet computers.

Working Principle

The oscillator works by using a transistor-based PLL and frequency synthesizer to match the output frequency with the target frequency quickly and accurately. This means the PLL is able to track the signal, and then use the feedback signal to adjust the reference divider ratio. This in turn helps to achieve the correct output frequency.The oscillator also has a built-in delta-sigma phase/frequency detector (PFD) which is used for the purpose of frequency synthesis. The PFD keeps track of the phase shift between the input and output of the PLL, allowing it to detect any frequency errors. This is beneficial since it ensures the output frequency is always accurate and close to the target frequency.The PLL also incorporates an Automatic Power Management (APM) circuit which can help to reduce power consumption, ensuring the device can operate for extended periods without any degradation in performance.

Conclusion

The AX7PAF1-1200.0000C is a versatile oscillator which has a wide range of applications from communications to computing, and a range of features such as low phase noise, fast settling time, and Automatic Power Management. Its phase-locked loop, frequency synthesizer, and delta-sigma phase/frequency detector all work together to ensure the output signal remains close to the target frequency, making the AX7PAF1-1200.0000C an ideal choice for low power, high accuracy, applications.

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