513EAA000644AAG

Function:	Enable/Disable
Current - Supply (Disable) (Max):	18mA
Package / Case:	6-SMD, No Lead
Height:	0.071" (1.80mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Current - Supply (Max):	43mA
Operating Temperature:	-40°C ~ 85°C
Frequency Stability:	±50ppm
Voltage - Supply:	2.5V
Output:	LVPECL
Series:	Si513
Frequency - Output 4:	--
Frequency - Output 3:	--
Frequency - Output 2:	--
Frequency - Output 1:	161.1328MHz, 174.7031MHz
Type:	XO (Standard)
Base Resonator:	Crystal
Part Status:	Active
Packaging:	Tray

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Introduction to Pin Configurable/Selectable Oscillators

Pin configurable/selectable oscillators are a type of oscillator technology used across many different industries to enable the user to make rapid changes in stability, accuracy and frequency on an application basis. This type of oscillator is designed to incorporate the convenience of pin selectable frequency and power control and the stability of a crystal oscillator with the accuracy and features of a voltage control oscillator (VCXO), enabling the device to be tuned and switched for different applications.

513EAA000644AAG Application Field and Working Principle

The 513EAA000644AAG is a pin configurable/selectable oscillator with a frequency stability of ± 25 ppm and a maximum frequency of 10 MHz. It is suitable for a wide range of frequency-sensitive applications, including test and measurement, pulse generation, embedded controller clock signal and signal repetition. The 513EAA000644AAG oscillator incorporates a PLL (Phase Locked Loop) architecture to generate a signal that is in synchronous relationship with the reference oscillator. This architecture consists of three parts: a VCO (Voltage Controlled Oscillator); a PLL lock to reduce the impact of reference oscillator frequency variations; and a divider to reduce the output frequency. The VCO is powered by the internal voltage regulator and the user can select the output frequency of the oscillator from its range of 1 to 10 MHz by programming the appropriate control pins. This allows the user to tune the output frequency for application specific requirements. The PLL lock, referred to as the R-C circuit, enables the output signal to remain in synchronous relationship with the reference oscillator so that any frequency variations from the reference oscillator’s frequency will be minimized. The divider is used to reduce the output frequency of the oscillator. Other features of the 513EAA000644AAG oscillator include a temperature range of –55°C to +125°C, a duty cycle of 40/60 and a supply voltage range of 1.8 to 3.3 V. The device is also equipped with a power down input that allows the oscillator to be put into a low power state when it is not being used.

Conclusion

Pin configurable/selectable oscillators provide the convenience and stability of a crystal oscillator and the accuracy and features of a VCXO (Voltage Controlled Oscillator) in a single device. The 513EAA000644AAG oscillator is a great example of this technology, providing the user with the ability to tune their output frequency for application specific requirements and minimizing the impact of changing reference oscillator frequencies. With its wide operating temperature range, 40/60 duty cycle and supply voltage range of 1.8 to 3.3 V, the 513EAA000644AAG is a highly configurable and stable oscillator device suitable for many different frequency-sensitive applications.

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