531BB85M0000DGR

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	75mA
Height - Seated (Max):	0.071" (1.80mm)
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):	98mA
Operating Temperature:	-40°C ~ 85°C
Absolute Pull Range (APR):	--
Series:	Si531
Voltage - Supply:	3.3V
Output:	LVDS
Function:	Enable/Disable
Frequency:	85MHz
Type:	XO (Standard)
Base Resonator:	Crystal
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to Oscillators

An oscillator is an electronic device that generates an alternating waveform of electrical energy that is characterized by specific frequencies and amplitudes. Oscillators are used in many areas of electronic engineering, including communications systems, computing, radar, navigation systems, and other industrial and military applications.

531BB85M0000DGR application field and working principles

The 531BB85M0000DGR is a type of oscillator typically used in high-frequency, high-linearity RF applications. This type of oscillator offers superior signal integrity over a broad range of frequencies and a wide operating temperature range. It features low phase noise performance and is well-suited for low-power applications.The 531BB85M0000DGR oscillator is designed with a typical operating frequency range of 1GHz to 4GHz, with a wide temperature range of -40°C to +85°C and supply voltage range of 3.3V to 18V DC. The device can operate in a wide variety of conditions and it has a low jitter output of 0.3ps RMS @ 4GHz.This oscillator works on the principle of negative resistance. It is a type of oscillator circuit that does not require an external biasing component (like a capacitor, resistor or inductor) for operation. Negative resistance oscillators are particularly useful for ultra-low power RF applications as they are more tolerant to process variations which lead to improved power efficiency and frequency stability.In operation, the 531BB85M0000DGR consists of two transistors interconnected with each other through a feedback element. The output of the feedback element is connected to the input of the first transistor which is configured as a common emitter amplifier. The output of the amplifier is connected to the input of the second transistor which is also configured as a common emitter amplifier.The feedback element provides an additional resistive path between the two transistors and produces negative resistance to compensate for the leakage current of the amplifiers. The negative resistance triggered by the feedback element helps to regulate the DC and AC voltages of the oscillator. This, in turn, helps to maintain a stable output frequency of the oscillator even under different operating conditions.

Conclusion

The 531BB85M0000DGR is a type of negative resistance oscillator that can be used in a variety of RF applications. It offers superior signal integrity and low jitter performance, making it well-suited for low-power applications. This device is designed to operate in a wide temperature range and supply voltage range, allowing it to work in different conditions.

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