SIT9005ACB2G-XXNF

Frequency Stability:	±20ppm, ±25ppm, ±50ppm
Height:	0.030" (0.76mm)
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	6.5mA
Spread Spectrum Bandwidth:	-1.55%, Down Spread
Operating Temperature:	-20°C ~ 70°C
Frequency Stability (Total):	--
Series:	SIT9005
Voltage - Supply:	2.5 V ~ 3.3 V
Output:	LVCMOS
Function:	--
Available Frequency Range:	1MHz ~ 141MHz
Programmable Type:	Programmed by Digi-Key (Enter your frequency in Web Order Notes)
Type:	SSXO
Base Resonator:	MEMS
Part Status:	Active

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Programmable Oscillators

Programmable oscillators are electronic devices known for their ability to generate a wide range of precise and close tolerance frequency outputs. SIT9005ACB2G-XXNF is a high-performance oscillator, which falls into the broad category of programmable oscillators, and is widely used in many applications. This article will discuss the application fields of SIT9005ACB2G-XXNF as well as its working principle.

Application Fields of SIT9005ACB2G-XXNF Oscillator

SIT9005ACB2G-XXNF oscillator is an ideal choice for many applications that require precise frequency control such as communications, navigation, and medical instrumentation. In communications, these oscillators are employed in modems, premise equipment, and other networking devices. Additionally, the precision frequency control of these oscillators allow them to be used in application of metering, control and monitoring systems. SIT9005ACB2G-XXNF oscillator also finds application in navigation systems, as it allows the precise tracking of GPS satellites and other navigation devices. The wide range of precise and close tolerance frequency outputs of SIT9005ACB2G-XXNF oscillators also mean they are suitable for use in medical instrumentation. These oscillators are capable of accurately measuring vital signs such as heart rate, respiration rate and blood pressure over a long period of time, allowing medical professionals to take more informed decisions.

Working Principle of SIT9005ACB2G-XXNF Oscillator

SIT9005ACB2G-XXNF oscillators generate precise and close tolerance frequency outputs by utilizing dual phase control and PWM technology. The oscillator has two control input terminals named P1 (phase-controller) and P2 (amplitude controller or pulse controller). The P1 and P2 nodes are used to control the operation and stability of the oscillator. The relationship between the P1 and P2 signals can be adjusted with a potentiometer connected to the oscillator to set the desired frequency output.At the centre of the oscillator is an integrator circuit, comprising a high gain operational amplifier and associated RC components. The circuit has two control input terminals and an output terminal. The two control terminals are fed with the P1 and P2 signals which triggers switching between two different states of operation. In the first state, the integrator output voltage increases exponentially and then reaches a saturation threshold. The P2 signal triggers a reset operation and the output voltage is zeroed, readying the integrator for the second state. In the second state, the output voltage charges exponentially until the P1 signal triggers another reset operation and the cycle is repeated. Due to the precise and continuous cycling of these control signals, precise and close tolerance frequency outputs can be generated. The frequency of the oscillator can be adjusted by changing the resistance between the P1 and P2 terminals to define the relationship between the P1 and P2 signals. This adjustment has the effect of changing the rise and fall time of the output voltage, thereby controlling the frequency of the output.

Conclusion

SIT9005ACB2G-XXNF is a programmable oscillator widely used in a range of applications in communication, navigation, and medical instrumentation. The precision frequency control of these oscillators is due to their dual phase control and PWM technology. The frequency of the output can be adjusted by changing the resistance between the P1 and P2 terminals. This ability of programmable oscillators makes them an ideal choice for many applications requiring precise and close tolerance frequency outputs.

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