Function:	Enable/Disable
Current - Supply (Disable) (Max):	75mA
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):	88mA
Operating Temperature:	-40°C ~ 85°C
Frequency Stability:	±20ppm
Voltage - Supply:	3.3V
Output:	CMOS
Series:	Si532
Frequency - Output 4:	--
Frequency - Output 3:	--
Frequency - Output 2:	144.33192MHz
Frequency - Output 1:	127.794MHz
Type:	XO (Standard)
Base Resonator:	Crystal
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Pin Configurable/Selectable Oscillators, commonly referred to as PSOs, have become increasingly popular in the last few decades. Publicly available in a wide variety of form factors, these logic-controlled configurable oscillators reduce the time, complexity and cost of analog circuit design. The 532CB000322DGR PSO is a specialized application of the ProRF™ family of PSOs, manufactured by TXC Corporation, Taiwan.

Application field

The 532CB000322DGR PSO is designed to be used in a wide range of applications including VHF/UHF radios, RF transmitters/receivers, wire antennas and satellite navigation systems. Specifically, this PSO is suited for use in precision navigation applications, as its low power consumption combined with high resolution provides for accurate data acquisition and control. Its configurability makes it ideal for applications which require varying output frequencies, from 2 to 250MHz.

Working Principle

The basis of the 532CB000322DGR PSO is its input/output configuration. This configuration of the oscillator provides for logic control of the output frequency. When a logic signal is applied to the inputs, the output frequency is regulated by the on-chip digital logic function.The logic function consists of on-chip logic blocks, with the main building blocks being a programmable logic array (PLA), a reference oscillator, a divider chain, a phase-locked loop (PLL) and a voltage-controlled oscillator (VCO). The on-chip logic blocks provide functionality such as frequency division, phase detection and frequency control. The PLL is the main complex component of the PSO, and it is used to lock the output frequency to a reference frequency. It works by comparing the phases of two signals: a reference signal and an output signal. When the phases are found to be equal, the output frequency is locked to the reference frequency. The PLL is used in combination with a VCO, which is used to control the frequency of the output signal. The VCO creates a frequency control voltage, which is then generated by a control loop. This is done by comparing the reference frequency to a reference voltage. The PLL then uses the reference frequency and the control voltage to adjust the output frequency until it is equal to the reference frequency.

Conclusion

The 532CB000322DGR PSO from TXC Corporation is a highly configurable, precision oscillator designed for a wide range of applications. Its on-chip logic blocks provide the necessary control of the output frequency, and its low power consumption and high resolution make it ideal for applications requiring accurate frequency control. With its configurability, it is suitable for use over a wide frequency range, from 2 to 250MHz.

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