AST3TQ-26.000MHZ-1

Frequency Stability:	±100ppb
Current - Supply (Disable) (Max):	--
Height - Seated (Max):	0.079" (2.00mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	7mA
Operating Temperature:	-40°C ~ 85°C
Series:	AST3TQ
Voltage - Supply:	3.135 V ~ 3.465 V
Output:	LVCMOS
Function:	--
Frequency:	26MHz
Type:	TCXO
Base Resonator:	Crystal
Part Status:	Active
Packaging:	Strip

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Introduction

Oscillators are electronic circuits that produce a periodic electrical signal, usually a sine wave or square wave. The most common types of oscillators are quartz crystal oscillators and voltage-controlled oscillators (VCOs). AST3TQ-26.000MHZ-1 is a voltage-controlled oscillator (VCO) designed for system timing applications. In this article, we\'ll look at the application field and working principle of the AST3TQ-26.000MHZ-1.

Application Field

The AST3TQ-26.000MHZ-1 is a voltage-controlled oscillator (VCO) designed for system timing applications such as frequency synthesisers, phase locked loops (PLLs), frequency dividers, and clock timing circuits. This oscillator is also suitable for use in automotive and industrial applications such as automotive infotainment systems, audio systems, and remote keyless entry (RKE) systems. Furthermore, AST3TQ-26.000MHZ-1 is also ideal for use in communication systems such as Ethernet switches and routers, WLAN systems, and Bluetooth.

Working Principle

The AST3TQ-26.000MHZ-1 is a voltage-controlled oscillator (VCO) designed to operate from a low supply voltage and provide an adjustable frequency range. It uses an inverting amplifier structure to provide a phase-shift of 180° at the VCO output. The oscillator frequency is controlled by an external control voltage applied to the VCO feedback loop. The VCO output is further filtered to reduce harmonics.The AST3TQ-26.000MHZ-1 is a temperature compensated oscillator (TCO) designed to ensure stability. It includes three stages of frequency compensation to ensure accurate frequency tuning over temperature variations. The first stage of temperature compensation is provided by a sacrificial resistor and a pair of transistors. The second stage is provided by a voltage divider and a PTS as a temperature sensitive current source, while the third stage is provided by a bank of capacitors. As a result, the AST3TQ-26.000MHZ-1 is a reliable and stable voltage-controlled oscillator (VCO) designed to provide an adjustable frequency range and excellent temperature stability.

Conclusion

In conclusion, the AST3TQ-26.000MHZ-1 is a voltage-controlled oscillator (VCO) designed to provide an adjustable frequency range and excellent temperature stability for system timing applications such as frequency synthesisers, phase locked loops (PLLs), frequency dividers, and clock timing circuits. The oscillator frequency is controlled by an external control voltage applied to the VCO feedback loop and further filtered to reduce harmonics. The AST3TQ-26.000MHZ-1 is also a temperature-compensated oscillator (TCO) designed to ensure stability over a wide temperature range.

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