TCO-7085X1A2 26.0000M

Absolute Pull Range (APR):	--
Current - Supply (Disable) (Max):	--
Height - Seated (Max):	0.071" (1.80mm)
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):	20mA
Operating Temperature:	-20°C ~ 70°C
Series:	TCO-7085
Frequency Stability:	±25ppm
Voltage - Supply:	3.3V
Output:	CMOS
Function:	Standby (Power Down)
Frequency:	26MHz
Type:	XO (Standard)
Base Resonator:	Crystal
Part Status:	Not For New Designs

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Oscillators: TCO-7085X1A2 26.0000M application field and working principle

Oscillators are one of the most common and critical components in virtually all electronic systems, including the ubiquitous mobile phones and modern communications systems. In radio frequency (RF) applications, oscillators are used to generate complex signals, such as those employed for 802.11 Wifi and cellular networks. Oscillators are also used to enable precision timing and synchronization of the various components and modules found in those systems. As a result, oscillator performance is often the limiting factor in determining the system performance.The TCO-7085X1A2 26.0000M oscillator from Tempus Technologies is a fundamental oscillator with a frequency range of 25MHz to 26MHz. It features excellent frequency stability over time and temperature, low phase noise, and low power consumption (<2mA). This oscillator is designed for use in cellular base station applications, especially where synchronization of multiple systems is required. The TCO7085X1A2 allows for precise synchronization between multiple satellite receivers located in different parts of the world.The TCO-7085X1A2 has two main components: an oscillator chip and a resonator. The oscillator chip is a silicon CMOS integrated circuit (IC) that contains an amplifier, an oscillator circuit, and controls for frequency and power. The amplifier controls the signal level, while the oscillator circuit acts as a voltage controlled oscillator (VCO) to produce the desired output frequency. The resonator is a quartz crystal that provides high stability and accuracy to the output frequency.To understand the working principle of an oscillator like the TCO-7085X1A2 first requires knowledge of the basics of alternating current (AC) circuits. AC circuits can be characterized by a sine wave, which is a waveform that oscillates between two output values. The frequency of the sine wave is determined by the time period (T) between each peak, where:Frequency = 1/TIn an oscillator, an AC sine wave is generated when the circuit is driven by a VCO. The VCO provides an input voltage that results in a corresponding output frequency. The VCO output is amplified by the amplifier and is then input into the resonator. The resonator acts as a frequency filter and is used to ensure that the output frequency is stable and accurate.The TCO-7085X1A2 is designed with excellent stability over wide temperature swings. This is achieved by using an oscillator chip with a temperature compensation circuit. The temperature compensation circuit senses the ambient temperature and adjusts the gain of the oscillator circuit so that the output frequency remains close to the desired frequency value, even under environmental temperature variations.In summary, the TCO-7085X1A2 is a temperature compensated oscillator designed for use in cellular base station applications where precise synchronization of multiple systems is required. Its excellent frequency stability over time and temperature, low phase noise, and low power consumption make it an ideal choice for such applications.

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