633L15626C2T

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Oscillators

Oscillators are electronic circuits that generate repeating waveforms, usually sinusoidal, across a range of frequencies. They provide an indispensable source of timekeeping and communication information in digital systems and have innumerable uses in analog systems. This article will focus on the 633L15626C2T oscillator applicability and working principle.

633L15626C2T is a temperature compensated, high precision voltage-controlled oscillator (VCO) with an operational temperature range of -30°C to +85°C. It is typically used in precision timing applications, such as watches or clocks, but is also highly suitable for mobile communications, automotive electronics, and industrial systems where size and power are critical factors. Its application technology consists of a low-noise, stable temperature compensated voltage-controlled oscillator (TCXO) with a wide frequency selection. The VCO technology used has been optimized for low-power operation, and offers a wide frequency selection.

The 633L15626C2T oscillator requires a very low power input of just 1.2V, and its frequency range is from 1MHz to 50MHz, with a typical operating frequency of 8MHz. It features a random frequency variation of ±500ppm over the full operating temperature range. It also includes an output ECL clock signal, with a duty cycle of 40-60%, as well as a TTL compatible input for frequency control.

The 633L15626C2T oscillator works by utilizing a voltage-controlled oscillator and temperature-compensated active filter, integrated in a single chip. The oscillator is constituted of a pair of inverters; when one inverter is flipped, it triggers the other and the oscillation process is repeated. A crystal is used as an active element to generate the oscillation; the temperature of the crystal influences the oscillation frequency, so temperature compensation is necessary. The active filter adjusts the oscillator frequency by generating a signal that is almost equal to the temperature variation of the crystal. It amplifies the output of the oscillator in order to cancel the influence of the temperature change on the frequency.

The 633L15626C2T oscillator is designed for low power operation, with a typical operating power consumption of 1.7mW. This is achieved by utilizing a switching voltage-controlled oscillator core and a temperature compensated filter block, which together result in a highly efficient oscillator package. Its output is ECL compatible and requires a single +3.3V power supply.

The 633L15626C2T oscillator is an ideal choice for precision timing applications, where its accuracy, small size, and low power consumption are particularly desirable. Its wide frequency selection, temperature range, and low power requirements make it applicable to a wide range of consumer and industrial applications. With its combination of low power and temperature compensated control, it offers superior performance in comparison with traditional clock oscillators.

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