Oscillators

Oscillators are commonly used in circuit design to generate a periodic signal, or an alternating waveform that oscillates up and down at specific intervals. Oscillators are used in many electronic applications, including audio electronics, communications, control systems, indicators, timing, and metering devices. Oscillators work based on the principle of positive feedback, where a part of the output is used to sustain or control the oscillation. One such oscillator type is the TA-12.000MDD-T, an oscillator that is designed for applications requiring a stable reference frequency.

TA-12.000MDD-T Application Field

The TA-12.000MDD-T operates within a temperature range of -40 to +85Celedius, and offers an output frequency of 12MHz with a stability of ±20pFin over this temperature range. It is an ideal choice for applications with tight timing requirements, such as communications and aerospace. The oscillator is also suitable for instrumentation, test, automotive, and industrial automation, due to its compact size, cost-efficient design, and wide operating temperature range.

TA-12.000MDD-T Working Principle

The TA-12.000MDD-T is based on a Voltage Controlled Oscillator (VCO) design. The oscillator consists of a metal-oxide-semiconductor voltage-controlled oscillator (MOS VCO) that is temperature compensated, and phase-locked to a precision temperature-compensated crystal oscillator (TCXO). The metal-oxide-semiconductor field-effect transistor (MOSFET) is used as the active device, which is biased and forms a tuned circuit with an integrated inductor and capacitors. The metal-oxide-semiconductor VCO is phase-locked to the TCXO that uses the output from the VCO as the error signal to make fine adjustments. This arrangement essentially forms a feedback loop that helps maintain the oscillation stability.

The TA-12.000MDD-T is designed to provide outstanding performance over a wide temperature range thanks to the integrated temperature compensation functions. It offers excellent phase noise and jitter performance, making it suitable for circuits that demand precise references. A wide supply voltage range from 1.8V to 5.25V also offers greater flexibility as the power requirement can be easily adjusted depending on the specific application.

Summary

The TA-12.000MDD-T oscillator is a voltage controlled oscillator that is designed for applications requiring tight timing parameters. It offers a stable reference frequency of 12MHz within a wide temperature range of -40 to +85Celedius, and a supply voltage range of 1.8V to 5.25V. Its advanced temperature compensation and phase-locking functions ensure excellent phase noise and jitter performances, making it ideal for mission-critical applications in areas such as aerospace, communications, instrumentation, and industrial automation.