Low Distortion Sine Wave Generator Ic

Total harmonic distortion thd.

Low distortion sine wave generator ic.

Functionally this board uses a wien bridge oscillator that. Simple circuitry low distortion battery operated variable low impedance output up to 1v rms. Low distortion and low output impedance in order to obtain good overload capability. Sine wave oscillators are used as references or test waveforms by many circuits.

It also works down to 10 hz with much larger capacitors. Sine triangle sawtooth or square pulse waveforms with an harmonic distortion under 1 duty cycle adjustment. Low noise low distortion sine wave generator for testing adc demo boards demonstration circuit 1858a is a low noise low distortion sine wave generator designed to be used in conjunction withlineartechnology 16 bit and 18 bit adc demoboards. A low distortion tuneable sine wave oscillator one can make a low distortion tuneable oscillator by incorporating an active filter inside an agc loop.

A cmos 555 timer ic produces a 50 duty cycle square wave. Thus a sine wave may be the input to a device or circuit with the output harmonics measured to determine the amount of distortion. Description this circuit uses the versatile max038 function generator. This document describes a design of a wave generator with a bandwidth over 10mhz which produce.

Schematic of the sine wave oscillator consisting of a low distortion lt1632 based wien bridge oscillator core and an ltc1968 controlled amplitude stabilization loop. Abstrath this project comes from the necessity of getting a wave generator with a bandwidth over 10 mhz and an harmonic distortion under 1 all of this with a low cost price. A small filament bulb ensures a stable long term output amplitude waveform. Some distortion is common as it s difficult to completely eliminate the harmonics.

With a control voltage vg of 0 1 to 2v one can obtain over a decade of tuning range with oscillation frequencies from 200khz to 3mhz in this particular design. Its output is sent to a low pass rc filter that filters out the harmonics leaving only the fundamental sine wave. A pure sine wave has only a single or fundamental frequency ideally no harmonics are present. 8 bitdac requires a clock that is 256 output sine wave frequency and dac glitching and settling which will introduce significant distortion as output frequency increases.

Aug 5 2020 adjustable high low frequency sine wave generator low distortion. A more selective lc filter can be used to improve sine wave quality. Tom worked out the sample and hold circuit in 1987 for john linsley hood s spot frequency distortion meter. 1khz sine wave generator.