AT90S1200 D.D.S. Function Generator

| June 30, 2023 Updated
AT90S1200 D.D.S. Function Generator

The presented project is a function generator for sinusoidal and square signals production. The output frequency covers the range from 10 Hz to 100 KHz with a step of 2 Hz.

The waveform synthesis is based on the D.D.S. technique (Direct Digital Synthesis) and the output frequency is selected through a microcomputer with an embedded thumb wheel keyboard.

Function Generator Technical specifications

Output Frequency: 10 Hz – 100 KHz (step 2 Hz)
Output Voltage:
Sinus: 0 – 20 Vp-p
Square: 0 – 20 Vp-p
TTL: 5 V
Output Resistance: 1 KOhms

Function Generator Sinusoidal waveform direct digital synthesis

A complete sinusoidal waveform can be synthesized through a D.D.S. system. This system uses a group of 2^21 phases (time slots) and a 16 bit data latch defines how many of them will be contained between two successive synchronization pulses. If the 16 bit data latch contains low numerical values then the output frequency will be low and if the 16 bit data latch contains high numerical values then the output frequency will be high.

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source: http://www.seattlerobotics.org/encoder/200205/ddsfgen.htm

AT90S1200 D.D.S. Function Generator

Password: 320volt.com

Published: 2008/01/11 Tags: ,



2 Comments “AT90S1200 D.D.S. Function Generator

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    AT90S1200 D.D.S. Funktionsgenerator

    Das vorgestellte Projekt ist ein Funktionsgenerator für sinusförmige und quadratische Signalproduktion. Die Ausgangsfrequenz deckt den Bereich von 10 Hz bis 100 kHz mit einem Schritt von 2 Hz ab.

    Die Wellenformsynthese basiert auf dem D.D.S. Technik (Direct Digital Synthesis) und die Ausgangsfrequenz wird über einen Mikrocomputer mit einer eingebetteten Daumenradtastatur ausgewählt.

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