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… Electronics Projects, AT90S1200 D.D.S. Function Generator “avr project, microcontroller projects, “
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. 
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