Circuits & Schematics: DDS

1. Low-cost digital DAC provides digital three-phase-waveform synthesis
   Circuits Oscillators NXP UDA1330ATS
   .. or a DSP for digital control. You can perform this synthesis by using conventional analog techniques ( Reference 1 ) or DDS (direct digital synthesis). Digital techniques provide higher stability and the ability to incorporate frequency, ...
   27-10-2023

2. Simple circuit controls stepper motors
   Circuits Analog Devices AD9833
   .. can be simple (Figure 1), but they require a variable-frequency square wave for the clock input. The AD9833 low-power DDS (direct-digital-synthesis) IC with an on-chip, 10-bit DAC is ideal for this task, because you need no external ...
   20-03-2019

3. CMOS hex inverter generates low-distortion sine waves
   Circuits Oscillators
   .. provide a wide-range source of low-distortion sine waves for audio-circuit design and debugging. Although sine waves from DDS (direct digital synthesis) offer greater stability and fewer harmonics and other spurious-frequency components, ...
   09-06-2016
4. Circuit Generates High-Frequency Sine/Cosine Waves From Square-Wave Input
   Circuits Oscillators Digital Mixed Signal Integration MSHFS6
   .. Ambrose, MSI Electronic Design Although quite a few direct digital synthesis (DDS) ICs can generate high-frequency sine waves, their complexity excludes them from many designs. However, designers ...
   09-10-2014
5. Synchronizing Multiple AD9915 DDS-Based Synthesizers
   Circuits Oscillators Radio Application Notes Analog Devices AD9915
   .. the generation of two or more sinusoidal or square wave signals with a known phase relationship between them. The AD9915 DDS IC from Analog Devices, Inc., is capable of providing such signals. This application note offers detailed ...
   09-01-2014
6. AD9833-based USB Function Generator
   Circuits Oscillators Measurement Microcontrollers Usage
   .. so I haven't bought one. I thought this might be a good opportunity to try and make one myself. I found a pretty common DDS (direct digital synthesis) chip, called AD9833 . Then just strap a USB-enabled AVR micro there and maybe some ...
   15-10-2012
7. Modeling of analog part for DDS3 signal generator. Part 2 - Signal Amplitude Gain Control, Signal Offset Regulation, Putting it All Together
   Circuits Oscillators
   Signal amplitude gain control After we have adjusted signal offset voltage filtered it (or not) the next part is to adjust amplitude. We need to adjust signal amplitude from 0 to 12V. For this purpose we are gonna use inverting amplifier with ...
   09-07-2012
8. Modeling of analog part for DDS3 signal generator. Part 1 - Zeroing Offset Voltage, Optional Filter Stage
   Circuits Oscillators
   .. voltage close enough to 0V. Optional filter stage In the next stage of analog part we are going to add a filter. Since DDS signal generator is capable of outputting various types of signals we don’t want it to be hardwired. For ...
   28-06-2012
9. DSS Function Generator on AD9833
   Circuits Oscillators Microcontrollers Usage AD9833
   .. project didn’t look complicated but it was. The MCU part is really simple: just some code for the Display, Keypad and DDS Communication. A DDS AD9833 from Analog Devices is a chip that is driven by a hi-frequency oscillator. I used a 50 ...
   23-04-2012
10. Turn DDS Chip Into Low-Frequency Arbitrary Signal Generator
    Circuits Measurement AD9833
    .. hardware, improving it a bit to get the arbitrary output. The original generator had an AD9833 direct digital synthesis (DDS) IC at its core, under the control of a PIC24FJ16 microcontroller. To get an arbitrary signal out of the DDS, we ...
    06-04-2011

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