DDS Module - AD9850
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Introduction
The DDS module is base on AD9850 which is provided by ADI Company and common used in many DDS module.The chip provide 0-40MHz measurement capability,the AD9850’s innovative high speed DDS core provides a 32-bit frequency tuning word, which results in an output tuning resolution of 0.0291 Hz for a 125 MHz reference clock input.
This module provide you a ready made hardware and you can use serial or paralle pins on board to control the AD9850 for different frequency out put. The duty can be adjust by a adjustable resistor - which change the adjust voltage level of the comparer.
- Model: BK009
Feature
- 2 channles square wave output and 2 chanles sine wave output
- Sine wave: 0-40M ; Square wave: 0-1M
- Using 70MHz low pass filter, the waveform's SN better clear
- Parallel and Seiral data bus selction
- Duty cycle adjustedable - Comparator reference input voltage generated by the variable resistor
- DA reference Pin12 elicit, easy adjustment wave out amplitude
- Size: 42 x 30 x 1.6 mm
Application Ideas
Cautions
Schematic
Specification
Pin definition and Rating
1. Unconnect:Parallel mode, Connect: Serial mode
2. AD9850
3.
| GND | D6 |
| D7 | D5 |
| WCLK | D4 |
| FQUP | D3 |
| REST | D2 |
| VCC | D1 |
| I-R | D0 |
Serial mode just need connect GND,D7 WCLK, FQUP, REST, VCC, I-R
Parallel mode need connect all of the pin.
4. Current Supply Slection
5. 125Mhz Active crystal
6. Unconnect: square wave enable , Connect: square wave disable
7.
| Pin define |
|---|
| Comparator Input |
| Comparator Voltage |
| NC |
| Sine Wave 1 |
| NC |
| Square Wave 2 |
| Square Wave 1 |
8. Duty cycle adjustedable - Comparator reference input voltage generated by the variable resistor
9. Power State LED
10. Sine Wave 2(Output)
Mechanic Dimensions
Usage
Hardware Installation
Programming
Includes important code snippet. Demo code like :
Demo code { }
Example
The projects and application examples.
Bill of Materials (BOM) /parts list
All the components used to produce the product.
FAQ
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Support
If you have questions or other better design ideas,
Version Tracker
| Revision | Descriptions | Release |
|---|---|---|
| v1.0b | Initial public release | date |
Bug Tracker
Bug Tracker is the place you can publish any bugs you think you might have found during use. Please write down what you have to say, your answers will help us improve our
products.
Additional Idea
The Additional Idea is the place to write your project ideas about this product, or other usages you've found. Or you can write them on Projects page.
Resources
How to buy
Click here to buy: http://www.elecfreaks.com/store/dds-module-ad9850-p-260.html
See Also
Other related products and resources.
Licensing
This documentation is licensed under the Creative Commons Attribution-ShareAlike License 3.0 Source code and libraries are
licensed under GPL/LGPL, see source code files for details.
External Links
Links to external webpages which provide more application ideas, documents/datasheet or software libraries
