2017年3月27日 · The evaluation board has no way of enabling the SPI bus on the AD9854 as the s_select pin which allows selection between serial or parallel interfacing is tied permanently to +VCC which forces it in to parallel mode, now I have made many projects using I2C and SPI bus controlled devices successfully and now I am faced with this rather daunting ...

2022年4月20日 · I am going to design an RF signal generator. I started using AD9850 but it has not a programmable attenuator nor can produce AM modulated signals, as I would. I am so going to choose a different DDS and targeting the AD9854. I found something around, but it seems that nobody has still not used it. I there someone who could kindly help me?

2014年3月9日 · After having used "DDS Modules" (based on the AD9850 device) under Arduino control in many of my amateur radio projects, I've now published some libraries to simplify their use... There is a general library, GitHub - m0xpd/DDS: A Library to host an AD9850 DDS Module on Arduino, which uses a soft SPI interface and a special library for the Arduino DUE, GitHub - m0xpd/DueDDS: A Library to host ...

2020年3月25日 · Hi, Massimo, I'm a newbie and I'm curious if I can create a dialog on my laptop which acts as a screen for my AD9854 DDS. Basically I want to control my DDS through my Arduino Uno? I don't know how to talk to my DSS directly through my usb Port so I want to use my Arduino as a go between. Thanks, Mel Pama

2012年7月31日 · The AD9854 is a fairly complex system, and requires some setting up of registers before you can use it. PAge 33 of the datasheet shows how the registers are laid out, and the following pages explain how to communicate with it.

2013年10月25日 · I have a need for I-Q generation (0'+90')for SDR Looking at using 2 eBay DDS modules with arduino board, LCD, rotory encoder, program to control DDS modules with control word for 0' & 90' phase output.

2020年6月25日 · Frequently used the (Adafruit or els) DDS boards AD9850 with the wonderfull sketch of mr ....? (sorry)! To my surprise it's not only the frequentsy of the clock that has to be changed, but also another code to that board. (to start the correct working of the dividers ?). This is what made things work in my case. (Arduino Uno and the 9850 / 9851 boards. AD9850 (part of the sketch) int32_t freq ...

2022年1月15日 · Hello, I am generating a sinus signal using the ad9833 module wirh md_ad9833 library. but I want to get a cosine signal by phase shifting this sine 90 degrees. I think this will happen with the setPhase() command but I couldn't use this command. I will be glad if you help. Set channel phase Set the specified AD9833 channel output phase in tenths of a degree. 100.1 degrees is passed as 1001 ...

2014年2月14日 · I have a special interest to use the timer(s) to generate in-phase and quadrature square waves at up to 1MHz each. This is for an application in Software Defined Radio to use the Arduino to both drive a DDS for tuning the radio and to generate the quadrature signals to drive the Tayloe detector. Can anyone help with programming the timers to output two squarewave signals on two pins with 90deg ...

2014年9月15日 · Guys, In another thread, someone else claims to have tried to do this and not had any success. Looking at the data sheets for this, it does look like its very hard to keep the devices in sync. Considering that there is a dual DDS chip from Analog Devices e.g. AD9854 Datasheet and Product Info | Analog Devices (and others) Apart from the fact that the 9850 modules are quite cheap. I suspect the ...