3 ms·
> The ADS7953 is somewhat of a ferrari, whereas the MCP3208 feels like a Toyota, simple to use, unimpressive performance. What about the AD9226? It only has a
by grishka 1y ago
> The ADS7953 is somewhat of a ferrari, whereas the MCP3208 feels like a Toyota, simple to use, unimpressive performance.
What about the AD9226? It only has a single channel but can do up to 65 MSa/s at 12 bits. I bought one as a module for around $12 on AliExpress to experiment with software decoding of analog video. I only run it at 20 MSa/s and only use 8 bits because, funnily enough, the limiting factor is the speed at which I could get the data into my laptop. I connected it to a Raspberry Pi Zero and use the SMI peripheral as described here: https://iosoft.blog/2020/07/16/raspberry-pi-smi/ https://iosoft.blog/2020/07/16/raspberry-pi-smi/
- theamk 1y agoFor the curious: that blogpost does not mention the Pi model explicitly, but one of the links refers to BCM2835. This means Raspberry Pi Model 1.
- beachy 1y agoThe article does reference pi 3b and zero W.
- bobmcnamara 1y agoI've used it on pi1-4. Not sure if Pi5 has SMI on its southbridge
- beachy 1y agoThat is very interesting, especially using SMI to talk to rpi. Never seen SMI used in anger before.
- bobmcnamara 1y agoI've seen it used as a multi channel logic wave generator. Basically a 16bit wide relatively fast DMA.