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   REPLYADDR lugnut808@spam.yahoo.com   
   REPLYTO 3:770/3.0 UUCP   
   MSGID: <8xGwO.133651$bV6e.93535@fx08.ams4> 35df5758   
   REPLY:  ce5f1d10   
   PID: SoupGate-Win32 v1.05   
   XPost: sci.electronics.design   
      
   On 13/08/2024 12:43 pm, John Larkin wrote:   
   > On Mon, 12 Aug 2024 18:41:59 +0200, Lasse Langwadt    
   > wrote:   
   >   
   >> On 8/11/24 23:07, John Larkin wrote:   
   >>> On Sun, 11 Aug 2024 14:04:36 -0700, John Larkin   
   >>>  wrote:   
   >>>   
   >>>> On Sun, 11 Aug 2024 21:45:42 +0100, Andy Burns    
   >>>> wrote:   
   >>>>   
   >>>>> Surprised nobody has mentioned the Pico2 boards (based on RP2350A or   
   >>>>> RP2350B chips, instead of RP2040).   
   >>>>>   
   >>>>> 2x ARM cores plus 2x RISC-V cores (perm any 2 from 4)   
   >>>>> 150 MHz with FPU instead of 133MHz without   
   >>>>> lower power consumption   
   >>>>> more I/O pins (B model only?)   
   >>>>>   
   >>>>> I really ought to buy a couple for tinkering ...   
   >>>>>   
   >>>>> official boards not available yet, but 3rd party boards are, e.g.   
   >>>>>   
   >>>>>    
   >>>>>    
   >>>>   
   >>>> As of now, Digikey shows no stock on the Pico2 and doesn't recognize   
   >>>> the RP2350 chip as a product. Ditto Mouser.   
   >>>>   
   >>>> The fast floats look great. I wonder how fast they are.   
   >>>   
   >>> The RP2350 data sheet is 1347 pages!   
   >>>   
   >>   
   >> read the part on how the build in buck converter needs a custom inductor   
   >> with polarity marking to work, and tell there is something seriously   
   >> wrong with it   
   >   
   > The polarized inducor is strange. I'd expect that a small shielded   
   > inductor would work fine. It is interesting to have a switching   
   > regulator on a CPU chip... near a 12-bit ADC!   
      
   I don't think they know much about how to do ADCs yet.   
      
   Have a look at the performance of the RP2040 ADC - it is awful!   
      
   http://pico-adc.markomo.me/   
      
   I hope the new one is better.   
      
   --- SoupGate-Win32 v1.05   
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