bomanz
High-speed pHAT
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| References | Qty | Description | Manufacturer | MPN | Manufacturer | MPN | Manufacturer | MPN | Manufacturer | MPN | Digikey | Mouser | RS | Farnell | LCSC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C1 | 1 | Capacitor 100p 0805 | AVX | 08051A101J4T4A | KEMET | C0805C101J5GACTU | Samsung | CL21C101JBANNNC | 399-1122-6-ND | 80C0805C101J5G | 2644292 | 1414656 | C1790 | ||
| C3, C5, C6, C11, C15, C20 | 6 | Capacitor 10u 1206 | AVX | TAJA106K016RNJ | Samsung | CL31A106KAHNNNE | 1276-1075-6-ND | 581TAJA106K016R | 1360124 | 1432339 | C7171 | ||||
| C4, C7, C8, C9, C10, C12, C13, C16, C17, C19, C21, C22, C23 | 13 | Capacitor 0.1u 0805 | Yageo | CC0805KRX7R9BB104 | Murata | GRM21BR71H104KA01L | 311-1140-6-ND | 603CC805KRX7R9BB104 | 6698842 | 3019949 | C77082 | ||||
| C18 | 1 | Capacitor 10n 0805 | AVX | 08051C103KAT2A | KEMET | C0805C103J5GACTU | 478-1358-6-ND | 58108051C103K | 8029914 | 1535573 | C188188 | ||||
| P2 | 1 | 3-pin general header PLS-3 | |||||||||||||
| P3 | 1 | 2-pin general header SCSL-2 | |||||||||||||
| P4 | 1 | Header, 3-Pin, Dual row Header 3X2 PBD-6 |
Module: A high speed ADC for the RaspberryPi
The board in red:

Description
What is it supposed to do?
I've always needed a small upgrade to the existing raspberry ADC extensions, would love something in the 20-Msps range. Let's see if one can do it! Never tried smd, and thinking of using both smd and dip.. interesting learning curve ahead.
I've tried 3 different versions, increasing in complexity
- An older version using a CA3306 can be found as well: going around 10Msps, 6 bits. DIP based components.
- A possibly fast version of a 8 bit AD08200 ADC is available, going up to 12Msps.
- The latest 24Msps pHAT
Image of these HATs

Some results
24 Msps with the latest version
Details and FFT of a signal at 1.9MHz

11 Msps with the previous
FFT of a signal at 1.9MHz

Testing a 1MHz signal with the CA3306
Imaging a 1MHz sine:


License
Bomanz
The echOmods project and its prototypes (so Bomanz) are open hardware, and working with open-hardware components.
Licensed under TAPR Open Hardware License (www.tapr.org/OHL)
Copyright Kelu124 (kelu124@gmail.com ) 2015-2018