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EEVblog #801 – How To Design A Digital Clock

EEVblog #801 – How To Design A Digital Clock

The next step for Ahmed Mohamed How to design your own digital clock from 4000 ...

  • Gert

    Very nice! Looking forward to the pfoto’s of the board

  • Asm

    Quite interesting that they put LEDs in the RF section – there’s quite a few of them too!

    Didn’t bother counting, but here’s a couple images with them:

    http://www.flickr.com/photos/eevblog/8224567879/in/set-72157632115219155 (D300 and D500)

    http://www.flickr.com/photos/eevblog/8225628522/in/set-72157632115219155/ (D200, D205, D211)

  • Martin

    Hi Dave!

    Thank you very much for the eagerly awaited teardown of the DSA815-TG. Now I know that the christmas gratification is not misspent. Well done, thumbs up and keep going!

    Best regards from Hamburg, Germany

  • tchicago

    From the pinout, the ADC chip looks like LTC2245 (or the other part # from this series with a different speed grade – 2246, 2247, 2248, 2249, 2254, 2255), but definitely a 14-bit device.

  • Rick

    Great teardown! I noticed that there are routed slots associated with each filter. Are these for thermal relief?

  • Lior B

    Nice! U103 (the QFN without any markings at 16:55) looks like a variable attenuator from peregrine (PE4306) with 5 bit resolution.