1 / 3

-2V

a. b. +2V. -2V. 8 bit. ADC. a. Tetik. 8. ADC (Analog to Digital Conversion):. a: Analog, b: Dijital. 0. +2V. a=-0.45 ise b=156.1875 →b=156. -2V. 255=2 8 -1. 8 bitlik hasssasiyet. 156-128=28. 28-16=12. 128 64 32 16 8 4 2 1. 12-8=4. 1. 0. 0. 1.

bishop
Télécharger la présentation

-2V

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. a b +2V -2V 8 bit ADC a Tetik 8. ADC (Analog to Digital Conversion): a: Analog, b: Dijital 0 +2V a=-0.45 ise b=156.1875→b=156 -2V 255=28-1 8 bitlik hasssasiyet 156-128=28 28-16=12 128 64 32 16 8 4 2 1 12-8=4 1 0 0 1 1 1 0 0 4-4=0 8. 7. 6. 5. 4. 3. 2. 1. bit ASCII: American Standard Code for Information Exchange 156 £ Alt tuşu ve 156 1 byte=8 bit Örnekleme Frekansı: fs

  2. ASCII Kod Tablosu

  3. 0 +5V a b -5V 4095=212-1 Hassasiyet: 12 bitlik ADC ile kaydedilen ölçüm bilgisi: 13x256 + 106 Referans gerilimleri sırası ile 5 V (tüm bitler 0) ve –5 V (tüm bitler 1) Ölçüm bilgisinden ölçülen gerilim değeri=? 13 x 256 + 106 = 3434 a=-3.4 V 32 bitlik bir ADC de kaydedilen 4 karakter %cA= ise b = (37) 2563 + (99) 2562 + (65) 2561 + (61) 2560 = 627261757 1 V aralık için hassasiyet: 1/(2^32-1)/2 = 1.16e-10 32 bitlik bir ADC de b = 367896332 ise kaydedilen 4 ASCII karakteri: 367896332 / 2563 = 21.9283, b1 = 367896332 – (21) 2563 = 15574796 15574796 / 2562 = 237.6525, b2 = 15574796 – (237) 2562 = 42764 42764 / 2561 = 167.0469, b3 = 42764 – (167) 2561 = 12 Yanıt: 021, 237, 167, 012 nolu karakterler

More Related