Motore di ricerca datesheet componenti elettronici |
|
BU1S12S1AG-TR Scheda tecnica(PDF) 9 Page - Rohm |
|
BU1S12S1AG-TR Scheda tecnica(HTML) 9 Page - Rohm |
9 / 20 page BU1S12S1AG-LB 9/16 © 2016 ROHM Co., Ltd. All rights reserved. www.rohm.com TSZ22111・15・001 TSZ02201-0GSG0GZ10180-1-2 04.Jul.2016 Rev.001 Description of Functions 1. Overview of A/D Conversion Process BU1S12S1AG-LB is a successive-approximation A/D converter designed with a charge-redistribution D/A converter. Simplified schematics of the A/D converter are shown in Figure 18 and Figure 19. Figure 18 shows the A/D converter in Track mode: the switch SW1 is in the position A, SW2 is closed and balances the comparator. Then, the sampling capacitor is charged with the analog input voltage VIN. Figure 19 shows the A/D converter in Hold mode. When a conversion starts, the A/D converter goes into Hold mode: SW2 becomes open, SW1 connects the sampling capacitor to ground through the terminal B and the comparator loses its balance. The control logic controls the input voltage of the comparator via the sampling capacitors of the charge-redistribution D/A converter to get the comparator back into a balanced state. A/D conversion finishes when the comparator balances again. The control logic also generates the output code of the A/D converter. VIN SW1 GND SAMPLING CAPACITOR SW2 VA 2 CHARGE REDISTRIBUTION DAC CONTROL LOGIC A B VIN SW1 GND SAMPLING CAPACITOR SW2 VA 2 CHARGE REDISTRIBUTION DAC CONTROL LOGIC A B 2. Ideal Transfer Characteristics Figure 20 shows the ideal transfer characteristics of BU1S12S1AG-LB. Code transitions occur midway between successive integer LSB values, such as 0.5 LSB, 1.5 LSB, and so on. The LSB size for the BU1S12S1AG-LB is VA / 4096. The output code format of the A/D converter is straight binary 111...111 111...110 111...000 011...111 000...010 000...001 000...000 0V 0.5LSB ANALOG INPUT +VA - 1.5 LSB 1LSB = VA / 4096 Figure 19. Hold mode Figure 20. Ideal Transfer Characteristics Figure 18. Track mode |
Codice articolo simile - BU1S12S1AG-TR |
|
Descrizione simile - BU1S12S1AG-TR |
|
|
Link URL |
Privacy Policy |
ALLDATASHEETIT.COM |
Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | scambio Link | Ricerca produttore All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |