zhao补充 数-模和模-&ael

Zhao补充 数-模和模-&ael

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Unformatted text preview: 1 - - 1. D/A 2. A/D 3. D/A A/D 2 9.1 A/D D/A A/D ADC D/A DAC 3 CD 4 9.2 D/A D/A d n-1 d n-2 d u O i O n d n-1 d n-2 d - =---- = + + + = 1 2 2 1 1 2 2 ... 2 2 n i i i n n n n n d d d d D - = = 1 2 n i i i O d k v K D 3 D 2 D 1 D 0 V O 0000 0V 0001 0.25V 0010 0.5V 0011 0.75V 0100 1V 0101 1.25V 0110 1.5V 0111 1.75V 1000 2V 1001 2.25V 1010 2.5V 1011 2.75V 1100 3V 1101 3.25V 1110 3.5V 1111 3.75V 5 DAC DAC T DAC DAC DAC* DAC* - = = 1 2 n i i i O d k v 6 o f v iR = - f i R V R = -- V V + = A - i i + = = A +- i V- V + R f v o R v i i- i + - V V + = = 7 9.2.1 D/A v O R F (R/2) A- + 2 3 R 2 2 R 2 R R I I 1 I 2 I 3 d d 1 d 2 d 3 i V REF S S 1 S 2 S 3 V- V + LSB MSB S i d =1 V REF d =0 1 1 2 2 3 3 3 3 2 1 1 2 3 2 2 2 2 2 2 2 2 2 d d d d R V R V d R V d R V d R V d i REF REF REF REF REF + + + = + + + = 1 1 2 2 3 3 4 2 2 2 2 2 d d d d V R i v REF F O + + +- =- = 8 1 2 0 1 2 0...
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This note was uploaded on 12/02/2010 for the course ECE ece210 taught by Professor Ece during the Spring '10 term at University of Illinois, Urbana Champaign.

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Zhao补充 数-模和模-&ael

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