アナログ・デジタルの仕様とパフォーマンス特性の用語集

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1 Application Report JAJA127 Σ

2 Σ 2

3 3

4 Σ 4

5 5

6 Σ Σ Data Out Data Out Data Out

7 A CS B CLK DOUT D 11 D 10 D 9 D 8 D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 7

8 ± ± A IN+ A IN ADC DAC ±200mV 8

9 π + f s + f s /2 V CM Input IN V CM f s /2 f s ADC + f s /2 IN V CM f s /2 V CM IN IN ADC 9

10 FS /2 FS BPZ 1V LSB BPZ BPZ + 1V LSB /2 +FS FS ± 10

11 FS /2 FS BPZ 1V LSB BPZ BPZ + 1V LSB /2 +FS FS ± 11

12 π δδ /4 FS 1/2 FS 3/4 FS FS 12

13 FS /2 FS BPZ 1V LSB BPZ BPZ + 1V LSB /2 +FS FS ± 13

14 Zero +1V LSB 1/4 FSR 1/2 FSR 3/4 FSR +FS

15 FS /2 FS BPZ 1V LSB BPZ BPZ + 1V LSB /2 +FS FS ± 15

16 ε f CUT-OFF A PASS f STOP A MAX A STOP 16

17 V IN V REF V REF + + V IN+ 17

18 18 JAJA127

19 point FFT, F IN = kHz, 0.2dB B A F D G C E

20 % % % % 20

21 δφ/δωφω ωπ

22 INL < 0 INL < 0 22

23 23

24 24

25 25 JAJA FS 1/2 FS 3/4 FS 1/4 FS 0

26 26 JAJA FS 1/2 FS 0

27 /4 FS 1/2 FS 3/4 FS FS 27

28 ε ε f CUT-OFF A PASS f STOP A MAX A STOP 28

29 29 JAJA127 i n V IN V IN n-i i

30 30 JAJA127 µ ± ±

31 31 JAJA127 Ω CDAC

32 q 32

33 θ 33

34 Amplitude (db) point FFT, F IN = kHz, 0.2dB B A F D G C E

35 Zero V LSB /4 FSR /2 FSR /4 FSR FS

36 (SBAA147A) 36

37 IMPORTANT NOTICE

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