CS5571 Просмотр технического описания (PDF) - Cirrus Logic

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Компоненты Описание

производитель

CS5571

±2.5 V / 5 V, 100 kSps, 16-bit, High-throughput ∆Σ ADC

Cirrus Logic 

3/25/08

10:56

CS5571

LIST OF FIGURES

Figure 1. SSC Mode - Read Timing, CS remaining low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 2. SSC Mode - Read Timing, CS falling after RDY falls . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 3. SEC Mode - Continuous SCLK Read Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 4. SEC Mode - Discontinuous SCLK Read Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 5. Voltage Reference Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 6. CS5571 Configured Using ±2.5V Analog Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 7. CS5571 Configured for Unipolar Measurement Using a Single 5V Analog Supply . . . . 18

Figure 8. CS5571 Configured for Bipolar Measurement Using a Single 5V Analog Supply . . . . . 19

Figure 9. CS5571 DNL Plot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 10. CS5581 DNL Error Plot with DNL Histogram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 11. Spectral Performance, 0 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 12. Spectral Performance, -6 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 13. Spectral Performance, -12 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 14. Spectral Performance, -80 dB Dither On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 15. Spectral Performance, -80 dB Dither Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 16. Spectral Performance, -100 dB Dither On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 17. Spectral Performance, -100 dB Dither Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 18. Spectral Performance, -116.3 dB Dither On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 19. Spectral Plot of Noise with Shorted Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 20. Noise Histogram, 4096 Samples Dither On, Code Center. . . . . . . . . . . . . . . . . . . . . . 24

Figure 21. Noise Histogram, 4096 Samples Dither Off, Code Center. . . . . . . . . . . . . . . . . . . . . . 24

Figure 22. Noise Histogram, 4096 Samples Dither On, Input at Code Boundary . . . . . . . . . . . . . 24

Figure 23. Noise Histogram, 4096 Samples Dither Off, Input at Code Boundary . . . . . . . . . . . . . 24

Figure 24. CS5571 Digital Filter Response (DC to fs/2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 25. CS5571 Digital Filter Response (DC to 10 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 26. CS5571 Digital Filter Response (DC to 4fs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 27. Simple Multiplexing Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 28. More Complex Multiplexing Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

LIST OF TABLES

Table 1. Output Coding, Two’s Complement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 2. Output Coding, Offset Binary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

DS768PP1

3

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