CS5531-AS Просмотр технического описания (PDF) - Cirrus Logic

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CS5531-AS

16-bit and 24-bit ADCs withUltra-low-noise PGIA

Cirrus Logic 

CS5531/32/33/34-AS

LIST OF FIGURES

Figure 1. SDI Write Timing (Not to Scale)............................................................................... 11

Figure 2. SDO Read Timing (Not to Scale)............................................................................. 11

Figure 3. Multiplexer Configuration ......................................................................................... 12

Figure 4. Input models for AIN+ and AIN- pins ....................................................................... 13

Figure 5. Measured Voltage Noise Density............................................................................. 13

Figure 6. CS5531/32/33/34 Register Diagram ........................................................................ 14

Figure 7. Command and Data Word Timing ........................................................................... 22

Figure 8. Guard Signal Shielding Scheme .............................................................................. 24

Figure 9. Input Reference Model when VRS = 1 .................................................................... 25

Figure 10. Input Reference Model when VRS = 0 .................................................................. 25

Figure 11. Self-calibration of Offset......................................................................................... 32

Figure 12. Self-calibration of Gain........................................................................................... 32

Figure 13. System Calibration of Offset .................................................................................. 32

Figure 14. System Calibration of Gain .................................................................................... 32

Figure 15. Synchronizing Multiple ADCs................................................................................. 36

Figure 16. Digital Filter Response (Word Rate = 60 Sps) ....................................................... 38

Figure 17. 120 Sps Filter Magnitude Plot to 120 Hz ............................................................... 38

Figure 18. 120 Sps Filter Phase Plot to 120 Hz ...................................................................... 38

Figure 19. Z-Transforms of Digital Filters................................................................................ 38

Figure 20. On-chip Oscillator Model........................................................................................ 39

Figure 21. CS5532 Configured with a Single +5 V Supply ..................................................... 40

Figure 22. CS5532 Configured with ±2.5 V Analog Supplies.................................................. 41

Figure 23. CS5532 Configured with ±3 V Analog Supplies..................................................... 41

Figure 24. CS5532 Configured for Thermocouple Measurement ........................................... 42

Figure 25. Bridge with Series Resistors .................................................................................. 42

LIST OF TABLES

Table 1. Conversion Timing – Single Mode ............................................................................ 34

Table 2. Conversion Timing – Continuous Mode .................................................................... 34

Table 3. Command Byte Pointer ............................................................................................. 35

Table 4. Output Coding for 16-bit CS5531 and CS5533......................................................... 36

Table 5. Output Coding for 24-bit CS5532 and CS5534......................................................... 37

DS289F5

3

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