CS5521/22/23/24/28
4 DS317F8
LIST OF FIGURES
Figure 1. Continuous Running SCLK Timing (Not to Scale) ......................................................... 12
Figure 2. SDI Write Timing (Not to Scale)..................................................................................... 12
Figure 3. SDO Read Timing (Not to Scale)................................................................................... 12
Figure 4. Multiplexer Configurations.............................................................................................. 13
Figure 5. Input Models for AIN+ and AIN- pins, ≤100 mV Input Ranges....................................... 14
Figure 6. Input Models for AIN+ and AIN- pins, >100 mV input ranges ........................................ 14
Figure 7. Input Ranges Greater than 5 V ...................................................................................... 16
Figure 8. Input Model for VREF+ and VREF- Pins........................................................................ 16
Figure 9. CS5523/24 Register Diagram ........................................................................................ 17
Figure 10. Command and Data Word Timing................................................................................ 25
Figure 11. Self Calibration of Offset (Low Ranges)....................................................................... 32
Figure 12. Self Calibration of Offset (High Ranges)...................................................................... 32
Figure 13. Self Calibration of Gain (All Ranges) ........................................................................... 32
Figure 14. System Calibration of Offset (Low Ranges)................................................................. 32
Figure 15. System Calibration of Offset (High Ranges) ................................................................ 33
Figure 16. System Calibration of Gain (Low Ranges)................................................................... 33
Figure 17. System Calibration of Gain (High Ranges) .................................................................. 33
Figure 18. Filter Response (Normalized to Output Word Rate = 15 Sps) .....................................42
Figure 19. Typical Linearity Error for CS5521/23.......................................................................... 42
Figure 20. Typical Linearity Error for CS5522/24/28..................................................................... 42
Figure 21. CS5522 Configured to use on-chip charge pump to supply NBV ................................ 43
Figure 22. CS5522 Configured for ground-referenced Unipolar Signals....................................... 44
Figure 23. CS5522 Configured for Single Supply Bridge Measurement....................................... 44
Figure 24. Charge Pump Drive Circuit for VD+ = 3 V.................................................................... 45
Figure 25. Alternate NBV Circuits ................................................................................................. 45
LIST OF TABLES
Table 1. Relationship between Full Scale Input, Gain Factors, and Internal Analog
Signal Limitations .............................................................................................................15
Table 2. Command Register Quick Reference.............................................................................. 19
Table 3. Channel-Setup Registers ................................................................................................27
Table 4. Configuration Register..................................................................................................... 30
Table 5. Offset and Gain Registers............................................................................................... 31
Table 6. Output Coding for 16-bit CS5521/23 and 24-bit CS5522/24/28...................................... 40
