SBAS707B June   2016  – January 2018 ADS8910B , ADS8912B , ADS8914B

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Ease of System Design With ADS89xxB Integrated Features
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 LDO Module
      2. 7.3.2 Reference Buffer Module
      3. 7.3.3 Converter Module
        1. 7.3.3.1 Sample-and-Hold Circuit
        2. 7.3.3.2 Internal Oscillator
        3. 7.3.3.3 ADC Transfer Function
      4. 7.3.4 Interface Module
    4. 7.4 Device Functional Modes
      1. 7.4.1 RST State
      2. 7.4.2 ACQ State
      3. 7.4.3 CNV State
    5. 7.5 Programming
      1. 7.5.1 Output Data Word
      2. 7.5.2 Data Transfer Frame
      3. 7.5.3 Interleaving Conversion Cycles and Data Transfer Frames
      4. 7.5.4 Data Transfer Protocols
        1. 7.5.4.1 Protocols for Configuring the Device
        2. 7.5.4.2 Protocols for Reading From the Device
          1. 7.5.4.2.1 Legacy, SPI-Compatible (SYS-xy-S) Protocols
          2. 7.5.4.2.2 SPI-Compatible Protocols with Bus Width Options
          3. 7.5.4.2.3 Source-Synchronous (SRC) Protocols
            1. 7.5.4.2.3.1 Output Clock Source Options with SRC Protocols
            2. 7.5.4.2.3.2 Bus Width Options With SRC Protocols
            3. 7.5.4.2.3.3 Output Data Rate Options With SRC Protocols
      5. 7.5.5 Device Setup
        1. 7.5.5.1 Single Device: All multiSPI Options
        2. 7.5.5.2 Single Device: Minimum Pins for a Standard SPI Interface
        3. 7.5.5.3 Multiple Devices: Daisy-Chain Topology
        4. 7.5.5.4 Multiple Devices: Star Topology
    6. 7.6 Register Maps
      1. 7.6.1 Device Configuration and Register Maps
        1. 7.6.1.1 PD_CNTL Register (address = 04h) [reset = 00h]
          1. Table 11. PD_CNTL Register Field Descriptions
        2. 7.6.1.2 SDI_CNTL Register (address = 008h) [reset = 00h]
          1. Table 12. SDI_CNTL Register Field Descriptions
        3. 7.6.1.3 SDO_CNTL Register (address = 0Ch) [reset = 00h]
          1. Table 13. SDO_CNTL Register Field Descriptions
        4. 7.6.1.4 DATA_CNTL Register (address = 010h) [reset = 00h]
          1. Table 14. DATA_CNTL Register Field Descriptions
        5. 7.6.1.5 PATN_LSB Register (address = 014h) [reset = 00h]
          1. Table 15. PATN_LSB Register Field Descriptions
        6. 7.6.1.6 PATN_MID Register (address = 015h) [reset = 00h]
          1. Table 16. PATN_MID Register Field Descriptions
        7. 7.6.1.7 PATN_MSB Register (address = 016h) [reset = 00h]
          1. Table 17. PATN_MSB Register Field Descriptions
        8. 7.6.1.8 OFST_CAL Register (address = 020h) [reset = 00h]
          1. Table 18. OFST_CAL Register Field Descriptions
        9. 7.6.1.9 REF_MRG Register (address = 030h) [reset = 00h]
          1. Table 19. REF_MRG Register Field Descriptions
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 ADC Reference Driver
      2. 8.1.2 ADC Input Driver
        1. 8.1.2.1 Charge-Kickback Filter
        2. 8.1.2.2 Input Amplifier Selection
    2. 8.2 Typical Application
      1. 8.2.1 Data Acquisition (DAQ) Circuit for Lowest Distortion and Noise Performance With Differential Input
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 DAQ Circuit With FDA Input Driver and Single-Ended or Differential Input
      3. 8.2.3 Design Requirements
      4. 8.2.4 Detailed Design Procedure
      5. 8.2.5 Application Curves
  9. 9 Power-Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Signal Path
      2. 10.1.2 Grounding and PCB Stack-Up
      3. 10.1.3 Decoupling of Power Supplies
      4. 10.1.4 Reference Decoupling
      5. 10.1.5 Differential Input Decoupling
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.8 Typical Characteristics

at TA = 25°C, RVDD = 5.5 V, DVDD = 3 V, VREF = 5 V, and maximum-rated throughput (unless otherwise noted)
ADS8910B ADS8912B ADS8914B D001_SBAS707.gif
Typical DNL = ±0.4 LSB
Figure 6. Typical DNL
ADS8910B ADS8912B ADS8914B D007_SBAS707.gif
1000 devices
Figure 8. Typical DNL Distribution
ADS8910B ADS8912B ADS8914B D003_SBAS707.gif
Figure 10. DNL vs Temperature
ADS8910B ADS8912B ADS8914B D005_SBAS707.gif
Figure 12. DNL vs Reference Voltage
ADS8910B ADS8912B ADS8914B D019_SBAS707.gif
4000 devices
Figure 14. Typical Offset Distribution
ADS8910B ADS8912B ADS8914B D020_SBAS707.gif
REF_SEL[2:0] = 000b
Figure 16. Offset vs Temperature
ADS8910B ADS8912B ADS8914B D023_SBAS707.gif
EN_MARG = 0b
Figure 18. Gain Error vs Temperature
ADS8910B ADS8912B ADS8914B D009_SBAS707.gif
Standard Deviation = 0.65 LSB
Figure 20. DC Input Histogram
ADS8910B ADS8912B ADS8914B D013_SBAS707.gif
fIN = 2 kHz
Figure 22. Noise Performance vs Temperature
ADS8910B ADS8912B ADS8914B D015_SBAS707.gif
fIN = 2 kHz
Figure 24. Noise Performance vs Reference Voltage
ADS8910B ADS8912B ADS8914B D017_SBAS707.gif
Figure 26. Noise Performance vs Input Frequency
ADS8910B ADS8912B ADS8914B D026_SBAS707.gif
Figure 28. Analog Supply Current vs Supply Voltage
ADS8910B ADS8912B ADS8914B D002_SBAS707.gif
Typical INL = ±0.5 LSB
Figure 7. Typical INL
ADS8910B ADS8912B ADS8914B D008_SBAS707.gif
1000 devices
Figure 9. Typical INL Distribution
ADS8910B ADS8912B ADS8914B D004_SBAS707.gif
Figure 11. INL vs Temperature
ADS8910B ADS8912B ADS8914B D006_SBAS707.gif
Figure 13. INL vs Reference Voltage
ADS8910B ADS8912B ADS8914B D022_SBAS707.gif
4000 devices
Figure 15. Typical Gain Error Distribution
ADS8910B ADS8912B ADS8914B D021_SBAS707.gif
With appropriate REF_SEL[2:0], see OFST_CAL
Figure 17. Offset vs Reference Voltage
ADS8910B ADS8912B ADS8914B D024_SBAS707.gif
EN_MARG = 0b
Figure 19. Gain Error vs Reference Voltage
ADS8910B ADS8912B ADS8914B D011_SBAS707.gif
fIN = 2 kHz SNR = 102.8 dB THD = –125 dB
Figure 21. Typical FFT
ADS8910B ADS8912B ADS8914B D014_SBAS707.gif
fIN = 2 kHz
Figure 23. Distortion Performance vs Temperature
ADS8910B ADS8912B ADS8914B D016_SBAS707.gif
fIN = 2 kHz
Figure 25. Distortion Performance vs Reference Voltage
ADS8910B ADS8912B ADS8914B D018_SBAS707.gif
Figure 27. Distortion Performance vs Input Frequency
ADS8910B ADS8912B ADS8914B D028_SBAS707.gif
RVDD = 5 V
Figure 29. Analog Supply Current vs Temperature