SBAS761A February   2020  – February 2020 ADS8355

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Block Diagram
  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. Table 1. Timing Requirements
    7. Table 2. Switching Characteristics
    8. 6.6      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 Reference
      2. 7.3.2 Analog Inputs
        1. 7.3.2.1 Analog Input: Full-Scale Range Selection
        2. 7.3.2.2 Analog Input: Single-Ended and Pseudo-Differential Configurations
      3. 7.3.3 Transfer Function
    4. 7.4 Device Functional Modes
      1. 7.4.1 Conversion Data Read: Dual-SDO Mode (Default)
      2. 7.4.2 Conversion Data Read: Single-SDO Mode
      3. 7.4.3 Low-Power Modes
        1. 7.4.3.1 STANDBY Mode
        2. 7.4.3.2 PD (Power-Down) Mode
    5. 7.5 Programming
      1. 7.5.1 Register Read/Write Operation
    6. 7.6 Register Map
      1. 7.6.1 ADS8355 Registers
        1. 7.6.1.1  PD_STANDBY Register (Offset = 4h) [reset = 0h]
          1. Table 9. PD_STANDBY Register Field Descriptions
        2. 7.6.1.2  PD_KEY Register (Offset = 5h) [reset = 0h]
          1. Table 10. PD_KEY Register Field Descriptions
        3. 7.6.1.3  SDO_CTRL Register (Offset = Dh) [reset = 0h]
          1. Table 11. SDO_CTRL Register Field Descriptions
        4. 7.6.1.4  DATA_OUT_CTRL Register (Offset = 11h) [reset = 0h]
          1. Table 12. DATA_OUT_CTRL Register Field Descriptions
        5. 7.6.1.5  REF_SEL Register (Offset = 20h) [reset = 0h]
          1. Table 13. REF_SEL Register Field Descriptions
        6. 7.6.1.6  REFDAC_A_LSB Register (Offset = 24h) [reset = 0h]
          1. Table 14. REFDAC_A_LSB Register Field Descriptions
        7. 7.6.1.7  REFDAC_A_MSB Register (Offset = 25h) [reset = 0h]
          1. Table 15. REFDAC_A_MSB Register Field Descriptions
        8. 7.6.1.8  REFDAC_B_LSB Register (Offset = 26h) [reset = 0h]
          1. Table 16. REFDAC_B_LSB Register Field Descriptions
        9. 7.6.1.9  REFDAC_B_MSB Register (Offset = 27h) [reset = 0h]
          1. Table 17. REFDAC_B_MSB Register Field Descriptions
        10. 7.6.1.10 INPUT_CONFIG Register (Offset = 28h) [reset = 0h]
          1. Table 18. INPUT_CONFIG Register Field Descriptions
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Input Amplifier Selection
      2. 8.1.2 Charge Kickback Filter
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    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

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SUPPLY
AVDD Analog supply voltage (AVDD to AGND) VREF range, internal reference 4.5 5 5.5 V
VREF range, external reference VREF < 4.5 V 4.5 5 5.5
VREF range, external reference VREF > 4.5 V VREF 5 5.5
2 x VREF range, internal reference 5 5 5.5
2 x VREF range, external reference 2 x VREF 5 5.5
DVDD Digital supply voltage 1.65 3.3 5.5 V
ANALOG INPUTS (Single-Ended Configuration)
FSR Full-scale input range (AINP_x to AINM_x)(1) VREF range 0 VREF V
2 x VREF range 0 2 x VREF
VINP Absolute input voltage (AINP_x to REFGND_x)(2) VREF range 0 VREF  V
2 x VREF range, AVDD ≥ 2 x VREF  0 2 x VREF 
VINM Absolute input voltage (AINM_x to REFGND_x) –0.1 0.1 V
ANALOG INPUTS (Pseudo-Differential Configuration)
FSR Full-scale input range (AINP_x to AINM_x)(1) VREF range –VREF / 2 VREF / 2 V
2 x VREF range –VREF VREF
VINP Absolute input voltage (AINP_x to REFGND_x) VREF range 0 VREF  V
2 x VREF range 0 2 x VREF 
VINM Absolute input voltage (AINM_x -REFGND_x) VREF range VREF / 2 – 0.1 VREF / 2 VREF / 2 + 0.1 V
2 x VREF range VREF – 0.1 VREF VREF + 0.1
EXTERNAL REFERENCE INPUT
VREFIO REFIO_x(3) input voltage VREF range 2.4 2.5 AVDD  V
2 x VREF range 2.4 2.5 AVDD / 2
TEMPERATURE RANGE
TA Ambient temperature –40 25 125 °C
(1) AINP_x refers to analog input pins AINP_A and AINP_B. AINM_x refers to analog input pins AINM_A and AINM_B.
(2) REFGND_x refers to reference ground pins REFGND_A and REFGND_B.
(3) REFIO_x refers to voltage reference inputs REFIO_A and REFIO_B.