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

5 Pin Configuration and Functions

RTE Package
16-Pin WQFN
Top View

Pin Functions

NAME NO. TYPE DESCRIPTION
AINM_A 16 Analog input Negative analog input, channel A
AINM_B 5 Analog input Negative analog input, channel B
AINP_A 15 Analog input Positive analog input, channel A
AINP_B 6 Analog input Positive analog input, channel B
AVDD 14 Power supply Supply voltage for ADC operation
CS 9 Digital input Chip-select signal; active low
DVDD 7 Digital I/O supply Digital I/O supply
GND 13 Power supply Device ground
REFGND_A 2 Power supply Reference A ground
REFGND_B 3 Power supply Reference B ground
REFIO_A 1 Analog input/output Reference voltage input/output, channel A
REFIO_B 4 Analog input/output Reference voltage input/output, channel B
SCLK 10 Digital input Clock for serial communication
SDI 8 Digital input Data input for serial communication
SDO_A 11 Digital output Data output A for serial communication, channel A and channel B
SDO_B 12 Digital output Data output B for serial communication, channel B
Thermal pad Power supply Exposed thermal pad. TI recommends connecting this pin to the printed circuit board (PCB) ground.