ZHCSAM3B December   2012  – April 2022 ADS54T01

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics
    6. 7.6  Electrical Characteristics
    7. 7.7  Electrical Characteristics
    8. 7.8  Electrical Characteristics
    9. 7.9  Electrical Characteristics
    10. 7.10 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Test Pattern Output
      2. 8.3.2  Clock Inputs
      3. 8.3.3  SNR and Clock Jitter
      4. 8.3.4  Analog Inputs
      5. 8.3.5  Over-Range Indication
      6. 8.3.6  Interleaving Correction
      7. 8.3.7  High-Resolution Output Data
      8. 8.3.8  Low-Resolution Output Data
      9. 8.3.9  Full Speed – 7 Bit
      10. 8.3.10 Decimated Low-Resolution Output Data
      11. 8.3.11 Multi Device Synchronization
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power-Down Modes
      2. 8.4.2 Feedback Mode: Burst Mode
      3. 8.4.3 Receive Mode: Decimation Filter
      4. 8.4.4 Manual Trigger Mode
      5. 8.4.5 Auto Trigger Mode
    5. 8.5 Programming
      1. 8.5.1 Device Initialization
      2. 8.5.2 Serial Register Write
      3. 8.5.3 Serial Register Readout
    6. 8.6 Register Maps
      1. 8.6.1 Serial Register Map
      2. 8.6.2 Description of Serial Interface Registers
  9. 9 Power Supply Recommendations
  10. 10Device and Documentation Support
    1. 10.1 接收文档更新通知
    2. 10.2 支持资源
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 术语表
  11. 11Mechanical, Packaging, and Orderable Information

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8.5.1 Device Initialization

After power up, TI recommends to initialize the device through a hardware reset by applying a logic low pulse on the SRESETb pin (of width greater than 20 ns), as shown in Figure 8-19. This resets all internal digital blocks (including SPI registers) to their default condition.

GUID-554ABAE4-6CC5-4D70-B052-8B5413241E5E-low.gifFigure 8-19 Device Initialization Timing Diagram
Table 8-5 Reset Timing
PARAMETERCONDITIONSMINTYPMAXUNIT
t1Power-on delayDelay from power up to active low RESET pulse3ms
t2Reset pulse widthActive low RESET pulse width20ns
t3Register write delayDelay from RESET disable to SDENb active100ns

Recommended Device Initialization Sequence:

  1. Power up
  2. Reset ADS54T01 using hardware reset.
  3. Apply clock and input signal.
  4. Set register 0x01 bit D15 to "1" (ChA Corr EN) to enable gain/offset correction circuit and other desired registers.
  5. Set register 0x03 bit D14 to "1" (Start Auto Corr ChA). This clears and resets the accumulator values in the DC and gain correction loop.
  6. Set register 0x03 bit D14 to "0" (Start Auto Corr ChA). This starts the DC and gain auto-correction loop.