ZHCSGI8A April   2017  – October 2021 ADC12D1620QML-SP

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and 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  Converter Electrical Characteristics: Static Converter Characteristics
    6. 6.6  Converter Electrical Characteristics: Dynamic Converter Characteristics
    7. 6.7  Converter Electrical Characteristics: Analog Input/Output and Reference Characteristics
    8. 6.8  Converter Electrical Characteristic: Channel-to-Channel Characteristics
    9. 6.9  Converter Electrical Characteristics: LVDS CLK Input Characteristics
    10. 6.10 Electrical Characteristics: AutoSync Feature
    11. 6.11 Converter Electrical Characteristics: Digital Control and Output Pin Characteristics
    12. 6.12 Converter Electrical Characteristics: Power Supply Characteristics
    13. 6.13 Converter Electrical Characteristics: AC Electrical Characteristics
    14. 6.14 Electrical Characteristics: Delta Parameters
    15. 6.15 Timing Requirements: Serial Port Interface
    16. 6.16 Timing Requirements: Calibration
    17. 6.17 Quality Conformance Inspection
    18. 6.18 Timing Diagrams
    19. 6.19 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
      1. 7.1.1 Operation Summary
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Input Control and Adjust
        1. 7.3.1.1 AC- and DC-Coupled Modes
        2. 7.3.1.2 Input Full-Scale Range Adjust
        3. 7.3.1.3 Input Offset Adjust
        4. 7.3.1.4 Low-Sampling Power-Saving Mode (LSPSM)
        5. 7.3.1.5 DES Timing Adjust
        6. 7.3.1.6 Sampling Clock Phase Adjust
      2. 7.3.2 Output Control and Adjust
        1. 7.3.2.1 SDR / DDR Clock
        2. 7.3.2.2 LVDS Output Differential Voltage
        3. 7.3.2.3 LVDS Output Common-Mode Voltage
        4. 7.3.2.4 Output Formatting
        5. 7.3.2.5 Test-Pattern Mode
        6. 7.3.2.6 Time Stamp
      3. 7.3.3 Calibration Feature
        1. 7.3.3.1 Calibration Control Pins and Bits
        2. 7.3.3.2 How to Execute a Calibration
        3. 7.3.3.3 On-Command Calibration
        4. 7.3.3.4 Calibration Adjust
          1. 7.3.3.4.1 Read/Write Calibration Settings
        5. 7.3.3.5 Calibration and Power-Down
        6. 7.3.3.6 Calibration and the Digital Outputs
      4. 7.3.4 Power Down
      5. 7.3.5 Low-Sampling Power-Saving Mode (LSPSM)
    4. 7.4 Device Functional Modes
      1. 7.4.1 DES/Non-DES Mode
      2. 7.4.2 Demux/Non-Demux Mode
    5. 7.5 Programming
      1. 7.5.1 Control Modes
        1. 7.5.1.1 Non-ECM
          1. 7.5.1.1.1  Dual-Edge Sampling Pin (DES)
          2. 7.5.1.1.2  Non-Demultiplexed Mode Pin (NDM)
          3. 7.5.1.1.3  Dual Data-Rate Phase Pin (DDRPh)
          4. 7.5.1.1.4  Calibration Pin (CAL)
          5. 7.5.1.1.5  Low-Sampling Power-Saving Mode Pin (LSPSM)
          6. 7.5.1.1.6  Power-Down I-Channel Pin (PDI)
          7. 7.5.1.1.7  Power-Down Q-Channel Pin (PDQ)
          8. 7.5.1.1.8  Test-Pattern Mode Pin (TPM)
          9. 7.5.1.1.9  Full-Scale Input-Range Pin (FSR)
          10. 7.5.1.1.10 AC- or DC-Coupled Mode Pin (VCMO)
          11. 7.5.1.1.11 LVDS Output Common-Mode Pin (VBG)
        2. 7.5.1.2 Extended Control Mode
          1. 7.5.1.2.1 Serial Interface
    6. 7.6 Register Maps
      1. 7.6.1 Register Definitions
  8. 8 Application Information Disclaimer
    1. 8.1 Application Information
      1. 8.1.1 Analog Inputs
        1. 8.1.1.1 Acquiring the Input
        2. 8.1.1.2 Driving the ADC in DES Mode
        3. 8.1.1.3 FSR and the Reference Voltage
        4. 8.1.1.4 Out-Of-Range Indication
        5. 8.1.1.5 AC-Coupled Input Signals
        6. 8.1.1.6 DC-Coupled Input Signals
        7. 8.1.1.7 Single-Ended Input Signals
      2. 8.1.2 Clock Inputs
        1. 8.1.2.1 CLK Coupling
        2. 8.1.2.2 CLK Frequency
        3. 8.1.2.3 CLK Level
        4. 8.1.2.4 CLK Duty Cycle
        5. 8.1.2.5 CLK Jitter
        6. 8.1.2.6 CLK Layout
      3. 8.1.3 LVDS Outputs
        1. 8.1.3.1 Common-Mode and Differential Voltage
        2. 8.1.3.2 Output Data Rate
        3. 8.1.3.3 Terminating Unused LVDS Output Pins
      4. 8.1.4 Synchronizing Multiple ADC12D1620 Devices in a System
        1. 8.1.4.1 AutoSync Feature
        2. 8.1.4.2 DCLK Reset Feature
      5. 8.1.5 Temperature Sensor
    2. 8.2 Radiation Environments
      1. 8.2.1 Total Ionizing Dose
      2. 8.2.2 Single Event Latch-Up and Functional Interrupt
      3. 8.2.3 Single Event Upset
    3. 8.3 Cold Sparing
  9. 9 Power Supply Recommendations
    1. 9.1 System Power-On Considerations
      1. 9.1.1 Control Pins
      2. 9.1.2 Power On in Non-ECM
      3. 9.1.3 Power On in ECM
      4. 9.1.4 Power-on and Data Clock (DCLK)
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Power Planes
      2. 10.1.2 Bypass Capacitors
      3. 10.1.3 Ground Planes
      4. 10.1.4 Power System Example
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
    4. 10.4 Board Mounting Recommendation
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Device Nomenclature
      2. 11.1.2 第三方产品免责声明
    2. 11.2 接收文档更新通知
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 静电放电警告
    6. 11.6 术语表
  12. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Engineering Samples

7.3.2.5 Test-Pattern Mode

The ADC12D1620 can provide a test pattern at the four output buses, independent of the input signal, that aids in system debug. In test-pattern mode, the ADC is disengaged, and a test pattern generator is connected to the outputs, including ORI and ORQ. The test pattern output is the same in DES mode or non-DES mode. Each port is given a unique 12-bit word, alternating between 1's and 0's. When the device is programmed into the demux mode, the order of the test pattern is described in Table 7-2. If the I or Q channel is powered down, the test pattern is not output for that channel.

Table 7-2 Test Pattern by Output Port in Non-LSPSM Demux Mode
TIMEQdIdQIORQORICOMMENTS
T0000h004h008h010h0b0bPattern Sequence
n
T1FFFhFFBhFF7hFEFh1b1b
T2000h004h008h010h0b0b
T3FFFhFFBhFF7hFEFh1b1b
T4000h004h008h010h0b0b
T5000h004h008h010h0b0bPattern Sequence
n+1
T6FFFhFFBhFF7hFEFh1b1b
T7000h004h008h010h0b0b
T8FFFhFFBhFF7hFEFh1b1b
T9000h004h008h010h0b0b
T10000h004h008h010h0b0bPattern Sequence
n+2
T11FFFhFFBhFF7hFEFh1b1b
T12000h004h008h010h0b0b
T13..................

When the device is programmed into the non-demux mode, the test pattern’s order is described in Table 7-3.

Table 7-3 Test Pattern by Output Port in Non-LSPSM Non-Demux Mode
TIMEQIORQORICOMMENTS
T0000h004h0b0bPattern Sequence
n
T1000h004h0b0b
T2FFFhFFBh1b1b
T3FFFhFFBh1b1b
T4000h004h0b0b
T5FFFhFFBh1b1b
T6000h004h0b0b
T7FFFhFFBh1b1b
T8FFFhFFBh1b1b
T9FFFhFFBh1b1b
T10000h004h0b0bPattern Sequence
n+1
T11000h004h0b0b
T12FFFhFFBh1b1b
T13FFFhFFBh1b1b
T14............
Table 7-4 Test Pattern by Output Port in LSPSM Demux Mode
TIMEQdIdQIORQORICOMMENTS
T0FF7hFEFh008h010h1b1bPattern sequence
n
T1FF7hFEFh008h010h1b1b
T2008h010hFF7hFEFh1b1b
T3008h010hFF7hFEFh1b1b
T4008h010h008h010h0b0b
T5FF7hFEFh008h010h1b1bPattern sequence
n+1
T6FF7hFEFh008h010h1b1b
T7008h010hFF7hFEFh1b1b
T8008h010hFF7hFEFh1b1b
T9008h010h008h010h0b0b
T10FF7hFEFh008h010h1b1bPattern sequence
n+2
T11FF7hFEFh008h010h1b1b
T12008h010hFF7hFEFh1b1b
T13..................
Table 7-5 Test Pattern by Output Port in LSPSM Non-Demux Mode
TIMEQIORQORICOMMENTS
T0008h010h0b0bPattern sequence
n
T1FF7hFEFh1b1b
T2008h010h0b0b
T3FF7hFEFh1b1b
T4008h010h0b0b
T5008h010h0b0bPattern sequence
n+1
T6FF7hFEFh1b1b
T7008h010h0b0b
T8FF7hFEFh1b1b
T9008h010h0b0b
T10008h010h0b0bPattern sequence
n+2
T11FF7hFEFh1b1b
T12008h010h0b0b
T13FF7hFEFh1b1b
T14............