SBASAJ4B June   2022  – October 2024 ADC12QJ1600-EP

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics: DC Specifications
    6. 5.6  Electrical Characteristics: Power Consumption
    7. 5.7  Electrical Characteristics: AC Specifications
    8. 5.8  Switching Characteristics
    9. 5.9  Timing Requirements
    10. 5.10 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Analog Input
        1. 6.3.1.1 Analog Input Protection
        2. 6.3.1.2 Full-Scale Voltage (VFS) Adjustment
        3. 6.3.1.3 Analog Input Offset Adjust
        4. 6.3.1.4 ADC Core
          1. 6.3.1.4.1 ADC Theory of Operation
          2. 6.3.1.4.2 ADC Core Calibration
          3. 6.3.1.4.3 Analog Reference Voltage
          4. 6.3.1.4.4 ADC Over-range Detection
          5. 6.3.1.4.5 Code Error Rate (CER)
      2. 6.3.2 Temperature Monitoring Diode
      3. 6.3.3 Timestamp
      4. 6.3.4 Clocking
        1. 6.3.4.1 Converter PLL (C-PLL) for Sampling Clock Generation
        2. 6.3.4.2 LVDS Clock Outputs (PLLREFO±, TRIGOUT±)
        3. 6.3.4.3 Optional CMOS Clock Outputs (ORC, ORD)
        4. 6.3.4.4 SYSREF for JESD204C Subclass-1 Deterministic Latency
          1. 6.3.4.4.1 SYSREF Capture for Multi-Device Synchronization and Deterministic Latency
          2. 6.3.4.4.2 SYSREF Position Detector and Sampling Position Selection (SYSREF Windowing)
      5. 6.3.5 JESD204C Interface
        1. 6.3.5.1  Transport Layer
        2. 6.3.5.2  Scrambler
        3. 6.3.5.3  Link Layer
        4. 6.3.5.4  8B or 10B Link Layer
          1. 6.3.5.4.1 Data Encoding (8B or 10B)
          2. 6.3.5.4.2 Multiiframes and the Local Multiframe Clock (LMFC)
          3. 6.3.5.4.3 Code Group Synchronization (CGS)
          4. 6.3.5.4.4 Initial Lane Alignment Sequence (ILAS)
          5. 6.3.5.4.5 Frame and Multiframe Monitoring
        5. 6.3.5.5  64B or 66B Link Layer
          1. 6.3.5.5.1 64B or 66B Encoding
          2. 6.3.5.5.2 Multiblocks, Extended Multiblocks and the Local Extended Multiblock Clock (LEMC)
            1. 6.3.5.5.2.1 Block, Multiblock and Extended Multiblock Alignment using Sync Header
              1. 6.3.5.5.2.1.1 Cyclic Redundancy Check (CRC) Mode
              2. 6.3.5.5.2.1.2 Forward Error Correction (FEC) Mode
          3. 6.3.5.5.3 Initial Lane Alignment
          4. 6.3.5.5.4 Block, Multiblock and Extended Multiblock Alignment Monitoring
        6. 6.3.5.6  Physical Layer
          1. 6.3.5.6.1 SerDes Pre-Emphasis
        7. 6.3.5.7  JESD204C Enable
        8. 6.3.5.8  Multi-Device Synchronization and Deterministic Latency
        9. 6.3.5.9  Operation in Subclass 0 Systems
        10. 6.3.5.10 Alarm Monitoring
          1. 6.3.5.10.1 Clock Upset Detection
          2. 6.3.5.10.2 FIFO Upset Detection
    4. 6.4 Device Functional Modes
      1. 6.4.1 Low Power Mode and High Performance Mode
      2. 6.4.2 JESD204C Modes
        1. 6.4.2.1 JESD204C Transport Layer Data Formats
        2. 6.4.2.2 64B or 66B Sync Header Stream Configuration
        3. 6.4.2.3 Redundant Data Mode (Alternate Lanes)
      3. 6.4.3 Power-Down Modes
      4. 6.4.4 Test Modes
        1. 6.4.4.1 Serializer Test-Mode Details
        2. 6.4.4.2 PRBS Test Modes
        3. 6.4.4.3 Clock Pattern Mode
        4. 6.4.4.4 Ramp Test Mode
        5. 6.4.4.5 Short and Long Transport Test Mode
          1. 6.4.4.5.1 Short Transport Test Pattern
        6. 6.4.4.6 D21.5 Test Mode
        7. 6.4.4.7 K28.5 Test Mode
        8. 6.4.4.8 Repeated ILA Test Mode
        9. 6.4.4.9 Modified RPAT Test Mode
      5. 6.4.5 Calibration Modes and Trimming
        1. 6.4.5.1 Foreground Calibration Mode
        2. 6.4.5.2 Background Calibration Mode
        3. 6.4.5.3 Low-Power Background Calibration (LPBG) Mode
      6. 6.4.6 Offset Calibration
      7. 6.4.7 Trimming
    5. 6.5 Programming
      1. 6.5.1 Using the Serial Interface
      2. 6.5.2 SCS
      3. 6.5.3 SCLK
      4. 6.5.4 SDI
      5. 6.5.5 SDO
      6. 6.5.6 Streaming Mode
      7. 6.5.7 SPI_Register_Map Registers
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Light Detection and Ranging (LiDAR) Digitizer
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 Analog Front-End Requirements
          2. 7.2.1.2.2 Calculating Clock and SerDes Frequencies
        3. 7.2.1.3 Application Curves
    3. 7.3 Initialization Set Up
    4. 7.4 Power Supply Recommendations
      1. 7.4.1 Power Sequencing
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.1 Analog Input

The analog input of the device has an internal buffer to enable high input bandwidth and to isolate sampling capacitor glitch noise from the input circuit. The analog input must be driven differentially because operation with a single-ended signal results in degraded performance. Both AC-coupling and DC-coupling of the analog input is supported. The analog input is designed for an input common-mode voltage (VCMI) of 1.1 V, which is terminated internally through single-ended, 50-Ω resistors to the VA11 supply on each input pin. DC-coupled input signals must have a common-mode voltage that meets the device input common-mode requirements specified as VCMI in the Recommended Operating Conditions table. The device includes internal analog input protection to protect the ADC input during over-range input conditions; see the Analog Input Protection section. Figure 6-2 provides a simplified analog input model.

ADC12QJ1600-EP Analog Input Internal Termination and Protection DiagramFigure 6-2 Analog Input Internal Termination and Protection Diagram