SLVSDR2C November   2018  – March 2025 ADC12DJ3200QML-SP

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 (Dual-Channel Mode)
    8. 5.8  Electrical Characteristics: AC Specifications (Single-Channel Mode)
    9. 5.9  Timing Requirements
    10. 5.10 Switching Characteristics
    11. 5.11 Timing Diagrams
    12. 5.12 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 Inputs
        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
      2. 6.3.2 ADC Core
        1. 6.3.2.1 ADC Theory of Operation
        2. 6.3.2.2 ADC Core Calibration
        3. 6.3.2.3 ADC Overrange Detection
        4. 6.3.2.4 Code Error Rate (CER)
      3. 6.3.3 Timestamp
      4. 6.3.4 Clocking
        1. 6.3.4.1 Noiseless Aperture Delay Adjustment (tAD Adjust)
        2. 6.3.4.2 Aperture Delay Ramp Control (TAD_RAMP)
        3. 6.3.4.3 SYSREF Capture for Multi-Device Synchronization and Deterministic Latency
          1. 6.3.4.3.1 SYSREF Position Detector and Sampling Position Selection (SYSREF Windowing)
          2. 6.3.4.3.2 Automatic SYSREF Calibration
      5. 6.3.5 Digital Down Converters (Dual-Channel Mode Only)
        1. 6.3.5.1 Numerically-Controlled Oscillator and Complex Mixer
          1. 6.3.5.1.1 NCO Fast Frequency Hopping (FFH)
          2. 6.3.5.1.2 NCO Selection
          3. 6.3.5.1.3 Basic NCO Frequency Setting Mode
          4. 6.3.5.1.4 Rational NCO Frequency Setting Mode
          5. 6.3.5.1.5 NCO Phase Offset Setting
          6. 6.3.5.1.6 NCO Phase Synchronization
        2. 6.3.5.2 Decimation Filters
        3. 6.3.5.3 Output Data Format
        4. 6.3.5.4 Decimation Settings
          1. 6.3.5.4.1 Decimation Factor
          2. 6.3.5.4.2 DDC Gain Boost
      6. 6.3.6 JESD204B Interface
        1. 6.3.6.1 Transport Layer
        2. 6.3.6.2 Scrambler
        3. 6.3.6.3 Link Layer
          1. 6.3.6.3.1 Code Group Synchronization (CGS)
          2. 6.3.6.3.2 Initial Lane Alignment Sequence (ILAS)
          3. 6.3.6.3.3 8b, 10b Encoding
          4. 6.3.6.3.4 Frame and Multiframe Monitoring
        4. 6.3.6.4 Physical Layer
          1. 6.3.6.4.1 SerDes Pre-Emphasis
        5. 6.3.6.5 JESD204B Enable
        6. 6.3.6.6 Multi-Device Synchronization and Deterministic Latency
        7. 6.3.6.7 Operation in Subclass 0 Systems
      7. 6.3.7 Alarm Monitoring
        1. 6.3.7.1 NCO Upset Detection
        2. 6.3.7.2 Clock Upset Detection
      8. 6.3.8 Temperature Monitoring Diode
      9. 6.3.9 Analog Reference Voltage
    4. 6.4 Device Functional Modes
      1. 6.4.1 Dual-Channel Mode
      2. 6.4.2 Single-Channel Mode (DES Mode)
      3. 6.4.3 JESD204B Modes
        1. 6.4.3.1 JESD204B Output Data Formats
        2. 6.4.3.2 Dual DDC and Redundant Data Mode
      4. 6.4.4 Power-Down Modes
      5. 6.4.5 Test Modes
        1. 6.4.5.1 Serializer Test-Mode Details
        2. 6.4.5.2 PRBS Test Modes
        3. 6.4.5.3 Ramp Test Mode
        4. 6.4.5.4 Short and Long Transport Test Mode
          1. 6.4.5.4.1 Short Transport Test Pattern
          2. 6.4.5.4.2 Long Transport Test Pattern
        5. 6.4.5.5 D21.5 Test Mode
        6. 6.4.5.6 K28.5 Test Mode
        7. 6.4.5.7 Repeated ILA Test Mode
        8. 6.4.5.8 Modified RPAT Test Mode
      6. 6.4.6 Calibration Modes and Trimming
        1. 6.4.6.1 Foreground Calibration Mode
        2. 6.4.6.2 Background Calibration Mode
        3. 6.4.6.3 Low-Power Background Calibration (LPBG) Mode
      7. 6.4.7 Offset Calibration
      8. 6.4.8 Trimming
      9. 6.4.9 Offset Filtering
    5. 6.5 Programming
      1. 6.5.1 Using the Serial Interface
        1. 6.5.1.1 SCS
        2. 6.5.1.2 SCLK
        3. 6.5.1.3 SDI
        4. 6.5.1.4 SDO
        5. 6.5.1.5 Streaming Mode
    6. 6.6 Register Maps
      1. 6.6.1 Register Descriptions
      2. 6.6.2 SYSREF Calibration Registers (0x2B0 to 0x2BF)
      3. 6.6.3 Alarm Registers (0x2C0 to 0x2C2)
  8. 7 Application Information Disclaimer
    1. 7.1 Application Information
      1. 7.1.1 Analog Inputs
      2. 7.1.2 Analog Input Bandwidth
      3. 7.1.3 Clocking
      4. 7.1.4 Radiation Environment Recommendations
        1. 7.1.4.1 Single Event Latch-Up (SEL)
        2. 7.1.4.2 Single Event Functional Interrupt (SEFI)
        3. 7.1.4.3 Single Event Upset (SEU)
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 RF Input Signal Path
        2. 7.2.2.2 Calculating Values of AC-Coupling Capacitors
      3. 7.2.3 Application Curves
    3. 7.3 Initialization Set Up
    4.     Power Supply Recommendations
      1. 7.4.1 Power Sequencing
    5. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Third-Party Products Disclaimer
    4. 8.4 Receiving Notification of Documentation Updates
    5. 8.5 Support Resources
    6. 8.6 Trademarks
    7. 8.7 Electrostatic Discharge Caution
    8. 8.8 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

7.2.3 Application Curves

The ADC12DJ3200QML-SP can be used in a number of different operating modes to suit multiple applications. Single-tone and two-tone performance is shown in detail in the Section 5 section. Noise-power ratio (NPR) is a performance metric that is often used to quantify performance of a wideband multi-channel receiver. These systems receive a large number of closely spaced signals that are uncorrelated. The summation of these uncorrelated signals forms a signal that looks like a normally (Gaussian) distributed noise source and NPR attempts to quantify performance for this type of signal. NPR measures the ratio of noise power in a notched band to the signal power in an equal size band. Figure 7-2 shows an example NPR measurement in dual-channel mode. The input signal spans from 100MHz to 1.5GHz and the notch is 45MHz wide centered at a frequency of 839.7MHz. The input power is swept to find the optimal RMS noise loading which is the input power where the NPR is at a maximum. The peak NPR, occurring at the optimal input power loading, becomes the desired operating point for wideband multi-channel receivers with normally distributed input signals. An input power sweep for dual-channel mode is shown in Figure 7-3 which shows the peak NPR of 45.2dB occurring at the optimal loading of –12.6dB relative to the peak (saturated) input power of the ADC. This peak NPR roughly corresponds to the performance of an 8.8-bit ADC, so the effective number of bits (ENOB) is 8.8 bits. Example measurements in single-channel mode are shown in Figure 7-4 and Figure 7-5. The signal generator output was limited to 1.5GHz to achieve sufficient output power to saturate the ADC input for the single-channel mode measurement. The NPR calculation compensates for the limited signal bandwidth.

ADC12DJ3200QML-SP Example NPR Measurement at Optimal Loading for ADC12DJ3200QML-SP in Dual-Channel Mode
JMODE 3 , fS = 3200MSPS, signal band is 100MHz to 1500MHz, notch center frequency = 839.7MHz, notch bandwidth = 45MHz
Figure 7-2 Example NPR Measurement at Optimal Loading for ADC12DJ3200QML-SP in Dual-Channel Mode
ADC12DJ3200QML-SP Example NPR Measurement at Optimal Loading for ADC12DJ3200QML-SP in Single-Channel Mode
JMODE 1 , fS = 6400MSPS, signal band is 100MHz to 1500MHz, notch center frequency = 839.7MHz, notch bandwidth = 45MHz
Figure 7-4 Example NPR Measurement at Optimal Loading for ADC12DJ3200QML-SP in Single-Channel Mode
ADC12DJ3200QML-SP NPR vs Input RMS Noise Loading in Dual-Channel Mode
JMODE 3 , fS = 3200MSPS, signal band is 100MHz to 1500MHz, notch center frequency = 839.7MHz, notch bandwidth = 45MHz, peak NPR = 45.2dB at noise loading of -12.6dB
Figure 7-3 NPR vs Input RMS Noise Loading in Dual-Channel Mode
ADC12DJ3200QML-SP NPR vs Input RMS Noise Loading in Single-Channel Mode
JMODE 1 , fS = 6400MSPS, signal band is 100MHz to 1500MHz, notch center frequency = 839.7MHz, notch bandwidth = 45MHz, peak NPR = 45.4dB at noise loading of -12.4dB
Figure 7-5 NPR vs Input RMS Noise Loading in Single-Channel Mode