SBAS807B January   2017  – December 2021 ADS58J64

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  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  Electrical Characteristics
    6. 6.6  AC Performance
    7. 6.7  Digital Characteristics
    8. 6.8  Timing Characteristics
    9. 6.9  Typical Characteristics: 14-Bit Burst Mode
    10. 6.10 Typical Characteristics: Mode 2
    11. 6.11 Typical Characteristics: Mode 0
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Analog Inputs
      2. 7.3.2 Recommended Input Circuit
      3. 7.3.3 Clock Input
    4. 7.4 Device Functional Modes
      1. 7.4.1 Digital Features
        1. 7.4.1.1  Numerically Controlled Oscillators (NCOs) and Mixers
        2. 7.4.1.2  Decimation Filter
          1. 7.4.1.2.1 Stage-1 Filter
          2. 7.4.1.2.2 Stage-2 Filter
        3. 7.4.1.3  Mode 0: Decimate-by-4 With IQ Outputs and fS / 4 Mixer
        4. 7.4.1.4  Mode 1: Decimate-by-4 With IQ Outputs and 16-Bit NCO
        5. 7.4.1.5  Mode 2: Decimate-by-4 With Real Output
        6. 7.4.1.6  Mode 3: Decimate-by-2 Real Output With Frequency Shift
        7. 7.4.1.7  Mode 4: Decimate-by-4 With Real Output
        8. 7.4.1.8  Mode 6: Decimate-by-4 With IQ Outputs for up to 110 MHz of IQ Bandwidth
        9. 7.4.1.9  Mode 7: Decimate-by-4 With Real Output and Zero Stuffing
        10. 7.4.1.10 Mode 8: Burst Mode
        11. 7.4.1.11 Trigger Input
        12. 7.4.1.12 Manual Trigger Mode
        13. 7.4.1.13 Auto Trigger Mode
        14. 7.4.1.14 Overrange Indication
    5. 7.5 Programming
      1. 7.5.1 JESD204B Interface
      2. 7.5.2 JESD204B Initial Lane Alignment (ILA)
      3. 7.5.3 JESD204B Frame Assembly
      4. 7.5.4 JESD Output Switch
        1. 7.5.4.1 SerDes Transmitter Interface
        2. 7.5.4.2 SYNCb Interface
        3. 7.5.4.3 Eye Diagram
      5. 7.5.5 Device Configuration
        1. 7.5.5.1 Details of the Serial Interface
          1. 7.5.5.1.1 Register Initialization
        2. 7.5.5.2 Serial Register Write
        3. 7.5.5.3 Serial Read
    6. 7.6 Register Maps
      1. 7.6.1 Register Map
        1. 7.6.1.1 Register Description
          1. 7.6.1.1.1 GLOBAL Page Register Description
            1. 7.6.1.1.1.1 Register 00h (address = 00h) [reset = 0h], GLOBAL Page
            2. 7.6.1.1.1.2 Register 04h (address = 04h) [reset = 0h], GLOBAL Page
            3. 7.6.1.1.1.3 Register 11h (address = 11h) [reset = 0h], GLOBAL Page
            4. 7.6.1.1.1.4 Register 12h (address = 12h) [reset = 0h], GLOBAL Page
            5. 7.6.1.1.1.5 Register 13h (address = 13h) [reset = 0h], GLOBAL Page
          2. 7.6.1.1.2 DIGTOP Page Register Description
            1. 7.6.1.1.2.1  Register 64h (address = 64h) [reset = 0h], DIGTOP Page
            2. 7.6.1.1.2.2  Register 8Dh (address = 8Dh) [reset = 0h], DIGTOP Page
            3. 7.6.1.1.2.3  Register 8Eh (address = 8Eh) [reset = 0h], DIGTOP Page
            4. 7.6.1.1.2.4  Register 8Fh (address = 8Fh) [reset = 0h], DIGTOP Page
            5. 7.6.1.1.2.5  Register 90h (address = 90h) [reset = 0h], DIGTOP Page
            6. 7.6.1.1.2.6  Register 91h (address = 91h) [reset = 0h], DIGTOP Page
            7. 7.6.1.1.2.7  Register ABh (address = ABh) [reset = 0h], DIGTOP Page
            8. 7.6.1.1.2.8  Register ACh (address = ACh) [reset = 0h], DIGTOP Page
            9. 7.6.1.1.2.9  Register ADh (address = ADh) [reset = 0h], DIGTOP Page
            10. 7.6.1.1.2.10 Register AEh (address = AEh) [reset = 0h], DIGTOP Page
            11. 7.6.1.1.2.11 Register B7h (address = B7h) [reset = 0h], DIGTOP Page
          3. 7.6.1.1.3 ANALOG Page Register Description
            1. 7.6.1.1.3.1  Register 6Ah (address = 6Ah) [reset = 0h], ANALOG Page
            2. 7.6.1.1.3.2  Register 6Fh (address = 6Fh) [reset = 0h], ANALOG Page
            3. 7.6.1.1.3.3  Register 71h (address = 71h) [reset = 0h], ANALOG Page
            4. 7.6.1.1.3.4  Register 72h (address = 72h) [reset = 0h], ANALOG Page
            5. 7.6.1.1.3.5  Register 93h (address = 93h) [reset = 0h], ANALOG Page
            6. 7.6.1.1.3.6  Register 94h (address = 94h) [reset = 0h], ANALOG Page
            7. 7.6.1.1.3.7  Register 9Bh (address = 9Bh) [reset = 0h], ANALOG Page
            8. 7.6.1.1.3.8  Register 9Dh (address = 9Dh) [reset = 0h], ANALOG Page
            9. 7.6.1.1.3.9  Register 9Eh (address = 9Eh) [reset = 0h], ANALOG Page
            10. 7.6.1.1.3.10 Register 9Fh (address = 9Fh) [reset = 0h], ANALOG Page
            11. 7.6.1.1.3.11 Register AFh (address = AFh) [reset = 0h], ANALOG Page
          4. 7.6.1.1.4 SERDES_XX Page Register Description
            1. 7.6.1.1.4.1  Register 20h (address = 20h) [reset = 0h], SERDES_XX Page
            2. 7.6.1.1.4.2  Register 21h (address = 21h) [reset = 0h], SERDES_XX Page
            3. 7.6.1.1.4.3  Register 22h (address = 22h) [reset = 0h], SERDES_XX Page
            4. 7.6.1.1.4.4  Register 23h (address = 23h) [reset = 0h], SERDES_XX Page
            5. 7.6.1.1.4.5  Register 25h (address = 25h) [reset = 0h], SERDES_XX Page
            6. 7.6.1.1.4.6  Register 26h (address = 26h) [reset = 0h], SERDES_XX Page
            7. 7.6.1.1.4.7  Register 28h (address = 28h) [reset = 0h], SERDES_XX Page
            8. 7.6.1.1.4.8  Register 2Dh (address = 2Dh) [reset = 0h], SERDES_XX Page
            9. 7.6.1.1.4.9  Register 36h (address = 36h) [reset = 0h], SERDES_XX Page
            10. 7.6.1.1.4.10 Register 37h (address = 37h) [reset = 0h], SERDES_XX Page
            11. 7.6.1.1.4.11 Register 39h (address = 39h) [reset = 0h], SERDES_XX Page
            12. 7.6.1.1.4.12 Register 3Ah (address = 3Ah) [reset = 0h], SERDES_XX Page
            13. 7.6.1.1.4.13 Register 3Bh (address = 3Bh) [reset = 0h], SERDES_XX Page
            14. 7.6.1.1.4.14 Register 3Ch (address = 3Ch) [reset = 0h], SERDES_XX Page
            15. 7.6.1.1.4.15 Register 3Dh (address = 3Dh) [reset = 0h], SERDES_XX Page
            16. 7.6.1.1.4.16 Register 3Eh (address = 3Eh) [reset = 0h], SERDES_XX Page
            17. 7.6.1.1.4.17 Register 3Fh (address = 3Fh) [reset = 0h], SERDES_XX Page
            18. 7.6.1.1.4.18 Register 40h (address = 40h) [reset = 0h], SERDES_XX Page
            19. 7.6.1.1.4.19 Register 41h (address = 41h) [reset = 0h], SERDES_XX Page
            20. 7.6.1.1.4.20 Register 42h (address = 42h) [reset = 0h], SERDES_XX Page
          5. 7.6.1.1.5 CHX Page Register Description
            1. 7.6.1.1.5.1 Register 26h (address = 26h) [reset = 0h], CHX Page
            2. 7.6.1.1.5.2 Register 27h (address = 27h) [reset = 0h], CHX Page
            3. 7.6.1.1.5.3 Register 2Dh (address = 2Dh) [reset = 0h], CHX Page
            4. 7.6.1.1.5.4 Register 78h (address = 78h) [reset = 0h], CHX Page
            5. 7.6.1.1.5.5 Register 7Ah (address = 7Ah) [reset = 0h], CHX Page
            6. 7.6.1.1.5.6 Register 7Bh (address = 7Bh) [reset = 0h], CHX Page
            7. 7.6.1.1.5.7 Register 7Eh (address = 7Eh) [reset = 3h], CHX Page
          6. 7.6.1.1.6 ADCXX Page Register Description
            1. 7.6.1.1.6.1 Register 07h (address = 07h) [reset = FFh], ADCXX Page
            2. 7.6.1.1.6.2 Register 08h (address = 08h) [reset = 0h], ADCXX Page
            3. 7.6.1.1.6.3 Register D5h (address = D5h) [reset = 0h], ADCXX Page
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Start-Up Sequence
      2. 8.1.2 Hardware Reset
      3. 8.1.3 Frequency Planning
      4. 8.1.4 SNR and Clock Jitter
      5. 8.1.5 ADC Test Pattern
        1. 8.1.5.1 ADC Section
        2. 8.1.5.2 Transport Layer Pattern
        3. 8.1.5.3 Link Layer Pattern
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  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 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.4.1 Digital Features

The ADS58J64 has two stages of digital decimation filters, as shown in Figure 7-4. The first stage is mandatory and decimates by 2, and can be configured as either a low-pass or high-pass filter. The second stage decimation supports real to complex quadrature demodulation and decimation by 2 or 4. After decimation, the complex signal can be converter back to a real signal through digital quadrate modulation at a frequency of fOUT / 4, where fOUT is the sample frequency after decimation.

Optionally, a burst mode output can be used to output the decimate-by-2 data directly.

The four channels can be configured as pairs (A, B and C, D) to either burst or decimation mode. If all four channels are in decimation mode, then the decimation setting must be the same decimation for all four channels.

All modes of operation and the maximum bandwidth provided at a sample rate of 491.52 MSPS and 368.64 MSPS are listed in Table 7-1. The first stage decimation filter prior to the 16-bit numerically controlled oscillator (NCO) is a noise suppression filter with 45% pass-band bandwidth relative to the input sample rate, less than 0.2-dB ripple, and approximately 40-dB stop-band attenuation. This filter is only used to reduce the ADC output rate from 1 GSPS to 500 MSPS prior to the second stage decimation filter or burst mode. Some analog filtering of other Nyquist zones after the first stage decimation filter is expected to be required.

The second stage filter has a pass-band bandwidth of 81.4% relative to the output sample rate, supporting a 200-MHz bandwidth with a 245.76-MSPS complex output rate.

GUID-8D3187EA-8087-4D3F-A577-307F2B44B7CA-low.gifFigure 7-4 ADS58J64 Channel (1 of 4) Block Diagram
Table 7-1 ADS58J64 Operating Modes
OPERATING
MODE		DESCRIPTION1ST STAGE DECIMATIONDIGITAL
MIXER		2ND STAGE DECIMATIONBANDWIDTH AT
491.52 MSPS		BANDWIDTH AT 368.64 MSPSOUTPUT
MIXER		OUTPUT
FORMAT		MAX OUTPUT
RATE
0Decimation2±fS / 42200 MHz150 MHz—Complex250 MSPS
1216-bit NCO2200 MHz150 MHz—Complex250 MSPS
22—2100 MHz (LP, LP or HP, HP),
75 MHz (HP, LP or LP, HP)		75 MHz,
56.25 MHz		—Real250 MSPS
3216-bit NCOBypass200 MHz150 MHzfOUT / 4Real500 MSPS
4216-bit NCO2100 MHz75 MHzfOUT / 4Real250 MSPS
5ReservedReservedReservedReservedReservedReservedReservedReserved
6216-bit NCO4100 MHz75 MHz—Complex125 MSPS
7216-bit NCO2100 MHz75 MHzfOUT / 4Real with zero insertion500 MSPS
8Burst mode———223 MHz167 MHz—Real500 MSPS