ZHCSEA4C May   2015  – December 2020 ADS54J40

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5  ADS54J40 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 AC Characteristics
    7. 7.7 Digital Characteristics
    8. 7.8 Timing Requirements
    9. 7.9 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 Analog Inputs
      2. 8.3.2 DDC Block
        1. 8.3.2.1 Decimate-by-2 Filter
        2. 8.3.2.2 Decimate-by-4 Filter Using a Digital Mixer
        3. 8.3.2.3 Decimate-by-4 Filter with IQ Outputs
      3. 8.3.3 SYSREF Signal
        1. 8.3.3.1 SYSREF Not Present (Subclass 0, 2)
      4. 8.3.4 Overrange Indication
        1. 8.3.4.1 Fast OVR
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power-Down Mode
      2. 8.4.2 Device Configuration
        1. 8.4.2.1 Serial Interface
        2. 8.4.2.2 Serial Register Write: Analog Bank
        3. 8.4.2.3 Serial Register Readout: Analog Bank
        4. 8.4.2.4 JESD Bank SPI Page Selection
        5. 8.4.2.5 Serial Register Write: JESD Bank
          1. 8.4.2.5.1 Individual Channel Programming
        6. 8.4.2.6 Serial Register Readout: JESD Bank
      3. 8.4.3 JESD204B Interface
        1. 8.4.3.1 JESD204B Initial Lane Alignment (ILA)
        2. 8.4.3.2 JESD204B Test Patterns
        3. 8.4.3.3 JESD204B Frame
        4. 8.4.3.4 JESD204B Frame Assembly with Decimation
          1. 8.4.3.4.1 JESD Transmitter Interface
          2. 8.4.3.4.2 Eye Diagrams
    5. 8.5 Register Maps
      1. 8.5.1 Example Register Writes
      2. 8.5.2 Register Descriptions
        1. 8.5.2.1 General Registers
          1. 8.5.2.1.1 Register 0h (address = 0h)
          2. 8.5.2.1.2 Register 1h (address = 1h)
          3. 8.5.2.1.3 Register 2h (address = 2h)
          4. 8.5.2.1.4 Register 3h (address = 3h)
          5. 8.5.2.1.5 Register 4h (address = 4h)
          6. 8.5.2.1.6 Register 5h (address = 5h)
          7. 8.5.2.1.7 Register 11h (address = 11h)
        2. 8.5.2.2 Master Page (080h) Registers
          1. 8.5.2.2.1  Register 20h (address = 20h), Master Page (080h)
          2. 8.5.2.2.2  Register 21h (address = 21h), Master Page (080h)
          3. 8.5.2.2.3  Register 23h (address = 23h), Master Page (080h)
          4. 8.5.2.2.4  Register 24h (address = 24h), Master Page (080h)
          5. 8.5.2.2.5  Register 26h (address = 26h), Master Page (080h)
          6. 8.5.2.2.6  Register 4Fh (address = 4Fh), Master Page (080h)
          7. 8.5.2.2.7  Register 53h (address = 53h), Master Page (080h)
          8. 8.5.2.2.8  Register 54h (address = 54h), Master Page (080h)
          9. 8.5.2.2.9  Register 55h (address = 55h), Master Page (080h)
          10. 8.5.2.2.10 Register 59h (address = 59h), Master Page (080h)
        3. 8.5.2.3 ADC Page (0Fh) Register
          1. 8.5.2.3.1 Register 5F (addresses = 5F), ADC Page (0Fh)
        4. 8.5.2.4 Main Digital Page (6800h) Registers
          1. 8.5.2.4.1  Register 0h (address = 0h), Main Digital Page (6800h)
          2. 8.5.2.4.2  Register 40h (address = 40h), Main Digital Page (6800h)
          3. 8.5.2.4.3  Register 41h (address = 41h), Main Digital Page (6800h)
          4. 8.5.2.4.4  Register 42h (address = 42h), Main Digital Page (6800h)
          5. 8.5.2.4.5  Register 43h (address = 43h), Main Digital Page (6800h)
          6. 8.5.2.4.6  Register 44h (address = 44h), Main Digital Page (6800h)
          7. 8.5.2.4.7  Register 4Bh (address = 4Bh), Main Digital Page (6800h)
          8. 8.5.2.4.8  Register 4Dh (address = 4Dh), Main Digital Page (6800h)
          9. 8.5.2.4.9  Register 4Eh (address = 4Eh), Main Digital Page (6800h)
          10. 8.5.2.4.10 Register 52h (address = 52h), Main Digital Page (6800h)
          11. 8.5.2.4.11 Register 68h (address = 68h), Main Digital Page (6800h)
          12. 8.5.2.4.12 Register 72h (address = 72h), Main Digital Page (6800h)
          13. 8.5.2.4.13 Register ABh (address = ABh), Main Digital Page (6800h)
          14. 8.5.2.4.14 Register ADh (address = ADh), Main Digital Page (6800h)
          15. 8.5.2.4.15 Register F7h (address = F7h), Main Digital Page (6800h)
        5. 8.5.2.5 JESD Digital Page (6900h) Registers
          1. 8.5.2.5.1  Register 0h (address = 0h), JESD Digital Page (6900h)
          2. 8.5.2.5.2  Register 1h (address = 1h), JESD Digital Page (6900h)
          3. 8.5.2.5.3  Register 2h (address = 2h), JESD Digital Page (6900h)
          4. 8.5.2.5.4  Register 3h (address = 3h), JESD Digital Page (6900h)
          5. 8.5.2.5.5  Register 5h (address = 5h), JESD Digital Page (6900h)
          6. 8.5.2.5.6  Register 6h (address = 6h), JESD Digital Page (6900h)
          7. 8.5.2.5.7  Register 7h (address = 7h), JESD Digital Page (6900h)
          8. 8.5.2.5.8  Register 16h (address = 16h), JESD Digital Page (6900h)
          9. 8.5.2.5.9  Register 31h (address = 31h), JESD Digital Page (6900h)
          10. 8.5.2.5.10 Register 32h (address = 32h), JESD Digital Page (6900h)
        6. 8.5.2.6 JESD Analog Page (6A00h) Registers
          1. 8.5.2.6.1 Register 12h (address = 12h), JESD Analog Page (6A00h)
          2. 8.5.2.6.2 Registers 13h-15h (addresses = 13h-5h), JESD Analog Page (6A00h)
          3. 8.5.2.6.3 Register 16h (address = 16h), JESD Analog Page (6A00h)
          4. 8.5.2.6.4 Register 17h (address = 17h), JESD Analog Page (6A00h)
          5. 8.5.2.6.5 Register 1Ah (address = 1Ah), JESD Analog Page (6A00h)
          6. 8.5.2.6.6 Register 1Bh (address = 1Bh), JESD Analog Page (6A00h)
        7. 8.5.2.7 Offset Read Page (JESD BANK PAGE SEL = 6100h, JESD BANK PAGE SEL1 = 0000h) Registers
          1. 8.5.2.7.1 Register 068h (address = 068h), Offset Read Page
          2. 8.5.2.7.2 Register 069h (address = 069h), Offset Read Page
          3. 8.5.2.7.3 Registers 074h, 076h, 078h, 7Ah (address = 074h, 076h, 078h, 7Ah), Offset Read Page
          4. 8.5.2.7.4 Registers 075h, 077h, 079h, 7Bh (address = 075h, 077h, 079h, 7Bh), Offset Read Page
        8. 8.5.2.8 Offset Load Page (JESD BANK PAGE SEL= 6100h, JESD BANK PAGE SEL1 = 0500h) Registers
          1. 8.5.2.8.1 Registers 00h, 04h, 08h, 0Ch (address = 00h, 04h, 08h, 0Ch), Offset Load Page
          2. 8.5.2.8.2 Registers 01h, 05h, 09h, 0Dh (address = 01h, 05h, 09h, 0Dh), Offset Load Page
          3. 8.5.2.8.3 Registers 78h (address = 78h), Offset Load Page
  9. 9 Application Information Disclaimer
    1. 9.1 Application Information
      1. 9.1.1 Start-Up Sequence
      2. 9.1.2 Hardware Reset
      3. 9.1.3 SNR and Clock Jitter
      4. 9.1.4 DC Offset Correction Block in the ADS54J40
        1. 9.1.4.1 Freezing the DC Offset Correction Block
        2. 9.1.4.2 Effect of Temperature
      5. 9.1.5 Idle Channel Histogram
      6. 9.1.6 Interleaving (IL) Mismatch Compensation
        1. 9.1.6.1 Introduction
        2. 9.1.6.2 Features
        3. 9.1.6.3 Temperature variation
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Transformer-Coupled Circuits
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power Sequencing and Initialization
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 静电放电警告
    6. 12.6 术语表

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

8.4.3.4 JESD204B Frame Assembly with Decimation

Table 8-12 lists the available JESD204B formats and valid ranges for the ADS54J40 when enabling the decimation filter. The ranges are limited by the SERDES line rate and the maximum ADC sample frequency.

Table 8-13 lists the detailed frame assembly with different decimation options.

Table 8-12 Interface Rates with Decimation Filter
L M F S DECIMATION MINIMUM RATES MAXIMUM RATES
DEVICE CLOCK FREQUENCY (MSPS) OUTPUT SAMPLE RATE (MSPS) SERDES BIT RATE (Gbps) DEVICE CLOCK FREQUENCY (MSPS) OUTPUT SAMPLE RATE (MSPS) SERDES BIT RATE (Gbps)
4 4 2 1 4X (IQ) 500 125 2.5 1000 250 5.0
4 2 2 2 2X 500 250 2.5 1000 500 5.0
2 2 4 2 2X 300 150 3 1000 500 10.0
2 2 2 1 4X 500 125 2.5 1000 250 5.0
2 4 4 1 4X (IQ) 300 75 3 1000 250 10.0
1 2 4 1 4X 300 75 3 1000 250 10.0
Table 8-13 Frame Assembly with Decimation Filter
PIN LMFS = 4222, 2X DECIMATION LMFS = 2242, 2X DECIMATION LMFS = 2221, 4X DECIMATION LMFS = 2441, 4X DECIMATION (IQ) LMFS = 4421, 4X DECIMATION (IQ) LMFS = 1241, 4X DECIMATION
DA0 A1
[15:8]		 A1
[7:0]		 AQ0
[15:8]		 AQ0
[7:0]
DA1 A0
[15:8]		 A0
[7:0]		 A0
[15:8]		 A0
[7:0]		 A1
[15:8]		 A1
[7:0]		 A0
[15:8]		 A0
[7:0]		 AI0
[15:8]		 AI0
[7:0]		 AQ0
[15:8]		 AQ0
[7:0]		 AI0
[15:8]		 AI0
[7:0]		 A0
[15:8]		 A0
[7:0]		 B0
[15:8]		 B0
[7:0]
DA2
DA3
DB0 B1
[15:8]		 B1
[7:0]		 BQ0
[15:8]		 BQ0
[7:0]
DB1 B0
[15:8]		 B0
[7:0]		 B0
[15:8]		 B0
[7:0]		 B1
[15:8]		 B1
[7:0]		 B0
[15:8]		 B0
[7:0]		 BI0
[15:8]		 BI0
[7:0]		 BQ0
[15:8]		 BQ0
[7:0]		 BI0
[15:8]		 BI0
[7:0]
DB2
DB3
Table 8-14 Program Summary of DDC Modes and JESD Link Configuration
LMFS OPTIONS DDC MODES PROGRAMMING JESD LINK (LMFS) PROGRAMMING
L M F S DECIMATION OPTIONS DEC MODE EN, DECFIL EN(1) DECFIL MODE[3:0](2) JESD FILTER(3) JESD MODE(4) JESD PLL MODE(5) LANE SHARE(6) DA_BUS_
REORDER(7)		 DB_BUS_
REORDER(8)		 BUS_REORDER EN1(9) BUS_REORDER EN2(10)
4 2 1 1 No decimation 00 00 000 100 10 0 00h 00h 0 0
4 2 4 4 No decimation 00 00 000 010 10 0 00h 00h 0 0
8 2 2 4 No decimation (default after reset) 00 00 000 001 00 0 00h 00h 0 0
4 4 2 1 4X (IQ) 11 0011 (LPF with fS / 4 mixer) 111 001 00 0 0Ah 0Ah 1 1
4 2 2 2 2X 11 0010 (LPF) or 0110 (HPF) 110 001 00 0 0Ah 0Ah 1 1
2 2 4 2 2X 11 0010 (LPF) or 0110 (HPF) 110 010 10 0 0Ah 0Ah 1 1
2 2 2 1 4X 11 0000, 0100, 1000, or 1100 (all BPFs with different center frequencies). 100 001 00 0 0Ah 0Ah 1 1
2 4 4 1 4X (IQ) 11 0011 (LPF with an fS / 4 mixer) 111 010 10 0 0Ah 0Ah 1 1
1 2 4 1 4X 11 0000, 0100, 1000, or 1100 (all BPFs with different center frequencies) 100 010 10 1 0Ah 0Ah 1 1
(1) The DEC MODE EN and DECFIL EN register bits are located in the main digital page, register 04Dh (bit 3) and register 041h (bit 4).
(2) The DECFIL MODE[3:0] register bits are located in the main digital page, register 041h (bits 5 and 2-0).
(3) The JESD FILTER register bits are located in the JESD digital page, register 001h (bits 5-3).
(4) The JESD MODE register bits are located in the JESD digital page, register 001h (bits 2:0).
(5) The JESD PLL MODE register bits are located in the JESD analog page, register 016h (bits 1-0).
(6) The LANE SHARE register bit is located in the JESD digital page, register 016h (bit 4).
(7) The DA_BUS_REORDER register bits are located in the JESD digital page, register 031h (bits 7-0).
(8) The DB_BUS_REORDER register bits are located in the JESD digital page, register 032h (bits 7-0).
(9) The BUS_REORDER EN1 register bit is located in the main digital page, register 052h (bit 7).
(10) The BUS_REORDER EN2 register bit is located in the main digital page, register 072h (bit 3).