ZHCS171C June   2011  – May 2015 ADS4229

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
  4. 修订历史记录
  5. Device Comparison Table
  6. Pin Configuration and Functions
  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: ADS4229 (250 MSPS)
    6. 7.6  Electrical Characteristics: General
    7. 7.7  Digital Characteristics
    8. 7.8  LVDS and CMOS Modes Timing Requirements
    9. 7.9  LVDS Timings at Lower Sampling Frequencies
    10. 7.10 CMOS Timings at Lower Sampling Frequencies
    11. 7.11 Serial Interface Timing Characteristics
    12. 7.12 Reset Timing (Only when Serial Interface is Used)
    13. 7.13 Typical Characteristics
      1. 7.13.1 Typical Characteristics: ADS4229
      2. 7.13.2 Typical Characteristics: Contour
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Digital Functions
      2. 8.3.2 Gain for SFDR/SNR Trade-off
      3. 8.3.3 Offset Correction
      4. 8.3.4 Power-Down
        1. 8.3.4.1 Global Power-Down
        2. 8.3.4.2 Channel Standby
        3. 8.3.4.3 Input Clock Stop
      5. 8.3.5 Output Data Format
    4. 8.4 Device Functional Modes
      1. 8.4.1 Output Interface Modes
        1. 8.4.1.1 Output Interface
        2. 8.4.1.2 DDR LVDS Outputs
        3. 8.4.1.3 LVDS Buffer
        4. 8.4.1.4 Parallel CMOS Interface
        5. 8.4.1.5 CMOS Interface Power Dissipation
        6. 8.4.1.6 Multiplexed Mode of Operation
    5. 8.5 Programming
      1. 8.5.1 Device Configuration
      2. 8.5.2 Parallel Configuration Only
      3. 8.5.3 Serial Interface Configuration Only
      4. 8.5.4 Using Both Serial Interface and Parallel Controls
      5. 8.5.5 Parallel Configuration Details
      6. 8.5.6 Serial Interface Details
        1. 8.5.6.1 Register Initialization
        2. 8.5.6.2 Serial Register Readout
    6. 8.6 Register Maps
      1. 8.6.1 Serial Register Map
      2. 8.6.2 Description of Serial Registers
        1. 8.6.2.1  Register Address 00h (Default = 00h)
        2. 8.6.2.2  Register Address 01h (Default = 00h)
        3. 8.6.2.3  Register Address 03h (Default = 00h)
        4. 8.6.2.4  Register Address 25h (Default = 00h)
        5. 8.6.2.5  Register Address 29h (Default = 00h)
        6. 8.6.2.6  Register Address 2Bh (Default = 00h)
        7. 8.6.2.7  Register Address 3Dh (Default = 00h)
        8. 8.6.2.8  Register Address 3Fh (Default = 00h)
        9. 8.6.2.9  Register Address 40h (Default = 00h)
        10. 8.6.2.10 Register Address 41h (Default = 00h)
        11. 8.6.2.11 Register Address 42h (Default = 00h)
        12. 8.6.2.12 Register Address 45h (Default = 00h)
        13. 8.6.2.13 Register Address 4Ah (Default = 00h)
        14. 8.6.2.14 Register Address 58h (Default = 00h)
        15. 8.6.2.15 Register Address BFh (Default = 00h)
        16. 8.6.2.16 Register Address C1h (Default = 00h)
        17. 8.6.2.17 Register Address CFh (Default = 00h)
        18. 8.6.2.18 Register Address EFh (Default = 00h)
        19. 8.6.2.19 Register Address F1h (Default = 00h)
        20. 8.6.2.20 Register Address F2h (Default = 00h)
        21. 8.6.2.21 Register Address 2h (Default = 00h)
        22. 8.6.2.22 Register Address D5h (Default = 00h)
        23. 8.6.2.23 Register Address D7h (Default = 00h)
        24. 8.6.2.24 Register Address DBh (Default = 00h)
  9. Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Theory of Operation
      2. 9.1.2 Analog Input
        1. 9.1.2.1 Drive Circuit Requirements
        2. 9.1.2.2 Driving Circuit
      3. 9.1.3 Clock Input
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Analog Input
        2. 9.2.2.2 Common Mode Voltage Output (VCM)
        3. 9.2.2.3 Clock Driver
        4. 9.2.2.4 Digital Interface
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
    1. 10.1 Sharing DRVDD and AVDD Supplies
    2. 10.2 Using DC/DC Power Supplies
    3. 10.3 Power Supply Bypassing
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Grounding
      2. 11.1.2 Exposed Pad
      3. 11.1.3 Routing Analog Inputs
      4. 11.1.4 Routing Digital Outputs
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 器件支持
      1. 12.1.1 开发支持
        1. 12.1.1.1 技术参数定义
    2. 12.2 文档支持
      1. 12.2.1 相关文档 
    3. 12.3 社区资源
    4. 12.4 商标
    5. 12.5 静电放电警告
    6. 12.6 术语表
  13. 13机械、封装和可订购信息

1 特性

  • 最大采样率:250MSPS
  • 使用单个 1.8V 电源时的超低功耗:
    • 250MSPS 时总体功耗为 545mW
  • 高动态性能:
    • 170MHz 时为 80.8dBc 无杂散动态范围 (SFDR)
    • 170MHz 时信噪比 (SNR) 为 69.4dBFS
  • 串扰:185MHz 时大于 90dB
  • 针对
    SNR 和 SFDR 折衷的可编程增益高达 6dB
  • DC 偏移校正
  • 输出接口选项:
    • 1.8V 并行 CMOS 接口
    • 支持可编程摆幅的双数据速率 (DDR) 低压差分信令 (LVDS):
      • 标准摆幅:350mV
      • 低摆幅:200mV
  • 支持低输入时钟振幅
    低至 200mVPP
  • 封装:9mm x 9mm,64 引脚四方扁平
    无引线 (QFN) 封装

2 应用

  • 无线通信基础设施
  • 由软件定义的无线电
  • 功率放大器线性化

3 说明

ADS4229 是 ADS42xx 双通道,12 位和 14 位模数转换器 (ADC) 超低功耗系列产品。 采用创新设计技术实现高动态性能,而同时功耗极低(采用一个 1.8 V 电源)。 该拓扑使 ADS4229 非常适合多载波、宽带宽通信应用。

ADS4229 具有可被用于在较低满量程输入范围内改进无杂散动态范围 (SFDR) 性能的增益选项。 这个器件还包括一个 dc 偏移校正环路,此环路可被用于消除 ADC 偏移。 双数据速率 (DDR) 低压差分信令 (LVDS) 和并行互补金属氧化物半导体 (CMOS) 数字输出接口采用一个紧凑型 QFN-64 PowerPAD™ 封装。

此器件包含内部基准,而删除了传统基准引脚和相关的去耦合电容器。 ADS4229 可在工业温度范围(-40°C 至 +85°C)内工作。

器件信息(1)

器件型号 封装 封装尺寸(标称值)
ADS4229 VQFN (64) 9.00mm x 9.00mm
  1. 如需了解所有可用封装,请见数据表末尾的可订购产品附录。

ADS4229 框图

ADS4229 frontpage1_bas550.gif