ZHCSK88A September   2010  – September 2019 ADS7947 , ADS7948 , ADS7949

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     ADS794x 方框图
  4. 4 修订历史记录
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions: ADS794x (12-, 10-, 8-Bit)
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics: ADS7947 (12-Bit)
    6. 7.6  Electrical Characteristics: ADS7948 (10-Bit)
    7. 7.7  Electrical Characteristics: ADS7949 (8-Bit)
    8. 7.8  Timing Requirements
    9. 7.9  Switching Characteristics
    10. 7.10 Typical Characteristics: ADS7947, ADS7948, ADS7949
    11. 7.11 Typical Characteristics: ADS7947 (12-Bit)
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Multiplexer and ADC Input
      2. 8.3.2 Reference
      3. 8.3.3 Clock
      4. 8.3.4 ADC Transfer Function
      5. 8.3.5 Power-Down
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device Operation
    5. 8.5 Programming
      1. 8.5.1 16-Clock Frame
      2. 8.5.2 32-Clock Frame
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Driving an ADC Without a Driving Op Amp
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 相关链接
    2. 12.2 接收文档更新通知
    3. 12.3 社区资源
    4. 12.4 商标
    5. 12.5 静电放电警告
    6. 12.6 Glossary
  13. 13机械、封装和可订购信息

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

7.11 Typical Characteristics: ADS7947 (12-Bit)

At TA = 25°C, DVDD = 1.8 V, VREF = 2.5 V, and fSAMPLE = 2 MSPS (unless otherwise noted)
ADS7947 ADS7948 ADS7949 tc_dnl-va_las708.gif
Figure 7. Differential Linearity vs
Analog Supply Voltage
ADS7947 ADS7948 ADS7949 tc_dnl-ta_las708.gif
Figure 9. Differential Linearity vs Temperature
ADS7947 ADS7948 ADS7949 tc_dnl-vref_las708.gif
Figure 11. Differential Linearity vs Reference Voltage
ADS7947 ADS7948 ADS7949 tc_oerr-va_las708.gif
Figure 13. Offset Error vs Analog Supply Voltage
ADS7947 ADS7948 ADS7949 tc_oerr-vref_las708.gif
Figure 15. Offset Error vs Reference Voltage
ADS7947 ADS7948 ADS7949 tc_gerr-ta_las708.gif
Figure 17. Gain Error vs Temperature
ADS7947 ADS7948 ADS7949 tc_snr-va_las708.gif
Figure 19. SNR vs Analog Supply Voltage
ADS7947 ADS7948 ADS7949 tc_snr-vref_las708.gif
Figure 21. SNR vs Reference Voltage
ADS7947 ADS7948 ADS7949 tc_sinad-va_las708.gif
Figure 23. SINAD vs Analog Supply Voltage
ADS7947 ADS7948 ADS7949 tc_sinad-vref_las708.gif
Figure 25. SINAD vs Reference Voltage
ADS7947 ADS7948 ADS7949 tc_sfdr-va_las708.gif
Figure 27. SFDR vs AVDD
ADS7947 ADS7948 ADS7949 tc_sfdr-vref_las708.gif
Figure 29. SFDR vs Reference Voltage
ADS7947 ADS7948 ADS7949 tc_thd-va_las708.gif
Figure 31. SFDR vs AVDD
ADS7947 ADS7948 ADS7949 tc_thd-vref_las708.gif
Figure 33. THD vs Reference Voltage
ADS7947 ADS7948 ADS7949 tc_xtalk-frq_las708.gif
Memory crosstalk is the effect of the last converted channel on the current converted channel data. Isolation crosstalk is the effect on the channel being converted that is coming from the signal on the channel that is off.
Figure 35. Crosstalk vs Input Frequency
ADS7947 ADS7948 ADS7949 tc_typ_inl_las708.gif
Figure 37. Typical INL
ADS7947 ADS7948 ADS7949 tc_inl-va_las708.gif
Figure 8. Integral Linearity vs
Analog Supply Voltage
ADS7947 ADS7948 ADS7949 tc_inl-ta_las708.gif
Figure 10. Integral Linearity vs Temperature
ADS7947 ADS7948 ADS7949 tc_inl-vref_las708.gif
Figure 12. Integral Linearity vs Reference Voltage
ADS7947 ADS7948 ADS7949 tc_oerr-ta_las708.gif
Figure 14. Offset Error vs Temperature
ADS7947 ADS7948 ADS7949 tc_gerr-va_las708.gif
Figure 16. Gain Error vs Analog Supply Voltage
ADS7947 ADS7948 ADS7949 tc_gerr-vref_las708.gif
Figure 18. Gain Error vs Reference Voltage
ADS7947 ADS7948 ADS7949 tc_snr-ta_las708.gif
Figure 20. SNR vs Temperature
ADS7947 ADS7948 ADS7949 tc_snr-frq_las708.gif
Figure 22. SNR vs Input Frequency
ADS7947 ADS7948 ADS7949 tc_sinad-ta_las708.gif
Figure 24. SINAD vs Temperature
ADS7947 ADS7948 ADS7949 tc_sinad-frq_las708.gif
Figure 26. SINAD vs Input Frequency
ADS7947 ADS7948 ADS7949 tc_sfdr-ta_las708.gif
Figure 28. SFDR vs Temperature
ADS7947 ADS7948 ADS7949 tc_sfdr-frq_las708.gif
Figure 30. SFDR vs Input Frequency
ADS7947 ADS7948 ADS7949 tc_thd-ta_las708.gif
Figure 32. SFDR vs Temperature
ADS7947 ADS7948 ADS7949 tc_thd-frq_las708.gif
Figure 34. THD vs Input Frequency
ADS7947 ADS7948 ADS7949 tc_spec_resp_las708.gif
Figure 36. Spectral Response
(8192-Point FFT)
ADS7947 ADS7948 ADS7949 tc_typ_dnl_las708.gif
Figure 38. Typical DNL
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