ZHCSCB7A January   2014  – April 2014 ADS7251 , ADS7851

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用范围
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Terminal Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  Handling Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics: ADS7251
    6. 6.6  Electrical Characteristics: ADS7851
    7. 6.7  Electrical Characteristics: Common
    8. 6.8  ADS7251 Timing Characteristics
    9. 6.9  ADS7851 Timing Characteristics
    10. 6.10 Typical Characteristics: ADS7251
    11. 6.11 Typical Characteristics: ADS7851
    12. 6.12 Typical Characteristics: Common
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Reference
      2. 7.3.2 Analog Input
        1. 7.3.2.1 Analog Input Full-Scale Range
        2. 7.3.2.2 Common-Mode Voltage Range
      3. 7.3.3 ADC Transfer Function
    4. 7.4 Device Functional Modes
      1. 7.4.1 Serial Interface
      2. 7.4.2 Short-Cycling Feature
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input Amplifier Selection
        2. 8.2.2.2 Antialiasing Filter
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 文档支持
      1. 11.1.1 相关文档　
    2. 11.2 相关链接
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12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

5 Terminal Configuration and Functions

RTE Package
WQFN-16
(Top View)
po_qfn_bas587.gif

Terminal Descriptions

TERMINAL I/O DESCRIPTION
NAME NO.
AINM-A 16 Analog input Negative analog input, channel A
AINP-A 15 Analog input Positive analog input, channel A
AINM-B 5 Analog input Negative analog input, channel B
AINP-B 6 Analog input Positive analog input, channel B
AVDD 14 Supply ADC supply voltage
CS 9 Digital input Chip-select signal; active low
DVDD 7 Supply Digital I/O supply
GND 8, 13 Supply Digital ground
REFGND-A 2 Supply Reference ground potential, channel A
REFGND-B 3 Supply Reference ground potential, channel B
REFOUT-A 1 Analog output Reference voltage output, REF_A
REFOUT-B 4 Analog output Reference voltage output, REF_B
SCLK 10 Digital input Serial communication clock
SDO-A 11 Digital output Data output for serial communication, channel A
SDO-B 12 Digital output Data output for serial communication, channel B
Thermal pad Supply Exposed thermal pad.
TI recommends connecting this pin to the printed circuit board (PCB) ground.