SBAS587A January   2014  – April 2014 ADS7251 , ADS7851

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  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. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    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

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.