ZHCSCA6B April   2014  – October 2020 ADS4245-EP

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics:
    6. 6.6  Electrical Characteristics: General
    7. 6.7  Digital Characteristics
    8. 6.8  Timing Characteristics: LVDS And CMOS Modes
    9. 6.9  Typical Characteristics:
    10. 6.10 Typical Characteristics: General
    11. 6.11 Typical Characteristics: Contour
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Digital Functions
      2. 7.4.2 Gain For SFDR/SNR Trade-Off
      3. 7.4.3 Offset Correction
      4. 7.4.4 Power-Down
        1. 7.4.4.1 Global Power-Down
        2. 7.4.4.2 Channel Standby
        3. 7.4.4.3 Input Clock Stop
      5. 7.4.5 Digital Output Information
        1. 7.4.5.1 Output Interface
        2. 7.4.5.2 DDR LVDS Outputs
        3. 7.4.5.3 LVDS Buffer
        4. 7.4.5.4 Parallel CMOS Interface
        5. 7.4.5.5 CMOS Interface Power Dissipation
        6. 7.4.5.6 Multiplexed Mode Of Operation
        7. 7.4.5.7 Output Data Format
      6. 7.4.6 Device Configuration
        1. 7.4.6.1 Parallel Configuration Only
        2. 7.4.6.2 Serial Interface Configuration Only
        3. 7.4.6.3 Using Both Serial Interface And Parallel Controls
        4. 7.4.6.4 Parallel Configuration Details
        5. 7.4.6.5 Serial Interface Details
          1. 7.4.6.5.1 Register Initialization
          2. 7.4.6.5.2 Serial Register Readout
    5. 7.5 Serial Register Map
    6. 7.6 Description Of Serial Registers
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Clock Input
    2. 8.2 Typical Applications
      1. 8.2.1 Analog Input
        1. 8.2.1.1 Design Requirements for Drive Circuits
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Grounding
      2. 10.1.2 Supply Decoupling
      3. 10.1.3 Exposed Pad
      4. 10.1.4 Routing Analog Inputs
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Device Support
        1. 11.1.1.1 Definition Of Specifications
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary

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7.4.6.4 Parallel Configuration Details

The functions controlled by each parallel terminal are described in Table 7-6, Table 7-7, and Table 7-8. A simple way of configuring the parallel terminals is shown in Figure 7-8.

Table 7-6 SCLK Control Terminal
VOLTAGE APPLIED ON SCLKDESCRIPTION
LowLow-speed mode is disabled
HighLow-speed mode is enabled(1)
(1) Low-speed mode is enabled in the ADS4222/42 by default.
Table 7-7 SEN Control Terminal
VOLTAGE APPLIED ON SENDESCRIPTION
0
(+50mV/0mV)		Twos complement and parallel CMOS output
(3/8) AVDD
(±50mV)		Offset binary and parallel CMOS output
(5/8) 2AVDD
(±50mV)		Offset binary and DDR LVDS output
AVDD
(0mV/–50mV)		Twos complement and DDR LVDS output
Table 7-8 CTRL1, CTRL2, And CTRL3 Terminals
CTRL1CTRL2CTRL3DESCRIPTION
LowLowLowNormal operation
LowLowHighNot available
LowHighLowNot available
LowHighHighNot available
HighLowLowGlobal power-down
HighLowHighChannel A standby, channel B is active
HighHighLowNot available
HighHighHighMUX mode of operation, channel A and B data are multiplexed and output on the DB[13:0] terminals.
GUID-09500743-B6EB-4237-84BB-2269FEE055BE-low.gifFigure 7-8 Simple Scheme To Configure The Parallel Terminals
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