SNOSD47C december   2018  – july 2023 LDC5072-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Description (cont.)
  7. 6 Pin Configuration and Functions
  8. 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
    6. 7.6 Diagnostics
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Input Supply Voltage
      2. 8.3.2 Excitation Signal
      3. 8.3.3 Signal Processing Block
        1. 8.3.3.1 Demodulation
        2. 8.3.3.2 Fixed Gain Control
        3. 8.3.3.3 Automatic Gain Control
      4. 8.3.4 Output Stage
      5. 8.3.5 Diagnostics
        1. 8.3.5.1 Undervoltage Diagnostics
        2. 8.3.5.2 Initialization Diagnostics
        3. 8.3.5.3 Normal State Diagnostics
        4. 8.3.5.4 Fault State Diagnostics
    4. 8.4 Device Functional Modes
      1. 8.4.1 IDLE State
      2. 8.4.2 DIAGNOSTICS State
      3. 8.4.3 NORMAL State
      4. 8.4.4 FAULT State
      5. 8.4.5 DISABLED State
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 5-V Supply Mode
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 VREG and VCC
          2. 9.2.1.2.2 Output Capacitors
          3. 9.2.1.2.3 AGC Mode
        3. 9.2.1.3 Application Curve
      2. 9.2.2 3.3-V Supply Mode
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 VREG and VCC
          2. 9.2.2.2.2 Output Capacitors
          3. 9.2.2.2.3 Fixed Gain Mode
      3. 9.2.3 Redundancy Mode
      4. 9.2.4 Single-Ended Mode
      5. 9.2.5 External Diagnostics Required for Loss of VCC or GND
  11. 10Power Supply Recommendations
    1. 10.1 Mode 1: VCC = 5 V, VREG = 3.3 V
    2. 10.2 Mode 2: VCC = VREG = 3.3 V
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  14. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.3.5.1 Undervoltage Diagnostics

The LDC5072-Q1 continuously monitors the VREG and DVDD voltage while in DIAGNOSTICS, NORMAL, FAULT, and DISABLED states. If the VREG or DVDD drops below the specified limits (see Electrical Characteristics ), the LC Oscillator is turned off, the AFE is disabled, and the output pins are tri-stated if neither were done so yet. Upon voltage recovery, the device transitions to the IDLE state and initiates regular Power-On Reset.