SNOSDI7 December   2023 LDC5071-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Diagnostics
    7. 5.7 Switching Characteristics
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Input Supply Voltage
      2. 6.3.2 Excitation Signal
      3. 6.3.3 Signal Processing Block
        1. 6.3.3.1 Demodulation
        2. 6.3.3.2 Fixed Gain Control
        3. 6.3.3.3 Automatic Gain Control
      4. 6.3.4 Output Stage
      5. 6.3.5 Diagnostics
        1. 6.3.5.1 Undervoltage Diagnostics
        2. 6.3.5.2 Initialization Diagnostics
        3. 6.3.5.3 Normal State Diagnostics
        4. 6.3.5.4 Fault State Diagnostics
    4. 6.4 Device Functional Modes
      1. 6.4.1 IDLE State
      2. 6.4.2 DIAGNOSTICS State
      3. 6.4.3 NORMAL State
      4. 6.4.4 FAULT State
      5. 6.4.5 DISABLED State
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 5-V Supply Mode
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 VREG and VCC
          2. 7.2.1.2.2 Output Capacitors
          3. 7.2.1.2.3 Automatic Gain Control (AGC) Mode
        3. 7.2.1.3 Application Curve
      2. 7.2.2 3.3-V Supply Mode
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
          1. 7.2.2.2.1 VREG and VCC
          2. 7.2.2.2.2 Output Capacitors
          3. 7.2.2.2.3 Fixed Gain Mode
      3. 7.2.3 Redundancy Mode
      4. 7.2.4 Single-Ended Mode
      5. 7.2.5 External Diagnostics Required for Loss of VCC or GND
    3. 7.3 Power Supply Recommendations
      1. 7.3.1 Mode 1: VCC = 5 V, VREG = 3.3 V
      2. 7.3.2 Mode 2: VCC = VREG = 3.3 V
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

5.6 Diagnostics

over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
IPD_INxN_BIST   Pull down current to GND during start-up on INxN pins for sensor BIST 150 200 270 μA
IPU_INxP_BIST Pull up current from VREG during start-up on INxP pins for sensor BIST 150 200 270
VTH_FALL_INxP_BIST  Falling threshold of window comparator for sensor BIST on INxP pins 22.7 25 30 %VREG
VTH_FALL_INxN_BIST Falling threshold of window comparator for sensor BIST on INxN pins 70 75 77.3
IPU_AGC_EN_BIST   Pull up current from VREG during start-up BIST on AGC_EN pin to check short to ground 200 250 350 μA
CLOSS_VREG  VREG external capacitor loss check. Capacitor values below this will trigger a fault. 5V VCC mode only 1 nF
VOVUTH_VREG(1) VREG overvoltage upper threshold 4.2 V
VOVLTH_VREG VREG overvoltage lower threshold 3.6
VPOR_VREG_uth   VREG power-on upper threshold 3.15 V
VPOR_VREG_lth VREG power-on lower threshold 2.91
IPU_LCx_BIST   Pull up current from VREG during start-up on LCOUT and LCIN pins for sensor BIST 1.7 2.6 4.0 mA
IPD_LCx_BIST Pull down current to GND during start-up on LCOUT and LCIN pins for sensor BIST 1.7 2.6 4.0
VALAGC_INP_OOR_L   AGC quantized step out of 256 (min to max gain) in auto gain mode to signal FAULT when input signal is very low amplitude 251 AGC code
VALAGC_INP_OOR_H AGC quantized step out of 256 (min to max gain) in auto gain mode to signal FAULT when input signal is very high amplitude 4
VUV_DVDD   Internal Digital Supply undervoltage check. 1.2 1.3 V
VTOGGLE_AGC_EN   Checks if the comparator on AGC_EN toggles after AGC_EN status determination 50 200 mV
(1) Device will continue normal operation until the over-voltage threshold on VREG triggered