SNOSCZ7B December   2015  – April 2024 LDC0851

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 Interface Voltage Levels
    7. 5.7 Timing Requirements
    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 Basic Operation Mode
      2. 6.3.2 Threshold Adjust Mode
      3. 6.3.3 Setting the Threshold Adjust Values
      4. 6.3.4 Hysteresis
      5. 6.3.5 Conversion Time
      6. 6.3.6 Power-Up Conditions
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown Mode
      2. 6.4.2 Active Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Sensor Design
        1. 7.1.1.1 Sensor Frequency
        2. 7.1.1.2 Sensor Design Procedure
    2. 7.2 Typical Application
      1. 7.2.1 Event Counting
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
      2. 7.2.2 Coarse Position Sensing
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curves
      3. 7.2.3 Low Power Operation
        1. 7.2.3.1 Design Requirements
        2. 7.2.3.2 Detailed Design Procedure
        3. 7.2.3.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
        1. 7.4.2.1 Side by Side Coils
        2. 7.4.2.2 Stacked Coils
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

5.8 Typical Characteristics

Common test conditions (unless specified otherwise): VDD = 3.3 V, Sense coil diameter = reference coil diameter, Target: Aluminum, 1.5 mm thickness, Target area / Coil area > 100%

GUID-676D9E7A-FBD7-46A1-88B6-2893B6C8B03B-low.gif
See Basic Operation ModeADJ Code = 0
Coil diameter = 10 mm
Figure 5-1 Switching Distance vs. LREF Target Distance
GUID-A6201A01-CEB3-45D6-9F7A-43AFC7A15653-low.gif
See Basic Operation ModeADJ Code = 0
Coil diameter = 6 mm, 15 mm, 29 mm
Figure 5-3 Normalized Switching Distance vs. LREF Target Distance
GUID-10645606-AEBB-43B0-AFFB-10A02B4047DD-low.gif
LSENSE frequency (fs) variedLREF frequency (fr) fixed
Figure 5-5 Frequency vs. Distance
GUID-E8AEF889-D438-4B67-8273-87F432F6B57C-low.png
ISENSOR_MAX = 4.35 mA
Specified for closest target proximity or minimum inductance in the application.
Figure 5-7 Sensor Design Space for VDD = 1.8 V
GUID-B4292E7F-28E2-4790-990B-363D4ED8DCC4-low.gif
CTOTAL = 100 pF
Figure 5-9 ISENSOR vs. VDD
GUID-B2F4A6ED-779A-4011-B128-5D761AF0AD82-low.gifFigure 5-11 ISTATIC vs. VDD
GUID-B48DACB9-CEA2-429A-8CBD-A0F20044A2CF-low.gifFigure 5-13 ISENSOR vs. ƒSENSOR
GUID-93EA9E7E-A40D-4920-87FC-A5864ECD8022-low.gif
See Threshold Adjust ModeNo reference target
Coil diameter = 10 mm
Figure 5-2 Switching Distance vs. ADJ code
GUID-5C498C7C-81C1-4555-8A32-2CB5A9036610-low.gif
See Threshold Adjust ModeNo reference target
Coil diameter = 6 mm, 15 mm, 29 mm
Figure 5-4 Normalized Switching Distance vs. ADJ Code
GUID-A76FC9C5-F3AA-404A-B360-2B4DB09EC113-low.gif
LSENSE inductance (Ls) variedLREF inductance (Lr) fixed
Figure 5-6 Inductance vs. Distance
GUID-2E22D719-A8B5-432D-85EC-48D7FDCDD2BB-low.png
ISENSOR_MAX = 6 mA
Specified for closest target proximity or minimum inductance in the application.
Figure 5-8 Sensor Design Space for VDD = 3.3 V
GUID-1CCA717D-5A99-47D5-8BD0-3259FA8FE5BC-low.gif
CBOARD = 12 pF
ƒSENSOR = 30 MHz
Figure 5-10 IDYN vs. VDD
GUID-E6641801-9CE3-4FF1-8B17-6C1B4A9498D1-low.gifFigure 5-12 ISD vs. VDD
GUID-B0FD2C04-2772-4D87-A06D-4673D074D7EC-low.gif
Normalized to frequency at VDD = 3.6 V
Figure 5-14 ƒSENSOR Shift vs. VDD