SLYU067 December   2023 DRV5011 , DRV5012 , DRV5013 , DRV5013-Q1 , DRV5015 , DRV5015-Q1 , DRV5021 , DRV5021-Q1 , DRV5023 , DRV5023-Q1 , DRV5032 , DRV5033 , DRV5033-Q1 , DRV5053 , DRV5053-Q1 , DRV5055 , DRV5055-Q1 , DRV5056 , DRV5056-Q1 , DRV5057 , DRV5057-Q1 , TMAG3001 , TMAG5110 , TMAG5110-Q1 , TMAG5111 , TMAG5111-Q1 , TMAG5115 , TMAG5123 , TMAG5123-Q1 , TMAG5124 , TMAG5124-Q1 , TMAG5131-Q1 , TMAG5170 , TMAG5170-Q1 , TMAG5170D-Q1 , TMAG5173-Q1 , TMAG5231 , TMAG5253 , TMAG5273 , TMAG6180-Q1 , TMAG6181-Q1 , TMCS1107 , TMCS1108

 

  1.   1
  2.   Trademarks
  3.   Abstract
  4. 1Introduction and Features Overview
    1. 1.1 Simulating Magnetic Fields Tool Introduction
  5. 2Simulation Interface
    1. 2.1 Getting Started
    2. 2.2 Creating a New Design
    3. 2.3 Selecting a Sensor
    4. 2.4 Sensor Output Types
  6. 3Simulation Environment
  7. 4Simulation Inputs
    1. 4.1 Magnet Input Fields
      1. 4.1.1 Magnet Specifications
      2. 4.1.2 Magnet Geometry
      3. 4.1.3 Magnet Motion
      4. 4.1.4 Magnet Rotation
      5. 4.1.5 Hinge Magnet Motion
      6. 4.1.6 Linear Magnet Motion
      7. 4.1.7 Joystick Magnet Motion
    2. 4.2 Sensor Input Fields
      1. 4.2.1 Linear Sensor Format
      2. 4.2.2 Latch and Switch Format
      3. 4.2.3 Sensor Position
    3. 4.3 Simulation Settings
  8. 5Simulation Results
  9. 6Parametric Sweeps
  10. 7Comparing Designs
  11. 8Summary
  12. 9References
  13.   A Appendix
    1.     A.1 Sensor Placement
    2.     A.2 Magnet Materials
    3.     A.3 Rotation Tips

2.4 Sensor Output Types

This section explains the common output modes available when using TIMSS.

  • Voltage Output Switch: A switch device has two states that toggle when BOP and BRP thresholds are met. These two states are typically observed as a voltage on the output pin. Voltages in TIMSS switch between VOH and VOL for push-pull outputs or between VCC and VOL for open-drain devices.
  • Current Output Switch: For switches with current mode output, there is no output pin to monitor voltage. Instead, the supply current, Icc, increases or decreases depending on the output state.
  • Latch: Latches operate similarly to switches with a voltage output but a key difference is that BOP and BRP are typically opposite values. For instance, if BOP on a latch occurs at 2 mT, then the BRP is set to -2 mT.
  • Voltage Output Linear: Analog output linear devices vary the output voltage linearly with a changing input magnetic field. These devices typically have some sensitivity range specified to define the range of acceptable inputs. A wider input range corresponds to a higher sensitivity gain of the sensor. Outputs are typically set to a quiescent value, VQ, with no magnetic input provided.
  • Digital Output Linear: Many 3-axis sensors implement a digital output format to provide selectable access to specific magnetic field components. These devices often have built-in averaging functions to enable oversampling for reduced noise. The result of over-sampling is an increase in the effective number of bits (ENOB) of the sensor. Changes commonly occur in the output code range when averaging is enabled. For example, TMAG5170-Q1 changes from a 12-bit result to a 16-bit result whenever averaging is enabled.