SBOS729B October   2015  – October 2025 DRV425

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 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 Fluxgate Sensor Front-End
        1. 6.3.1.1 Fluxgate Sensor
        2. 6.3.1.2 Bandwidth
        3. 6.3.1.3 Differential Driver for the Internal Compensation Coil
        4. 6.3.1.4 Magnetic Field Range, Overrange Indicator, and Error Flag
      2. 6.3.2 Shunt-Sense Amplifier
      3. 6.3.3 Voltage Reference
      4. 6.3.4 Low-Power Operation
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Linear Position Sensing
        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 Current Sensing in Busbars
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
      1. 7.3.1 Power Supply Decoupling
      2. 7.3.2 Power-On Start-Up and Brownout
      3. 7.3.3 Power Dissipation
        1. 7.3.3.1 Thermal Pad
    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 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Receiving Notification of Documentation Updates
    5. 8.5 Support Resources
    6. 8.6 Trademarks
    7. 8.7 Electrostatic Discharge Caution
    8. 8.8 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

4 Pin Configuration and Functions

Figure 4-1 RTJ Package20-Pin WQFNTop View
Table 4-1 Pin Functions
PIN Type(1) DESCRIPTION
NAME NO.
AINN 14 I Inverting input of the shunt-sense amplifier
AINP 13 I Noninverting input of the shunt-sense amplifier
BSEL 1 I Filter bandwidth select input
COMP1 16 I Internal compensation coil input 1
COMP2 17 I Internal compensation coil input 2
DRV1 12 O Compensation coil driver output 1
DRV2 11 O Compensation coil driver output 2
ERROR 19 O Error flag: open-drain, active-low output
GND 7, 10, 18, 20 — Ground reference
OR 15 O Shunt-sense amplifier overrange indicator: open-drain, active-low output
REFIN 5 I Common-mode reference input for the shunt-sense amplifier
REFOUT 4 O Voltage reference output
RSEL0 3 I Voltage reference mode selection input 0
RSEL1 2 I Voltage reference mode selection input 1
VDD 8, 9 — Supply voltage, 3.0V to 5.5V. Decouple both pins using 1µF ceramic capacitors placed as close as possible to the device. See the Power Supply Decoupling and Layout sections for further details.
VOUT 6 O Shunt-sense amplifier output
Thermal Pad Thermal Pad — Connect the thermal pad to GND
(1) I = Input; O = Output