TIDUES6 August   2020  – MONTH 

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
    1. 1.1 Key System Specifications
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 DRV8906-Q1
      2. 2.3.2 DRV8873-Q1
      3. 2.3.3 TPS1HB16-Q1
      4. 2.3.4 LM2904B-Q1
      5. 2.3.5 TLIN1028-Q1
    4. 2.4 System Design Theory
      1. 2.4.1 Mirror XY and LED Driver
      2. 2.4.2 Mirror Fold Driver
      3. 2.4.3 Mirror Heater Driver for Defogging and De-icing
      4. 2.4.4 Electrochromic Mirror Driver
        1. 2.4.4.1 Sallen-Key Low-Pass Filter
        2. 2.4.4.2 High-Current Buffer Amplifier
        3. 2.4.4.3 Buffer Amplifier Stability for Very-Large Capacitive Loads
        4. 2.4.4.4 Fast Discharge of Large Capacitive Load
      5. 2.4.5 SBC - LIN Communication Interface and System Supply
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware and Software
      1. 3.1.1 Hardware
    2. 3.2 Testing and Results
      1. 3.2.1 Test Setup
      2. 3.2.2 Test Results
        1. 3.2.2.1 Reverse Battery Protection
        2. 3.2.2.2 X&Y Motors and LED Driver
        3. 3.2.2.3 Thermal Performance
  9. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
    3. 4.3 Altium Project
    4. 4.4 Gerber Files
    5. 4.5 Assembly Drawings
  10. 5Software Files
  11. 6Related Documentation
    1. 6.1 Trademarks
    2. 6.2 Third-Party Products Disclaimer
  12. 7Terminology

2.3.4 LM2904B-Q1

The LM2904-Q1 and LM2904B-Q1 are industry-standard operational amplifiers that have been qualified for automotive use in accordance to the AEC-Q100 specifications. The LM2904B-Q1 is the next-generation version of the LM2904-Q1, which include two high-voltage (36 V) operational amplifiers (op amps). The LM2904B-Q1 provides outstanding value for cost-sensitive applications,with features including low offset (1 mV, typical), common-mode input range to ground, and high differential input voltage capability.

The LM2904B-Q1 simplifies circuit design with enhanced features such as unity-gain stability, lower offset voltage of 1 mV (typical), and lower quiescent current of 300 µA (typical). High ESD (2 kV, HBM) and integrated EMI and RF filters enable the LM2904B-Q1 devices to be used in the most rugged, environmentally challenging applications for the automotive marketplace.

GUID-A3BACB05-49E1-47FA-A499-36BEAF8F5BE2-low.pngFigure 2-5 LM2904B-Q1 Block Diagram