SLVSDM5F September   2017  – March 2020 TLV7011 , TLV7012 , TLV7021 , TLV7022

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      X2SON Package vs SC70 and US Dime
      2.      Propagation Delay vs. Overdrive
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
    2.     Pin Functions: TLV7012/22
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings (Single)
    2. 6.2  Absolute Maximum Ratings (Dual)
    3. 6.3  ESD Ratings
    4. 6.4  Recommended Operating Conditions (Single)
    5. 6.5  Recommended Operating Conditions (Dual)
    6. 6.6  Thermal Information (Single)
    7. 6.7  Thermal Information (Dual)
    8. 6.8  Electrical Characteristics (Single)
    9. 6.9  Switching Characteristics (Single)
    10. 6.10 Electrical Characteristics (Dual)
    11. 6.11 Switching Characteristics (Dual)
    12. 6.12 Timing Diagrams
    13. 6.13 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Inputs
      2. 7.4.2 Internal Hysteresis
      3. 7.4.3 Output
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Inverting Comparator With Hysteresis for TLV701x
      2. 8.1.2 Noninverting Comparator With Hysteresis for TLV701x
    2. 8.2 Typical Applications
      1. 8.2.1 Window Comparator
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 IR Receiver Analog Front End
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
      3. 8.2.3 Square-Wave Oscillator
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
        3. 8.2.3.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 Evaluation Module
    2. 11.2 Related Links
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

8.2.3.2 Detailed Design Procedure

The oscillation frequency is determined by the resistor and capacitor values. The following calculation provides details of the steps.

TLV7011 TLV7021 TLV7012 TLV7022 fbd-02-slvsdm5.pngFigure 40. Square-Wave Oscillator Timing Thresholds

First consider the output of Figure Figure 39 is high which indicates the inverted input VC is lower than the noninverting input (VA). This causes the C1 to be charged through R4, and the voltage VC increases until it is equal to the noninverting input. The value of VA at the point is calculated by Equation 7.

Equation 7. TLV7011 TLV7021 TLV7012 TLV7022 equation-slvsdm5-1.gif

if R1 = R2= R3, then VA1 = 2 VCC/ 3

At this time the comparator output trips pulling down the output to the negative rail. The value of VAat this point is calculated by Equation 8.

Equation 8. TLV7011 TLV7021 TLV7012 TLV7022 equation-SLVsdm5x-2.gif

if R1 = R2 = R3, then VA2 = VCC/3

The C1 now discharges though the R4, and the voltage VCC decreases until it reaches VA2. At this point, the output switches back to the starting state. The oscillation period equals to the time duration from for C1 from 2VCC/3 to VCC / 3 then back to 2VCC/3, which is given by R4C1 × ln 2 fro each trip. Therefore, the total time duration is calculated as 2 R4C1 × ln 2. The oscillation frequency can be obtained by Equation 9:

Equation 9. TLV7011 TLV7021 TLV7012 TLV7022 eq_9_SLVSDM5.gif