SLCS142G December   2003  – March 2023 LM2901-Q1 , LM2901AV-Q1 , LM2901B-Q1 , LM2901V-Q1

PRODMIX  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings for  LM2901B-Q1
    2. 6.2  Absolute Maximum Ratings for LM2901x-Q1
    3. 6.3  ESD Ratings for LM2901B-Q1
    4. 6.4  ESD Ratings for LM2901x-Q1
    5. 6.5  Recommended Operating Conditions for LM2901B-Q1
    6. 6.6  Recommended Operating Conditions for LM2901x-Q1
    7. 6.7  Thermal Information for LM2901B-Q1
    8. 6.8  Thermal Information for LM2901x-Q1
    9. 6.9  Electrical Characteristics for LM2901B-Q1
    10. 6.10 Switching Characteristics for LM2901B-Q1
    11. 6.11 Electrical Characteristics for LM2901x-Q1
    12. 6.12 Switching Characteristics for LM2901x-Q1
    13. 6.13 Typical Characteristics: LM2901B-Q1
    14. 6.14 Typical Characteristics: LM2901x-Q1
  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 Voltage Comparison
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input Voltage Range
        2. 8.2.2.2 Minimum Overdrive Voltage
        3. 8.2.2.3 Output and Drive Current
        4. 8.2.2.4 Response Time
      3. 8.2.3 Application Curves
  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 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|14
  • PW|14
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3 Feature Description

LM2901-Q1 family consists of a PNP Darlington pair input, allowing the device to operate with very high gain and fast response with minimal input bias current. The input Darlington pair creates a limit on the input common mode voltage capability, allowing LM2901-Q1 to accurately function from ground to VCC–1.5V differential input. This is enables much head room for modern day supplies of 3.3 V and 5.0 V.

The output consists of an open drain NPN (pull-down or low side) transistor. The output NPN will sink current when the negative input voltage is higher than the positive input voltage and the offset voltage. The VOL is resistive and will scale with the output current. Please see GUID-C9C3F91A-8444-4560-8772-DF53DAA77B1E.html#SLCS0056815, GUID-C9C3F91A-8444-4560-8772-DF53DAA77B1E.html#SLCS0056535 and GUID-C9C3F91A-8444-4560-8772-DF53DAA77B1E.html#SLCS0054259 for VOL values with respect to the output current.

The special pinout of this device separates input pins from the output pins to reduce parasitic coupling between input and output.