SBOS784C November   2016  – January 2019 TLV172 , TLV2172 , TLV4172

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Simplified Schematic
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions: TLV172
    2.     Pin Functions: TLV2172
    3.     Pin Functions: TLV4172
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information: TLV172
    5. 7.5 Thermal Information: TLV2172
    6. 7.6 Thermal Information: TLV4172
    7. 7.7 Electrical Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Operating Characteristics
      2. 8.3.2 Phase-Reversal Protection
      3. 8.3.3 Electrical Overstress
      4. 8.3.4 Capacitive Load and Stability
    4. 8.4 Device Functional Modes
      1. 8.4.1 Common-Mode Voltage Range
      2. 8.4.2 Overload Recovery
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
      2. 12.1.2 Development Support
        1. 12.1.2.1 TINA-TI™ (Free Software Download)
        2. 12.1.2.2 DIP Adapter EVM
        3. 12.1.2.3 Universal Op Amp EVM
        4. 12.1.2.4 TI Precision Designs
        5. 12.1.2.5 WEBENCH Filter Designer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Related Links
    4. 12.4 Receiving Notification of Documentation Updates
    5. 12.5 Community Resources
    6. 12.6 Trademarks
    7. 12.7 Electrostatic Discharge Caution
    8. 12.8 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

8.3.4 Capacitive Load and Stability

The dynamic characteristics of the TLVx172 are optimized for common operating conditions. The combination of low closed-loop gain and high capacitive loads decreases the phase margin of the amplifier and can lead to gain peaking or oscillations. As a result, heavier capacitive loads must be isolated from the output. The simplest way to achieve this isolation is to add a small resistor (for example, ROUT equal to 50 Ω) in series with the output. Figure 27 and Figure 28 show graphs of small-signal overshoot versus capacitive load for several values of ROUT. See the Feedback Plots Define Op Amp AC Performance application note for details of analysis techniques and application circuits.

TLV172 TLV2172 TLV4172 C022_correct_graph_SBOS618.gif
100-mV output step, G = –1
Figure 27. Small-Signal Overshoot vs Capacitive Load
TLV172 TLV2172 TLV4172 D023_SBOS784_correct_graph.gif
100-mV output step, G = 1
Figure 28. Small-Signal Overshoot vs Capacitive Load