SBOSAJ4 June   2024 TLV9304-Q1

PRODMIX  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Pin Configuration and Functions
  6. Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information for Quad Channel
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Input Protection Circuitry
      2. 6.3.2 EMI Rejection
      3. 6.3.3 Phase Reversal Protection
      4. 6.3.4 Thermal Protection
      5. 6.3.5 Capacitive Load and Stability
      6. 6.3.6 Common-Mode Voltage Range
      7. 6.3.7 Electrical Overstress
      8. 6.3.8 Overload Recovery
      9. 6.3.9 Typical Specifications and Distributions
    4. 6.4 Device Functional Modes
  8. Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 High Voltage Precision Comparator
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 TINA-TI (Free Software Download)
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

Capacitive Load and Stability

The TLV930x-Q1 features a resistive output stage capable of driving smaller capacitive loads, and by leveraging an isolation resistor, the device can easily be configured to drive large capacitive loads. Increasing the gain enhances the ability of the amplifier to drive greater capacitive loads; see Figure 6-6 and Figure 6-7. The particular op amp circuit configuration, layout, gain, and output loading are some of the factors to consider when establishing whether an amplifier is stable in operation.

TLV9304-Q1 Small-Signal Overshoot vs Capacitive Load (100mV Output Step, G = 1)Figure 6-6 Small-Signal Overshoot vs Capacitive Load (100mV Output Step, G = 1)
TLV9304-Q1 Small-Signal Overshoot vs Capacitive Load (100mV Output Step, G = –1)Figure 6-7 Small-Signal Overshoot vs Capacitive Load (100mV Output Step, G = –1)

For additional drive capability in unity-gain configurations, improve capacitive load drive by inserting a small (10Ω to 20Ω) resistor, RISO, in series with the output, as shown in Figure 6-8. This resistor significantly reduces ringing and maintains DC performance for purely capacitive loads. However, if a resistive load is in parallel with the capacitive load, then a voltage divider is created, thus introducing a gain error at the output and slightly reducing the output swing. The error introduced is proportional to the ratio RISO / RL, and is generally negligible at low output levels. The high capacitive load drive of the TLV930x-Q1 is designed for applications such as reference buffers, MOSFET gate drives, and cable-shield drives. The circuit shown in Figure 6-8 uses an isolation resistor, RISO, to stabilize the output of an op amp. RISO modifies the open-loop gain of the system for increased phase margin. For additional information on techniques to optimize and design using this circuit, TI Precision Design TIDU032 details complete design goals, simulation, and test results.

TLV9304-Q1 Extending Capacitive Load Drive With the TLV9301-Q1Figure 6-8 Extending Capacitive Load Drive With the TLV9301-Q1