SNOSAL8D April   2006  – September 2021 LMH6321

PRODUCTION DATA  

  1. 1Features
  2. 2Applications
  3. 3Description
  4. 4Revision History
  5. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Operating Ratings
    3. 5.3 Thermal Information
    4. 5.4 ±15 V Electrical Characteristics
    5. 5.5 ±5 V Electrical Characteristics
    6. 5.6 Typical Characteristics
  6. 6Application Hints
    1. 6.1  Buffers
    2. 6.2  Supply Bypassing
    3. 6.3  Load Impedence
    4. 6.4  Source Inductance
    5. 6.5  Overvoltage Protection
    6. 6.6  Bandwidth and Stability
    7. 6.7  Output Current and Short Circuit Protection
    8. 6.8  Thermal Management
      1. 6.8.1 Heatsinking
      2. 6.8.2 Determining Copper Area
      3. 6.8.3 Procedure
      4. 6.8.4 Example
    9. 6.9  Error Flag Operation
    10. 6.10 Single Supply Operation
    11. 6.11 Slew Rate
  7. 7Device and Documentation Support
    1. 7.1 Receiving Notification of Documentation Updates
    2. 7.2 Support Resources
    3. 7.3 Trademarks
    4. 7.4 Electrostatic Discharge Caution
    5. 7.5 Glossary
  8. 8Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • KTW|7
  • DDA|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.10 Single Supply Operation

If dual supplies are used, then the GND pin can be connected to a hard ground (0 V) (as shown in Figure 6-2). However, if only a single supply is used, this pin must be set to a voltage of one VBE (≈0.7 V) or greater, or more commonly, mid rail, by a stiff, low impedance source. This precludes applying a resistive voltage divider to the GND pin for this purpose. Figure 6-6 shows one way that this can be done.

GUID-2D498A10-04EA-4510-ADE3-7B3A66DB753D-low.gifFigure 6-6 Using an Op Amp to Bias the GND Pin to ½ V+ for Single Supply Operation

In Figure 6-6, the op amp circuit pre-biases the GND pin of the buffer for single supply operation.

The GND pin can be driven by an op amp configured as a constant voltage source, with the output voltage set by the resistor voltage divider, R1 and R2. It is recommended that These resistors be chosen so as to set the GND pin to V+/2, for maximum common mode range.