SBOSAK6 June   2025 THS4535

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics for External Gain
    6. 6.6 Electrical Characteristics for Internal Gain
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Output Common-Mode
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power-Down Mode
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Output Common-Mode Voltage
        1. 8.1.1.1 Resistor Matching
      2. 8.1.2 Data Converters
      3. 8.1.3 Single-Supply Applications
    2. 8.2 Typical Application
      1. 8.2.1 Typical Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Board Layout Recommendations
      2. 8.4.2 Layout Examples
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.4.1 Power-Down Mode

Assert the power-down (PD) pin to the desired voltage for proper power-down mode operation. A physical internal pullup resistor is not provided on the PD pin so that if the pin is floated, the device defaults to the ON state. Tie the PD pin to the positive supply voltage for applications that simply require the device to power on when the supplies are present. For single-supply operation, a minimum of 0.5V within the positive supply is required.

The disable operation is referenced from the positive supply. For an OFF state condition, the disable control pin must be 0.5V within the negative supply. Figure 7-2 shows how to use a microcontroller to toggle the power-down pin on the THS4535 by simply connecting a digital input/output (DIO) directly to the PD pin.

Note: If using a microcontroller to enable the THS4535, ensure that the threshold voltages (VIH and VIL) in the Electrical Characteristics are satisfied.

THS4535 PD Pin Schematic Figure 7-2 PD Pin Schematic