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  • OPA455 High-Voltage (150-V), Wide-Bandwidth (6.5-MHz), High Output Current (45-mA), Unity-Gain Stable Op Amp

    • SBOSA16 October   2020 OPA455

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  • OPA455 High-Voltage (150-V), Wide-Bandwidth (6.5-MHz), High Output Current (45-mA), Unity-Gain Stable Op Amp
  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
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Status Flag Pin
      2. 7.3.2 Thermal Protection
      3. 7.3.3 Current Limit
      4. 7.3.4 Enable and Disable
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 High DAC Gain Stage for Semiconductor Test Equipment
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Improved Howland Current Pump for Bioimpedance Measurements in Multiparameter Patient Monitors
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Thermally-Enhanced PowerPAD™ Package
      2. 10.1.2 PowerPAD™ Integrated Circuit Package Layout Guidelines
      3. 10.1.3 Pin Leakage
      4. 10.1.4 Thermal Protection
      5. 10.1.5 Power Dissipation
      6. 10.1.6 Heat Dissipation
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 TINA-TI™ Simulation Software (Free Download)
        2. 11.1.1.2 TI Precision Designs
        3. 11.1.1.3 WEBENCH® Filter Designer
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
  13. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • DDA|8
    • MPDS092F
Thermal pad, mechanical data (Package|Pins)
  • DDA|8
    • PPTD043J
Orderable Information
  • sbosa16_oa
  • sbosa16_pm
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DATA SHEET

OPA455 High-Voltage (150-V), Wide-Bandwidth (6.5-MHz), High Output Current (45-mA), Unity-Gain Stable Op Amp

1 Features

  • Wide power-supply range:
    • ±6 V to ±75 V
    • 12 V to 150 V
  • High-output load drive: IO ±45 mA
  • Current limit protection
  • Thermal protection
  • Status flag
  • Independent output disable
  • Gain bandwidth: 6.5 MHz
  • Slew rate: 32 V/µs
  • Wide temperature range: –40°C to +85°C
  • 8-pin HSOIC (SO PowerPAD™) package

2 Applications

  • Semiconductor test
  • Optical module
  • Lab and field instrumentation
  • Semiconductor manufacturing
  • Multiparameter patient monitor
  • Display panel for PC and notebooks

3 Description

The OPA455 is a high-voltage (150-V), high current drive (45-mA), unity-gain stable operational amplifier with a gain-bandwidth product of 6.5 MHz and slew rate of 32 V/us. As a result of the amplifier wide output range, this device is an excellent choice for high-voltage piezo driving, avalance photodiode biasing, and high-voltage Howland current pump or voltage output stages.

The OPA455 is internally protected against overtemperature conditions and current overloads. The device is fully specified to perform over a wide power-supply range of ±6 V to ±75 V, or on a single supply of 12 V to 150 V. The status flag is an open-drain output that allows the device to be easily referenced to standard, low-voltage, logic circuitry. This high-voltage operational amplifier provides excellent accuracy and wide output swing, and is free from phase-inversion problems that are often found in similar amplifiers.

The output can be disabled using the enable-disable (E/D) pin. The E/D pin has a common return pin to allow for easy interface to low-voltage logic circuitry. This disable is accomplished without disturbing the input signal path, not only saving power but also protecting the load.

Device Information
PART NUMBERPACKAGE(1)BODY SIZE (NOM)
OPA455HSOIC (8)4.89 mm × 3.90 mm
(1) For all available packages, see the package option addendum at the end of the data sheet.

 

GUID-A8EE5459-7029-4DDF-96BC-065C92B36B91-low.gifOPA455 Block Diagram
GUID-20200923-CA0I-DW7G-PX89-JVKBBSNGTFQM-low.svgMaximum Output Voltage vs Frequency

4 Revision History

DATE REVISION NOTES
October 2020 * Initial Release

5 Pin Configuration and Functions

GUID-47736C50-01D6-498B-A173-A6659250FBAF-low.svgFigure 5-1 DDA (8-Pin, SO PowerPAD™) Package, Top View
Table 5-1 Pin Functions
PINI/ODESCRIPTION
NAMENO.
E/D8IEnable (active high) or disable (active low), with respect to E/D Com pin
E/D Com1IEnable and disable common
–IN2IInverting input
+IN3INoninverting input
OUT6OOutput
Status Flag5OStatus Flag is an open-drain active-low output referenced to E/D Com. This pin goes active for either an overcurrent or overtemperature condition.
V–4—Negative (lowest) power supply
V+7—Positive (highest) power supply
PowerPADPowerPAD—The PowerPAD is internally connected to V–. The PowerPAD must be soldered to a printed-circuit board (PCB) connected to V–, even with applications that have low power dissipation.

 
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