SBOS973A June   2019  – September 2019 OPA2834

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      1-kHz FFT Plot (VOUT = 1 VRMS, RL = 100 kΩ, G = 1)
      2.      Low-Side, Current-Shunt Monitoring
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  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
    5. 7.5 Electrical Characteristics: 3V to 5V
    6. 7.6 Typical Characteristics: Vs = 5 V
    7. 7.7 Typical Characteristics: VS = 3.0 V
    8. 7.8 Typical Characteristics: ±2.5-V to ±1.5-V Split Supply
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1 Input Common-Mode Voltage Range
      2. 8.3.2 Output Voltage Range
      3. 8.3.3 Low-Power Applications and the Effects of Resistor Values on Bandwidth
      4. 8.3.4 Driving Capacitive Loads
    4. 8.4 Device Functional Modes
      1. 8.4.1 Split-Supply Operation (±1.35 V to ±2.7 V)
      2. 8.4.2 Single-Supply Operation (2.7 V to 5.4 V)
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Noninverting Amplifier
      2. 9.1.2 Inverting Amplifier
    2. 9.2 Typical Applications
      1. 9.2.1 Low-Side Current Sensing
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
      2. 9.2.2 Field Transmitter Sensor Interface
      3. 9.2.3 Ultrasonic Flow Meters
      4. 9.2.4 Microphone Pre-Amplifier
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.1.2 Inverting Amplifier

The OPA2834 can be used as an inverting amplifier with a signal input to the inverting input, VIN–, through the gain-setting resistor RG. Figure 46 illustrates a basic block diagram of the circuit.

The output of the amplifier can be calculated according to Equation 2 if VIN = VREF + VSIG.

Equation 2. OPA2834 EQ2_vout2_los713.gif

The signal gain of the circuit is given by OPA2834 Iline2_G2_los713.gif and VREF provides a reference point around which the input and output signals swing. Output signals are 180˚ out-of-phase with the input signals. The nominal value of RF must be 3.6 kΩ for inverting gains.