ZHCSJY2A June   2019  – September 2019 OPA2834

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      1kHz FFT 图（VOUT = 1VRMS，RL = 100kΩ，G = 1）
      2.      低侧电流分流监控
  4. 4 修订历史记录
  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. 12器件和文档支持
    1. 12.1 文档支持
      1. 12.1.1 相关文档
    2. 12.2 接收文档更新通知
    3. 12.3 社区资源
    4. 12.4 商标
    5. 12.5 静电放电警告
    6. 12.6 Glossary
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

9.1.1 Noninverting Amplifier

The OPA2834 can be used as a noninverting amplifier with a signal input to the noninverting input, VIN+. Figure 45 illustrates a basic block diagram of the circuit.

The amplifier output can be calculated according to Equation 1 if VIN = VREF + VSIG.

Equation 1. OPA2834 EQ1_vout_los713.gif

The signal gain of the circuit is set by OPA2834 Iline1_G_los713.gif, and VREF provides a reference around which the input and output signals swing. Output signals are in-phase with the input signals.

The OPA2834 is designed for the nominal value of RF to be 3.6 kΩ in gains other than +1. This value gives excellent distortion performance, maximum bandwidth, best flatness, and best pulse response. RF = 3.6 kΩ must be used as a default unless other design goals require changing to other values. All test circuits used to collect data for this document have RF = 3.6 kΩ for all gains other than +1. A gain of +1 is a special case where RF is shorted and RG is left open.