ZHCSLE0B August   2021  – August 2023 JFE2140

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  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
    6. 6.6 Typical Characteristics
  8. 7 Parameter Measurement Information
    1. 7.1 AC Measurement Configurations
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Precision Matching
      2. 8.3.2 Ultra-Low Noise
      3. 8.3.3 Low Gate Current
      4. 8.3.4 Input Protection
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Input Protection Diodes
      2. 9.1.2 Cascode Configuration
      3. 9.1.3 Common-Source Amplifier
      4. 9.1.4 Composite Amplifiers
    2. 9.2 Typical Applications
      1. 9.2.1 Low-Noise, Low-Power, High-Input-Impedance Composite Amplifier
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Differential Front-End Design
        1. 9.2.2.1 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Development Support
        1. 10.1.1.1 PSpice® for TI
        2. 10.1.1.2 TINA-TI™ 仿真软件（免费下载）
        3. 10.1.1.3 TI 参考设计
        4. 10.1.1.4 滤波器设计工具
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 接收文档更新通知
    4. 10.4 支持资源
    5. 10.5 Trademarks
    6. 10.6 静电放电警告
    7. 10.7 术语表
  12. 11Mechanical, Packaging, and Orderable Information

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机械数据 (封装 | 引脚)
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订购信息

9.2.1 Low-Noise, Low-Power, High-Input-Impedance Composite Amplifier

The JFE2140 can be configured to provide a low-noise, high-input impedance single-ended amplifier stage that can be optimized for ultra-low noise performance at low power levels. This configuration is designed for battery-powered audio applications such as guitar pedals, amplifiers and handheld recorders. The OPA1692, a low-power, dual audio amplifier, is used for the composite voltage-feedback amplifier, as well as a rail-splitting amplifier that centers the ground voltage between the battery positive and negative voltage.

GUID-20210810-SS0I-0GQ6-NKX3-4FVLLLPDFT9R-low.gif Figure 9-7 Low-Noise, Low-Power, High-Input-Impedance Composite Amplifier
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