ZHCSI38E March   2001  – April 2018 OPA2355 , OPA3355 , OPA355

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      简化原理图
  4. 4 修订历史记录
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions: OPA355
    2.     Pin Functions: OPA2355
    3.     Pin Functions: OPA3355
  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: OPA355
    5. 7.5 Thermal Information: OPA2355
    6. 7.6 Thermal Information: OPA3355
    7. 7.7 Electrical Characteristics: VS = 2.7 V to 5.5 V (Single-Supply)
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Operating Voltage
      2. 8.3.2 Enable Function
      3. 8.3.3 Output Drive
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Transimpedance Amplifier
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Optimizing The Transimpedance Circuit
        3. 9.2.1.3 Application Curve
      2. 9.2.2 High-Impedance Sensor Interface
      3. 9.2.3 Driving ADCs
      4. 9.2.4 Active Filter
    3. 9.3 Video
    4. 9.4 Wideband Video Multiplexing
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 相关链接
    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 术语表
  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

9.2.1 Transimpedance Amplifier

Wide gain bandwidth, low input bias current, low input voltage, and current noise make the OPAx355 series a preferred wideband photodiode transimpedance amplifier family. Low voltage noise is important because photodiode capacitance causes the effective noise gain of the circuit to increase at high frequencies.

The key elements to a transimpedance design, as shown in Figure 31, are the expected diode capacitance (C[D]), which must include the parasitic input common-mode and differential-mode input capacitance (4 pF + 5 pF), the desired transimpedance gain (R[FB]), and the gain-bandwidth (GBW) for the OPAx355 family (20 MHz). With these three variables set, the feedback capacitor value (C[FB]) controls the frequency response. C[FB] includes the stray capacitance of R[FB], which is 0.2 pF for a typical surface-mount resistor.

OPA355 OPA2355 OPA3355 ai_trans_amp_dual_sbos195.gif
1.

NOINDENT:

C(FB) is optional to prevent gain peaking. C(FB) includes the stray capacitance of R(FB).
Figure 31. Dual-Supply Transimpedance Amplifier