ZHCS509E November 2011 – June 2018 OPA180 , OPA2180 , OPA4180
PRODUCTION DATA.
- 1 特性
- 2 应用范围
- 3 说明
- 4 修订历史记录
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information: OPA180
- 7.5 Thermal Information: OPA2180
- 7.6 Thermal Information: OPA4180
- 7.7 Electrical Characteristics: VS = ±2 V to ±18 V (VS = 4 V to 36 V)
- 7.8 Typical Characteristics: Table of Graphs
- 7.9 Typical Characteristics
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文档支持
- 13机械、封装和可订购信息
8.3.4 Capacitive Load and Stability
The dynamic characteristics of the OPAx180 are optimized for a range of common operating conditions. The combination of low closed-loop gain and high capacitive loads decreases the phase margin of the amplifier and can lead to gain peaking or oscillations. As a result, heavier capacitive loads must be isolated from the output. The simplest way to achieve this isolation is to add a small resistor (for example, ROUT equal to 50 Ω) in series with the output. Figure 27 and Figure 28 illustrate graphs of small-signal overshoot versus capacitive load for several values of ROUT. See the Feedback Plots Define Op Amp AC Performance, application report, available for download from the TI website, for details of analysis techniques and application circuits.
| RL = 10 kΩ | 100-mV output step |
| RL = 10 kΩ | 100-mV output step |