ABB ACM800控制器PM864AK01 PM861AK02电源模块 励磁控制器

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 AOL（V）17 OPA858 www.ti.com SBOS629A–2018年4月–2018年7月修订产品文件夹链接：OPA858Copyright©2018，Texas Instruments Incorporated Submit Documentation Feedback Feature Description（续）9.3.3宽增益带宽产品图10显示了OPA859的开环幅度和相位响应。通过确定AOL为60 dB的频率，并将该频率乘以因子1000，计算任何运算放大器的增益带宽乘积。AOL响应中的第二极出现在幅度超过0 dB之前，且合成相位裕度小于0°。这表明增益为0 dB（1 V/V）时不稳定。不稳定单位增益的放大器称为失补偿放大器。与具有相同静态功耗的单位增益稳定放大器相比，去补偿放大器通常具有更高的增益带宽乘积、更高的转换速率和更低的电压噪声。图50显示了作为温度函数的OPA858的开环幅度（AOL）。结果表明，随温度变化小。在7V/V（16.9dB）噪声增益下配置的OPA858的相位裕度在温度范围内接近55°。类似地，图51显示了OPA858的AOL大小作为工艺变化的函数。结果显示了标称工艺角点的AOL曲线和偏离标称值一个标准偏差的变化。AOL (V) 17 OPA858 www.ti.com SBOS629A –APRIL 2018–REVISED JULY 2018 Product Folder Links: OPA858 Copyright © 2018, Texas Instruments Incorporated Submit Documentation Feedback Feature Description (continued) 9.3.3 Wide Gain-Bandwidth Product Figure 10 shows the open-loop magnitude and phase response of the OPA858. Calculate the gain bandwidth product of any op amp by determining the frequency at which the AOL is 60 dB and multiplying that frequency by a factor of 1000. The second pole in the AOL response occurs before the magnitude crosses 0 dB, and the resultant phase margin is less than 0°. This indicates instability at a gain of 0 dB (1 V/V). Amplifiers that are not unity-gain stable are known as decompensated amplifiers. Decompensated amplifiers typically have higher gainbandwidth product, higher slew rate, and lower voltage noise, compared to a unity-gain stable amplifier with the same amount of quiescent power consumption. Figure 50 shows the open-loop magnitude (AOL) of the OPA858 as a function of temperature. The results show minimal variation over temperature. The phase margin of the OPA858 configured in a noise gain of 7 V/V (16.9 dB) is close to 55° across temperature. Similarly Figure 51 shows the AOL magnitude of the OPA858 as a function of process variation. The results show the AOL curve for the nominal process corner and the variation one standard deviation from the nominal. 

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●使用前:

在操作和维护，安装设备之前，请阅读并严格遵守安全相关的信息。

Read and strictly follow safety-related information before operatingmaintainingand installing equipment.

●使用者要求:

必须从事安装，组装或维护设备等相关工控电气机械以及其他相关技术的人员。

Must be engaged in the installation,assembly or maintenance of equipment and other related industriacontroeectrica machinery and other related technica personne.应用范围:

应用于品牌本系列工业以及生产生活自动化设备产品。

Used in the brand of this series of industriaand production automation eauipment products

适用于场景:系统集成，非标定制，产线升级改造，原设备电气替换等等。

Suitable for scenarios:system integration,non-standard customizationproduction line upgrading and transformation,electrical replacement of original equipment,etc.

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应该由本品牌专业培训操作员来安装、操作和维修设备。专业人员具有技术能力强，熟悉安全信息和安全实施:

熟悉设备的安装加工、操作和维护:熟悉处理所有的潜在危险情况。

Equipment should be installed,operated and maintained by trained operators from the brand

●危险情况

警告

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●除了产品特性以及功能，还需了解产品的使用寿命环境。

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Study the product instruction manual thoroughlyotherwise it may cause personal danger to non-professionals.

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适用水泥，木业，石业，橡胶，石油，化工，发电，环保，水处理，制冷，交通，钢铁，食品，饮料，船舶，制冷等行业

Applicable to cementwood,stone,rubber,petroleumchemical, power generation,