ACM800 PM864AK01 PM861AK02电源模块 励磁控制器ABB

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 如图20所示，OPA858的宽带宽和转换速率使其成为高速信号链前端的理想放大器。图52显示了作为频率函数的OPA858的开环输出阻抗。为了实现高转换速率和低频率输出阻抗，OPA858的输出摆幅限制在大约3 V。OPA852通常与具有有限输入范围的高速流水线ADC和闪存ADC结合使用。因此，OPA858输出摆动范围与的电压噪声规格相结合，大化了信号链的整体动态范围。频率（Hz）电流噪声（A/óHz）1k 10k 100k 1M 10M 100M 1G 1p 10p 100p 100f 10f 1f D607频率（赫兹）开环输出阻抗（欧姆）0 2 4 6 8 10 12 14 16 18 20 10k 10k 1M 100M 10G 10G D601 18 OPA858 SBOS629A–2018年4月–2018年7月修订www.ti.com产品文件夹链接：OPA 858提交文档反馈版权所有©2018，Texas Instruments Incorporated Feature Description（续）图52.开环输出阻抗（ZOL）vs频率9.3.5电流噪声CMOS和JFET输入放大器在低频下的输入阻抗超过几GΩs。然而，在较高频率下，tsub-ns pulse edge as seen in Figure 20. The wide bandwidth and slew rate of the OPA858 make it an ideal amplifier for high-speed, signal-chain front ends. Figure 52 shows the open-loop output impedance of the OPA858 as a function of frequency. To achieve high slew rates and low output impedance across frequency, the output swing of the OPA858 is limited to approximately 3 V. The OPA858 is typically used in conjunction with high-speed pipeline ADCs and flash ADCs that have limited input ranges. Therefore, the OPA858 output swing range coupled with the class-leading voltage noise specification maximizes the overall dynamic range of the signal chain. Frequency (Hz) Current Noise (A/óHz) 1k 10k 100k 1M 10M 100M 1G 1p 10p 100p 100f 10f 1f D607 Frequency (Hz) Open-Loop Output Impedance (ohms) 0 2 4 6 8 10 12 14 16 18 20 10k 100k 1M 10M 100M 1G 10G D601 18 OPA858 SBOS629A –APRIL 2018–REVISED JULY 2018 www.ti.com Product Folder Links: OPA858 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated Feature Description (continued) Figure 52. Open-Loop Output Impedance (ZOL) vs Frequency 9.3.5 Current Noise The input impedance of CMOS and JFET input amplifiers at low frequencies exceed several GΩs. However, at higher frequencies, t

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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.

●操作人员:

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。

●充分学习产品使用手册，否则非专业人员可能会造成人身危险。

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

●服务行业

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,