ADI 领导世界新潮流的新型放大器技术[I]ADI

简介：ADI 领导世界新潮流的新型放大器技术[I]

问：1.what"s the difference between Instrumental Amp and Operational Amp?
答： An instrumentation amplifier amplifies the difference between its two input signals. So it is designed so that the + and - inputs are not the same. An operational amplifier is generally used with external negative feedback. As a result the + and - voltages

问：放大器中最快的反应速度是多少？编程为什么格式？
答： AD8353/AD8354很快。
AD603用电压控制增益（－10～41dB， 90MHz BW），
AD8323用串行口控制增益（Gain Programmable in 0.75 dB Steps Over 53.5 dB）
AD8367 是500MHz －2.5 dB to +42.5 dB VGA。

AD8353 FEATURES
Fixed gain of 20 dB
Operational Frequency to 100 MHz to

问：请问在开关电源的误差反馈中用那种类型的放大器比较适合?
答： 通用的即可，可考虑响应速度快的。

问：1。我在多通道数据采集电路中，如何减低通道切换时的抖动？是否可以通过在多路开关（如4051）的输入、放大器的输出之间串联一个合适的电阻将其消除至最小？
2。AD公司的对数放大器可否运用于单极性脉冲信号的测量？
答： 1. Add a buffer to increase the driver ability, use sutaible filter, chose a fast set AMP to driver A/D. Use a serial resistor will decrease the voltage, should adjust gain.
2. Yes. LOG AMP can detect both DC and AC signal. Refer to AD8304/8307/8310 da

问：I want to know if it is the ADI"s fashion to provide more features and high switching frequency to make smaller size products?
答： I"m not sure exactly what you are looking for when you say switching frequency. As a company, ADI is always striving to make faster devices with extra features.

问：请问测量几千周到几百千周信号源的输出功率用什么型号的集成电路比较好？
答： It depends on your signal magnitude and accuracy. Please contact local ADI office or distributors, giving more information. Suggest using digital circuit to calculate the output power.

问：请问adi公司的模拟信号乘法器可以用于高频信号的功率测量电路吗？
答： 最好是用AD8302，它是基于模拟乘法。
FEATURES
Measures Gain/Loss and Phase from VLF to 3 GHz
Dual Demodulating Log Amps and Phase Detector
Input Range –62 dBm to –2 dBm in 50Ω System
Accurate Gain Measurement Scaling (30 mV/dB)
Accuracy T

问：How can I get the detail infomation about ADI products?
答： Please contact our local office or visit our web site @http://www.analog.com to down-load complete data sheet.

问：我实验领域的应用环境的干扰特别大，请问新型放大器的抗干扰性能如何？是否适合强干扰环境。
答： Use differential input/output amplifier such as AD8130/31/32/38 can solvesome of the issues.

问：我想索取ADI公司有关新型放大器的技术资料可以吗？
单位：西门子信号有限公司工程部　陆臣道
地址：西安经济开发区　凤城二路30号　邮编：710016
电话：029-6522777-318
答： Please contact our office.