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超声领域的低噪声放大器推荐

user6178255

Prodigy 100 points

Other Parts Discussed in Thread: OPA192, OPA211, OPA827, OPA2189, OPA2211A, OPA2140

应用于超声无损检测领域，激励信号频率20K~100K，供电范围正负5V，求推荐TI相关的产品！！！

over 4 years ago

0 Kailyn Chen over 4 years ago

TI__Guru**** 295050 points

您好，需要放大多少幅值范围的输入信号，从而确定运放的带宽。需要几个通道？

0 user6178255 over 4 years ago in reply to Kailyn Chen

Prodigy 100 points

输入信号放大幅值几十个毫伏，通道需要单通道的或者双通道的都可以

0 user6178255 over 4 years ago in reply to user6178255

Prodigy 100 points

运放前端连接压电陶瓷传感器，阻抗比较大。运放输出端连接到NI的数据采集卡

0 Kailyn Chen over 4 years ago in reply to user6178255

TI__Guru**** 295050 points

输入几十mV，假设50mV，如果输出能到电源轨5V的话，放大倍数为100，100K频率的话，需要GBW=10Mhz。

单通道的话参考OPA827，OPA211，OPA192，双通道的话参考OPA2211A，OPA2140，OPA2189等。

0 user6178255 over 4 years ago in reply to Kailyn Chen

Prodigy 100 points

好的，谢谢您