TI中文支持网Part Number:TLV2771
TLV2771的带宽太小了，帮忙推荐一个适用于超声成像接收的前置放大器Amplifier选型和参考设计电路，需要工作带宽为0.5~20MHz，电压放大增益60dB，输入电容小于5pF。此外我还想问以下，我的输入端是压电晶体（频率几MHz），我需要的放大器设计有什么需要注意的吗，是必须要电荷放大器吗？
The bandwidth of the TLV2771 is too small, so I recommend a preamplifier Amplifier selection and reference design circuit suitable for ultrasonic imaging reception, which requires a working bandwidth of 0.5~20MHz, a voltage amplification gain of 60dB, and an input capacitance of less than 5pF. In addition, I would like to ask the following, my input is a piezoelectric crystal, is there anything I need to pay attention to in the amplifier design, is it necessary to charge the amplifier?
尹平：
我更喜欢的设计是频率可调的，带宽也许3MHz以上，有什么推荐的器件选型和电路设计吗。
My preferred design is that the frequency is adjustable, the bandwidth may be more than 3MHz, is there any recommended device selection and circuit design.
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Daniel：
您好
https://www.ti2k.com/wp-content/uploads/ti2k/DeyiSupport_放大器_ultrasound-scanner
https://www.ti2k.com/wp-content/uploads/ti2k/DeyiSupport_放大器_ultrasound-smart-probe
这是官方给的超声成像的相关的完整应用的方案，请您参考 。
