⚡ 本页包含 AI 生成的分析内容，仅供参考
本文提出了一种具有单调对数压缩和高电流监测功能的跨阻放大器，通过两级压缩结构实现了130dB的超宽动态范围，解决了光学传感应用中输入光电流动态范围极大导致线性放大困难的问题。
signal. This is especially a problem for optical sensing applications, in which the input photocurrent usually has a very wide dynamic range (DR). Various methods have been developed to overcome this limitation [1-4]. The 2-stage compression concept described here significantly improves our previous results achieved with 1-stage compression [5,6]. The DR is increased by 18dB compared to [5] and by 10dB relative to [6]. Moreover, the compression is monotonic over the full input current range. The proposed TIA responds linearly to the input currents that are smaller than the first break-point current IB1, while larger currents are logarithmically compressed to avoid the saturation of the TIA (see Fig. 3.7.1). The lower bound on the input DR is given by the equivalent RMS input-noise current (IN in Fig.3.7.1), and it is affected by the TIA transimpedance, which is set by the feedback resistor in the TIA. However, the BW is indirectly proportional to the transimpedance of the TIA, and ther
TU Vienna, Vienna, Austria, Receiving a high-power optical signal using a linear transimpedance amplifier (TIA) is often a very difficult task. Large input photocurrents saturate the TIA and make it insensitive to the input