TIA芯片等效输入噪声电流密度数据

TIA的等效输入噪声电流密度，作为TIA的重要参数之一，并不能直接测量。本数据需要在TIA无输入的情况下测量其输出电压噪声密度。TIA的噪声主要在其输入信号较小、增益最大时影响较大，此时输入端等效的信噪比相较于输入信号较大时是最低的。在得到1GHz~25GHz频率范围内的TIA输出电压噪声密度后，选取噪声密度最大的频点，通过TIA小信号带宽数据中得到的直流增益数据，折算成等效输入噪声电流密度。

The equivalent input noise current density of TIA, as one of the critical parameters of TIA, cannot be directly measured. This dataset requires measuring the output voltage noise density of TIA with no input signal applied to its input terminal. The noise of TIA exerts the most significant impact when its input signal is minimal and the gain reaches its maximum, at which point the equivalent signal-to-noise ratio (SNR) at the input terminal is the lowest compared to scenarios with larger input signals. After obtaining the output voltage noise density of TIA within the frequency range of 1 GHz to 25 GHz, select the frequency point with the maximum noise density, then convert it into the equivalent input noise current density using the DC gain data derived from the small-signal bandwidth dataset of TIA.

搜集汇总

背景与挑战

背景概述

该数据集提供了TIA芯片的等效输入噪声电流密度数据，这是一个关键参数，无法直接测量。数据通过测量1GHz至25GHz频率范围内的输出电压噪声密度，并结合直流增益折算而成。