Semiconductor Yield Estimation
Semiconductor Yield Estimation Say you have an amplifier with Gain spec of x dB and you want to understand how many chips will pass this spec. What do you do? You measure all the parts you have, count the parts where gain fell below x dB and divide it to total number of parts, and […]
Single Tone Distortion
Distortion of a Single Tone in a non-linear System How does a single tone gets distorted in a non-linear system, what distortion products it generates and some insights into what goes in signal gain. Assume a non-linear system which can be modelled using a polynomial: $$V_o = a_o+a_1V_i+a_2V_i^2+a_3V_i^3+a_4V_i^4+a_5V_i^5$$ Let’s excite it with a single tone: […]
Intermodulation of Two Tones
Intermodulation of Two Tones Admit it. You are lazy and don’t make notes. You do this math every time you need to remember what distortion products are generated by intermodulation of two tones and what is their relative level. No more. We are doing the math now, so you don’t have to. Intermodulation Math Assume […]