Can slow low-cost optocouplers be used in MIDI applications?

Why Low Voltage Cascode Current Mirror? ECE 3110 - Lecture 8 - Part 1 - Low Output and High Swing Cascode ECE 3110 - Lecture 8 - Part 3 - Low Output and High Swing Cascode ECE 3110 - Lecture 8 - Part 4 - Low Output and High Swing Cascode SUPER ПРОСТОЙ MEGA УСИЛИТЕЛЬ ! Куда уходит рабочая точка ? Electronics: Increase low-frequency gain of a cascode amplifier Circuit design using Cadence Virtuoso | Low Voltage Cascode Current Mirror Designing Low Voltage Cascode Current Mirror in Cadence Virtuoso - DC Analysis & AC response 6 Low Voltage Cascode Current Mirror | Virtuoso Cadence | Simulation | gpdk180 | Full Tutorial cascode preselector Chapter 10: Frequency Response