Nested Differentiating Feedback Loops in Simple Audio Amplifiers

Cherry EM. Nested Differentiating Feedback Loops in Simple Audio Amplifiers. J Audio Eng Soc. 1982;30(5):295-305. Available from: https://aes.org/publications/elibrary-page/?id=3843

@article{Cherry1982_3843,
  author = {Cherry, Edward M.},
  title = {{Nested Differentiating Feedback Loops in Simple Audio Amplifiers}},
  journal = {Journal of the Audio Engineering Society},
  volume = {30},
  number = {5},
  pages = {295--305},
  year = {1982},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=3843}
}

TY  - JOUR
TI  - Nested Differentiating Feedback Loops in Simple Audio Amplifiers
AU  - Cherry, Edward M.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 30
IS  - 5
SP  - 295
EP  - 305
PY  - 1982
DA  - 1982/05/06
UR  - https://aes.org/publications/elibrary-page/?id=3843
PB  - Audio Engineering Society
LA  - en
AB  - Many audio power amplifiers consist in essence of a long-tailed-pair first stage, a lag-compensated common-emitter stage with its emitter on a supply rail, a complementary-emitter-follower output stage, and overall negative feedback. Two nested differentiating feedback loops can be added to this basic topology, to achieve between one and two orders of magnitude reduction in distortion, at little increase in component cost. Six extra components are essential; two small-signal transistors, one resistor, and two capacitors. Further small components such as zener diodes and bypass capacitors may be required, depending on the details of the supply rails the amplifier.
ER  -