Please find attached a proposed schematic [jpeg and pdf] describing the subject title. I will explain its operation in a future post; unless someone else beats me to it. Please look at the picture and note:
- Two F5s are shown.
- The right side amp is hand-drawn and is skeletal. It is a mirror image of the left side side amp. The right side amp amplifies the Negative input signal.
- The schematic of the left side amp is well-known to y'all. I whited out some of the bias elements around the power output P-MOSFET for the sake of clarity. It amplifies the Positive input signal.
- Note the resistor Rxt which cross-couples or joins the source ports of the power output P-MOSFETs Q3 and Q3'.
- Ditto for the resistor Rxb which joins [cross-couples] the source ports of the output power N-MOSFETs Q4 and Q4'