. . . 3x

sequential ½ to 2x per stage positive factor amplifier ::

? fast 1x to 1.77x amplifier -- i just try to get a grasp of these things . . .

another 200kHz cascadable "absolute" multiplier

and yet another 200kHz 1

---

[Eop]

prev. follow up x2

modified known (but much likely a lot) simplified circuit

versus not so much slower but a lot more simple circuit

---

update :: 2018.04.21 -- about the poor performance of above . . .

---

[Eop]

examining a couple of web variable gain amplifier circuits

attenuating

the 0 to 34 mV  control voltage range sounds like a bit utopistic here
(everithing else looks good however)

amplifying/attenuating

---

2018.04.18 -- Update ::

bipolar v. of the previous

integrated analog multiplier substitute for VGA

---

[Eop]