By Gain of -10 to 10 I meant that inverting.

Hence, Gain = 1, Vin = Vout,
Gain = 0.5 , Vout = Vin / 2

Gain = -1 Vout = -Vin

Gain = 0, Vout = 0

It seems there are two different conventions going on, of which I had no idea that existed. I've always used - to mean inverting.

Looks like some good ciruits have popped up that i should try and remember. Going to go simulate them now and see how they work out.

 

When I first read the original post, I jumped to the conclusion that the gain was to be variable from -10dB to +10dB.

It later occured to me that the gain was to be variable from -10 to +10. Not the same as the first statement.

When using dB, a negative gain is attenuation, a reduction in power.
A positive gain is a gain in power.

A negative gain when just specifying a numerical value infers that the amplifier is inverting, ie when the input goes more positive, the output goes more negative.

JimB

 

Edit:
Never mind - our OP has clarified his question.