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LTC 1966 not performing properly. Will not go near 0v output

This is an rms to dc converter.  Got some working fine. The latest are three together, same p.s.

Pulling my hair out on these.

Disconnected input from IN1. IN2 is connected to 1/2 Vcc. Vcc off 5.59 v, so IN2 is measured to be 2.8v. There is always some positive output voltage.

Cannot get it to get under 50 or 100 mv. Yes I do have the 1uF Cave there. I am using electrolytics for that.

I will get higher DC output when I do feed in an ac signal but its the inability to get near zero that blowing this up.

I've tried more than one power source. Even changed out the LTC1966 module.