Hi, I need this, the smallest possible, or lowpassgates also...

That's easy enough: 2hp's EG. Most basic synth functions exist as 2hp modules, plus a couple of other manufacturers that also make modules in that 2 hp size.

Coincidentally, I just saw that Michigan Synth Works released an updated Pique and expander for CV to each parameter of the ADSR (plus many other functions) in 6hp total.