A basic Max for Live device that can be combined with a Teensy and one or more MCP4922 DAC chips. MIDI notes are converted to 12-bit data that represents a voltage range of 0 - 5V, at a rate of 1V per octave. Pitchbend is mapped, too, with a user defined range. Note-ons and offs trigger gate events. The note length can be left 'as-is' or set as a predefined length.
Very rough demo shown below, using a Teensy 2.0, one MCP4922, gate output and pitch CV output controlling a Moog Mother-32.
Download this device here: http://milkcrate.com.au/_other/downloads/M4L/little-scale.midi.notes.to.pitch.cv.gate.amxd