A sensor chip includes a first substrate with a first surface and a second surface including at least one CMOS circuit, a first MEMS substrate with a first surface and a second surface on opposing sides of the first MEMS substrate, a second substrate, a second MEMS substrate, and a third substrate including at least one CMOS circuit. The first surface of the first substrate is attached to a packaging substrate and the second surface of the first substrate is attached to the first surface of the first MEMS substrate. The second surface of the first MEMS substrate is attached to the second substrate. The first substrate, the first MEMS substrate, the second substrate and the packaging substrate are provided with electrical inter-connects.