Patent ID: 8324729

Claim:
A packaging structure for an electromechanical resonator system, the packaging structure comprising: a control chip for a microelectromechanical resonator; an electromechanical resonator chip that (i) includes the microelectromechanical resonator and (ii) is mounted on the control chip in a stacked die configuration, wherein the electromechanical resonator chip is physically coupled to the control chip by a thermally conductive epoxy; a lead frame including at least one electrical lead having a mounting surface and an electrical contact surface, wherein the stacked die configuration is mounted on and physically coupled to the mounting surface of the electrical lead, and wherein the stacked die configuration is electrically coupled to the electrical lead; and a mold compound, enclosing at least a portion of the lead frame and stacked die configuration of the control chip and the electromechanical resonator chip, wherein (i) the mounting surface of the electrical lead and the portion of the stacked die configuration which is mounted thereon are enclosed in the mold compound and (ii) the electrical contact surface of the electrical lead is externally exposed.