Patent ID: 11885619
Assignee: STMICROELECTRONICS S.R.L.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. An electronic system, comprising:
a microelectromechanical gyroscope including:
a support structure;
a driving mass capacitively coupled to the support structure and movable relative to the support structure according to a driving axis; and
an oscillating microelectromechanical loop, having a resonance frequency and a loop gain and including the driving mass, a sensing interface, configured to sense a position of the driving mass with respect to the support structure, and a gain control stage, configured to maintain a modulus of the loop gain at a unitary value at the resonance frequency; and

processing circuitry coupled to the microelectromechanical gyroscope,
wherein the gain control stage includes a sampler and an transconductance operational amplifier in open-loop configuration,
wherein the sampler is configured to acquire samples of a loop signal from the sensing interface in a first operative condition and to transfer the samples to the transconductance operational amplifier in a second operative condition, and
wherein the sampler is configured to decouple the transconductance operational amplifier from the sensing interface in the first operative condition and in the second operative condition.