| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a detector, a physical quantity measuring instrument, electronic equipment, etc. with an S/N ratio enhanced at low cost. <P>SOLUTION: This detector for detecting a drive vibration excited by a vibrator in an oscillation loop and a detection signal corresponding to a physical quantity to be measured, includes an amplification circuit amplifying a signal corresponding to the drive vibration and the physical quantity, a synchronous detection circuit for detecting an amplified signal of the amplification circuit in synchronization with an oscillation signal in the oscillation loop, an impedance conversion circuit converting an output impedance of the synchronous detection circuit, and first and second LPFs supplied with an output signal of the conversion circuit to output first and second detection signals, respectively. Each of the first and second LPFs comprises a switched capacitor filter circuit, and the first and second LPFs are different from each other in their gain. <P>COPYRIGHT: (C)2011,JPO&INPIT |
