Physical quantity detection system, electronic apparatus, and moving object

A physical quantity detection system comprising:

• a first physical quantity sensor that includes a first physical quantity transducer, a first drive circuit which drives the first physical quantity transducer, and a first detection circuit which outputs first physical quantity information corresponding to a first physical quantity, based on a first detection signal which is outputted from the first physical quantity transducer;
• a second physical quantity sensor that includes a second physical quantity transducer, a second drive circuit which drives the second physical quantity transducer, and a second detection circuit which outputs second physical quantity information corresponding to a second physical quantity, based on a second detection signal which is outputted from the second physical quantity transducer;
• a first power supply line to which a power supply voltage that is supplied to the first physical quantity sensor from a common power supply of the first physical quantity sensor and the second physical quantity sensor is applied;
• a second power supply line to which the power supply voltage that is supplied to the second physical quantity sensor from the power supply is applied;
• a first decoupling circuit which is connected to a path of the first power supply line and has a first band elimination frequency characteristic;
• and
• a second decoupling circuit which is connected to a path of the second power supply line and has a second band elimination frequency characteristic,
• wherein, in a case where a first drive frequency of the first drive circuit is referred to as fd1, a second drive frequency of the second drive circuit is referred to as fd2, a cutoff frequency on a low frequency side of the first band elimination frequency characteristics is referred to as fCL1, a cutoff frequency on a low frequency side of the second band elimination frequency characteristics is referred to as fCL2, a cutoff frequency on a high frequency side of the first band elimination frequency characteristics is referred to as fCH1, and a cutoff frequency on a high frequency side of the second band elimination frequency characteristics is referred to as fCH2, a relationship of fCL1<fd1<fCH1 is satisfied and a relationship of fCL2<fd2<fcH2 is satisfied.