Circuit device, oscillator, electronic apparatus, and vehicle

A circuit device comprising:

• a current generation circuit configured to generate a temperature compensation current based on a temperature detection voltage;
• and
• a current-voltage conversion circuit configured to perform current-voltage conversion on the temperature compensation current to output a temperature compensation voltage, wherein
• the current-voltage conversion circuit includes
• an operational amplifier having a first input node to which the temperature compensation current is input, and an output node configured to output the temperature compensation voltage, and
• a feedback circuit disposed between the first input node and the output node of the operational amplifier, and
• the operational amplifier includes
• a differential section having a current mirror circuit and differential pair transistors,
• an output section configured to output the temperature compensation voltage, and
• an RC low-pass filter configured to output a signal obtained by performing a low-pass filter process on an output signal of the differential section to an input node of the output section.