Patent ID: 11927480
Assignee: SHANGHAI LINGFANG TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 0:
1. A reference voltage circuit for providing a reference voltage in a lidar system, the reference voltage circuit comprising:
a bandgap reference circuit configured to generate intermediate reference voltages, the bandgap reference circuit comprising a plurality of bipolar junction transistors (BJTs) for providing a current proportional to absolute temperature;
a temperature coefficient adjustment circuit coupled to the bandgap reference unit, the temperature coefficient adjustment circuit being configured generate a first intermediate reference voltage based at least on an operating temperature value;
a voltage adjustment circuit coupled to the bandgap reference unit, the voltage adjustment circuit being configured generate a second intermediate reference voltage based at least on a reference temperature value; and
a voltage superimposing circuit configured to generate a third intermediate reference voltage using at least the first intermediate reference voltage and the second intermediate reference voltage.