Temperature coefficient factor circuit, semiconductor device, and radar device

A temperature coefficient factor circuit comprising:

• a first current source configured to provide a first current that varies with a temperature according to a positive temperature coefficient factor, wherein the positive temperature coefficient factor has a positive value;
• a second current source configured to provide a second current that varies with the temperature according to a negative temperature coefficient factor, wherein the negative temperature coefficient factor has having a negative value;
• a common terminal;
• a first programmable amplifying current mirror, coupled to the common terminal, and configured to conduct a first amplified current to the common terminal, wherein
• a first input current is amplified by the first programmable amplifying current mirror according to a first amplification factor,
• the first input current is one of the first current or the second current, and
• the first programmable amplifying current mirror is configured to adapt the first amplification factor in dependence of a control signal;
• a second programmable amplifying current mirror, coupled to the common terminal, and configured to a second amplified current away from the common terminal, wherein
• a second input current is amplified by the second programmable amplifying current mirror according to a second amplification factor,
• the second input current is another one of the first current or the second current, and
• the second programmable amplifying current mirror is configured to adapt the second amplification factor in dependence of the control signal;
• a current output circuit, coupled to the common terminal, and configured to conduct a difference current away from the common terminal and to provide an output current that varies with a temperature according to the a required temperature coefficient factor, wherein the difference current is substantially equal to the first amplified current minus the second amplified current, and the output current is based on the difference current.