Patent ID: 8864377

Claim:
A temperature sensor circuit comprising: a first junction that produces a first voltage on a first node that is sensitive to temperature; a scaling resistor coupled between the first node and a first sense node; a first current source for sourcing a first current to the first sense node in response to a bias voltage; a second junction that produces a second voltage on a second node that is sensitive to temperature; a second current source for sourcing a second current to the second node in response to the bias voltage; an error amplifier that compares the first sense node to the second node to generate the bias voltage; a third current source for sourcing a third current in response to the bias voltage; a first current sink that sinks the third current to generate a second bias voltage that adjusts the first current sink to sink the third current; a second current sink that receives the second bias voltage and generates a sink current that is sunk from a multiplier node; a multiplier resistor coupled between multiplier node and an output; and an amplifier having the multiplier node as a first input and a receiving a reference voltage as a second input, the amplifier driving the output in response to a voltage difference between the reference voltage and a voltage on the multiplier node.