Patent ID: 11860183
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. The watchdog circuit of claim 7, wherein the temperature based acceleration current source circuitry including:
differential trigger circuitry, comprising:
a diode device biased by a first leakage current and configured to provide a bias voltage; and
a trigger device biased by the bias voltage;

a first temperature sensitive device coupled between the diode device and a common terminal, wherein the first leakage current flows through the first temperature sensitive device, and the first leakage current varies responsive to temperature changes at a first rate;
a second temperature sensitive device coupled between the trigger device and the common terminal, wherein a second leakage current flows through the second temperature sensitive device, and the second leakage current varies responsive to temperature changes at a second rate; and
an acceleration current source coupled to the trigger device, wherein the acceleration current source is configured to, in response to activation by the trigger device, conduct an acceleration current provided by a voltage source to an output of the temperature based acceleration current source circuitry,
wherein the trigger device selectively activates the acceleration current source responsive to a difference between the first leakage current and a second leakage current.