US 11,860,183 B2
Temperature dependent acceleration current source circuitry
Carsten Ingo Stoerk, Freising (DE); Johann Erich Bayer, Freising (DE); and Ruediger Ganz, Freising (DE)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Aug. 17, 2021, as Appl. No. 17/404,225.
Prior Publication US 2023/0055100 A1, Feb. 23, 2023
Int. Cl. G01K 3/10 (2006.01); G01P 1/00 (2006.01); G05F 3/30 (2006.01)
CPC G01P 1/006 (2013.01) [G01K 3/10 (2013.01); G05F 3/30 (2013.01)] 25 Claims
OG exemplary drawing
 
1. Temperature based acceleration current source circuitry, comprising:
differential trigger circuitry, comprising:
a diode device biased by a first leakage current 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 in response 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 in response 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 activates the acceleration current source responsive to a difference between the first leakage current and the second leakage current.