Temperature sensing apparatus

Details Temperature sensing apparatus Temperature sensing apparatus

1996-11-01

1998-07-14

Grimm, Siegfried H.

Oscillators

Frequency stabilization

Temperature or current responsive means in circuit

327513, 374178, G01K 701, H03L 102

Patent

active

057810753

ABSTRACT:
A temperature sensing apparatus (200), includes a temperature sensor (220), a current source (203), and a temperature independent voltage source (240, 250). The current source (203) provides a biasing current to the temperature sensor (220), and the voltage source (240, 250) is programmable to adjust the output of the temperature sensor (220). Preferably, the voltage source (240, 250) includes a variable current source (240) and a resistive element (250) with counterbalanced temperature coefficients, and the bias current source (203) is selected to have a counterbalancing temperature coefficient to that of the resistive element (250).

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patent: 5351013 (1994-09-01), Alidio et al.
patent: 5389813 (1995-02-01), Schwob
patent: 5419637 (1995-05-01), Frye et al.

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