Integrated circuit thermometer

Details Integrated circuit thermometer Integrated circuit thermometer

1993-02-05

1995-02-07

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Measuring or testing

374170, 374102, 364557, 377 49, G01K 732

Patent

active

053881346

ABSTRACT:
An integrated circuit temperature detector (thermometer) uses a temperature dependent oscillator to count up to a fixed number and thereby generate a time interval indicative of the temperature (a temperature-to-time converter). The time-to-number converter provides a numeric temperature output. Counting oscillations of a relatively temperature independent oscillator for the time interval may digitize the temperature measurement. Calibration and successive approximation iterations permit simple hardware to achieve good accuracy.

REFERENCES:
patent: 4464067 (1984-08-01), Hanaoka
patent: 4505599 (1985-03-01), Nonaka
patent: 4551031 (1985-11-01), Ishikawa et al.
patent: 4602871 (1986-07-01), Hanaoka
patent: 4658407 (1987-04-01), Iwama
patent: 4771393 (1988-09-01), Ishida et al.
patent: 4782445 (1988-11-01), Pasquini

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