Heater controller having improved start-up for thermal sensor

Details Heater controller having improved start-up for thermal sensor Heater controller having improved start-up for thermal sensor

2007-12-11

2010-12-28

Kwok, Helen C. (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

C073S514050

Reexamination Certificate

active

07856879

ABSTRACT:
A closed-loop heater control circuit for use with integrated circuit thermal sensing devices, such as thermal accelerometers, is disclosed. The heater control circuit includes a switched-capacitor integrating circuit and a controller or modulator. The switched-capacitor integrating unit integrates a common-mode voltage signal from an instrument amplifier with respect to an analog common reference voltage. In operation, the switched-capacitor integrating unit is adapted so that the closed-loop is opened briefly at the beginning of every new cycle, e.g., using an enable signal, during fast start-up or power-down.

REFERENCES:
patent: 6182509 (2001-02-01), Leung
patent: 6589433 (2003-07-01), Leung
patent: 6795752 (2004-09-01), Zhao et al.
patent: 7069785 (2006-07-01), Chou
patent: 7305881 (2007-12-01), Zhao et al.
patent: 7426862 (2008-09-01), Dido et al.
patent: 7461535 (2008-12-01), Huang et al.

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