Pressure sensor
First Claim
1. A pressure sensor including an element portion for detecting pressure and a circuit portion having a signal processing function. both of which are integrally accommodated in the same package, said circuit portion comprising:
- a first section for performing analog processing of a detection signal from said element portion;
a second section for storing bit data for characteristic adjustment and compensation and performing characteristic adjustment and compensation of the detection signal from said element portion based on said bit data;
an interface section optimized to interface with external wiring;
an A/D conversion section for digitally encoding the analog processed detection signal; and
a digital processing section for converting the digitized signal into a desired serial signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A pressure sensor is provided which is tolerant to noise such as electromagnetic waves, is configured so as to be capable of easily selecting a system environment in which a sensor signal, commonly used for various kinds of systems, can be freely read in at timing as required by a system, and is able to realize reduction in size and cost suitable for automotive use. An element portion for detecting pressure and a circuit portion having a signal processing function are integrally accommodated in the same package. An interface section 24 optimized to interface with external wiring, an A/D conversion section 25 for digitally encoding an analog processed detection signal of the sensor, and a digital processing section 26 for converting the digitized signal into a desired serial signal are added to the circuit portion 2. The entire circuit portion is constituted by at most two ICs alone, and a selection can be made between two output forms including an analog processed detection signal and a digital processed detection signal.
2 Citations
12 Claims
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1. A pressure sensor including an element portion for detecting pressure and a circuit portion having a signal processing function. both of which are integrally accommodated in the same package,
said circuit portion comprising: -
a first section for performing analog processing of a detection signal from said element portion;
a second section for storing bit data for characteristic adjustment and compensation and performing characteristic adjustment and compensation of the detection signal from said element portion based on said bit data;
an interface section optimized to interface with external wiring;
an A/D conversion section for digitally encoding the analog processed detection signal; and
a digital processing section for converting the digitized signal into a desired serial signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification