Semiconductor device with A/D converter

Details Semiconductor device with A/D converter Semiconductor device with A/D converter

2007-08-21

2007-08-21

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S119000

Reexamination Certificate

active

11248158

ABSTRACT:
A semiconductor device includes a reference voltage generating section configured to generate a first reference voltage and a second reference voltage based on a voltage supplied from an external power supply, and an AD (analog/digital) conversion circuit operating based on the first reference voltage to generate an AD conversion signal corresponding to an output signal supplied from an external device. The second reference voltage is supplied to the external device, and a ratio of the first reference voltage and the second reference voltage is kept to a constant value regardless of a temperature of the semiconductor device.

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Japanese Office Action dated Apr. 25, 2007 with a partial English translation.

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