Patent ID: 11927644
Assignee: AMS AG
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An apparatus, comprising:
a diode array;
a diode array test circuit electrically coupled to the diode array and operable to perform circuit failure detection during a test mode when a test input voltage is applied, the diode array test circuit comprising:
an input resistor operable to traverse a test current from the diode array, the diode array electrically coupled to a bottom end of the input resistor;
an input voltage node, wherein a top end of the input resistor is electrically coupled to the input voltage node;
a buffered amplifier circuit comprising:
an amplifier comprising:
an inverting input electrically coupled to a first input of the buffered amplifier circuit and the input voltage node; and
a noninverting input electrically coupled to the test input voltage; and

a plurality of amplifier circuit switches, wherein at least one amplifier circuit switch is electrically coupled to an output of the amplifier, wherein at least one amplifier circuit switch is electrically coupled to an output of the buffered amplifier circuit; and

a current detector electrically coupled to the output of the buffered amplifier circuit and operable to determine, during the test mode, a current measurement of the diode array.