Apparatus and method for performing a four-point voltage measurement for an integrated circuit
First Claim
1. A test apparatus for measuring a signal generated on an integrated circuit by a source during a testing mode, wherein the signal is supplied to first and second bond pads of the integrated circuit, and wherein during an operational mode an operational component is connected to the first and second bond pads, the test apparatus comprising:
- first and second conductive elements for connecting the first and the second bond pads to a resistive element having a value related to a value of the operational component;
a measuring device; and
third and fourth conductive elements for connecting the measuring device to third and fourth bond pads of the integrated circuit responsive to the source through first and second switching elements.
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Accused Products
Abstract
A method and apparatus for determining a voltage, such as a bias voltage, supplied by an integrated circuit. A nominal terminating resistor is connected across a first and a second input/output pads from which the voltage is supplied. The voltage is measured across third and fourth pads connected, respectively, to the first and second pads. In an alternative embodiment the functionality of the third and the fourth pads is multiplexed between chip operational circuitry unrelated to the voltage to be measured and a connection to the first and second pads for measuring the voltage.
10 Citations
19 Claims
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1. A test apparatus for measuring a signal generated on an integrated circuit by a source during a testing mode, wherein the signal is supplied to first and second bond pads of the integrated circuit, and wherein during an operational mode an operational component is connected to the first and second bond pads, the test apparatus comprising:
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first and second conductive elements for connecting the first and the second bond pads to a resistive element having a value related to a value of the operational component; a measuring device; and third and fourth conductive elements for connecting the measuring device to third and fourth bond pads of the integrated circuit responsive to the source through first and second switching elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for measuring a signal generated by a source disposed on an integrated circuit during a test, wherein the signal is supplied to first and second bond pads of the integrated circuit, and wherein during an operating mode an operational component is connected across the first and second bond pads, the method comprising:
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connecting a resistive element having a value related to a value of the operational component across the first and the second bond pads; and connecting a measuring device to third and fourth bond pads of the integrated circuit responsive to the source through first and second switching elements to determine a measured signal. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification