Abstract:
An example test system includes: multiple channels, where each of the multiple channels is configured to force voltage and to source current; and circuitry to combine current sourced by the multiple channels to produce a combined current for output on a single channel to a device under test (DUT), where each of the multiple channels includes a load sharing resistor to control a contribution of the channel to the combined current.
Abstract:
Methods and apparatus to store fault data and/or status data associated with an integrated circuit (100) into a memristor system (106) are disclosed. An example method includes determining when a fault corresponding to an integrated circuit (100) has occurred, when first data related to the integrated circuit (100) is updated. An example method further includes storing the first data in a first subset of a plurality of resistive elements. An example method further includes, in response to the detection of the fault, storing second data in a second subset of the plurality of resistive elements, the second data corresponding to an error associated with the fault.
Abstract:
A circuit includes a plurality of transistors responsive to a plurality of latches that store a test code. The circuit further includes a first bit line coupled to a data cell and coupled to a sense amplifier. The circuit also includes a second bit line coupled to a reference cell and coupled to the sense amplifier. A current from a set of the plurality of transistors is applied to the data cell via the first bit line. The set of the plurality of transistors is determined based on the test code. The circuit also includes a test mode reference circuit coupled to the first bit line and to the second bit line.
Abstract:
An electronic circuit (300) to determine current-voltage characteristics of a plurality of electronic devices under test (305). The electronic circuit (300) is comprised of a plurality of individual test cells, each of the plurality of test cells is configured to electrically couple to a first terminal of one of the plurality of electronic devices under test (305) and to a first current source (311). A second terminal of each of the plurality of electronic devices under test (305) couples to a second current source (313). The circuit (300) employs a current-based measurement method.
Abstract:
An apparatus, suitable for coupling a pads of integrated circuits on wafer to the pogo pins of a pogo tower in a test system without the need of a probe card, includes a body having a first surface and a second surface, the body having a substantially circular central portion, and a plurality of bendable arms extending outwardly from the central portion, each bendable arm having a connector tab disposed at the distal end thereof; a first plurality of contact terminals disposed on the second surface of the central portion of the body, the first plurality of contact terminals arranged in pattern to match the layout of pads on a wafer to be contacted; at least one contact terminal disposed on the first surface of the plurality of connector tabs; and a plurality of electrically conductive pathways disposed in the body such that each of the first plurality of contact terminals is electrically connected to a corresponding one of the contact terminals on the first surface of the connector tabs.
Abstract:
An apparatus, suitable for coupling a pads of integrated circuits on wafer to the pogo pins of a pogo tower in a test system without the need of a probe card, includes a body having a first surface and a second surface, the body having a substantially circular central portion, and a plurality of bendable arms extending outwardly from the central portion, each bendable arm having a connector tab disposed at the distal end thereof; a first plurality of contact terminals disposed on the second surface of the central portion of the body, the first plurality of contact terminals arranged in pattern to match the layout of pads on a wafer to be contacted; at least one contact terminal disposed on the first surface of the plurality of connector tabs; and a plurality of electrically conductive pathways disposed in the body such that each of the first plurality of contact terminals is electrically connected to a corresponding one of the contact terminals on the first surface of the connector tabs.
Abstract:
An electronic component handling device, wherein a first spring (54) is installed between a support member (51) and a heat block (53) driven in Z-axis direction to energize the support member (51) and the heat block (53) in a direction apart from each other, and a second spring (57) is installed between a first pusher (55) pressing the die (81) of an IC device (8) and a second pusher (56) pressing the substrate (82) of the IC device (8) to energize the first pusher (55) and the second pusher (56) in a direction apart from each other, whereby the device can cope with a change in type of electronic components, can improve a surface copying, and can uniformly press the electronic components with an accurate load.
Abstract:
A subassembly to aid in changing the interface unit for an automatic test system. The disclosed embodiment shows an automatic test system with a handler and a tester. The interface unit is a device interface board (DIB). The subassembly allows the DIB to be easily accessed, yet can be properly aligned to the test system. No special tools are required to change the DIB.