Loadboard enhancements for automated test equipment
View Patent ↗An enhanced loadboard and method for enhanced automated test equipment (ATE) signaling. More specifically, embodiments provide an effective mechanism for reducing signal degradation and error interjection by replacing one or more relays with signal splitters for directing signals between one or more pins of a coupled ATE instrument, where the signal splitters reduce loadboard size and operating cost.
1. A component for conducting an automated test equipment (ATE) signal comprising:
a first element;
a second element coupled to said first element;
a third element coupled to said first element; and
a signal splitter coupled between said first, second and third elements, wherein said signal splitter is operable to conduct said signal from said first element to at least one of said second and third elements, and wherein said signal splitter comprises:
a first resistive element coupled to said first element;
a second resistive element coupled to said second element;
a third resistive element coupled to said third element; and
wherein said first, second and third resistive elements share a common node.
2. The component of claim 1 , wherein said first, second and third resistive elements comprise a plurality of resistors.
3. The component of claim 1 , wherein said first, second and third resistive elements comprise a plurality of transistors.
4. The component of claim 1 , wherein said signal splitter is symmetrical, and wherein said first, second and third resistive elements comprise substantially equal resistance values.
5. The component of claim 4 , wherein said substantially equal resistance values are a function of a predetermined impedance of said signal splitter and a number of times said signal is split.
6. The component of claim 1 , wherein at least one of said first, second and third elements couple to a functional pin of an ATE instrument.
7. The component of claim 1 further comprising:
a signal processing component coupled to said signal splitter and operable to process said signal conducted through said signal splitter.
8. The component of claim 1 further comprising:
a plurality of relays coupled to said signal splitter and operable to conduct said signal from said first element to at least one of said second and third elements.
9. A loadboard for use with automated test equipment (ATE) comprising:
a plurality of elements for coupling to functional pins of an ATE instrument;
a plurality of relays coupled to said plurality of elements; and
a plurality of signal splitters coupled to said plurality of relays, wherein said signal splitters are operable to conduct ATE signals between said plurality of elements, and wherein said signal splitter comprises:
a first resistive element;
a second resistive element coupled to said first resistive element;
a third resistive element coupled to said second resistive element; and
wherein said first, second and third resistive elements share a common node.
10. The loadboard of claim 9 , wherein said first, second and third resistive elements comprise a plurality of resistors.
11. The loadboard of claim 9 , wherein said first, second and third resistive elements comprise a plurality of transistors.
12. The loadboard of claim 9 , wherein said signal splitter is substantially symmetrical, and wherein said first, second and third resistive elements have substantially equal resistance values.
13. The loadboard of claim 12 , wherein said substantially equal resistance values are a function of a predetermined impedance of said signal splitter and a number of times said a signal is split.
14. The loadboard of claim 9 further comprising:
a signal processing component coupled to said plurality of signal splitters and operable to process signals conducted through said signal splitter.
15. The loadboard of claim 9 , wherein a total number of relays of said loadboard is two less than a number of said plurality of elements.
16. A method for automated test equipment (ATE) signaling, said method comprising:
transmitting a first signal from a first element of an ATE loadboard to a first resistive element of a signal splitter;
splitting said first signal into a second and third signal using a second and third resistive element of said signal splitter;
receiving one of said second and third signals using a second element of said ATE loadboard.
17. The method of claim 16 , wherein said first, second and third resistive elements share a common node.
18. The method of claim 16 , wherein said first, second and third resistive elements comprise a plurality of resistors.
19. The method of claim 16 , wherein said first, second and third resistive elements comprise a plurality of transistors.
20. The method of claim 16 , wherein said signal splitter is substantially symmetrical, and wherein said first, second and third resistive elements have substantially equal resistance values.
21. The method of claim 20 , wherein said substantially equal resistance values are a function of a desired impedance of said signal splitter and a number of times said a signal is split.
22. The method of claim 16 , wherein said second element is a second signal splitter of said ATE loadboard.
23. The method of claim 16 , wherein said second element is a relay of said ATE loadboard.
24. The method of claim 16 , wherein said second element is a pin electronics component associated with a functional pin of an ATE instrument coupled with said ATE loadboard.