Automatic test equipment with active load having high-speed inhi

Details Automatic test equipment with active load having high-speed inhi Automatic test equipment with active load having high-speed inhi

1989-12-01

1991-04-23

Wieder, Kenneth

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324731, G01R 1900

Patent

active

050102974

ABSTRACT:
Automatic test equipment (ATE) for post-production testing of multi-pin integrated circuits (ICs). Each pin is assigned to a pin card having a pin driver and an active load with the latter including both a current source and a current sink. The pin driver and active load are connectable alternatively to the IC pin in response to complementary inhibit signals. Within the active load, the source and sink and connected/disconnected by respective pairs of matched transistor switch circuits the individual switches of which are alternatively activatable by differential control means. Both switch circuits of each pair are supplied from a single current source. One switch circuit of each pair, when activated, directs the current from the single current source to (from) the IC pin, while the other switch circuit, when activated, directs the current to (from) a return line. All of the switch circuits include Darligton-connected transistors and an additional transistor to draw base charge from the principal Darlington transistor when the switch is turned off.

REFERENCES:
patent: 4348759 (1982-09-01), Schnurmann
patent: 4495462 (1985-01-01), Weldon
patent: 4636716 (1987-01-01), Welzhofer
patent: 4646299 (1987-02-01), Schinabeck et al.
patent: 4651088 (1987-03-01), Sawada
patent: 4712058 (1987-12-01), Branson et al.
patent: 4720671 (1988-01-01), Tada et al.

Affiliated with

Also associated with

Rating

Automatic test equipment with active load having high-speed inhi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic test equipment with active load having high-speed inhi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic test equipment with active load having high-speed inhi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1623382