Curve Tracer Signal Conversion for Integrated Circuit Testing
AssigneeApplied Micro Circuits Corporation
InventorJoseph Martin Patterson
Life of this patent
Estimating the term…
Abstract
A curve tracer signal conversion device is provided. The signal conversion device has an input connected to the curve tracer base port to accept a repeating sequence of stepped base signals. The conversion device has a signal input connected to either the curve tracer collector or emitter port, typically the collector. The conversion device has a plurality of signal outputs, where each signal output is sequentially connected to the selected (i.e. collector) curve tracer port in response to a corresponding base step signal. The signals outputs may be provided to a test fixture, for testing a multi-pin integrated circuit (IC).
Claims21
A curve tracer signal conversion device, the signal conversion device comprising:
- an input connected to a curve tracer base (B) port to accept a repeating sequence of stepped base signals, a signal input connected to a curve tracer port selected from a group consisting of the collector and emitter ports, and a plurality of signal outputs, where each signal output is sequentially connected to the selected curve tracer port in response to a corresponding base step signal.
A universal socketless integrated circuit (IC) electrical test fixture, the test fixture comprising:
- a probing platform to accept an IC, the IC having electrical contacts formed on a bottom surface in an array of m rows, where each row includes n, or less contacts;
- a probe arm including p probe pins, where p is greater than, or equal to n;
- a clamping mechanism to mechanically interface the probe arm probe pins to a row of n IC contacts under test;
- a curve tracer with base, collector, and emitter ports;
- a curve tracer signal conversion device having an input connected to the curve tracer base port to accept a repeating sequence of stepped base signals, a signal input connected to a curve tracer port selected from a group consisting of the collector and emitter ports, and p signal outputs, where each signal output is connected to a corresponding probe pin;
- wherein the probe arm, clamping mechanism, and probe platform work in cooperation to electrically interface to any row of the IC contacts;
- and,
- wherein the probe pins are sequentially connected to the selected curve tracer port in response to a corresponding base step signal.
A curve tracer signal conversion system, the system comprising:
- a curve tracer having a base port, collector port, and emitter port;
- a curve tracer signal conversion device including an input connected to the curve tracer base port to accept a repeating sequence of stepped base signals, a signal input connected to a curve tracer port selected from a group consisting of the collector and emitter ports, and a plurality of signal outputs, where the signal outputs are sequentially connected to the selected curve tracer port in response to a corresponding base step signal.
Dependencies are inferred from the claim text.