IF3S Capacitance Interface
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The IF3S is designed to perform 1MHz capacitance measurements
on 2, 3, and 4 leaded devices in conjunction with the 3600E tester.
It is designed to be mounted on or near a handler or prober; the
IF3S contains the relays necessary for connecting a capacitance
meter through relatively short leads to the various pins of the
DUT. The IF3S includes a capacitance meter, and an IF1 Standard
Interface. For non-capacitance test types these interface options
are effectively transparent. To achieve capacitance measurement
accuracy and repeatability, the system maintains an auto calibration
file on the open socket offsets for all capacitance test types and
for each range of the capacitance meter.
Another feature of the IF3 (with the exception of the IF3D two
leaded version) are four user programmable component plugs. These
allow external components to be connected between the various
leads of the DUT under control of the test program. The component
plugs can be programmed for use in non-capacitance test types
as well.
The IF3S also has the capability of programmable lead switching.
The lead switching feature, which is controlled by the test program,
provides the flexibility to switch both force and sense of the
tester's three Kelvined leads (source/emitter, drain/collector,
gate/base) for any combination at the IF3S output. This allows
the test leads to be connected to the DUT for any possible device
pin-out configuration, offering the advantage of using one test
fixture per package style regardless of the device pin-out.
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