IF4S Capacitance Interface for Dual Device Testing
The IF4S is designed to perform 1MHz capacitance measurements
on dual segment devices in conjunction with the 3600E tester.
Designed to be mounted on or near a handler or prober, the IF4S
contains the relays necessary for connecting a capacitance meter
through relatively short leads to the various pins of the DUT.
Each capacitance interface option 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
The IF4S includes 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 IF4S 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. To support testing of dual segment
devices, the output lead configuration may be defined for both
segments of the device.
Another feature of the IF4S is user programmable component plugs,
which 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