AATIAN76 Datasheet, PDF(6/8 Page) SiGe Semiconductor, Inc. – Dual Slew Rate Controlled Load Switch

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AATIAN76 Datasheet, PDF (6/8 Pages) SiGe Semiconductor, Inc. – Dual Slew Rate Controlled Load Switch

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EV-140

AAT4282A EVAL:

Dual Slew Rate Controlled Load Switch

Test: Output Pull Down Impedance at Shutdown as Shown in Figure 3.

1. Remove JP1 jumper, set INA to 5V, set ENA and ENB to 0V to disable both channels.

2. Connect Keithley V/I source between OUTA and GND, set the voltage pulse to 1V with 5ms pulse width,

the compliance set to 100mA (the two sensing output wires need to connect as close as possible to the

OUTA and GND pins.)

3. Determine the output pull down impedance of channel A by taking the ratio of OUTA voltage and the sink-

ing current 100mA,

RDS(ON) =

VDS

IDS

4. Repeat the above steps for channel B output pull down impedance.

Figure 5: AAT4282A Evaluation Board Connection Diagram for Output Impedance Test.

EV-140.2007.08.1.0

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