11

PS8168E

09/16/02

PS391/PS392/PS393

Precision, Quad, SPST Analog Switches

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TestCircuits/TimingDiagrams(continued)

Figure 4. Off Isolation

Figure 6. Channel-Off Capacitance

Figure 5. Crosstalk

Figure 7. Channel-On Capacitance

V+

+5V

NC

Capacitance

Meter

GND

-5V

V-

or NO

COM

10nF

IN

0V or

2.4V

10nF

f = 1kHz

V+

+5V

NC

Analyzer

GND

-5V

V-

or NO

COM

10nF

IN

0V or

2.4V

10nF

COM

Signal

Generator 0dBm

V+

+5V

Analyzer

GND

-5V

V-

N02

COM1

10nF

IN2

10nF

COM

Signal

Generator 0dBm

0V or

2.4V

COM2

IN1

N01

NC

50

Ω

0V or

2.4V

V+

+5V

NC

Capacitance

Meter

GND

EN

or NO

COM

10nF

IN

0V or

2.4V

f = 1kHz

As illustrated in Figure 8, PS391 can be used to insert various

capacitors (C1, C2) and set proper RC times for integration. The

the RC time. The reset switch discharges the hold capacitor

Figure8. ProgrammableIntegratorandSample/Hold

Applications