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PS8188C

10/24/02

Features

• LowOn-Resistance(33-Ohmtyp.)MinimizesDistortion

and Error Voltages

• Low Glitching Reduces Step Errors in Sample-and-Holds.

Charge Injection, 2pC typ.

• Single-SupplyOperation(+2.5Vto+16V)

•· Improved Second Sources for MAX323/MAX324/MAX325

• On-Resistance Matching Between Channels, <2-Ohm

• On-ResistanceFlatness,<6-Ohmmax.

• LowOff-ChannelLeakage,<5nA@+85oC

• TTL/CMOSLogicCompatible

• Fast Switching Speed, tON <150ns

• GuaranteedBreak-Before-Makeaction(PS325only)

eliminates momentary crosstalk

v Rail-to-Rail Analog Signal Dynamic Range

• Low Power Consumption, <5mW

• MSOP Package Minimizes Board Area

Applications

• Audio Switching and Routing

• Portable Instruments

• Data Acquisition Systems

• Sample-and-Holds

• Telecommunication Systems

• Battery-Powered Systems

Description

The PS323/PS324/PS325 are improved high-precision, medium-

voltage analog switches designed to operate with single power

supplies. The PS323 is a dual, single-pole single-throw (SPST),

normally open (NO) switch. The PS324 has the same pinout as the

PS323 but it has two normally closed (NC) switches. The PS325 has

one normally open (NO) and one normally closed (NC) switch per

package. Each switch conducts current equally well in either

direction when on. In the off state, each switch blocks voltages up

to the power-supply rail.

With a +5V power supply, PS323/PS324/PS325 guarantee <60-ohm

ON-resistance. ON-resistance matching between channels is within

2W. ON-resistance flatness is less than 6W over the specified

range. All three devices guarantee low leakage currents (<100 pA

@ 25oC, <10nA @ +85oC) and fast switching speeds (tON<150ns).

Break-before-make switching action protects against momentary

crosstalk (PS325).

For single-supply operation below 5V, PI5A317/318/319 are also

recommended.

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O

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Switches shown for logic “0” input

TopView

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PS323/PS324/PS325

Precision, Single-Supply

SPST Analog Switches

FunctionalDiagrams,PinConfigurations,andTruthTables

TopView

TopView

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NC1

COM1

IN2

GND

V+

COM2

NC2

IN1

PS324

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NC1

COM1

IN2

GND

V+

COM2

NC2

IN1

PS325

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1

2

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NO1

COM1

IN2

GND

V+

COM2

NO2

IN1

PS323

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N

O

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O

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S1

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F

F

O

N

O

N

O

F

F

O