PS323 Datasheet, PDF (1/10 Pages) Pericom Semiconductor Corporation – Precision, Single-Supply SPST Analog Switches

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SPST Analog Switches
Features
• Low On-Resistance (33-Ohm typ.) Minimizes Distortion
and Error Voltages
• Low Glitching Reduces Step Errors in Sample-and-Holds.
Charge Injection, 2pC typ.
• Single-Supply Operation (+2.5V to +16V)
•· Improved Second Sources for MAX323/MAX324/MAX325
• On-Resistance Matching Between Channels, <2-Ohm
• On-Resistance Flatness, <6-Ohm max.
• Low Off-Channel Leakage, <5nA @ +85oC
• TTL/CMOS Logic Compatible
• Fast Switching Speed, tON <150ns
• Guaranteed Break-Before-Make action (PS325 only)
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.
Functional Diagrams, Pin Configurations, and Truth Tables
NO1 1
COM1 2
IN2 3
GND 4
PS323
Top View
8 V+
7 IN1
6 COM2
5 NO2
NC1 1
COM1 2
IN2 3
GND 4
PS324
Top View
8 V+
7 IN1
6 COM2
5 NC2
NC1 1
COM1 2
IN2 3
GND 4
PS325
Top View
8 V+
7 IN1
6 COM2
5 NC2
Switches shown for logic “0” input
PS323
Logic
Switch
0
OFF
1
ON
PS324
Logic
Switch
0
ON
1
OFF
Logic
0
1
PS325
Switch 1
OFF
ON
Switch 2
ON
OFF
1
PS8188C 10/24/02