Datasheet PS320CPA, PS320CSA, PS320CUSX, PS320EPA, PS320ESA Datasheet (PERICOM)

1

PS8183D 01/11/01

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2

PS320/PS321/PS322

Precision, Dual-Supply Analog Switches

Features

••

••

• Low On-Resistance (17W typ.) Minimizes Distortion and

Error Voltages

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

• Split-Supply Operation (±3V to ±8V)

• Improved Second Sources for MAX320/MAX321/MAX322

• On-Resistance Matching Between Channels, 0.2Ω typ.

• On-Resistance Flatness, <2Ω typ.

• Low Off-Channel Leakage, <5nA @ +85°C

• TTL/CMOS Logic Compatible

• Fast Switching Speed, tON <150ns

• Guaranteed Break-Before-Make action (PS322) eliminates

momentary crosstalk

• Rail-to-Rail Analog Signal Dynamic Range

• Low Power Consumption, <1.25mW

• MSOP Package Minimizes Board Area

Applications

• Audio Switching and Routing

• Portable Instruments

• Data Acquisition Systems

•· Sample-and-Holds

• Telecommunication Systems

• Battery-Powered Systems

Switches shown for logic “0” input

Top View

Functional Diagrams, Pin Configurations, and Truth Tables

Top View

Top View

Description

The PS320/PS321/PS322 are improved high-precision, medium volt­age analog switches designed to operate with +3V to +8V power
supplies. The PS320 is a dual, single-pole single-throw (SPST),
normally open (NO) switch. The PS321 has the same pinout as the
PS320 but it has two normally closed (NC) switches. The PS322 has
one normally open (NO) and one normally closed (NC) switch per
package. When on, each switch conducts current equally well in
either direction. In the off state, each switch blocks voltages up to
the power-supply rails.

With ±5V power supplies, the PS320/PS321/PS322 guarantee
<35Ω ON-resistance. ON-resistance matching between channels is
within 2Ω. ON-resistance flatness is less than 4Ω over the specified
range. All three devices guarantee low leakage currents (<100pA
@25°C, <10nA @+85°C) and fast switching speeds (t

ON

<150ns). Break-before-make switching action protects against
momentary crosstalk (PS322).

For single-supply operation the PS323/PS324/PS325 are recom­mended.

6

7

8

5

1
2
3
4

NC1

COM1

IN2

V-

V+

COM2
NC2

IN1

PS321

6

7

8

5

1
2
3
4

N01

COM1

IN2

V-

V+

COM2
NC2

IN1

PS322

6

7

8

5

1
2
3
4

NO1

COM1

IN2

V-

V+

COM2
NO2

IN1

PS320

023SP

cigoLhctiwS

0

1

FFO

NO

123SP

cigoLhctiwS

0

1

NO

FFO

223SP

cigoL

hctiwS

1

hctiwS

2

0
1

FFO

NO

NO

FFO

PS320/PS321/PS322

Precision, Dual-Supply Analog Switches

2

PS8183D 01/11/01

Caution:

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied.

Electrical Specifications - Dual Supplies (V± = ± 5V ±10%, V

INH

= 3.5V, V

INL

= 1V)

retemaraPlobmySsnoitidnoC)C°(.pmeT.niM

(2)

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)2(

stinU

hctiwSgolanA

egnaRlangiSgolanA

)3(

V

GOLANA

lluF–V+VV

ecnatsiseR-NO

R

NO

,V5.4–=–V,V5.4=+V

V

ON

Vro

CN

V5.3±=

I

MOC

,Am1=

526153

Ω

lluF54

hctaMecnatsiseR-NO

slennahCneewteB

)4(

∆R

NO

V5–=–V,V5=+V

V

ON

Vro

CN

,V3±=

I

MOC

=,Am1

523.02

lluF4

ssentalFecnatsiseR-NO

)5(

R

TALF)NO(

,V5–=–V,V5=+V

I

MOC

,Am1=

V

ON

Vro

CN

V3±=

5214

lluF6

egakaeLffOCNroON

tnerruC

)6(

I

)FFO(ON

ro

I

)FFO(CN

,V5.5–=–V,V5.5=+V

V

MOC

,V5.4±=

V

ON

Vro

CN

V5.4±=

521.0–10.0–1.0

An

lluF5–5

egakaeLffOMOC

tnerruC

)6(

I

)FFO(MOC

–V,V5.5=+VV5.5–=

V

MOC

,V5.4±=

V

ON

Vro

CN

V5.4±=

521.0–10.0–1.0

lluF5–5

egakaeLnOMOC

tnerruC

)6(

I

)NO(MOC

,V5.5–=–V,V5.5=+V

V

MOC

V5.4±=

V

ON

Vro

CN

V5.4±=

522.0–40.0–2.0

lluF01–01

Continuous Power Dissipation

Plastic DIP (derate 6mW/ ºC above +70ºC)....................500mW

Narrow SO (derate 6mW/ ºC above +70ºC) .................... 450mW

MSOP (derate 4mW/ ºC above +70ºC) ...........................330mW

Storage Temperature........................................ -65ºC to +150ºC

Lead Temperature (soldering, 10s) ................................ +300ºC

Voltages Referenced to V–

V+ ......................................................................-0.3V to +17V

VIN, V

COM

, VNC, V

NO

(1)

.............................(V-) -2V to (V+) +2V

...............................................or 30mA, whichever occurs first

Current (any terminal) .....................................................30mA

Peak Current, COM, NO, NC

(pulsed at 1ms, 10% duty cycle) ...................................100mA

ESD per Method 3015.7............................................. > 2000V

Absolute Maximum Ratings

Note 1:

Signals on NC, NO, COM, or IN exceeding V+ or V- are clamped
by internal diodes. Limit forward diode current to maximum current
rating

Thermal Information

continued next page

PS320/PS321/PS322

Precision, Dual-Supply Analog Switches

3

PS8183D 01/11/01

Notes:

1. The algebraic convention, where the most negative value is a minimum and the most positive is a maximum, is used in this data sheet.

2. Typical values are for DESIGN AID ONLY, not guaranteed or subject to production testing.

3. Guaranteed by design

4. ∆R

ΟΝ = ∆RΟΝ

max. –∆R

ΟΝ

min.

5. Flatness is defined as the difference between the maximum and minimum value of on-resistance measured.

6. Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at +25ºC.

7. Off Isolation = 20log

10

[ V

COM

/ (V

NC

or VNO) ].

retemaraPlobmySsnoitidnoC.pmeT )C°( .niM

)1(

.pyT

)2(

.xaM

)1(

stinU

tupnIcigoL

htiwtnerruCtupnI

hgiHegatloVtupnI

I

HNI

V

NI

V0=srehtolla,V5.3=

lluF

5.0–500.05.0
Am

htiwtnerruCtupnI

woLegatloVtupnI

I

LNI

V

NI

+V=srehtolla,V0=5.0–500.05.0

tupnIhgiHcigoL

egatloV

V

HNI

+V–=–V,%01±V5=+V5.3

V

+V–=–V,V8<+V<V3+V6.0

tupnIwoLcigoL

egatloV

V

LNI

+V–=–V,%01±V5=+V1

+V–=–V,V8<+V<V3+V3.0

cimanyD

emiTnO-nruTt

NO

V

MOC

,V3±=

2erugiF

5256051

sn

lluF571

emiTffO-nruTt

FFO

5253001

lluF051

ekaM-erofeB-kaerB

yaleDemiT

)3(

t

D

3SP22lnoy,RL=030Ω,CL=3 3erugiF,Fp5

52

25

noitcejnIegrahC

)3(

QCL,Fn1=V

NEG

R,V0=

NEG

0= Ω,4erugiF821Cp

noitalosIffO

)7(

O

RRI

RL=50Ω C,

L

=f,Fp5=zHM1, erugiF5 27–

Bd

klatssorCX

KLAT

R

L

05= Ω C,

L

=f,Fp5=zHM1, 6erugiF58–

ffOONroCN

ecnaticapaC

C

)FFO(

zHM1=f,7erugiF9

FpffOMOC

ecnaticapaC

C

)FFO(MOC

zHM1=f,7erugiF9

nOMOC

ecnaticapaC

C

)NO(MOC

zHM1=f,8erugiF22

ylppuS

egnaRylppuS-rewoP–V,+V7.2±8±V

ylppuSevitisoP

tnerruC

+I

V,V5.5–=-V,V5.5=+V

NI

,+VroV0=

fforonoslennahcllA

5208521

Am

lluF002

ylppuSevitageN

tnerruC

–I

52521–08–

lluF002–

Electrical Specifications - Dual Supplies (V± = ± 5V ±10%, V

INH

= 3.5V, V

INL

= 1V) continued

PS320/PS321/PS322

Precision, Dual-Supply Analog Switches

4

PS8183D 01/11/01

Test Circuits/Timing Diagrams

Figure 2. Switching Time

Figure 3. Break-Before-Make Interval (PS322 only)

Figure 4. Charge Injection

-5V

V-

+5V

NO

or NC

COM

V

COM = 3V

Logic

Input

IN

tr <20ns
tf <20ns

V

OUT

= V

COM

R

L

R

L + RON

()

CL INCLUDES FIXTURE AND STRAY CAPACITANCE

V

OUT

R

L

300Ω

C

L

35pF

LOGIC INPUT WAVEFORMS INVERTED FOR
SWITCHES THAT HAVE OPPOSITE LOGIC

t

OFF

t

ON

V

OUT

90%

Logic

Input

Switch

Output

+5V

0V

0V

50%

90%

V+

NO1

NC2

-5V

V-

V

COM1
COM2

+3V

IN

+5V

+5V

0V

50%

90%

90%

90%

50%

Logic

Input

Logic

Input

C

L

C

L

R

L

35

0V

t

V

OUT2

V

OUT1

OUT2

300

INCLUDES FIXTURE AND STRAY CAPACITANCE.

D

t

D

pF

V

C

L

R

L

35

OUT1

300

pF

V+

+5V

NO or

NC

-5V

COM

R

GEN

V

OUT

C

L

1nF

V

OUT

∆V

OUT

IN

V

GEN

ON

ON

OFF

OFF

OFF

OFF

IN

Q = (∆V

OUT

)(CL)

IN

Logic
Input

IN POLARITY DEPENDS ON NO OR NC SWITCH FUNCTION

PS320/PS321/PS322

Precision, Dual-Supply Analog Switches

5

PS8183D 01/11/01

Test Circuits/Timing Diagrams (continued)

Figure 5. Off Isolation

Figure 7. Channel-Off Capacitance

Figure 6. Crosstalk

Figure 8. Channel-On Capacitance

V+

+5V

NC

Capacitance

Meter

-5V

10nF

or NO

COM

10nF

IN

V

f = 1kHz

IN

V+

+5V

NC

Analyzer

V-

-5V

or NO

10nF

COM

10nF

0dBm

IN

V

COM

IN

R

L

V+

+5V

Analyzer

N02

COM1

10nF

IN2

R

L

COM

Signal
Generator 0dBm

V

COM2

IN1

N01

NC

50Ω

50

IN

V

IN

-5V

10nF

V+

+5V

NC

-5V

Capacitance

Meter

GND

or NO

COM

10nF

IN

V

f = 1kHz

IN

Ordering Information

Ω

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax [phone] • http://www.pericom.com

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