Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - analogue switches SOIC 8 N

_______________General Description

The MAX320/MAX321/MAX322 are precision, dual,

SPST analog switches designed to operate from ±3V to

±8V dual supplies. The MAX320 has two normally open

(NO) switches and the MAX321 has two normally

closed (NC) switches. The MAX322 has one NO and

one NC switch. Low power consumption (1.25mW)

makes these parts ideal for battery-powered equip-

ment. They offer low leakage currents (100pA max) and

fast switching speeds (t

= 150ns max, t

OFF

= 100ns

max).

The MAX320 series, powered from ±5V supplies, offers

35Ω max on-resistance (R

), 2Ω max matching

between channels, and 4Ω max R

flatness.

These switches also offer 5pC max charge injection

and a minimum of 2000V ESD protection per Method

3015.7.

For equivalent devices specified for single-supply oper-

ation, see the MAX323/MAX324/MAX325 data sheet.

For quad versions of these switches, see the

MAX391/MAX392/MAX393 data sheet.

________________________Applications

Battery-Operated Systems Sample-and-Hold Circuits

Heads-Up Displays Guidance and Control Systems

Audio and Video Switching Military Radios

Test Equipment Communications Systems

±5V DACs and ADCs PBX, PABX

____________________________Features

♦ Low On-Resistance, 35Ω max (16Ω typical)

♦ R

Matching Between Channels <2Ω

♦ R

Flatness <4Ω

♦ Guaranteed Charge Injection <5pC

♦ Bipolar Supply Operation (±3V to ±8V)

♦ Low Power Consumption, <1.25mW

♦ Low Leakage Current Over Temperature,

<2.5nA at +85°C

♦ Fast Switching, t

<150ns, t

OFF

<100ns

♦ Guaranteed Break-Before-Make (MAX322 only)

______________Ordering Information

MAX320/MAX321/MAX322

Precision, Dual-Supply, SPST

Analog Switches

________________________________________________________________

Maxim Integrated Products

SWITCHES SHOWN FOR LOGIC "0" INPUT

MAX321

LOGIC SWITCH

OFF

TOP VIEW

DIP/SO/µMAX

MAX320

LOGIC SWITCH

OFF

MAX322

LOGIC SWITCH 1

OFF

SWITCH 2

OFF

V+

IN1

COM2

NO2

V-

IN2

COM1

NO1

MAX320

DIP/SO/µMAX

V+

IN1

COM2

NC2

V-

IN2

COM1

NC1

MAX321

DIP/SO/µMAX

V+

IN1

COM2

NC2

V-

IN2

COM1

NO1

MAX322

_____________________Pin Configurations/Functional Diagrams/Truth Tables

Call toll free 1-800-998-8800 for free samples or literature.

19-0350; Rev 0; 12/94

Ordering Information continued at end of data sheet.

* Contact factory for dice specifications.

** Contact factory for availability.

8 CERDIP**-55°C to +125°CMAX320MJA

8 CERDIP**-40°C to +85°CMAX320EJA

8 SO-40°C to +85°CMAX320ESA

8 Plastic DIP-40°C to +85°CMAX320EPA

Dice*0°C to +70°CMAX320C/D

8 SO0°C to +70°CMAX320CSA

8 Plastic DIP0°C to +70°C

MAX320CPA

PIN-PACKAGETEMP. RANGEPART

8 µMAX0°C to +70°CMAX320CUA

Summary of content (8 pages)

PAGE 1
9-0350; Rev 0; 12/94 Precision, Dual-Supply, SPST Analog Switches ________________________Applications Battery-Operated Systems Sample-and-Hold Circuits Heads-Up Displays Guidance and Control Systems Audio and Video Switching Military Radios Test Equipment Communications Systems ±5V DACs and ADCs PBX, PABX ____________________________Features ♦ Low On-Resistance, 35Ω max (16Ω typical) ♦ RON Matching Between Channels <2Ω ♦ RON Flatness <4Ω ♦ Guaranteed Charge Injection <5pC ♦ Bipolar Supply Oper
PAGE 2
ABSOLUTE MAXIMUM RATINGS Voltage Referenced to VV+ ................................................................(V- - 0.3V) to +17V IN_, COM_, NC_, NO_ (Note 1) .........(V- - 0.3V) to (V+ + 0.3V) Continuous Current (any terminal) ......................................30mA Peak Current, COM_, NO_, NC_ (pulsed at 1ms, 10% duty cycle max) ..............................100mA ESD per Method 3015.7 ..................................................>2000V Continuous Power Dissipation Plastic DIP (derate 9.
PAGE 3
Precision, Dual-Supply, SPST Analog Switches (V+ = +5V ±10%, V- = -5V ±10%, VINH = 3.5V, VINL = 2.5V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS LOGIC INPUT Input Current with Input Voltage High IINH -0.5 0.005 0.5 µA Input Current with Input Voltage Low IINL -0.5 0.005 0.5 µA Input Voltage High VINH Input Voltage Low VINL V+ = 5V ±10%, V- ≤ 0V 3.5 3V < V+ < 8V, V- ≤ 0V V V+ - 1.5 V+ = 5V ±10%, V- ≤ 0V 2.
PAGE 4
__________________________________________Typical Operating Characteristics (V+ = +5V, V- = -5V, TA = +25°C, unless otherwise noted.) A 25 B 0.35 20 15 C ∆RON (Ω) V± = ±5V RON (Ω) RON (Ω) 20 15 D 10 10 V± = ±8V A: B: C: D: 5 5 0 0 -6 -4 -2 0 2 4 6 -5 -4 -3 8 -2 -1 ON LEAKAGE CURRENT vs. TEMPERATURE 2 3 0.20 0 -5 0.1 0.01 0.001 -1 -3 1 3 5 VCOM (V) CHARGE INJECTION vs. VOLTAGE AT COM PIN V+ = +5.5V, V- = -5.5V VCOM = ±4.5V VNC or VNO = 4.
PAGE 5
Precision, Dual-Supply, SPST Analog Switches POSITIVE SUPPLY PIN NAME FUNCTION D1 NO1 (MAX320/MAX322) Normally Open Analog Switch Terminal V+ 1 NC1 (MAX321) Normally Closed Analog Switch Terminal 2, 6 COM1, COM2 Analog Switch Common Terminals 3, 7 IN2, IN1 4 V- Negative Supply Normally Open Analog Switch Terminal 5 NC2 (MAX321/MAX322) V+ COM Logic Inputs NO2 (MAX320) 8 NO Vg Normally Closed Analog Switch Terminal Positive Supply __________Applications Information Logic Levels Calcula
PAGE 6
MAX320/MAX321/MAX322 Precision, Dual-Supply, SPST Analog Switches ______________________________________________Test Circuits/Timing Diagrams MAX320 MAX321 MAX322 SWITCH INPUT +5V V+ NO or NC COM V COM LOGIC INPUT SWITCH OUTPUT t r < 20ns t f < 20ns 50% VOUT RL 300Ω CL 35pF t OFF IN VOUT V- LOGIC INPUT SWITCH OUTPUT 0V 0.9 x VOUT t ON -5V CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VCOM RL + RON ( 0.
PAGE 7
Precision, Dual-Supply, SPST Analog Switches 10nF SIGNAL GENERATOR 0dBm MAX320 MAX321 MAX322 +5V COM SIGNAL GENERATOR 0dBm V+ IN VIN V+ COM1 N01 IN1 IN2 50Ω VIN 0V or 2.4V NC COM or NO ANALYZER MAX320 MAX321 MAX322 10nF +5V COM2 N02 ANALYZER V- N.C. V- RL RL -5V 10nF Figure 5. Off Isolation 10nF -5V Figure 6.
PAGE 8
MAX320/MAX321/MAX322 Precision, Dual-Supply, SPST Analog Switches __Ordering Information (continued) PART TEMP.