Datasheet

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_______________General Description

The MAX333A is a precision, quad, single-pole double-

throw (SPDT) analog switch. The four independent

switches operate with bipolar supplies ranging from

±4.5V to ±20V, or with a single-ended supply between

+10V and +30V. The MAX333A offers low on resistance

(less than 35Ω), guaranteed to match within 2Ω between

channels and to remain flat over the analog signal range

(∆3Ω max). It also offers break-before-make switching

(10ns typical), with turn-off times less than 145ns and

turn-on times less than 175ns. The MAX333A is ideal for

portable operation since quiescent current runs less

than 50µA with all inputs high or low.

This monolithic, quad switch is fabricated with Maxim’s

new improved silicon-gate process. Design improvements

guarantee extremely low charge injection (10pC), low

power consumption (3.75mW), and electrostatic discharge

(ESD) greater than 2000V.

Logic inputs are TTL and CMOS compatible and guaranteed

over a +0.8V to +2.4V range—regardless of supply voltage.

Logic inputs and switched analog signals can range any-

where between the supply voltages without damage.

________________________Applications

Test Equipment

Communications Systems

PBX, PABX

Heads-Up Displays

Portable Instruments

____________________________Features

♦ Upgraded Replacement for a DG211/DG212 Pair

or Two DG403s

♦ Low On Resistance < 17Ω Typical (35Ω Max)

♦ Guaranteed Matched On Resistance Between

Channels < 2Ω

♦ Guaranteed Flat On Resistance over Analog

Signal Range ∆3Ω Max

♦ Guaranteed Charge Injection < 10pC

♦ Guaranteed Off-Channel Leakage < 6nA at +85°C

♦ ESD Guaranteed > 2000V per Method 3015.7

♦ Single-Supply Operation (+10V to +30V)

Bipolar-Supply Operation (±4.5V to ±20V)

♦ TTL-/CMOS-Logic Compatibility

♦ Rail-to-Rail Analog Signal Handling Capability

______________Ordering Information

* Contact factory for dice specifications.

MAX333A

Precision, Quad, SPDT, CMOS Analog Switch

________________________________________________________________

Maxim Integrated Products

INPUTS

OSC

FLYING CAPACITOR

LEVEL TRANSLATOR

(2-CHANNEL)

OUTPUTS

- V

__________Typical Operating Circuit

SWITCHES ARE SHOWN WITH LOGIC "0" INPUT

N.C. = NOT INTERNALLY CONNECTED

IN4

NO4

COM4

NC4

NC1

COM1

NO1

IN1

MAX333A

V+

N.C.

NC3

COM3

COM2

NC2

GND

V-

NO3

IN3

IN2

NO2

TOP VIEW

DIP/SO/TSSOP

__________________Pin Configuration

PART TEMP. RANGE PIN-PACKAGE

MAX333ACPP 0°C to +70°C 20 Plastic DIP

MAX333ACWP 0°C to +70°C 20 Wide SO

MAX333ACUP 0°C to +70°C 20 TSSOP

MAX333AEPP -40°C to +85°C 20 Plastic DIP

MAX333AEWP -40°C to +85°C 20 Wide SO

MAX333AEUP -40°C to +85°C 20 TSSOP

19-0189; Rev 1; 6/99

MAX333AC/D 0°C to +70°C Dice*

MAX333AMJP -55°C to +125°C 20 CERDIP

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

Summary of content (8 pages)

PAGE 1
9-0189; Rev 1; 6/99 Precision, Quad, SPDT, CMOS Analog Switch ____________________________Features ♦ Upgraded Replacement for a DG211/DG212 Pair or Two DG403s ♦ Low On Resistance < 17Ω Typical (35Ω Max) ♦ Guaranteed Matched On Resistance Between Channels < 2Ω ♦ Guaranteed Flat On Resistance over Analog Signal Range ∆3Ω Max ♦ Guaranteed Charge Injection < 10pC ♦ Guaranteed Off-Channel Leakage < 6nA at +85°C ♦ ESD Guaranteed > 2000V per Method 3015.
PAGE 2
MAX333A Precision, Quad, SPDT, CMOS Analog Switch ABSOLUTE MAXIMUM RATINGS V+ to V- ..................................................................................44V VIN, VCOM, VNO, VNC ......................................................V- to V+ (VNO - VNC) ............................................................................32V V+ to Ground..........................................................................30V V- to Ground................................................................
PAGE 3
Precision, Quad, SPDT, CMOS Analog Switch MAX333A ELECTRICAL CHARACTERISTICS–DUAL SUPPLIES (continued) (GND = 0V, V+ = +15V, V- = -15V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL MIN CONDITIONS TYP MAX (Notes 2, 3) UNITS LOGIC INPUT Input Voltage Low VIL V- 0.8 V Input Voltage High VIH 2.4 V+ V Input Current IIN 1.0 µA V+ 45 45 10 60 6 V VIN = V-, V+ -1.0 0.
PAGE 4
__________________________________________Typical Operating Characteristics (TA = +25°C, unless otherwise noted). 20 20 10 5 10 0 +25°C 15 D -10 100 +85°C C 15 20 10 40 5 20 -20 -10 10 OFF LEAKAGE TA = +85°C 40 TA = +25°C 20 10 10 15 1 0.1 10 V+ = 16.5V V- = -16.5V VCOM = ±15V VNC OR VNO = ±15V 0.1 0.001 0.001 0.0001 -55 +25 +125 -55 CHARGE INJECTION vs. VCOM +125 SUPPLY CURRENT vs.
PAGE 5
Precision, Quad, SPDT, CMOS Analog Switch PIN NAME FUNCTION 1, 10, 11, 20 IN1-IN4 Logic-Level Inputs 2, 9, 12, 19 NO1-NO4 3, 8, 13, 18 COM1-COM4 4, 7, 14, 17 NC1-NC4 5 V- 6 GND Ground 15 N.C. Not Internally Connected 16 V+ Normally Open Switches Common Switch Poles Normally Closed Switches Negative Power Supply Overvoltage Protection Proper power-supply sequencing is recommended for all CMOS devices.
PAGE 6
Precision, Quad, SPDT, CMOS Analog Switch MAX333A ______________________________________________Test Circuits/Timing Diagrams +15V +15V C C V+ COM_ IN_ CAPACITANCE METER V+ COM_ 0V, 2.4V IN_ CAPACITANCE METER NO_ OR NC_ GND NO OR NC C V- 0V, 2.4V GND C V- -15V -15V Figure 4. Channel-On Capacitance Figure 3. Channel-Off Capacitance +15V LOGIC INPUT +3V V+ 50% V COM COM_ VCOM VO2 NC VO1 0.9VO IN_ 0V SWITCH OUTPUT VCOM RL2 V- GND LOGIC INPUT 0.
PAGE 7
Precision, Quad, SPDT, CMOS Analog Switch _________________________________Test Circuits/Timing Diagrams (continued) SIGNAL GENERATOR V+ COM_ 0V, 2.4V IN_ NC_ OR NO_ ANALYZER CH A CH B MAX333A +15V C GND V- FREQUENCY TESTED SIGNAL GENERATOR 1 MHz AUTOMATIC SYNTHESIZER ANALYZER TRACKING SPECTRUM ANALYZER C RL OFF ISOLATION = 20LOG -15V 100Ω VCOM VNC OR VNO C = 5pF Figure 7. Off-Isolation +15V C SIGNAL GENERATOR V+ COM_ 0V, 2.
PAGE 8
MAX333A Precision, Quad, SPDT, CMOS Analog Switch ___________________Chip Topography NO3 IN3 IN2 NO2 COM2 COM3 NC2 NC3 0.139" (3.53mm) GND V+ VNC1 NC4 COM1 COM4 NO4 IN4 IN1 NO1 0.101" (2.57mm) TRANSISTOR COUNT: 145; SUBSTRATE CONNECTED TO V+. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.