MAXIM MAX4731, MAX4732, MAX4733 User Manual

General Description

The MAX4731/MAX4732/MAX4733 low-voltage, dual, single-pole/single-throw (SPST) analog switches operate from a single +2V to +11V supply and handle railto-rail analog signals. These switches exhibit low leakage current (0.1nA) and consume less than 0.5nW (typ) of quiescent power, making them ideal for batterypowered applications.

When powered from a +3V supply, these switches feature 50Ω (max) on-resistance (RON) with 3.5Ω (max) matching between channels, and 9Ω (max) flatness over the specified signal range.

The MAX4731 has two normally open (NO) switches, the MAX4732 has two normally closed (NC) switches, and the MAX4733 has one NO and one NC switch. The MAX4731/MAX4732/MAX4733 are available in 9-bump chip-scale packages (UCSP™), along with 8-pin TDFN and 8-pin µMAX®packages. The tiny UCSP occupies a

1.52mm ✕ 1.52mm area and significantly reduces the required PC board area.

Applications

Battery-Powered Systems

Audio/Video-Signal Routing

Low-Voltage Data-Acquisition Systems

Cell Phones

Communications Circuits

PDAs

Features

♦ 1.52mm ✕ 1.52mm UCSP Package ♦ Guaranteed On-Resistance (RON)

25Ω (max) at +5V 50Ω (max) at +3V

♦ On-Resistance Matching

3Ω (max) at +5V

3.5Ω (max) at +3V

♦ Guaranteed < 0.1nA Leakage Current at

TA= +25°C

♦ Single-Supply Operation from +2.0V to +11V ♦ TTL/CMOS-Logic Compatible ♦ -108dB Crosstalk (1MHz) ♦ -72dB Off-Isolation (1MHz) ♦ Low Power Consumption: 0.5nW (typ) ♦ Rail-to-Rail Signal Handling

MAX4731/MAX4732/MAX4733

Ω,

Dual SPST Analog Switches in UCSP

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-2645; Rev 2 12/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP

RANGE

TOP

MARK

MAX4731EUA

8 µMAX —

MAX4731ETA

ALG

MAX4731EBL-

9 UCSP-9

ABV

MAX4732EUA

8 µMAX —

MAX4732ETA

ALH

MAX4732EBL-

9 UCSP-9 ABT

MAX4733EUA

8 µMAX —

MAX4733ETA

ALI

MAX4733EBL-

9 UCSP-9

ABS

NO2

V+

GND

IN2

IN1

NO1

COM1

COM2

TOP VIEW

(BUMPS

ON BOTTOM)

UCSP

MAX4731

A3A2

MAX4732

NC2V+

GND

IN2

IN1

NC1

COM1

COM2

UCSP

A3A2

IN_

NO_

MAX4731

OFF

SWITCHES SHOWN

FOR LOGIC "0" INPUT

IN_

NC_

MAX4732

OFF

SWITCHES SHOWN

FOR LOGIC "0" INPUT

COM1

GND

NO1

TDFN

MAX4731

COM2

NO2

IN1

IN2

COM1

GND

NC1

TDFN

MAX4732

IN1

COM2

V+

IN2

TOP VIEW

(BUMPS

ON BOTTOM)

V+

NC2

Pin Configurations/Functional Diagrams/Truth Tables

UCSP is a trademark of Maxim Integrated Products, Inc. µMAX is a registered trademark of Maxim Integrated Products, Inc.

Pin Configurations/Functional Diagrams/Truth Tables continued at end of data sheet.

*Future product—contact factory for availability. **EP = Exposed pad.

PIN/BUMPPACKAGE

-40°C to +85°C

-40°C to +85°C 8 TDFN-EP**

-40°C to +85°C

-40°C to +85°C 8 TDFN-EP**

-40°C to +85°C

-40°C to +85°C 8 TDFN-EP**

-40°C to +85°C

MAX4731/MAX4732/MAX4733

Ω,

Dual SPST Analog Switches in UCSP

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—Single +3V Supply

(V+ = +3V ±10%, VIH= +2.0V, VIL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +3V, TA= +25°C.)

(Notes 3, 4)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

(All voltages referenced to GND.)

V+ ...........................................................................-0.3V to +12V

IN_, COM_, NO_, NC_ (Note 1)....................-0.3V to (V+ + 0.3V)

Continuous Current (any pin) ...........................................±10mA

Peak Current (any pin, pulsed at 1ms, 10% duty cycle) ...±20mA Continuous Power Dissipation (T

= +70°C)

8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW

8-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW

9-Bump UCSP (derate 4.7mW/°C above +70°C).........379mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Maximum Junction Temperature .....................................+150°C

Lead Temperature (soldering, 10s) .................................+300°C

Bump Temperature (soldering, Note 2)

Infrared (15s) ...............................................................+220°C

Vapor Phase (60s) .......................................................+215°C

Note 1: Signals on IN_, NO_, NC_, or COM_ exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to

maximum current rating.

Note 2: This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device

can be exposed to during board level solder attach and rework. This limit permits only the use of the solder profiles recommended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and Convection reflow. Preheating is required. Hand or wave soldering is not allowed.

PARAMETER

CONDITIONS T

UNITS

ANALOG SWITCH

Analog Signal Range

COM_

0V+V

19 50

On-Resistance R

V+ = +2.7V, I

COM_

= 5mA;

NO_

or V

NC_

= +1.5V

MIN

Ω

0.8 3.5

On-Resistance Matching Between Channels (Notes 5, 6)

∆R

V+ = +2.7V, I

COM_

= 5mA;

NO_

or V

NC_

= +1.5V

MIN

4.5

Ω

2.3 9

On-Resistance Flatness (Note 7)

)

V+ = +2.7V, I

COM_

= 5mA;

MIN

Ω

NO_ or NC_ Off-Leakage Current (Note 8)

)

V+ = +3.6V, V

COM_

= +0.3V, +3V;

NO_

or V

NC_

= +3V, +0.3V

MIN

-2 +2

COM_ Off-Leakage Current (Note 8)

)

V+ = +3.6V, V

COM_

= +0.3V, +3V;

NO_

or V

NC_

= +3V, +0.3V

MIN

-2 +2

COM_ On-Leakage Current (Note 8)

)

V+ = +3.6V, V

COM_

= +0.3V, +3.0V;

NO_

or V

NC_

= +0.3V, +3V, or

floating

MIN

-4 +4

SYMBOL

MIN TYP MAX

, V

NO_

NC_

FLAT(ON

COM_(OFF

COM_(ON

NO_(OFF

NC_(OFF

or V

NO_

NC_

= +1V, +1.5V, +2V

+25°C

MAX

+25°C

MAX

+25°C

MAX

+25°C -0.1 +0.1

MAX

+25°C -0.1 +0.1

MAX

+25°C -0.2 +0.2

MAX

MAX4731/MAX4732/MAX4733

Ω,

Dual SPST Analog Switches in UCSP

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)

(V+ = +3V ±10%, VIH= +2.0V, VIL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +3V, TA= +25°C.)

(Notes 3, 4)

PARAMETER

CONDITIONS T

UNITS

DYNAMIC CHARACTERISTICS

70 150

Turn-On Time t

NO_

or V

NC_

= +1.5V,

= 300Ω,

= 35pF, Figure 2

MIN

170

30 60

Turn-Off Time t

OFF

NO_

or V

NC_

= +1.5V,

= 300Ω, CL = 35pF,

Figure 2

MIN

Break-Before-Make (MAX4733 Only, Note 8)

BBM

NO_

or V

NC_

= +1.5V,

= 300Ω, CL = 35pF,

Figure 3

MIN

Charge Injection Q

GEN

= 0V, R

GEN

= 0, CL = 1.0nF,

Figure 4

7.5 pC

On-Channel -3dB Bandwidth BW Signal = 0dBm, 50Ω in and out

MHz

Off-Isolation (Note 9) V

ISO

f = 1MHz, V

COM_

= 1V

RMS

= 50Ω, CL = 5pF,

Figure 5

-72 dB

Crosstalk (Note 10) V

f = 1MHz, V

COM_

= 1V

RMS

= 50Ω, CL = 5pF,

Figure 6

NO_ or NC_ Off-Capacitance C

OFF

f = 1MHz, Figure 7

20 pF

COM_ Off-Capacitance

)

f = 1MHz, Figure 7

20 pF

COM_ On-Capacitance

)

f = 1MHz, Figure 7

40 pF

LOGIC INPUT

Input Logic High V

1.4 V

Input Logic Low V

0.8 V

Input Leakage Current I

IN_

= 0V or V+ -1

+1 µA

SUPPLY

Power-Supply Range V+ 2.0 11 V

Positive Supply Current I+

V+ = +5.5V, V

IN_

= 0V or V+,

all switches on or off

1µA

SYMBOL

COM_(OFF

COM_(ON

MIN TYP MAX

+25°C

MAX

+25°C

MAX

+25°C

MAX

+25°C

+25°C 300

+25°C

+25°C -108

+25°C

+0.005

0.0001

MAX4731/MAX4732/MAX4733

Ω,

Dual SPST Analog Switches in UCSP

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—Single +5V Supply

(V+ = +5V ±10%, VIH= +2.0V, VIL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +5V, TA= +25°C.)

(Notes 3, 4)

PARAMETER

CONDITIONS T

UNITS

ANALOG SWITCH

Analog Signal Range

COM_

0V+V

8.5 25

On-Resistance R

V+ = +4.5V, I

COM_

= 5mA,

NO_

or V

NC_

= +3.5V

MIN

Ω

0.2 3

On-Resistance Matching Between Channels (Notes 5, 6)

∆R

V+ = +4.5V, I

COM_

= 5mA,

NO_

or V

NC_

= +3.5V

MIN

Ω

On-Resistance Flatness (Note 7)

)

V+ = +4.5V, I

COM_

= 5mA,

NO_

or V

NC_

= +1V, +2V, +3V

MIN

Ω

NO_ or NC_ Off-Leakage Current (Note 8)

)

V+ = +5.5V, V

COM_

= +1V, +4.5V;

NO_

or V

NC_

= +4.5V, +1V

MIN

-2 +2

COM_ Off-Leakage Current (Note 8)

)

V+ = +5.5V, V

COM_

= +1V, +4.5V;

NO_

or V

NC_

= +4.5V, +1V

MIN

-2 +2

COM_ On-Leakage Current (Note 8)

)

V+ = +5.5V, V

COM_

= +1V, +4.5V;

NO_

or V

NC_

= +1V, +4.5V, or

floating

MIN

-4 +4

DYNAMIC CHARACTERISTICS

47 85

Turn-On Time t

NO_

or V

NC_

= +3.0V,

= 300Ω, CL = 35pF,

Figure 2

MIN

23 45

Turn-Off Time t

OFF

NO_

or V

NC_

= +3.0V,

= 300Ω, CL = 35pF,

Figure 2

MIN

Break-Before-Make (MAX4733 Only, Note 8)

BBM

NO_

or V

NC_

= +3.0V,

= 300Ω, CL = 35pF,

Figure 3

MIN

Charge Injection Q

GEN

= 0V, R

GEN

= 0,

= 1.0nF, Figure 4

7.5 pC

On-Channel Bandwidth BW

Signal = 0dBm, 50Ω in and out

MHz

Off-Isolation (Note 9) V

ISO

f = 1MHz, V

COM_

= 1V

RMS

= 50Ω, CL = 5pF,

Figure 5

-72 dB

SYMBOL

, V

NO_

FLAT(ON

NO_(OFF

NC_(OFF

COM_(OFF

COM_(ON

NC_

MIN TYP MAX

+25°C

MAX

+25°C

MAX

+25°C

MAX

+25°C -0.1 +0.1

MAX

+25°C -0.1 +0.1

MAX

+25°C -0.2 +0.2

MAX

+25°C

MAX

+25°C

MAX

+25°C

MAX

+25°C

+25°C 300

+25°C

MAX4731/MAX4732/MAX4733

Ω,

Dual SPST Analog Switches in UCSP

_______________________________________________________________________________________ 5

Note 3: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in

this data sheet.

Note 4: UCSP and TDFN parts are 100% tested at +25°C only, and guaranteed by design over temperature. µMAX parts are

100% tested at +85°C and +25°C and guaranteed by design over temperature.

Note 5: ∆R

= R

ON(MAX)

- R

ON(MIN)

Note 6: UCSP on-resistance matching between channels and on-resistance flatness guaranteed by design. Note 7: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the

specified analog signal range.

Note 8: Guaranteed by design. Note 9: Off-Isolation = 20 log

10(VNO_/VCOM_

), V

NO_

= output, V

COM_

= input to off switch.

Note 10: Between any two switches.

ELECTRICAL CHARACTERISTICS—Single +5V Supply

(V+ = +5V ±10%, VIH= +2.0V, VIL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +5V, TA= +25°C.)

(Notes 3, 4)

PARAMETER

SYMBOL

CONDITIONS T

MIN

TYP

MAX

UNITS

Crosstalk (Note 10) V

f = 1MHz, V

COM_

= 1V

RMS

= 50Ω, CL = 5pF,

Figure 6

NO_ or NC_ Off-Capacitance C

OFF

f = 1MHz, Figure 7

20 pF

COM_ Off-Capacitance

)

f = 1MHz, Figure 7

20 pF

COM_ On-Capacitance

)

f = 1MHz, Figure 7

40 pF

LOGIC INPUT

Input Logic High V

2.0 V

Input Logic Low V

0.8 V

Input Leakage Current I

IN_

= 0V or V+ -1

+1 µA

SUPPLY

Power-Supply Range V+ 2.0 11 V

Positive Supply Current I+

V+ = +5.5V, V

IN_

= 0V or V+,

all switches on or off

1µA

COM_(OFF

COM_(ON

+25°C -108

+25°C

+0.005

0.0001

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