Datasheet

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General Description

The MAX4731/MAX4732/MAX4733 low-voltage, dual,

single-pole/single-throw (SPST) analog switches oper-

ate from a single +2V to +11V supply and handle rail-

to-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 battery-

powered applications.

When powered from a +3V supply, these switches fea-

ture 50Ω (max) on-resistance (R

) 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 (R

)

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

= +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

PIN/BUMP-

PACKAGE

TOP

MARK

MAX4731EUA

-40°C to +85°C

8 µMAX —

MAX4731ETA

-40°C to +85°C 8 TDFN-EP**

ALG

MAX4731EBL-

-40°C to +85°C

9 UCSP-9

ABV

MAX4732EUA

-40°C to +85°C

8 µMAX —

MAX4732ETA

-40°C to +85°C 8 TDFN-EP**

ALH

MAX4732EBL-

-40°C to +85°C

9 UCSP-9 ABT

MAX4733EUA

-40°C to +85°C

8 µMAX —

MAX4733ETA

-40°C to +85°C 8 TDFN-EP**

ALI

MAX4733EBL-

-40°C to +85°C

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.

Summary of content (14 pages)

PAGE 1
9-2645; Rev 2 12/06 50Ω, Dual SPST Analog Switches in UCSP 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.
PAGE 2
MAX4731/MAX4732/MAX4733 50Ω, Dual SPST Analog Switches in UCSP ABSOLUTE MAXIMUM RATINGS (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 (TA = +70°C) 8-Pin µMAX (derate 4.5mW/°C above +70°C) ....
PAGE 3
50Ω, Dual SPST Analog Switches in UCSP (V+ = +3V ±10%, VIH = +2.0V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = +3V, TA = +25°C.) (Notes 3, 4) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX 70 150 UNITS DYNAMIC CHARACTERISTICS Turn-On Time tON VNO_ or VNC_ = +1.5V, RL = 300Ω, CL = 35pF, Figure 2 Turn-Off Time tOFF VNO_ or VNC_ = +1.5V, RL = 300Ω, CL = 35pF, Figure 2 Break-Before-Make (MAX4733 Only, Note 8) tBBM VNO_ or VNC_ = +1.
PAGE 4
MAX4731/MAX4732/MAX4733 50Ω, Dual SPST Analog Switches in UCSP ELECTRICAL CHARACTERISTICS—Single +5V Supply (V+ = +5V ±10%, VIH = +2.0V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = +5V, TA = +25°C.) (Notes 3, 4) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Matching Between Channels (Notes 5, 6) VCOM_, VNO_, VNC_ 0 RON V+ = +4.5V, ICOM_ = 5mA, VNO_ or VNC_ = +3.5V ∆RON V+ = +4.
PAGE 5
0Ω, Dual SPST Analog Switches in UCSP (V+ = +5V ±10%, VIH = +2.0V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = +5V, TA = +25°C.
PAGE 6
Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) ON-RESISTANCE vs. VCOM (V+ = +3.0V) ON-RESISTANCE vs. VCOM (V+ = +2.5V) V+ = +2.0V 40 TA = +85°C 25 30 MAX4731-33 toc02 30 MAX4731-33 toc01 50 25 MAX4731-33 toc03 ON-RESISTANCE vs. VCOM TA = +85°C V+ = +3.0V V+ = +5.0V 4 6 8 1.0 1.5 8 TA = +25°C ON/OFF-LEAKAGE CURRENT (pA) MAX4731-33 toc04 TA = +85°C V+ = +5V 100 ON-LEAKAGE 10 1 1 2 3 4 5 2.0 2.5 V+ = +5.0V 35 30 25 20 V+ = +3.
PAGE 7
50Ω, Dual SPST Analog Switches in UCSP -20 tON, V+ = +5.0V 50 LOSS (dB) tON/OFF (ns) 60 0 40 1 ON-LOSS -40 OFF-ISOLATION -60 0.1 RL = 1kΩ V+ = +5.0V 0.01 RL = 100kΩ V+ = +3.0V 30 -80 20 tOFF, V+ = +3.0V 10 0 0.001 CROSSTALK -100 tOFF, V+ = +5.0V -20 0 20 40 60 80 RL = 100kΩ V+ = +5.0V V+ = +3V -120 -40 VCOM = 2VP-P BW = 30kHz RL = 1kΩ V+ = +3.0V THD (%) tON, V+ = +3.0V MAX4731-33 toc11 MAX4731-33 toc10 80 70 TOTAL HARMONIC DISTORTION vs.
PAGE 8
MAX4731/MAX4732/MAX4733 50Ω, Dual SPST Analog Switches in UCSP Analog Signal Levels Analog signals that range over the entire supply voltage (GND to V+) pass with very little change in RON (see Typical Operating Characteristics). The bidirectional switches allow NO_, NC_, and COM_ connections to be used as either inputs or outputs. Power-Supply Sequencing and Overvoltage Protection CAUTION: Do not exceed the absolute maximum ratings.
PAGE 9
50Ω, Dual SPST Analog Switches in UCSP MAX4731 MAX4732 MAX4733 V+ VN_ V+ COM_ NO_ OR NC_ 50% VIL VOUT CL 35pF RL 300Ω tOFF IN_ VOUT SWITCH OUTPUT GND LOGIC INPUT tr < 5ns tf < 5ns VIH LOGIC INPUT 0.9 x VOUT 0.9 x VOUT 0V tON CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VN_ ( R + R ) L LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. ON Figure 2.
PAGE 10
MAX4731/MAX4732/MAX4733 50Ω, Dual SPST Analog Switches in UCSP Test Circuits/Timing Diagrams (continued) 10nF SIGNAL GENERATOR 0dBm 10nF V+ MAX4731 MAX4732 MAX4733 V+ COM_ IN_ VIL OR VIH NC_ OR NO_ ANALYZER SIGNAL GENERATOR 0dBm 0 OR 2.4V V+ V+ COM1 0 OR 2.4V RL V- 10nF NOTE: DUAL SUPPLIES USED TO ACCOMODATE GROUND-REFERENCED INSTRUMENTS. Figure 6.
PAGE 11
50Ω, Dual SPST Analog Switches in UCSP TOP VIEW (BUMPS ON BOTTOM) MAX4733 MAX4733 COM1 NO1 A1 IN1 B1 V+ C1 A2 A3 GND B3 IN2 C3 C2 EP NO1 1 8 V+ COM1 2 7 IN1 IN2 3 6 COM2 GND 4 5 NC2 NC2 COM2 UCSP MAX4733 IN_ NO1 NC2 0 OFF ON 1 ON OFF SWITCHES SHOWN FOR LOGIC "0" INPUT TDFN EP = EXPOSED PAD TOP VIEW MAX4732 MAX4731 NO1 1 8 V+ NC1 1 COM1 2 7 IN1 IN2 3 6 GND 4 5 µMAX COM2 NO2 MAX4733 8 V+ NO1 1 COM1 2 7 IN1 IN2 3 6 GND 4 5 µMAX COM2 NC2
PAGE 12
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 9LUCSP, 3x3.
PAGE 13
50Ω, Dual SPST Analog Switches in UCSP 6, 8, &10L, DFN THIN.EPS PACKAGE OUTLINE, 6,8,10 & 14L, TDFN, EXPOSED PAD, 3x3x0.80 mm 21-0137 COMMON DIMENSIONS MIN. MAX. PKG. CODE N D2 E2 e JEDEC SPEC b [(N/2)-1] x e A 0.70 0.80 T633-1 6 1.50–0.10 2.30–0.10 0.95 BSC MO229 / WEEA 0.40–0.05 1.90 REF D 2.90 3.10 T633-2 6 1.50–0.10 2.30–0.10 0.95 BSC MO229 / WEEA 0.40–0.05 1.90 REF E 2.90 3.10 T833-1 8 1.50–0.10 2.30–0.10 0.65 BSC MO229 / WEEC 0.30–0.05 1.95 REF A1 0.
PAGE 14
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 4X S 8 8 INCHES DIM A A1 A2 b E fl0.50–0.1 H c D e E H 0.6–0.1 L 1 1 α 0.6–0.1 S BOTTOM VIEW D MIN 0.002 0.030 MAX 0.043 0.006 0.037 0.014 0.010 0.007 0.005 0.120 0.116 0.0256 BSC 0.120 0.116 0.198 0.188 0.026 0.016 6¡ 0¡ 0.0207 BSC 8LUMAXD.