MAXIM MAX4729, MAX4730 Technical data

General Description

The MAX4729/MAX4730 single-pole/double-throw
(SPDT) switches operate from a single supply ranging
from +1.8V to +5.5V. These switches provide low 3.5Ω
on-resistance (RON), as well as 0.45Ω RONflatness with
a +2.7V supply. These devices typically consume only
1nA of supply current, making them ideal for use in low­power, portable applications. The MAX4729/MAX4730
feature low-leakage currents over the extended temper­ature range, TTL/CMOS-compatible digital logic, and
excellent AC characteristics.

The MAX4729/MAX4730 are available in small 6-pin
SC70 and 6-pin µDFN packages. The MAX4729/
MAX4730 are offered in three pinout configurations to
ease design. The MAX4729/MAX4730 are specified
over the extended -40°C to +85°C temperature range.

Applications

Battery-Operated Equipment

Audio and Video-Signal Routing

Low-Voltage Data-Acquisition Systems

Sample-and-Hold Circuits

Communications Circuits

Relay Replacement

Features

♦ Low 3.5Ω RON(+2.7V Supply)

♦ 0.45Ω RONFlatness (+2.7V Supply)

♦ 0.05Ω R

ON

Match Between Channels (+2.7V

Supply)

♦ Tiny SC70 and µDFN Packages

♦ -3dB Bandwidth: 300MHz

♦ Low On-Capacitance: 19.5pF

♦ 0.036% Total Harmonic Distortion

♦ Low Supply Current: 1nA

♦ +1.8V to +5.5V Single-Supply Operation

MAX4729/MAX4730

Low-Voltage 3.5ΩΩ, SPDT,

CMOS Analog Switches

________________________________________________________________ Maxim Integrated Products 1

5

COM

TOP VIEW

V+

NC

SWITCHES SHOWN FOR LOGIC 0 INPUT.

GND

1

6

NO

IN

SC70

2

3

4

V+

GND

IN

16

NC

NO

µDFN

2

3

4

GND

NC

1

6 IN

5 V+

NO

SC70
µDFN

2

3

4

MAX4729

MAX4729

MAX4730

COM

NO

OFF

ON

NC

ON

OFF

0
1

MAX4729/

MAX4730

IN

5

COM

Pin Configurations/Functional Diagrams/Truth Table

Ordering Information

19-3284; Rev 1; 2/05

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

PIN-

TOP

MARK

MAX4729EXT-T

6 SC70-6 ABU

MAX4729ELT-T*

6 µDFN-6 —

MAX4730EXT-T

6 SC70-6 ABV

MAX4730ELT-T*

6 µDFN-6 —

*Future product—contact factory for availability.

TEMP RANGE

-40ºC to +85ºC

-40ºC to +85ºC

-40ºC to +85ºC

-40ºC to +85ºC

PACKAGE

MAX4729/MAX4730

Low-Voltage 3.5ΩΩ, SPDT,
CMOS Analog Switches

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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 ground)

V+, IN .......................................................................-0.3V to +6V

COM, NO, NC (Note 1)..................................-0.3V to (V+ +0.3V)

Continuous Current (IN, V+, GND) ...................................±30mA

Continuous Current (COM, NO, NC) ................................±80mA

Peak Current COM, NO, NC

(Pulsed at 1ms, 10% Duty Cycle)................................±150mA

Continuous Power Dissipation (T

A

= +70°C)

6-Pin µDFN (derate 2.1mW/°C above +70°C) ..............168mW

6-Pin SC70 (derate 3.1mW/°C above +70°C)...............245mW

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

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

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

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

ELECTRICAL CHARACTERISTICS

(V+ = +2.7V to +3.6V, VIH= +2.0V, VIL= +0.4V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS T

A

MIN

TYP

MAX

UNITS

ANALOG SWITCH

Analog Signal Range

V

COM

,

0V+V

+25°C 3.5 5.5

On-Resistance (Note 6) R

ON

V+ = 2.7V, I

COM

= 10mA,

V

NO

or VNC = 0V to V+

5.7

Ω

+25°C

V+ = 2.7V, I

COM

= 10mA,

V

NO

or VNC = 0.7V, 1.2V,

2V (MAX4729)

0.2

+25°C 0.2

On-Resistance Match Between
Channels (Notes 3, 6)

∆R

ON

V+ = 2.7V, I

COM

= 10mA,

V

NO

or VNC = 0.7V, 1.2V,

2V (MAX4730)

Ω

+25°C 0.8 1.5

V+ = 2.7V, I

COM

= 10mA,

V

NO

or VNC = 0.7V, 1.2V,

2V (MAX4729)

2.2

+25°C

On-Resistance Flatness (Note 4)

)

V+ = 2.7V, I

COM

= 10mA,

V

NO

or VNC = 0.7V, 1.2V,

2V (MAX4730)

1.3

Ω

+25°C -2

+2

NO, NC Off-Leakage Current

I

NO (OFF),

)

V+ = 3.3V, V

COM

= 1V, 3V,

V

NO

or VNC = 3V, 1V

-3 +3

nA

+25°C -3

+3

COM On-Leakage Current

)

V+ = 3.3V, V

COM

= 1V or

3V, V

NO

or VNC = 1V, 3V, or

float

-4 +4

nA

DIGITAL INPUTS

Input Logic High V

IH

2.0 V

Input Logic Low V

IL

0.4 V

Input Leakage Current I

IN

VIN = 0V or 3.6V

-1

+1 µA

Note 1: Signals on NO, NC, or COM exceeding V+ or GND are clamped by internal diodes. Signals on IN exceeding GND are

clamped by an internal diode. Limit forward-diode current to maximum current rating.

V

NO, VNC

R

FLAT(ON

I

NC (OFF

I

COM (ON

T

to T

MIN

MAX

0.05 0.15

T

to T

MIN

MAX

0.34

T

MIN

to T

MAX

0.37

T

to T

MIN

MAX

0.45 0.95

T

to T

MIN

MAX

+0.01

T

MIN

to T

MAX

+0.01

T

to T

MIN

MAX

T

to T

MIN

MAX

T

to T

MIN

MAX

T

to T

MIN

MAX

+0.005

MAX4729/MAX4730

Low-Voltage 3.5ΩΩ, SPDT,

CMOS Analog Switches

_______________________________________________________________________________________ 3

PARAMETER

SYMBOL

CONDITIONS T

A

MIN

TYP

MAX

UNITS

DYNAMIC

+25°C 18 45

Turn-On Time (Note 5) t

ON

CL = 35pF, Figure 1

45

ns

+25°C 10 26

Turn-Off Time (Note 5) t

OFF

CL = 35pF, Figure 1

26

ns

+25°C 5

Break-Before-Make (Note 5)

CL = 35pF, Figure 1

1

ns

Charge Injection Q

3pC

NO, NC Off-Capacitance

C

NO(OFF)

,

)

f = 1MHz, Figure 4 6.5 pF

Switch On-Capacitance C

ON

f = 1MHz, Figure 4

pF

f = 1MHz -67

Off-Isolation (Note 7) V

ISO

VNO = VNC = 1V

RMS

, RL =

50Ω, C

L

= 5pF, Figure 2

f = 10MHz -45

dB

On-Channel Bandwidth -3dB BW Signal = 0dBm, 50Ω in and out, Figure 2

MHz

f = 1MHz -67

Crosstalk (Note 8) V

CT

NO or NC = 1V

RMS

, CL =

5pF, R

L

= 50Ω, Figure 2

f = 10MHz -52

dB

Total Harmonic Distortion THD

R

L

= 600Ω, VNC or VNO =

2V

P-P

, f = 20Hz to 20kHz

+25°C

%

POWER SUPPLY

Power-Supply Range V+ 1.8 5.5 V

+25°C

Positive Supply Current I+

1

µA

ELECTRICAL CHARACTERISTICS (continued)

(V+ = +2.7V to +3.6V, VIH= +2.0V, VIL= +0.4V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

Note 2: SC70 and µDFN parts are 100% tested at T

A

= +25°C. Limits across the full-temperature range are guaranteed by design

and correlation.

Note 3: ∆R

ON

= R

ON(MAX)

- R

ON(MIN)

.

Note 4: R

ON

flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the

specified analog signal ranges.

Note 5: Guaranteed by design.
Note 6: µDFN is guaranteed by design.
Note 7: Off-Isolation = 20log10 (VO / VI), where VO is V

COM

and VI is either VNCor VNOfrom the network analyzer.

Note 8: Crosstalk is measured between the two switches.

C

NC(OFF

VNO, VNC = 2V, RL = 300Ω,

VNO, VNC = 2V, RL = 300Ω,

VNO, VNC = 2V, RL = 300Ω,

V

= 0V, R

GEN

GEN

T

to T

MIN

MAX

T

to T

MIN

MAX

T

to T

MIN

MAX

= 0, CL = 1.0nF, Figure 3

19.5

300

0.035

V+ = 5.5V, VIN = 0V or 5.5V

T

MIN

to T

MAX

0.001