19-2381; Rev 0; 4/02
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
Features
♦ Low RON
0.8Ω (max) (3V Supply)
2Ω (max) (1.8V Supply)
♦ 0.1Ω (max) RON Flatness (3V Supply)
♦ 1.6V to 3.6V Single-Supply Operation
♦ Available in QFN (3mm x 3mm) Package
When powered from a 3V supply, the MAX4734 features low 0.8Ω (max) on-resistance (RON), with 0.2Ω
(max) RON matching and 0.1Ω RON flatness. The digital
logic input is 1.8V CMOS compatible when using a single 3V supply.
♦ High-Current Handling Capacity (150mA
Continuous)
♦ 1.8V CMOS-Logic Compatible (3V Supply)
♦ Fast Switching: tON = 25ns, tOFF = 20ns
The MAX4734 is available in space-saving 12-pin QFN
(3mm x 3mm) and 10-pin µMAX packages.
Applications
Ordering Information
Power Routing
PART
TEMP RANGE
PIN-PACKAGE
Audio and Video Signal Routing
MAX4734EUB
-40°C to +85°C
10 µMAX
Low-Voltage Data-Acquisition Systems
MAX4734EGC
-40°C to +85°C
12 QFN (3mm x 3mm)
Battery-Powered Systems
Communications Circuits
PCMCIA Cards
Cellular Phones
Modems
Hard Drives
Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
MAX4734
NO1
A0
N.C.
A1
12
11
10
1
MAX4734
9
GND
2
8
COM
NO3
3
7
NO4
4
EN
5
6
N.C.
V+
A0 1
NO2
LOGIC
10 A1
NO1
2
9
NO2
GND
3
8
COM
NO3
4
7
NO4
EN
5
6
V+
A1 A0 EN ON SWITCH
X
X 0
NONE
1
0
0
1
1
0
1
2
1
1
0
3
1
1
1
4
X = DON'T CARE
µMAX
QFN
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________ Maxim Integrated Products
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.
1
MAX4734
General Description
The MAX4734 is a low on-resistance, low-voltage, 4channel CMOS analog multiplexer that operates from a
single 1.6V to 3.6V supply. This device has fast switching speeds (tON = 25ns, tOFF = 20ns max), handles
Rail-to-Rail® analog signals, and consumes less than
4µW of quiescent power. The MAX4734 has breakbefore-make switching.
MAX4734
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND
V+, A_, EN_ ..............................................................-0.3V to +4V
COM, NO_ (Note 1) ......................................-0.3V to (V+ + 0.3V)
Continuous Current COM, NO_ ......................................±150mA
Continuous Current (all other pins)...................................±20mA
Peak Current COM, NO_
(pulsed at 1ms 10% duty cycle)..................................±300mA
Continuous Power Dissipation (TA = +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ............444mW
12-Pin QFN (derate 14.7mW/°C above +70°C) ..........1176mW
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
Note 1: Signals on COM or NO_ exceeding V+ or GND are clamped by internal diodes. Limit forward current to maximum current rating.
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.
ELECTRICAL CHARACTERISTICS—Single 3V Supply
(V+ = 2.7V to 3.6V, VIH = 1.4V, VIL = 0.5V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at V+ = 3.0V,
TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
On-Resistance (Note 4)
On-Resistance Match
Between Channels
(Notes 4, 5)
VCOM,
VNO_
RON
∆RON
On-Resistance Flatness
(Note 6)
RFLAT(ON)
NO_ Off-Leakage Current
(Note 7)
INO_(OFF)
COM Off-Leakage Current
(Note 7)
ICOM(OFF)
COM On-Leakage Current
(Note 7)
2
ICOM(ON)
0
V+ = 2.7V,
ICOM = 100mA,
VNO_ = 1.5V
+25°C
V+ = 2.7V,
ICOM = 100mA,
VNO_ = 1.5V
+25°C
V+ = 2.7V,
ICOM_ = 100mA,
VNO_ = 1V, 1.5V, 2V
+25°C
V+ = 3.6V,
VCOM = 0.3V, 3.3V,
VNO_ = 3.3V, 0.3V
0.6
0.8
Ω
TMIN to TMAX
1
0.1
0.2
Ω
TMIN to TMAX
0.3
0.05
0.1
Ω
TMIN to TMAX
0.2
+25°C
-1
TMIN to TMAX
-5
V+ = 3.6V,
VCOM = 0.3V, 3.3V,
VNO_ = 3.3V, 0.3V
+25°C
-1
TMIN to TMAX
-5
V+ = 3.6V,
VCOM = 3.3V, 0.3V,
VNO_ = 3.3V, 0.3V, or
floating
+25°C
-2
TMIN to TMAX
-10
±0.002
+1
nA
+5
±0.002
+1
nA
+5
±0.002
+2
nA
_______________________________________________________________________________________
+10
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
(V+ = 2.7V to 3.6V, VIH = 1.4V, VIL = 0.5V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at V+ = 3.0V,
TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
20
25
UNITS
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
tON
Turn-Off Time
tOFF
Break-Before-Make (Note 8)
tBBM
VNO_ = 1.5V,
RL = 50Ω, CL = 35pF,
Figure 1
VNO_ = 1.5V,
RL = 50Ω, CL = 35pF,
Figure 1
VNO_ = 1.5V,
RL = 50Ω, CL = 35pF,
Figure 2
+25°C
ns
TMIN to TMAX
30
+25°C
15
20
ns
TMIN to TMAX
25
+25°C
5
ns
TMIN to TMAX
1
VGEN = 0, RGEN = 0,
CL = 1.0nF, Figure 3
+25°C
60
pC
COFF
f = 1MHz, Figure 4
+25°C
33
pF
COM Off-Capacitance
CCOM(OFF)
f = 1MHz, Figure 4
+25°C
117
pF
COM On-Capacitance
CCOM(ON)
f = 1MHz, Figure 4
+25°C
171
pF
90
MHz
Charge Injection
Q
NO_ Off-Capacitance
-3dB On-Channel Bandwidth
BW
Signal = 0, RIN = ROUT =
50Ω, CL = 5pF, Figure 5
Off-Isolation (Note 9)
VISO
f = 1MHz, VCOM = 1VP-P, RL =
50Ω, CL = 5pF, Figure 5
+25°C
-56
dB
Crosstalk (Note 10)
VCT
f = 1MHz, VCOM = 1VP-P, RL =
50Ω, CL = 5pF, Figure 5
+25°C
-56
dB
Total Harmonic Distortion
THD
f = 20Hz to 20kHz, VCOM =
2VP-P, RL = 32Ω
+25°C
0.018
%
LOGIC INPUT (A_, EN)
Input Logic High
VIH
Input Logic Low
VIL
Input Leakage Current
IIN
1.4
VEN = 0 or 3.6V, VA_ = 0
or 3.6V
-1
V
0.005
0.5
V
+1
µA
3.6
V
1
µA
POWER SUPPLY
Power-Supply Range
V+
Positive Supply Current
I+
1.6
V+ = 3.6V, VEN, A_ = 0 or
V+, all channels on or off
0.004
_______________________________________________________________________________________
3
MAX4734
ELECTRICAL CHARACTERISTICS—Single 3V Supply (continued)
MAX4734
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
ELECTRICAL CHARACTERISTICS—Single 1.8V Supply
(V+ = 1.8V, VIH = 1.0V, VIL = 0.4V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
On-Resistance
VCOM,
VNO_
RON
0
ICOM_ = 10mA,
VNO_ = 1V
+25°C
1.5
TMIN to TMAX
2
Ω
3
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Break-Before-Make (Note 8)
Charge Injection
tON
tOFF
tBBM
Q
VNO_ = 1V,
RL = 50Ω, CL = 35pF,
Figure 1
VNO_ = 1V,
RL = 50Ω, CL = 35pF,
Figure 1
VNO_ = 1V,
RL = 50Ω, CL = 35pF,
Figure 2
+25°C
25
30
ns
TMIN to TMAX
35
+25°C
18
25
ns
TMIN to TMAX
28
+25°C
7
ns
TMIN to TMAX
1
VGEN = 0, RGEN = 0,
CL = 1nF, Figure 3
+25°C
35
pC
Off-Isolation (Note 9)
VISO
f = 1MHz, VNO_
= 1VP-P, RL = 50Ω,
CL = 5pF, Figure 5
+25°C
-56
dB
Crosstalk (Note 10)
VCT
f = 1MHz, VCOM = 1VP-P,
RL = 50Ω,
CL = 5pF, Figure 5
+25°C
-56
dB
LOGIC INPUT (A_, EN)
Input Logic High
VIH
Input Logic Low
VIL
Input Leakage Current
IIN
1
VEN = 0 or 3.6V,
VA_ = 0 or 3.6V
V
0.4
V
1
µA
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value is a maximum, is
used in this data sheet.
Note 3: -40°C specifications are guaranteed by design.
Note 4: RON and ∆RON matching specifications for QFN packaged parts are guaranteed by design.
Note 5: ∆RON = RON(MAX) - RON(MIN).
Note 6: Flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured over
the specified analog signal ranges.
Note 7: Leakage parameters are 100% tested at hot temperature and guaranteed by correlation at room temperature.
Note 8: Guaranteed by design.
Note 9: Off-Isolation = 20log10(VCOM/VNO_), VCOM = output, VNO_ = input to off switch.
Note 10: Between two switches.
4
_______________________________________________________________________________________
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
V+ = 1.8V, TA = -40°C
LEAKAGE CURRENT (pA)
2.0
V+ = 1.8V, TA = +25°C
V+ = 1.8V
V+ = 1.8V, TA = +85°C
1.5
RON (Ω)
1.5
V+ = 3.0V, TA = +85°C
1.0
V+ = 2.5V
1.0
ON, V+ = 3.0V
1000
OFF, V+ = 3.0V
100
OFF, V+ = 1.8V
ON, V+ = 1.8V
10
0.5
V+ = 3.0V
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
0
0.5
1.0
1
1.5
2.0
2.5
CHARGE INJECTION vs. VCOM
SUPPLY CURRENT vs. SUPPLY
VOLTAGE AND TEMPERATURE
1000
SUPPLY CURRENT (nA)
40
30
V+ = 3.0V
20
V+ = 1.8V
TA = +85°C
100
10
35
60
85
1.2
1.1
RISING
1.0
TA = +25°C
1
TA = -40°C
0.1
10
LOGIC-LEVEL THRESHOLD
vs. SUPPLY VOLTAGE
THRESHOLD (V)
MAX4734 toc04
50
-15
TEMPERATURE (°C)
VCOM (V)
60
-40
3.0
VCOM (V)
70
10
V+ = 3.0V, TA = +25°C
0
MAX4734 toc05
0
V+ = 3.0V, TA = -40°C
V+ = 3.6V
0
MAX4734 toc06
0.5
0.9
FALLING
0.8
0.01
0.7
0.001
0.6
0
-10
-20
0.5
0.0001
1.0
1.5
2.0
2.5
3.0
0
VCOM (V)
2.0
1.6
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
TURN-ON/OFF TIME
vs. SUPPLY VOLTAGE
30
25
2.4
2.8
3.2
3.6
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TURN-ON/OFF TIME
vs. TEMPERATURE
30
MAX4734 toc08
0.5
MAX4734 toc07
tON, V+ = 1.8V
25
tON
20
tON/tOFF (ns)
0
tON/tOFF (ns)
Q (pC)
MAX4734 toc03
10,000
MAX4734 toc02
V+ = 1.6V
2.0
RON (Ω)
2.5
MAX4734 toc01
3.0
2.5
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
ON-RESISTANCE vs. VCOM
AND TEMPERATURE
ON-RESISTANCE vs. VCOM
tOFF
15
20
tON, V+ = 3.0V
15
tOFF, V+ = 3.0V
10
10
5
5
0
tOFF, V+ = 1.8V
0
1.6
2.0
2.4
2.8
SUPPLY VOLTAGE (V)
3.2
3.6
-40
-15
10
35
60
85
TEMPERATURE (°C)
_______________________________________________________________________________________
5
MAX4734
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
0
0.20
MAX4734 toc09
15
ON-RESPONSE
-15
0.16
OFF-ISOLATION
-30
V+ = 1.8V
VCOM = 1.2VP-P
0.14
THD (%)
CROSSTALK
-45
RL = 32Ω
0.18
-60
MAX4734 toc10
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
FREQUENCY RESPONSE
LOSS (dB)
MAX4734
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
0.12
0.10
0.08
-75
0.06
-90
0.04
-105
0.02
-120
V+ = 3.0V
VCOM = 2VP-P
0
0.1
0.01
1
10
100
1000
10
FREQUENCY (MHz)
100
1k
10k
100k
FREQUENCY (Hz)
Pin Description
PIN
6
NAME
FUNCTION
µMAX
QFN
1
12
A0
2
1
NO1
Analog Switch 1—Normally Open Terminal
3
2
GND
Ground
4
3
NO3
5
4
EN
Enable Logic Input
6
6
V+
Positive-Supply Voltage Input
7
7
NO4
8
8
COM
Analog Switch Common Terminal
9
9
NO2
Analog Switch 2—Normally Open Terminal
10
10
A1
Address 1 Input
—
5, 11
N.C.
No Connection
Address 0 Input
Analog Switch 3—Normally Open Terminal
Analog Switch 4—Normally Open Terminal
_______________________________________________________________________________________
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
The MAX4734 is a low 0.8Ω max (at V+ = 2.7V) onresistance, low-voltage, 4-channel CMOS analog multiplexer that operates from a 1.6V to 3.6V single supply.
CMOS switch construction allows switching analog signals that range from GND to V+.
When powered from a 2.7V supply, the 0.8Ω max RON
allows high continuous currents to be switched in a
variety of applications.
Applications Information
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings can cause permanent damage to the devices.
Always sequence V+ on first, followed by NO_ or COM.
Although it is not required, power-supply bypassing
improves noise margin and prevents switching noise
propagation from the V+ supply to other components.
A 0.1µF capacitor, connected from V+ to GND, is adequate for most applications.
The MAX4734 logic inputs can be driven up to 3.6V
regardless of the supply voltage. For example, with a
1.8V supply, A_ and EN may be driven low to GND and
high to 3.6V. Driving A_ and EN rail-to-rail minimizes
power consumption.
Analog Signal Levels
Analog signals that range over the entire supply voltage
(V+ to GND) can be passed with very little change in onresistance (see Typical Operating Characteristics). The
switches are bidirectional, so the NO_ and COM_ pins
can be used as either inputs or outputs.
Layout
High-speed switches require proper layout and design
procedures for optimum performance. Reduce stray
inductance and capacitance by keeping traces short
and wide. Ensure that bypass capacitors are as close
to the device as possible. Use large ground planes
where possible.
Test Circuits/Timing Diagrams
VEN = VIH + 0.5
V+
VEN
0
V+
EN
tR < 5ns
tF < 5ns
50%
NO1
VNO_
NO2–NO4
A0
V+
MAX4734
90% 90%
A1
COM
VOUT
GND
RL
VOUT
35pF
0
tON
tOFF
Figure 1. Switching Time
_______________________________________________________________________________________
7
MAX4734
Logic Inputs
Detailed Description
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
MAX4734
Test Circuits/Timing Diagrams (continued)
V+
VIH + 0.5V
VEN
V+
EN
LOGIC
INPUT
VA_
VNO_
NO1–NO4
MAX4734
tR < 5ns
tF < 5ns
50%
0
VNO_
A0
VA
VIH + 0.5V
90%
A1
COM
SWITCH
OUTPUT
VOUT
VOUT
GND
35pF
tBBM
0
RL
Figure 2. Break-Before-Make Interval
V+
RS
V+
NO
VEN
VS
CHANNEL
SELECT
EN
A0
MAX4734
COM
VOUT
A1
CL = 5nF
GND
VIH + 0.5V
LOGIC
INPUT
0
VEN
OFF
ON
OFF
∆VOUT
VOUT
∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = ∆VOUT x CL
Figure 3. Charge Injection
V+
V+
A1
CHANNEL
SELECT
NO1
MAX4734
A0
GND
NO4
1MHz
CAPACITANCE
ANALYZER
COM
EN
f = 1MHz
VIH
OR
VIL
Figure 4. Channel Off/On-Capacitance
8
_______________________________________________________________________________________
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
V+ 10nF
V+
EN
VIN
V+
NO
MAX4734
V+
A
NETWORK
ANALYZER
50Ω
50Ω
VOUT
MEAS
REF
OFF-ISOLATION = 20log
VOUT
VREF
ON-LOSS = 20log
VOUT
VREF
V
CROSSTALK = 20log OUT
VREF
COM
GND
50Ω
50Ω
NOTES: MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT SOCKET TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM AND “OFF” TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM AND “ON” TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED BETWEEN ADJACENT CHANNELS WITH ONE CHANNEL
ON AND THE OTHER OFF.
Figure 5. Off-Isolation/On-Channel/Crosstalk Bandwidth
Chip Information
TRANSISTOR COUNT: 379
PROCESS: CMOS
_______________________________________________________________________________________
9
MAX4734
Test Circuits/Timing Diagrams (continued)
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.)
32L QFN, 3x3x0.85.EPS
MAX4734
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
10
______________________________________________________________________________________
0.8Ω, Low-Voltage, 4-Channel
Analog Multiplexer
10LUMAX.EPS
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11
© 2002 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
MAX4734
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.)
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