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19-2381; Rev 0; 4/02
0.8, Low-Voltage, 4-Channel Analog Multiplexer
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(R) analog signals, and consumes less than 4W of quiescent power. The MAX4734 has breakbefore-make switching. When powered from a 3V supply, the MAX4734 features low 0.8 (max) on-resistance (RON), with 0.2 (max) RON matching and 0.1 RON flatness. The digital logic input is 1.8V CMOS compatible when using a single 3V supply. The MAX4734 is available in space-saving 12-pin QFN (3mm x 3mm) and 10-pin MAX packages. o Low RON 0.8 (max) (3V Supply) 2 (max) (1.8V Supply) o 0.1 (max) RON Flatness (3V Supply) o 1.6V to 3.6V Single-Supply Operation o Available in QFN (3mm x 3mm) Package o High-Current Handling Capacity (150mA Continuous) o 1.8V CMOS-Logic Compatible (3V Supply) o Fast Switching: tON = 25ns, tOFF = 20ns
Features
MAX4734
Applications
Power Routing Battery-Powered Systems Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits PCMCIA Cards Cellular Phones Modems Hard Drives
PART MAX4734EUB MAX4734EGC
Ordering Information
TEMP RANGE -40C to +85C -40C to +85C PIN-PACKAGE 10 MAX 12 QFN (3mm x 3mm)
Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
MAX4734 A0 12 NO1 GND NO3 1 2 3 N.C. 11 A1 10 9 8 7 NO2 COM NO4 A0 1 NO1 GND NO3 EN 2 3 4 5
MAX4734
LOGIC 10 A1 9 8 7 6 NO2 COM NO4 V+ A1 A0 EN ON SWITCH X X0 NONE 1 0 0 1 1 0 1 2 1 1 0 3 1 1 1 4 X = DON'T CARE
4 EN
5 N.C.
6 V+
MAX
QFN
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. ________________________________________________________________ Maxim Integrated Products 1
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.
0.8, Low-Voltage, 4-Channel Analog Multiplexer MAX4734
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 = +70C) 10-Pin MAX (derate 5.6mW/C above +70C) ............444mW 12-Pin QFN (derate 14.7mW/C above +70C) ..........1176mW Operating Temperature Range ...........................-40C to +85C Maximum Junction Temperature .....................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
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 = +25C.) (Notes 2, 3)
PARAMETER ANALOG SWITCH Analog Signal Range VCOM, VNO_ V+ = 2.7V, ICOM = 100mA, VNO_ = 1.5V V+ = 2.7V, ICOM = 100mA, VNO_ = 1.5V V+ = 2.7V, ICOM_ = 100mA, VNO_ = 1V, 1.5V, 2V V+ = 3.6V, VCOM = 0.3V, 3.3V, VNO_ = 3.3V, 0.3V V+ = 3.6V, VCOM = 0.3V, 3.3V, VNO_ = 3.3V, 0.3V V+ = 3.6V, VCOM = 3.3V, 0.3V, VNO_ = 3.3V, 0.3V, or floating +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX -1 -5 -1 -5 -2 -10 0.002 0.002 0.002 0.05 0.1 0 0.6 V+ 0.8 1 0.2 0.3 0.1 0.2 +1 nA +5 +1 nA +5 +2 nA +10 V SYMBOL CONDITIONS TA MIN TYP MAX UNITS
On-Resistance (Note 4)
RON
On-Resistance Match Between Channels (Notes 4, 5) On-Resistance Flatness (Note 6)
RON
RFLAT(ON)
NO_ Off-Leakage Current (Note 7)
INO_(OFF)
COM Off-Leakage Current (Note 7)
ICOM(OFF)
COM On-Leakage Current (Note 7)
ICOM(ON)
2
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0.8, Low-Voltage, 4-Channel Analog Multiplexer
ELECTRICAL CHARACTERISTICS--Single 3V Supply (continued)
(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 = +25C.) (Notes 2, 3)
PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS
MAX4734
SWITCH DYNAMIC CHARACTERISTICS VNO_ = 1.5V, RL = 50, CL = 35pF, Figure 1 VNO_ = 1.5V, RL = 50, CL = 35pF, Figure 1 VNO_ = 1.5V, RL = 50, CL = 35pF, Figure 2 VGEN = 0, RGEN = 0, CL = 1.0nF, Figure 3 f = 1MHz, Figure 4 f = 1MHz, Figure 4 f = 1MHz, Figure 4 Signal = 0, RIN = ROUT = 50, CL = 5pF, Figure 5 f = 1MHz, VCOM = 1VP-P, RL = 50, CL = 5pF, Figure 5 f = 1MHz, VCOM = 1VP-P, RL = 50, CL = 5pF, Figure 5 f = 20Hz to 20kHz, VCOM = 2VP-P, RL = 32 +25C +25C +25C +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C +25C +25C +25C 1 60 33 117 171 90 -56 -56 0.018 pC pF pF pF MHz dB dB % 5 ns 15 20 25 ns 30 20 ns 25
Turn-On Time
tON
Turn-Off Time
tOFF
Break-Before-Make (Note 8)
tBBM
Charge Injection NO_ Off-Capacitance COM Off-Capacitance COM On-Capacitance -3dB On-Channel Bandwidth Off-Isolation (Note 9) Crosstalk (Note 10) Total Harmonic Distortion LOGIC INPUT (A_, EN) Input Logic High Input Logic Low Input Leakage Current POWER SUPPLY Power-Supply Range Positive Supply Current
Q COFF CCOM(OFF) CCOM(ON) BW VISO VCT THD
VIH VIL IIN VEN = 0 or 3.6V, VA_ = 0 or 3.6V
1.4 0.5 -1 0.005 +1
V V A
V+ I+ V+ = 3.6V, VEN, A_ = 0 or V+, all channels on or off
1.6 0.004
3.6 1
V A
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3
0.8, Low-Voltage, 4-Channel Analog Multiplexer MAX4734
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 = +25C.) (Notes 2, 3)
PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance VCOM, VNO_ RON ICOM_ = 10mA, VNO_ = 1V +25C TMIN to TMAX 0 1.5 V+ 2 3 V SYMBOL CONDITIONS TA MIN TYP MAX UNITS
SWITCH DYNAMIC CHARACTERISTICS Turn-On Time tON VNO_ = 1V, RL = 50, CL = 35pF, Figure 1 VNO_ = 1V, RL = 50, CL = 35pF, Figure 1 VNO_ = 1V, RL = 50, CL = 35pF, Figure 2 VGEN = 0, RGEN = 0, CL = 1nF, Figure 3 f = 1MHz, VNO_ = 1VP-P, RL = 50, CL = 5pF, Figure 5 f = 1MHz, VCOM = 1VP-P, RL = 50, CL = 5pF, Figure 5 +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C 1 35 pC 7 ns 18 25 30 ns 35 25 ns 28
Turn-Off Time
tOFF
Break-Before-Make (Note 8)
tBBM
Charge Injection
Q
Off-Isolation (Note 9)
VISO
+25C
-56
dB
Crosstalk (Note 10) LOGIC INPUT (A_, EN) Input Logic High Input Logic Low Input Leakage Current
VCT
+25C
-56
dB
VIH VIL IIN VEN = 0 or 3.6V, VA_ = 0 or 3.6V
1 0.4 1
V V A
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: -40C 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
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0.8, Low-Voltage, 4-Channel Analog Multiplexer
Typical Operating Characteristics
(TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM
MAX4734 toc01
MAX4734
ON-RESISTANCE vs. VCOM AND TEMPERATURE
V+ = 1.8V, TA = -40C 2.0 V+ = 1.8V, TA = +25C
MAX4734 toc02
ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE
MAX4734 toc03
3.0 2.5 2.0 RON () 1.5 V+ = 2.5V 1.0 0.5 V+ = 3.0V 0 0 V+ = 3.6V
2.5
10,000
LEAKAGE CURRENT (pA)
V+ = 1.6V V+ = 1.8V
1000
ON, V+ = 3.0V OFF, V+ = 3.0V
RON ()
1.5
V+ = 1.8V, TA = +85C V+ = 3.0V, TA = +85C
100 OFF, V+ = 1.8V ON, V+ = 1.8V 10
1.0
0.5 V+ = 3.0V, TA = -40C 0 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 3.0 V+ = 3.0V, TA = +25C 1 -40 -15 10 35 60 85 TEMPERATURE (C)
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 VCOM (V)
CHARGE INJECTION vs. VCOM
MAX4734 toc04
SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE
MAX4734 toc05
LOGIC-LEVEL THRESHOLD vs. SUPPLY VOLTAGE
MAX4734 toc06
70 60 50 40 Q (pC) 30 20 10 0 -10 -20 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 V+ = 1.8V V+ = 3.0V
1000 100 SUPPLY CURRENT (nA) 10 1 0.1 0.01 0.001 0.0001 TA = -40C TA = +85C TA = +25C
1.2 1.1 1.0 THRESHOLD (V) 0.9 0.8 0.7 0.6 0.5 RISING FALLING
3.0
0
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 SUPPLY VOLTAGE (V)
1.6
2.0
2.4
2.8
3.2
3.6
SUPPLY VOLTAGE (V)
TURN-ON/OFF TIME vs. SUPPLY VOLTAGE
MAX4734 toc07
TURN-ON/OFF TIME vs. TEMPERATURE
tON, V+ = 1.8V
MAX4734 toc08
30 25 tON tON/tOFF (ns) tOFF 15 10 5 0 1.6 2.0 2.4 2.8 3.2 20
30 25 20 15 10 5 0
tON/tOFF (ns)
tOFF, V+ = 1.8V tON, V+ = 3.0V tOFF, V+ = 3.0V
3.6
-40
-15
10
35
60
85
SUPPLY VOLTAGE (V)
TEMPERATURE (C)
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5
0.8, Low-Voltage, 4-Channel Analog Multiplexer MAX4734
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION vs. FREQUENCY
MAX4734 toc09
FREQUENCY RESPONSE
15 0 -15 -30 LOSS (dB) -45 -60 -75 -90 -105 -120 0.01 0.1 1 10 100 1000 FREQUENCY (MHz) OFF-ISOLATION THD (%) CROSSTALK ON-RESPONSE 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0 10
RL = 32
V+ = 1.8V VCOM = 1.2VP-P
V+ = 3.0V VCOM = 2VP-P 100 1k FREQUENCY (Hz) 10k 100k
Pin Description
PIN MAX 1 2 3 4 5 6 7 8 9 10 -- QFN 12 1 2 3 4 6 7 8 9 10 5, 11 NAME A0 NO1 GND NO3 EN V+ NO4 COM NO2 A1 N.C. Address 0 Input Analog Switch 1--Normally Open Terminal Ground Analog Switch 3--Normally Open Terminal Enable Logic Input Positive-Supply Voltage Input Analog Switch 4--Normally Open Terminal Analog Switch Common Terminal Analog Switch 2--Normally Open Terminal Address 1 Input No Connection FUNCTION
6
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MAX4734 toc10
0.8, Low-Voltage, 4-Channel Analog Multiplexer
Detailed Description
The MAX4734 is a low 0.8 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 0.8 max RON allows high continuous currents to be switched in a variety of applications.
Logic Inputs
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.
MAX4734
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.
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 0.1F capacitor, connected from V+ to GND, is adequate for most applications.
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
V+ VEN V+ NO1 NO2-NO4 VNO_ VEN = VIH + 0.5 0 tR < 5ns tF < 5ns
50%
EN
A0 A1
MAX4734
COM GND RL VOUT 35pF
V+ 90% 90% VOUT
0 tON
tOFF
Figure 1. Switching Time
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7
0.8, Low-Voltage, 4-Channel Analog Multiplexer MAX4734
Test Circuits/Timing Diagrams (continued)
V+ VEN V+ NO1-NO4 VNO_ LOGIC INPUT VA_ VIH + 0.5V 0 VNO_ 90% COM GND RL VOUT 35pF SWITCH OUTPUT VOUT 0 50%
VIH + 0.5V
EN
tR < 5ns tF < 5ns
MAX4734
A0 VA A1
tBBM
Figure 2. Break-Before-Make Interval
V+ RS NO VEN VS CHANNEL SELECT EN A0 A1 V+ VIH + 0.5V LOGIC INPUT 0 VEN OFF ON OFF
MAX4734
COM
VOUT
CL = 5nF GND
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+ NO1 NO4 COM f = 1MHz VIH OR VIL 1MHz CAPACITANCE ANALYZER
A1 CHANNEL SELECT A0
MAX4734
GND EN
Figure 4. Channel Off/On-Capacitance
8
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0.8, Low-Voltage, 4-Channel Analog Multiplexer
Test Circuits/Timing Diagrams (continued)
V+ 10nF NETWORK ANALYZER 50 50 OFF-ISOLATION = 20log VOUT VREF VOUT VREF
MAX4734
V+
EN
V+ NO
VIN
ON-LOSS = 20log
V+ A
MAX4734
COM GND
VOUT
MEAS
REF
V CROSSTALK = 20log OUT VREF
50
50
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
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9
0.8, Low-Voltage, 4-Channel Analog Multiplexer MAX4734
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
10
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0.8, Low-Voltage, 4-Channel Analog Multiplexer
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.)
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.
MAX4734
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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