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.)