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| 19-2382; Rev 0; 4/02 0.8, Low-Voltage, Single-Supply, Dual SPDT Analog Switch General Description The MAX4736 is a low on-resistance, low-voltage, dual single-pole/double throw (SPDT) analog switch 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 MAX4736 has break-before-make switching. When powered from a 3V supply, the MAX4736 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 MAX4736 has one normally open (NO) switch and one normally closed (NC) switch, and is available in 12pin QFN 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 and MAX Packages o High-Current Handling Capacity (150mA Continuous) o 1.8V CMOS Logic Compatible (3V Supply) o Fast Switching: tON = 25ns, tOFF = 20ns Features MAX4736 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 MAX4736EUB MAX4736EGC Ordering Information TEMP RANGE -40C to +85C -40C to +85C PIN-PACKAGE 10 MAX 12 QFN Pin Configurations/Functional Diagrams/Truth Table TOP VIEW IN1 COM1 N.C. 11 10 IN1 1 NO1 GND NO2 1 2 3 4 IN2 5 COM2 QFN 6 N.C. 9 8 7 NC1 V+ NC2 NO1 GND NO2 IN2 2 3 4 5 10 COM1 9 NC1 V+ NC2 COM2 IN_ 0 1 MAX4736 NO_ OFF ON NC_ ON OFF 12 MAX4736 MAX4736 8 7 6 SWITCHES SHOWN FOR LOGIC 0 INPUT MAX 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, Single-Supply, Dual SPDT Analog Switch MAX4736 ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) V+, IN_......................................................................-0.3V to +4V COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V) Continuous Current COM_, NO_, NC_ ...........................150mA Continuous Current (all other pins)...................................20mA Peak Current COM_, NO_, NC_ (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_, NO_, or NC_ 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 SYMBOL VCOM_, VNO_, VNC_ RON V+ = 2.7V, ICOM_ = 100mA; VNO_ or VNC_ = 1.5V V+ = 2.7V, ICOM_ = 100mA; VNO_ or VNC_ = 1.5V V+ = 2.7V, ICOM_ = 100mA; VNO_ or VNC_ = 1V, 1.5V, 2V V+ = 3.6V, VCOM_ = 0.3V, 3.3V; VNO_ or VNC_ = 3.3V, 0.3V V+ = 3.6V, VCOM_ = 0.3V, 3.3V; VNO_ or VNC_ = 0.3V, 3.3V, or floating +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX -1 -5 -2 -10 0.002 0.1 0.3 0.05 0.2 0.002 +1 nA +5 +2 nA +10 0.1 CONDITIONS TA MIN TYP MAX UNITS 0 V+ V 0.6 0.8 1 0.2 On-Resistance (Note 4) On-Resistance Match Between Channels (Notes 4, 5) On-Resistance Flatness (Note 6) NO_ or NC_ Off-Leakage Current (Note 10) RON RFLAT(ON) INO_ (OFF), INC_ (OFF) COM_ On-Leakage Current (Note 10) ICOM_(ON) 2 _______________________________________________________________________________________ 0.8, Low-Voltage, Single-Supply, Dual SPDT Analog Switch 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 VNO_, VNC_ = 1.5V; RL = 50, CL = 35pF, Figure 1 VNO_, VNC_ = 1.5V; RL = 50, CL = 35pF, Figure 1 VNO_, VNC_ = 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 TA MIN TYP MAX UNITS MAX4736 SWITCH DYNAMIC CHARACTERISTICS +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C +25C +25C +25C 1 60 33 60 85 130 -52 -78 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 7) tBBM Charge Injection NO_ or NC_ Off-Capacitance COM_ Off-Capacitance COM_ On-Capacitance -3dB On-Channel Bandwidth Off-Isolation (Note 8) Crosstalk (Note 9) Total Harmonic Distortion LOGIC INPUT (A_, IN_) 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 VIN_ = 0 or 3.6V 1.4 0.5 -1 +0.005 +1 V V A V+ I+ V+ = 3.6V, VIN_ = 0 or V+, all channels on or off 1.6 0.006 3.6 1 V A _______________________________________________________________________________________ 3 0.8, Low-Voltage, Single-Supply, Dual SPDT Analog Switch MAX4736 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 VCOM_, VNO_, VNC_ RON ICOM_ = 10mA; VNO_ or VNC_ = 1V +25C TMIN to TMAX 0 1.5 V+ 2 3 V SYMBOL CONDITIONS TA MIN TYP MAX UNITS On-Resistance SWITCH DYNAMIC CHARACTERISTICS Turn-On Time tON VNO_ or VNC_ = 1V; RL = 50, CL = 35pF, Figure 1 VNO_ or VNC_ = 1V; RL = 50, CL = 35pF, Figure 1 VNO_ or VNC_ = 1V; RL = 50, CL = 35pF, Figure 2 VGEN = 0, RGEN = 0, CL = 1nF, Figure 3 f = 1MHz, VNO_ = VNC_ = 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 7) tBBM Charge Injection Q Off-Isolation (Note 8) VISO +25C -52 dB Crosstalk (Note 9) LOGIC INPUT (IN_) Input Logic High Input Logic Low Input Leakage Current VCT +25C -78 dB VIH VIL IIN VIN_ = 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: Guaranteed by design. Note 8: Off-Isolation = 20log10(VCOM_/VNO_), VCOM_ = output, VNO_ = input to OFF switch. Note 9: Between two switches. Note 10: Leakage parameters are 100% tested at hot temperature and guaranteed by correlation at room. 4 _______________________________________________________________________________________ 0.8, Low-Voltage, Single-Supply, Dual SPDT Analog Switch MAX4736 Typical Operating Characteristics (TA = +25C, unless otherwise noted.) ON-RESISTANCE vs. VCOM MAX4736 toc01 ON-RESISTANCE vs. VCOM AND TEMPERATURE 1.8 1.6 1.4 V+ = 1.8V, TA = -40C V+ = 1.8V, TA = +25C V+ = 1.8V, TA = +85C V+ = 3.0V, TA = +85C MAX4736 toc02 ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE MAX4736 toc03 2.5 V+ = 1.6V 2.0 10,000 2.0 LEAKAGE CURRENT (pA) 1000 ON, V+ = 3.0V OFF, V+ = 3.0V RON () 1.0 V+ = 1.8V V+ = 2.5V V+ = 3.0V RON () 1.5 1.2 1.0 0.8 0.6 0.4 100 OFF, V+ = 1.8V ON, V+ = 1.8V 10 0.5 V+ = 3.6V 0 0 1 2 VCOM (V) 3 4 0.2 0 0 V+ = 3.0V, TA = -40C 0.5 1.0 V+ = 3.0V, TA = +25C 1 1.5 2.0 2.5 3.0 -40 -15 10 35 60 85 VCOM (V) TEMPERATURE (C) CHARGE INJECTION vs. VCOM MAX4736 toc04 SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE MAX4736 toc05 LOGIC-LEVEL THRESHOLD vs. SUPPLY VOLTAGE MAX4736 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 FALLING 0.7 0.6 0.5 RISING 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 MAX4736 toc07 TURN-ON/OFF TIMES vs. TEMPERATURE tON, V+ = 1.8V MAX4736 toc08 30 25 20 tOFF 15 10 5 0 1.6 2.0 2.4 2.8 3.2 tON 30 25 20 15 10 5 0 tON/tOFF (ns) 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) _______________________________________________________________________________________ 5 0.8, Low-Voltage, Single-Supply, Dual SPDT Analog Switch MAX4736 Typical Operating Characteristics (continued) (TA = +25C, unless otherwise noted.) TOTAL HARMONIC DISTORTION vs. FREQUENCY MAX4736 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) 0 10 0.02 OFF-ISOLATION CROSSTALK THD (%) 0.06 ON-RESPONSE 0.10 RL = 32 V+ = 1.8V VCOM = 1.2VP-P 0.08 0.04 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 5 7 8 9 11 6, 10 NAME IN1 NO1 GND NO2 IN2 COM2 NC2 V+ NC1 COM1 N.C. Digital Control Input Switch 1 Analog Switch 1--Normally Open Terminal Ground Analog Switch 2--Normally Open Terminal Digital Control Input Switch 2 Analog Switch 2--Common Terminal Analog Switch 2--Normally Closed Terminal Positive-Supply Voltage Input Analog Switch 1--Normally Closed Terminal Analog Switch 1--Common Terminal No Connection FUNCTION 6 _______________________________________________________________________________________ MAX4736 toc10 0.8, Low-Voltage, Single-Supply, Dual SPDT Analog Switch Detailed Description The MAX4736 is a low 0.8 max (at V+ = 2.7V) onresistance, low-voltage, dual SPDT analog switch 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 MAX4736 logic inputs can be driven up to 3.6V, regardless of the supply voltage. For example, with a 1.8V supply, IN_ can be driven low to GND and high to 3.6V. Driving IN_ rail-to-rail minimizes power consumption. MAX4736 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_, NC_, 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; stresses beyond the listed ratings can cause permanent damage to the devices. Always sequence V+ on first, followed by NO_, NC_, 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 MAX4736 V+ V+ VIN NC_ or NO_ COM_ NO_ or NC_ IN_ LOGIC INPUT GND RL CL SWITCH OUTPUT 0 t ON VOUT 0.9 V0UT VOUT t OFF 0.9 VOUT VIN_ = VIH + 0.5V LOGIC INPUT 50% 0 t r < 5ns t f < 5ns CL INCLUDES FIXTURE AND STRAY CAPACITANCE. LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. Figure 1. Switching Time _______________________________________________________________________________________ 7 0.8, Low-Voltage, Single-Supply, Dual SPDT Analog Switch MAX4736 Test Circuits/Timing Diagrams (continued) t r < 5ns t f < 5ns VIH + 0.5V LOGIC INPUT 0 COM_ NO_ or NC_ IN_ LOGIC INPUT GND VOUT tD CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL CL VOUT 50% MAX4736 V+ V+ VIN NC_ or NO_ 0.9 VOUT Figure 2. Break-Before-Make Interval MAX4736 V+ V+ RGEN NC_ OR NO_ COM_ CL GND IN OFF ON Q = (V OUT )(C L ) VOUT VOUT IN OFF ON VOUT OFF V GEN VINL TO VINH IN OFF IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 3. Charge Injection 10nF V+ Chip Information TRANSISTOR COUNT: 379 PROCESS: CMOS MAX4736 IN_ VINL OR VINH V+ COM_ CAPACITANCE METER f = 1MHz NC_ OR NO_ GND Figure 4. Channel Off/On-Capacitance 8 _______________________________________________________________________________________ 0.8, Low-Voltage, Single-Supply, Dual SPDT Analog Switch MAX4736 V+ 10nF NETWORK ANALYZER 0 OR V+ IN_ V+ COM_ VIN 509 509 V OFF-ISOLATION = 20log OUT VREF ON-LOSS = 20log VOUT VREF VOUT VREF NC_ 509 MAX4736 NO GND VOUT MEAS REF CROSSTALK = 20log 509 509 MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. Figure 5. On-Loss, Off-Isolation, and Crosstalk _______________________________________________________________________________________ 9 0.8, Low-Voltage, Single-Supply, Dual SPDT Analog Switch MAX4736 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 ______________________________________________________________________________________ 0.8, Low-Voltage, Single-Supply, Dual SPDT Analog Switch 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.) MAX4736 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 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. 10LUMAX.EPS |
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