19-2382; Rev 0; 4/02 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch Features 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® analog signals, and consumes less than 4µW of quiescent power. The MAX4736 has break-before-make switching. ♦ 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 and µMAX Packages When powered from a 3V supply, the MAX4736 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 MAX4736 has one normally open (NO) switch and one normally closed (NC) switch, and is available in 12pin QFN and 10-pin µMAX packages. Applications Power Routing Ordering Information Battery-Powered Systems TEMP RANGE PIN-PACKAGE Low-Voltage Data-Acquisition Systems MAX4736EUB PART -40°C to +85°C 10 µMAX Communications Circuits MAX4736EGC -40°C to +85°C 12 QFN Audio and Video Signal Routing PCMCIA Cards Cellular Phones Modems Hard Drives Pin Configurations/Functional Diagrams/Truth Table TOP VIEW IN1 12 COM1 N.C. 11 10 10 COM1 IN1 1 NO1 1 GND 2 NO2 3 MAX4736 4 5 6 IN2 COM2 N.C. 9 NC1 8 V+ 7 NC2 9 NC1 8 V+ 4 7 NC2 5 6 COM2 NO1 2 GND 3 NO2 IN2 MAX4736 IN_ 0 1 MAX4736 NO_ OFF ON NC_ ON OFF SWITCHES SHOWN FOR LOGIC 0 INPUT 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 MAX4736 General Description MAX4736 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch 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 = +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_, 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 = +25°C.) (Notes 2, 3) PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance (Note 4) On-Resistance Match Between Channels (Notes 4, 5) SYMBOL CONDITIONS VCOM_, VNO_, VNC_ RON ∆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 RFLAT(ON) NO_ or NC_ Off-Leakage Current (Note 10) INO_ (OFF), INC_ (OFF) V+ = 3.6V, VCOM_ = 0.3V, 3.3V; VNO_ or VNC_ = 3.3V, 0.3V ICOM_(ON) V+ = 3.6V, VCOM_ = 0.3V, 3.3V; VNO_ or VNC_ = 0.3V, 3.3V, or floating 2 MIN TYP 0 On-Resistance Flatness (Note 6) COM_ On-Leakage Current (Note 10) TA +25°C 0.6 MAX UNITS V+ V 0.8 Ω TMIN to TMAX 1 +25°C 0.1 TMIN to TMAX 0.3 +25°C 0.05 TMIN to TMAX 0.2 0.2 Ω 0.1 Ω +25°C -1 TMIN to TMAX -5 +25°C -2 ±0.002 +1 nA +5 ±0.002 +2 nA TMIN to TMAX -10 _______________________________________________________________________________________ +10 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch (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 7) Charge Injection tBBM Q NO_ or NC_ Off-Capacitance VNO_, VNC_ = 1.5V; RL = 50Ω, CL = 35pF, Figure 1 VNO_, VNC_ = 1.5V; RL = 50Ω, CL = 35pF, Figure 1 VNO_, VNC_ = 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 60 pF COM_ On-Capacitance CCOM(ON) f = 1MHz, Figure 4 +25°C 85 pF 130 MHz -3dB On-Channel Bandwidth BW Signal = 0, RIN = ROUT = 50Ω, CL = 5pF, Figure 5 Off-Isolation (Note 8) VISO f = 1MHz, VCOM_ = 1VP-P, RL = 50Ω, CL = 5pF, Figure 5 +25°C -52 dB Crosstalk (Note 9) VCT f = 1MHz, VCOM_ = 1VP-P, RL = 50Ω, CL = 5pF, Figure 5 +25°C -78 dB Total Harmonic Distortion THD f = 20Hz to 20kHz, VCOM_ = 2VP-P, RL = 32Ω +25°C 0.018 % LOGIC INPUT (A_, IN_) Input Logic High VIH Input Logic Low VIL Input Leakage Current IIN 1.4 VIN_ = 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, VIN_ = 0 or V+, all channels on or off 0.006 _______________________________________________________________________________________ 3 MAX4736 ELECTRICAL CHARACTERISTICS—Single 3V Supply (continued) MAX4736 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch 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_, VNC_ RON 0 ICOM_ = 10mA; VNO_ or VNC_ = 1V +25°C 1.5 TMIN to TMAX 2 3 Ω SWITCH DYNAMIC CHARACTERISTICS Turn-On Time Turn-Off Time Break-Before-Make (Note 7) Charge Injection tON tOFF tBBM Q VNO_ or VNC_ = 1V; RL = 50Ω, CL = 35pF, Figure 1 VNO_ or VNC_ = 1V; RL = 50Ω, CL = 35pF, Figure 1 VNO_ or VNC_ = 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 8) VISO f = 1MHz, VNO_ = VNC_ = 1VP-P, RL = 50Ω, CL = 5pF, Figure 5 +25°C -52 dB Crosstalk (Note 9) VCT f = 1MHz, VCOM_ = 1VP-P, RL = 50Ω, CL = 5pF, Figure 5 +25°C -78 dB LOGIC INPUT (IN_) Input Logic High VIH Input Logic Low VIL Input Leakage Current IIN 1 VIN_ = 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: 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 _______________________________________________________________________________________ 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch V+ = 1.8V V+ = 2.5V V+ = 1.8V, TA = +25°C 1.4 V+ = 1.8V, TA = +85°C V+ = 3.0V, TA = +85°C 1.2 1.0 0.6 0.5 MAX4736 toc03 1.6 10,000 0.8 V+ = 3.0V ON, V+ = 3.0V 1000 OFF, V+ = 3.0V 100 OFF, V+ = 1.8V ON, V+ = 1.8V 10 0.4 0.2 V+ = 3.6V 0 V+ = 3.0V, TA = -40°C V+ = 3.0V, TA = +25°C 1 0 0 1 2 3 4 0 1.0 1.5 2.0 -40 3.0 2.5 -15 10 35 60 VCOM (V) TEMPERATURE (°C) CHARGE INJECTION vs. VCOM SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE LOGIC-LEVEL THRESHOLD vs. SUPPLY VOLTAGE 30 V+ = 3.0V 20 V+ = 1.8V 10 1.1 1.0 TA = +25°C THRESHOLD (V) 40 TA = +85°C 1 TA = -40°C 0.1 85 MAX4736 toc06 100 SUPPLY CURRENT (nA) 50 1.2 MAX4736 toc05 1000 MAX4736 toc04 60 10 0.5 VCOM (V) 70 0.9 RISING 0.8 FALLING 0.01 0.7 0.001 0.6 0 -20 0.5 0.0001 0.5 1.0 2.0 1.5 2.5 3.0 VCOM (V) 2.0 1.6 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 0 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 TIMES vs. TEMPERATURE 30 MAX4736 toc07 tON, V+ = 1.8V 25 tON 20 tON/tOFF (ns) 0 MAX4736 toc08 -10 tON/tOFF (ns) Q (pC) V+ = 1.8V, TA = -40°C LEAKAGE CURRENT (pA) RON (Ω) RON (Ω) 1.5 1.8 MAX4736 toc02 V+ = 1.6V 1.0 2.0 MAX4736 toc01 2.5 2.0 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 MAX4736 Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) 0 0.10 MAX4736 toc09 15 ON-RESPONSE -15 RL = 32Ω 0.08 V+ = 1.8V VCOM = 1.2VP-P -30 THD (%) OFF-ISOLATION CROSSTALK -45 -60 MAX4736 toc10 TOTAL HARMONIC DISTORTION vs. FREQUENCY FREQUENCY RESPONSE LOSS (dB) MAX4736 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch 0.06 0.04 -75 -90 V+ = 3.0V VCOM = 2VP-P 0.02 -105 -120 0 0.1 0.01 1 10 100 1000 10 100 FREQUENCY (MHz) 1k 10k 100k FREQUENCY (Hz) Pin Description PIN 6 NAME FUNCTION µMAX QFN 1 12 IN1 Digital Control Input Switch 1 2 1 NO1 Analog Switch 1—Normally Open Terminal 3 2 GND Ground 4 3 NO2 Analog Switch 2—Normally Open Terminal 5 4 IN2 Digital Control Input Switch 2 6 5 COM2 7 7 NC2 8 8 V+ 9 9 NC1 10 11 COM1 — 6, 10 N.C. 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 _______________________________________________________________________________________ 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch The MAX4736 is a low 0.8Ω 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 0.8Ω 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; 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 0.1µF capacitor, connected from V+ to GND, is adequate for most 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. 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. 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+ LOGIC INPUT V+ NC_ or NO_ VIN t r < 5ns t f < 5ns VIN_ = VIH + 0.5V 50% 0 VOUT COM_ t OFF NO_ or NC_ RL IN_ LOGIC INPUT GND CL INCLUDES FIXTURE AND STRAY CAPACITANCE. CL VOUT SWITCH OUTPUT 0.9 ✕ V0UT 0.9 ✕ VOUT 0 t ON LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. Figure 1. Switching Time _______________________________________________________________________________________ 7 MAX4736 Detailed Description 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch MAX4736 Test Circuits/Timing Diagrams (continued) MAX4736 t r < 5ns t f < 5ns V+ VIH + 0.5V LOGIC INPUT V+ NC_ or NO_ VIN 50% 0 VOUT COM_ NO_ or NC_ CL RL IN_ LOGIC INPUT GND 0.9 ✕ VOUT VOUT tD CL INCLUDES FIXTURE AND STRAY CAPACITANCE. Figure 2. Break-Before-Make Interval MAX4736 V+ ∆VOUT V+ RGEN NC_ VOUT COM_ VOUT OR NO_ V GEN IN OFF CL GND ON OFF IN IN VINL TO VINH ON OFF OFF Q = (∆V OUT )(C L ) IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 3. Charge Injection 10nF Chip Information V+ TRANSISTOR COUNT: 379 V+ COM_ PROCESS: CMOS MAX4736 IN_ CAPACITANCE METER f = 1MHz NC_ OR NO_ VINL OR VINH GND Figure 4. Channel Off/On-Capacitance 8 _______________________________________________________________________________________ 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch 0 OR V+ IN_ NC_ V+ COM_ 50W VIN NETWORK ANALYZER V OFF-ISOLATION = 20log OUT VREF 50W MAX4736 50W NO GND VOUT MAX4736 V+ 10nF MEAS 50W REF ON-LOSS = 20log VOUT VREF CROSSTALK = 20log VOUT VREF 50W 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 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 MAX4736 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch 10 ______________________________________________________________________________________ 0.8Ω, Low-Voltage, Single-Supply, Dual SPDT Analog Switch 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. MAX4736 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.)