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19-2240; Rev 0; 10/01 Low-Voltage, 60, 4:1 Analog Multiplexer in QFN General Description The MAX4704 low-voltage, 4-channel analog multiplexer operates from a single +1.8V to +5.5V supply. The MAX4704 features break-before-make switching action with a tON = 60ns and tOFF = 20ns at +3V. When powered from a +2.7V supply, the device has a 60 (max) on-resistance (RON), with 3 (max) RON matching and 5 max RON flatness. The digital logic inputs are 1.8V-logic compatible from a +2.7V to +3.3V supply. The MAX4704 is available in both a space-saving 12-pin QFN (3mm x 3mm) package and a 10-pin MAX package. o 3mm x 3mm 12-Pin QFN Package o Guaranteed On-Resistance: 60 (max) (+2.7V supply) 40 (max) (+5V supply) o Guaranteed Match Between Channels: 3 (max) o Guaranteed Flatness Over Signal Range: 5 (max) o Guaranteed Low Leakage Currents: 100pA (max) at +25C o Switching Time: tON = 60ns, tOFF = 20ns o +1.8V to +5.5V Single-Supply Operation o Rail-to-Rail(R) Signal Handling o -3dB Bandwidth: >200MHz o Low Crosstalk: -90dB (1MHz) o High Off-Isolation: -85dB (1MHz) o Low 3pC Charge Injection o THD: 0.02% o +1.8V CMOS-Logic Compatible Features MAX4704 Applications MP3 Players Battery-Operated Equipment Relay Replacement Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits PCMCIA Cards Cellular Phones Modems Ordering Information PART TEMP. RANGE -40C to +85C -40C to +85C PIN-PACKAGE 12 QFN 10 MAX Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. MAX4704EGC MAX4704EUB Pin Configurations TOP VIEW MAX4704 NO2 1 NO3 NO1 INH GND 2 3 4 5 LOGIC 10 V+ 9 8 7 6 COM NO0 ADDA ADDB INH 1 0 0 0 0 ADDB X 0 0 1 1 ADDA ON SWITCH X 0 1 0 1 NONE COM-NO0 COM-NO1 COM-NO2 COM-NO3 4 NO3 5 NO1 6 INH NO2 3 V+ N.C. 1 2 LOGIC 9 8 7 ADDB N.C. GND 12 MAX4704 COM NO0 ADDA 11 10 MAX X = DON'T CARE N.C. = NO CONNECT QFN ________________________________________________________________ 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. Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704 ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) V+ .............................................................................-0.3V to +6V All Other Pins (Note 1)................................ -0.3V to (V+ + 0.3V) Continuous Current COM, NO_ ........................................20mA Peak Current COM, NO_ (pulsed at 1ms, 10% duty cycle)..................................40mA ESD per Method 3015.7.......................................................>2kV Continuous Power Dissipation (TA = +70C) 10-Pin MAX (derate 4.7mW/C above +70C) ......... 330mW 12-Pin QFN (derate 11.9mW/C above +70C) ......... 952mW Operating Temperature Range .......................... -40C to +85C Storage Temperature Range ............................ -65C to +150C Lead Temperature (soldering, 10s) ................................ +300C Note 1: Signals on INH, ADD_, NO_, and COM exceeding V+ or GND are clamped by internal diodes. Limit forward-diode 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 +3.3V, VIH = +1.4V, VIL = +0.5V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +3V and TA = +25C.) (Notes 2, 3) PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) On-Resistance Flatness (Note 5) NO_ Off-Leakage Current (Note 6) COM On-Leakage Current (Note 6) COM Off-Leakage Current (Note 6) DYNAMIC Address Transition Time Inhibit Turn-On Time Inhibit Turn-Off Time Break-Before-Make Time (Note 7) Charge Injection tTRANS tON tOFF tBBM Q VNO_ = +1.5V, RL = 300, CL = 35pF, Figure 2 VNO_ = +1.5V, RL = 300, CL = 35pF, Figure 3 VNO_ = +1.5V, RL = 300, CL = 35pF, Figure 3 VNO_ = +1.5V, RL = 300, CL = 35pF, Figure 4 VGEN = 0, RGEN = 0, CL = 1.0nF, Figure 5 +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX 2 2 20 10 25 20 60 70 60 70 20 30 ns ns ns ns pC VCOM, VNO_ RON RON RFLAT (ON) INO_(OFF) V+ = +2.7V, ICOM = 5mA, VNO_ = +1.3V V+ = +2.7V, ICOM = 5mA, VNO_ = +1.3V V+ = +2.7V, ICOM = 5mA, VNO_ = +1V, +1.3V, +1.8V V+ = +3.3V, VCOM = +0.3V, +3V VNO_ = +3V, +0.3V V+ = +3.3V, VCOM = +0.3V, +3V VNO_ = +0.3V, +3V, or floating V+ = +3.3V, VCOM = +0.3V, +3V VNO_ = +3V, +0.3V +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX -0.1 -1 -0.5 -5 -0.5 -5 0.01 0.01 0.01 3 1 0 50 V+ 60 70 3 5 5 10 0.1 1 0.5 nA 5 0.5 5 nA V nA SYMBOL CONDITIONS TA MIN TYP MAX UNITS ICOM(ON) ICOM(OFF) 2 _______________________________________________________________________________________ Low-Voltage, 60, 4:1 Analog Multiplexer in QFN ELECTRICAL CHARACTERISTICS--Single +3V Supply (continued) (V+ = +2.7V to +3.3V, VIH = +1.4V, VIL = +0.5V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +3V and TA = +25C.) (Notes 2, 3) PARAMETER On-Channel -3dB Bandwidth Off-Isolation (Note 8) Crosstalk (Note 9) NO_ Off-Capacitance COM On-Capacitance COM Off-Capacitance DIGITAL I/O Input Logic High Input Logic Low Input Leakage Current SUPPLY Power-Supply Range Power-Supply Current V+ I+ V+ = +5.5V, ADD_, INH = 0 or V+ 1.8 5.5 1 V A VIH VIL IIH, IIL ADD_, INH = 0 or V+ -1 1.4 0.5 1 V V A SYMBOL BW VISO VCT CNO_(OFF) CCOM(ON) CCOM(OFF) CONDITIONS Signal = 0dBm, 50 in and out, Figure 6 f = 1MHz, RL = 50, CL = 5pF, Figure 6 f = 1MHz, RL = 50, CL = 5pF, Figure 6 f = 1MHz, VNO_ = GND, Figure 7 f = 1MHz, VNO_ = GND, Figure 7 f = 1MHz, VNO_ = GND, Figure 7 TA MIN TYP >200 -85 -90 7 19 15 MAX UNITS MHz dB dB pF pF pF MAX4704 ELECTRICAL CHARACTERISTICS--Single +5V Supply (V+ = +4.5V to +5.5V, VIH = +2.0V, VIL = +0.8V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +5V and TA = +25C.) (Notes 2, 3) PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) On-Resistance Flatness (Note 5) NO_ Off-Leakage Current (Note 6) COM On-Leakage Current (Note 6) VCOM, VNO_ RON RON RFLAT (ON) INO_(OFF) ICOM(ON) V+ = +4.5V, ICOM = 5mA, VNO_ = +3.5V V+ = +4.5V, ICOM = 5mA, VNO_ = +3.5V V+ = +4.5V, ICOM = 5mA, VNO_ = +1V, +2.25V, +3.5V V+ = +5.5V, VCOM = +0.5V, +5V VNO_ = +5V, +0.5V V+ = +5.5V, VCOM = +0.5V, +5V VNO_ = +0.5V, +5V, or floating +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX -0.1 -1 -0.5 -5 0.01 0.01 3 1 0 30 V+ 40 50 2 3 5 10 0.1 1 0.5 5 V nA nA SYMBOL CONDITIONS TA MIN TYP MAX UNITS _______________________________________________________________________________________ 3 Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704 ELECTRICAL CHARACTERISTICS--Single +5V Supply (continued) (V+ = +4.5V to +5.5V, VIH = +2.0V, VIL = +0.8V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +5V and TA = +25C.) (Notes 2, 3) PARAMETER COM Off-Leakage Current DYNAMIC Address Transition Time Inhibit Turn-On Time Inhibit Turn-Off Time Break-Before-Make Time (Note 7) Charge Injection On-Channel -3dB Bandwidth Off-Isolation (Note 8) Crosstalk (Note 9) Total Harmonic Distortion DIGITAL I/O Input Logic High Input Logic Low Input Leakage Current SUPPLY Power-Supply Range Positive Supply Current V+ I+ V+ = +5.5V, ADD_, INH = 0 or V+ 1.8 5.5 1 V A VIH VIL IIH, IIL ADD_, INH = 0 or V+ -1 2.0 0.8 1 V V A tTRANS tON tOFF tBBM Q BW VISO VCT THD VNO_ = +3V, RL = 300, CL = 35pF, Figure 2 VNO_ = +3V, RL = 300, CL = 35pF, Figure 3 VNO_ = +3V, RL = 300, CL = 35pF, Figure 3 VNO_ = +3V, RL = 300, CL = 35pF, Figure 4 VGEN = 0, RGEN = 0, CL = 1.0nF, Figure 5 Signal = 0dBm, 50 in and out, Figure 6 f = 1MHz, RL = 50, CL = 5pF, Figure 6 f = 1MHz, RL = 50, CL = 5pF, Figure 6 f = 20Hz to 20kHz, 1Vp-p, RL = 600 +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX 2 3 >200 -85 -90 0.02 20 9 18 15 35 40 35 40 20 30 ns ns ns ns pC MHz dB dB % SYMBOL ICOM(OFF) CONDITIONS V+ = +5.5V, VCOM_ = +0.5V, +5V VNO_ = +5V, +0.5V TA +25C TMIN to TMAX MIN -0.5 -5 TYP 0.01 MAX 0.5 5 UNITS nA Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in this data sheet. Note 3: -40C specifications are guaranteed by design. Note 4: RON = RON(MAX) - RON(MIN). Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note 6: Leakage currents are 100% tested at TA = +85C. Limits across the full temperature range are guaranteed by correlation. Note 7: Guaranteed by design. Note 8: Off-Isolation = 20log10 (VCOM / VNO_), VCOM = output, VNO_ = input to off switch. Note 9: Between any two switches. 4 _______________________________________________________________________________________ Low-Voltage, 60, 4:1 Analog Multiplexer in QFN Typical Operating Characteristics (TA = +25C, unless otherwise noted.) MAX4704 ON-RESISTANCE VS. VCOM MAX4704 toc01 ON-RESISTANCE VS. VCOM (V+ = 3V) MAX4704 toc02 ON-RESISTANCE VS. VCOM (V+ = 5V) MAX4704 toc03 90 80 70 60 V+ = 1.8V 40 35 30 RON () 25 20 15 10 TA = +85C TA = +25C TA = -40C 25 20 TA = +85C TA = +25C TA = -40C RON () 50 40 30 20 10 0 0 1 V+ = 2.5V V+ = 3.0V V+ = 5.0V RON () 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 3.0 15 10 5 5 0 2 3 4 5 VCOM (V) 0 0 1 2 3 4 5 VCOM (V) SUPPLY CURRENT VS. TEMPERATURE MAX4704 toc04 SUPPLY CURRENT VS. LOGIC INPUT VOLTAGE MAX4704 toc05 COM ON-LEAKAGE CURRENT vs. TEMPERATURE MAX4704 toc06 15 VINH = 0 12 SUPPLY CURRENT (nA) 1000 1000 SUPPLY CURRENT (A) COM ON-LEAKAGE (pA) 100 V+ = +5V 100 V+ = 5V V+ = 3V 10 9 10 V+ = +3V 6 V+ = +5V V+ = +3V 0 -40 -15 10 35 60 85 TEMPERATURE (C) 3 1 VADDB = 0 0.1 0 1 2 ADDA (V) 3 4 5 1 -40 -15 10 35 60 85 TEMPERATURE (C) COM OFF-LEAKAGE CURRENT vs. TEMPERATURE MAX4704 toc07 LOGIC THRESHOLD VS. SUPPLY VOLTAGE MAX4704 toc08 INHIBIT TURN-ON/OFF TIME vs. SUPPLY VOLTAGE MAX4704 toc09 1000 1.50 1.25 1.00 0.75 0.50 0.25 35 30 INHIBIT TIME (ns) 25 tON 20 15 10 5 COM OFF, V+ = 3V 100 COM OFF, V+ = 5V 10 LOGIC THRESHOLD ADD_ (V) COM OFF-LEAKAGE (pA) VIH VIL NO_ OFF, V+ = 5V tOFF NO_ OFF, V+ = 3V 1 -40 -15 10 35 60 85 TEMPERATURE (C) 0 0 1 2 V+ (V) 3 4 5 1 2 3 SUPPLY VOLTAGE (V) 4 5 _______________________________________________________________________________________ 5 Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704 Typical Operating Characteristics (continued) (TA = +25C, unless otherwise noted.) INHIBIT TURN-ON/OFF TIME vs. TEMPERATURE MAX4704 toc10 CHARGE INJECTION vs. VCOM MAX4704 toc11 FREQUENCY RESPONSE -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 LOSS (dB) ON-RESPONSE MAX4704 toc12 25 tON, V+ = 3V 20 tON, V+ = 5V INHIBIT TIME (ns) 10 9 8 7 Q (pC) 6 5 4 3 V+ = 5V 0 15 tOFF, V+ = 3V 10 OFF-ISOLATION CROSSTALK 5 tOFF, V+ = 5V 2 1 V+ = 3V 0 -40 -15 10 35 60 85 TEMPERATURE (C) 0 0 1 2 3 4 5 VCOM (V) 0.01 0.1 1 10 100 1000 FREQUENCY (MHz) THD vs. FREQUENCY V+ = 5V MAX4704 toc13 ADDRESS TRANSITION TIME vs. SUPPLY VOLTAGE MAX4704 toc14 ADDRESS TRANSITION TIME vs. TEMPERATURE MAX4704 toc15 0.04 30 ADDRESS TRANSITION TIME (ns) 25 tLH 20 15 tHL 10 5 0 25 ADDRESS TRANSITION TIME (ns) tLH, V+ = 3V 20 0.03 THD (%) 15 tLH, V+ = 5V tHL, V+ = 3V tHL, V+ = 5V 10 0.02 5 0.01 10 Vp-p = 1V RIN = ROUT = 600 100 1k FREQUENCY (Hz) 10k 100k 0 1 2 3 SUPPLY VOLTAGE (V) 4 5 -40 -15 10 35 60 85 TEMPERATURE (C) 6 _______________________________________________________________________________________ Low-Voltage, 60, 4:1 Analog Multiplexer in QFN Pin Description PIN MAX 10 -- 1 2 3 4 5 6 7 8 9 QFN 1 2, 8 3 4 5 6 7 9 10 11 12 NAME V+ N.C. NO2 NO3 NO1 INH GND ADDB ADDA NO0 COM Positive Supply Voltage No Connection. Not internally connected. Analog Switch 2. Normally open. Analog Switch 3. Normally open. Analog Switch 1. Normally open. Inhibit. Connect to GND for normal operation. Connect to logic-level high to turn all switches off. Ground Address Decoder Selection B Address Decoder Selection A Analog Switch 0. Normally open. Analog Switch Common Terminal FUNCTION MAX4704 Detailed Description The MAX4704 low-voltage, 4-channel analog multiplexer operates from a single +1.8V to +5.5V supply. When powered from a +2.7V supply, the device has a 60 (max) on-resistance (RON), with 3 (max) RON matching and 5 (max) RON flatness. The digital logic inputs are +1.8V-logic compatible from a +2.7V to +3.3V supply. analog signal can dip below GND, add D2. Adding protection diodes reduces the analog range to a diode drop (about 0.7V) below V+ (for D1), and a diode drop above ground (for D2). On-resistance increases slightly at low supply voltages. Maximum supply voltage (V+) must not exceed +6V. Adding protection diode D2 causes the logic threshold to be shifted relative to GND. TTL compatibility is not guaranteed when D2 is added. Protection diodes D1 and D2 also protect against some overvoltage situations. In the circuit in Figure 1, if the supply voltage is below the absolute maximum rating, and if a fault voltage up to the absolute maximum rating is applied to an analog signal pin, no damage will result. Applications Information Digital Control Inputs The MAX4704 logic inputs are +1.8V CMOS logic compatible for 3V operation and TTL compatible for 5V operation of V+. Driving ADD_ rail-to-rail minimizes power consumption. Analog Signal Levels Analog signals that range over the entire supply voltage (V+ to GND) are passed with very little change in on-resistance (see Typical Operating Characteristics). The switches are bidirectional, so the NO_ and COM pins can be either inputs or outputs. POSITIVE SUPPLY D1 V+ MAX4704 Power-Supply Sequencing and Overvoltage Protection Caution: Do not exceed the absolute maximum ratings because stresses beyond those listed may cause permanent damage to devices. Proper power-supply sequencing is recommended for all CMOS devices. Always apply V+ before applying analog signals, especially if the analog signal is not current limited. If this sequencing is not possible, and if the analog inputs are not current limited to <20mA, add a small-signal diode (D1) as shown in Figure 1. If the Vg NO COM GND D2 Figure 1. Overvoltage Protection Using Two External Blocking Diodes 7 _______________________________________________________________________________________ Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704 Test Circuits/Timing Diagrams V+ V+ VADD V+ ADDA ADDB NO0 NO1-NO2 VNO_ VADD 0 VNO0 90% 90% VOUT 35pF 300 50% MAX4704 INH GND NO3 COM VOUT 0 tTRANS tTRANS Figure 2. Address Transition Time V+ V+ V+ ADDA ADDB NO0 NO1-NO3 VNO_ VINH 0 VNO0 90% COM GND 300 35pF VOUT 90% 50% MAX4704 VINH INH VOUT 0 tOFF tON Figure 3. Inhibit Switching Times V+ V+ VADD V+ ADDA ADDB VCOM 90% NO0-N03 VNO_ VADD 0 50% tR < 5ns tF < 5ns MAX4704 INH GND 300 COM 35pF VOUT VOUT 0 tBBM Figure 4. Break-Before-Make Interval 8 _______________________________________________________________________________________ Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704 Test Circuits/Timing Diagrams (continued) V+ V+ V+ NO_ CHANNEL SELECT ADDB ADDA VINH VNO = 0 VINH 0 MAX4704 VOUT VOUT INH GND COM VOUT CL 1000pF VOUT IS THE MEASURED VOLTAGE DUE TO CHARGETRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q = VOUT X CL REPEAT TEST FOR EACH SECTION. Figure 5. Charge Injection V+ 10nF NETWORK ANALYZER 50 50 V+ CHANNEL SELECT ADDA ADDB NO_ VIN OFF-ISOLATION = 20log VOUT VIN VOUT VIN VOUT VIN MAX4704 ON-LOSS = 20log VOUT INH GND COM MEAS. REF. CROSSTALK = 20log 50 50 MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM AND "OFF" NO TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM AND "ON" NO TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL (A, B) TO OTHER CHANNEL. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. Figure 6. Off-Isolation, On-Loss, and Crosstalk V+ Chip Information TRANSISTOR COUNT: 256 NO_ NO_ V+ CHANNEL SELECT ADDA ADDB PROCESS: CMOS MAX4704 INH GND COM 1MHz CAPACITANCE ANALYZER Figure 7. NO_/COM Capacitance _______________________________________________________________________________________ 9 Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704 Package Information 32L QFN, 3x3x0.85.EPS 10 ______________________________________________________________________________________ Low-Voltage, 60, 4:1 Analog Multiplexer in QFN Package Information (continued) 10LUMAX.EPS MAX4704 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) 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. |
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