19-1717; Rev 3; 2/09 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer Features ♦ Guaranteed RON 2.5Ω (typ) with 5V Supply 4.5Ω (typ) with 3V Supply The MAX4634 fast, low-voltage, 4-channel CMOS analog multiplexer features 4Ω (max) on-resistance (RON). It offers RON matching between switches to 0.3Ω (max) and RON flatness of 1Ω (max) over the specified signal range. Each switch can handle V+ to GND analog signals. Off-leakage current is only 0.1nA (max) at +25°C. The MAX4634 features fast turn-on (tON) and turn-off (tOFF) times of 18ns and 11ns, respectively. All this comes in the tiny 10-pin µMAX® and 10-pin, 3mm x 3mm, TDFN packages. ♦ 0.3Ω (max) Guaranteed RON Match Between Channels ♦ 1Ω (max) Guaranteed RON Flatness Over Signal Range ♦ 0.1nA (at +25°C) Guaranteed Low Leakage Currents This low-voltage multiplexer operates from a +1.8V to +5.5V single supply. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring TTL/CMOS-logic compatibility with +5V operation. ♦ +1.8V to +5.5V Single-Supply Operation ♦ +1.8V Operation RON = 30Ω (typ) Overtemperature tON = 30ns (typ), tOFF = 13ns (typ) ♦ V+ to GND Signal Handling ♦ TTL/CMOS-Logic Compatible ________________________Applications ♦ -78dB Crosstalk (at 1MHz) Battery-Operated Equipment ♦ -80dB Off-Isolation (at 1MHz) Audio and Video Signal Routing ♦ 0.018% Total Harmonic Distortion Low-Voltage Data-Acquisition Systems Sample-and-Hold Circuits Ordering Information Communications Circuits µMAX is a registered trademark of Maxim Integrated Products, Inc. PART TEMP RANGE PIN-PACKAGE MAX4634EUB -40°C to +85°C 10 µMAX MAX4634ETB -40°C to +85°C 10 TDFN-EP* (3mm x 3mm) TOP MARK — AAU *EP = Exposed pad. Pin Configurations/Functional Diagrams/Truth Table TOP VIEW MAX4634EUB A0 1 NO1 LOGIC 2 MAX4634ETB 10 A1 9 NO2 GND 3 8 COM NO3 4 7 NO4 EN 5 6 V+ µMAX A1 A0 EN ON SWITCH X X 0 NONE 0 0 1 1 0 1 1 2 1 0 1 3 1 1 X = DON'T CARE 1 4 A0 1 LOGIC 10 A1 NO1 2 9 NO2 GND 3 8 COM NO3 4 7 NO4 EN 5 6 V+ *EP TDFN *EP = EXPOSED PAD ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX4634 General Description MAX4634 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) V+ .............................................................................-0.3V to +6V A_, EN, COM, NO_ (Note 1) .........................-0.3V to (V+ + 0.3V) Continuous Current (all other pins) ..................................±20mA Continuous Current (COM, NO_) .....................................±50mA Peak Current (COM, NO_ pulsed at 1ms, 10% duty cycle) ........................................................±100mA Continuous Power Dissipation (TA = +70°C) 10-Pin µMAX (derate 4.1mW/°C above +70°C) ..........330mW 10-Pin TDFN (derate 24.4mW/°C above +70°C)............................................................1951mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range ............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................+300°C Note 1: Signals on NO_, COM, EN, or A_ 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 +5V Supply (V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +5V, TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Notes 4, 5) On-Resistance Flatness (Note 6) VCOM, VNO_ RON ΔRON 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) 0 V+ = 4.5V, ICOM = 10mA, VNO_ = 0 to V+ TA = +25°C V+ = 4.5V, ICOM = 10mA, VNO_ = 0 to V+ TA = +25°C V+ = 4.5V, ICOM = 10mA, VNO_ = 0 to V+ TA = +25°C V+ = 5.5V; VCOM = 1V, 4.5V; VNO_ = 4.5V, 1V TA = +25°C -0.1 TA = TMIN to TMAX -0.3 V+ = 5.5V; VCOM = 1V, 4.5V; VNO_ = 4.5V, 1V TA = +25°C -0.1 TA = TMIN to TMAX -0.65 V+ = 5.5V; VCOM = 1V, 4.5V; VNO_ = 1V, 4.5V, or unconnected TA = +25°C -0.1 TA = TMIN to TMAX -0.65 2.5 4 Ω TA = TMIN to TMAX 4.5 0.1 0.3 Ω TA = TMIN to TMAX 0.4 0.75 1 Ω TA = TMIN to TMAX 1.2 ±0.01 +0.1 nA +0.3 ±0.01 +0.1 nA +0.65 ±0.01 +0.1 nA +0.65 DIGITAL INPUTS I/O (A_, EN) Input Logic-High VIH Input Logic-Low VIL Input Logic Current 2 2.4 -100 V 5 _______________________________________________________________________________________ 0.8 V +100 nA Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer (V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +5V, TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX 14 18 UNITS DYNAMIC Turn-On Time (Note 7) Turn-Off Time (Note 7) Break-Before-Make Time (Note 7) Charge Injection tON tOFF tBBM Q VNO_ = 3V, RL = 300Ω, CL = 35pF, Figure 2 TA = +25°C VNO_ = 3V, RL = 300Ω, CL = 35pF, Figure 2 TA = +25°C VNO_ = 3V, RL = 300Ω, CL = 35pF, Figure 3 TA = +25°C ns TA = TMIN to TMAX 20 6 11 ns TA = TMIN to TMAX 13 8 ns TA = TMIN to TMAX 1 VGEN = 2V, RGEN = 0, CL = 5pF, Figure 4 2 Off-Isolation (Note 8) VISO CL = 5pF, RL = 50Ω, Figure 5 f = 10MHz -57 f = 1MHz -80 Crosstalk (Note 9) VCT CL = 5pF, RL = 50Ω, Figure 5 f = 10MHz -52 f = 1MHz -78 pC dB dB NO_ Off-Capacitance CNO_(OFF) Figure 6 13 pF COM Off-Capacitance CCOM(OFF) Figure 6 52 pF COM On-Capacitance CCOM(ON) CL = 5pF, Figure 6 68 pF 0.018 % Total Harmonic Distortion THD RL = 600Ω, f = 20Hz to 20kHz POWER SUPPLY Power-Supply Range V+ Positive Supply Current I+ 1.8 V+ = 5.5V, VIH = V+, VIL = 0 0.001 5.5 V 1.0 µA ELECTRICAL CHARACTERISTICS—Single +3V Supply (V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +3V, TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog Signal Range On-Resistance VCOM, VNO_ RON On-Resistance Match Between Channels (Notes 4, 5) ΔRON 0 V+ = 2.7V, ICOM = 10mA, VNO_ = 0 to V+ TA = +25°C V+ = 2.7V, ICOM = 10mA, VNO_ = 0 to V+ TA = +25°C 4.5 7 Ω TA = TMIN to TMAX 8 0.1 0.3 Ω TA = TMIN to TMAX 0.4 _______________________________________________________________________________________ 3 MAX4634 ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued) MAX4634 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued) (V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +3V, TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL 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) ICOM(ON) CONDITIONS MIN V+ = 2.7V, ICOM = 10mA, VNO_ = 0 to V+ TA = +25°C V+ = 3.3V; VCOM = 1V, 3V; VNO_ = 3V, 1V TA = +25°C -0.1 TA = TMIN to TMAX -0.3 V+ = 3.3V; VCOM = 1V, 3V; VNO_ = 3V, 1V TA = +25°C -0.1 TA = TMIN to TMAX -0.65 TA = +25°C -0.1 TA = TMIN to TMAX -0.65 V+ = 3.3V; VCOM = 1V, 3V; VNO_ = 1V, 3V, or unconnected TYP MAX 1.2 2.5 UNITS Ω TA = TMIN to TMAX 3 ±0.01 +0.1 nA +0.3 ±0.01 +0.1 nA +0.65 ±0.01 +0.1 nA +0.65 DIGITAL I/O (A_, EN) Input High VIH Input Low VIL 2.0 Input Logic Current -100 V 0.4 V 5 +100 nA 16 22 DYNAMIC Turn-On Time (Note 7) Turn-Off Time (Note 7) Break-Before-Make Time (Note 7) Charge Injection tON tOFF tBBM Q VNO_ = 2V, CL = 35pF, RL = 300Ω, Figure 2 TA = +25°C VNO_ = 2V, CL = 35pF, RL = 300Ω, Figure 2 TA = +25°C VNO_ = 2V, CL = 35pF, RL = 300Ω, Figure 3 TA = +25°C Off-Isolation (Note 8) VISO Crosstalk (Note 9) VCT CL = 5pF, RL = 50Ω, Figure 5 24 8 14 ns TA = TMIN to TMAX 16 9 ns TA = TMIN to TMAX VGEN = 1.5V, RGEN = 0, CL = 5pF, Figure 4 CL = 5pF, RL = 50Ω, Figure 5 4 ns TA = TMIN to TMAX 1 2 f = 10MHz -57 f = 1MHz -80 f = 10MHz -52 f = 1MHz -78 _______________________________________________________________________________________ pC dB dB Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer (V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +3V, TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL NO_ Off-Capacitance CNO_(OFF) VNO_ = GND, f = 1MHz, Figure 6 CONDITIONS MIN TYP 13 MAX UNITS pF COM Off-Capacitance CCOM(OFF) VCOM = GND, f = 1MHz, Figure 6 52 pF COM On-Capacitance C(ON) VCOM = VNO_ = GND, f = 1MHz, Figure 6 68 pF Total Harmonic Distortion THD RL = 600Ω, f = 20Hz to 20kHz 0.018 % V+ = 3.3V, VIH = V+, VIL = 0 0.001 POWER SUPPLY Positive Supply Current I+ 1 µA 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: TDFN parts are tested at +25°C and guaranteed by design and correlation over the entire temperature range. Note 4: ΔRON = RON(MAX) - RON(MIN). Note 5: RON and ΔRON matching specifications for TDFN-packaged parts are guaranteed by design. Note 6: Flatness is defined as the difference between the maximum and 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), where VCOM = output and VNO = input to off switch. Note 9: Between any two switches. Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) ON-RESISTANCE vs. VCOM AND TEMPERATURE (V+ = +3V) 4.0 MAX4634-02 5.0 MAX4634-01 20 ON-RESISTANCE vs. VCOM AND TEMPERATURE (V+ = +5V) TA = +85°C 4.5 3.5 4.0 3.0 15 MAX4634-03 ON-RESISTANCE vs. VCOM TA = +85°C 10 V+ = 2.5V RON (Ω) RON (Ω) RON (Ω) V+ = 1.8V 3.5 2.5 V+ = 3.0V V+ = 5.0V 5 3.0 2.0 TA = +25°C TA = -40°C TA = +25°C 2.5 0 0 1 2 VCOM (V) 3 4 5 TA = -40°C 1.5 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 3.0 0 1 3 2 VCOM (V) 4 _______________________________________________________________________________________ 5 5 MAX4634 ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued) Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE ON/OFF-ENABLE TIME vs. SUPPLY VOLTAGE CHARGE INJECTION vs. VCOM 0.10 30 25 Q (pC) 0.05 0 tON/tOFF (ns) ICOM(OFF) 1.5 V+ = 3V 1.0 INO_(OFF) 20 tON 15 10 ICOM(ON) -0.05 MAX4634-06 V+ = 5V 2.0 35 MAX4634-05 2.5 MAX4634-04 0.15 LEAKAGE (nA) tOFF 0.5 5 -0.10 0 0 -50 0 50 100 0 TEMPERATURE (°C) 1 3 2 VCOM (V) 4 2.5 3.0 3.5 0.4 I+, IGND (μA) tOFF MAX4634-08 0.5 MAX4634-07 6 0.3 0.2 4 0.1 2 0 0 -50 0 50 -50 100 0 TEMPERATURE (°C) LOGIC-LEVEL THRESHOLD vs. SUPPLY VOLTAGE 100 50 TEMPERATURE (°C) 150 FREQUENCY RESPONSE MAX4634-11 20 MAX4634-10 2.0 0 BANDWIDTH 1.5 LOSS (dB) -20 1.0 -40 -60 0.5 CROSSTALK -80 OFF-ISOLATION 0 -100 1.5 2.0 2.5 3.0 3.5 4.0 SUPPLY VOLTAGE (V) 6 4.5 5.0 4.0 SUPPLY VOLTAGE (V) tON 8 tON/tOFF (ns) 2.0 POWER-SUPPLY CURRENT vs. TEMPERATURE 12 10 1.5 5 ON/OFF-ENABLE TIME vs. TEMPERATURE LOGIC-LEVEL THRESHOLD (V) MAX4634 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer 0.01 0.1 1 10 100 FREQUENCY (MHz) _______________________________________________________________________________________ 1000 4.5 5.0 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer +5V D1 PIN µMAX/ TDFN NAME FUNCTION 1 A0 Address Input. See the Truth Table for details. 2 NO1 Normally Open Switch 1 3 GND Ground 4 NO3 Normally Open Switch 3 5 EN Enable Logic Input. See the Truth Table for details. V+ Positive Supply Voltage. Connect to an external power supply. Bypass to GND with a 10µF capacitor placed as close to the pin as possible. 6 7 NO4 Normally Open Switch 4 8 COM Analog Switch Common Terminal 9 NO2 Normally Open Switch 2 10 A1 Address Input. See the Truth Table for details. EP Exposed Pad. Internally connected to GND. Connect to a large PCB ground plane for proper operation. Not intended as an electrical connection point (TDFN package only). — MAX4634 Pin Description Detailed Description The MAX4634 is a low-on-resistance, low-voltage analog multiplexer that operates from a +1.8V to +5.5V single supply. CMOS switch construction allows processing of analog signals that are within the supply voltage range (GND to V+). To disable all switch channels, drive EN low. All four inputs and COM become high impedance during this state. If the disable feature is not needed, connect EN to V+. MAX4634 V+ * * * * NO COM D2 GND *INTERNAL PROTECTION DIODES Figure 1. Overvoltage Protection Using External Blocking Diodes Applications Information Power-Supply Sequencing and Overvoltage Protection Proper power-supply sequencing is recommended for all CMOS devices. Always apply V+ before applying analog signals or logic inputs, especially if the analog or logic signals are not current limited. If this sequencing is not possible, and if the analog or logic inputs are not current limited to < 20mA, add a small-signal diode (D1) as shown in Figure 1. If the analog signal can dip below GND, add D2. Adding protection diodes reduces the analog signal range to a diode drop (about 0.7V) below V+ for D1 or to a diode drop above ground for D2. The addition of diodes does not affect leakage. On-resistance increases by a small amount at low supply voltages. Maximum supply voltage (V+) must not exceed 6V. Protection diodes D1 and D2 also protect against some overvoltage situations. A fault voltage up to the absolute maximum rating at an analog signal input does not damage the device, even if the supply voltage is below the signal voltage. _______________________________________________________________________________________ 7 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer MAX4634 Test Circuits/Timing Diagrams VEN = VIH + 0.5 V+ VEN 0 V+ EN tR < 5ns tF < 5ns 50% NO1 V+ NO2–NO4 A0 VOUT MAX4634 90% 90% A1 COM VOUT GND 50Ω V+ 35pF 300Ω 0 tON tOFF Figure 2. Switching Time V+ VEN +2.4V V+ EN MAX4634 tR < 5ns tF < 5ns 50% 0 +5V A0 VA VIH + 0.5V LOGIC INPUT VA_ +10V NO1–NO4 90% A1 COM SWITCH OUTPUT VOUT VOUT GND 35pF tOPEN 0 300Ω 50Ω Figure 3. Break-Before-Make Interval +5V RS NO VEN VS CHANNEL SELECT V+ LOGIC INPUT VEN EN A0 MAX4634 A1 COM OFF ON OFF 0 VOUT CL = 5nF GND +3V ΔVOUT VOUT ΔVOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q = ΔVOUT x CL Figure 4. Charge Injection 8 _______________________________________________________________________________________ Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer V+ 10nF V+ VIN V+ EN OFF-ISOLATION = 20log VOUT VIN ON-LOSS = 20log VOUT VIN CROSSTALK = 20log VOUT VIN NO MAX4634 V+ NETWORK ANALYZER 50Ω 50Ω VOUT MEAS REF COM A 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 COMA AND COMB TERMINALS ON EACH DEVICE. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. Figure 5. Off-Isolation/On-Channel Bandwidth Chip Information PROCESS: CMOS +5V V+ A1 CHANNEL SELECT MAX4634 A0 GND EN NO1 NO4 1MHz CAPACITANCE ANALYZER COM f = 1MHz Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. PACKAGE TYPE Figure 6. Channel Off/On-Capacitance PACKAGE CODE DOCUMENT NO. 10 µMAX — 21-0061 10 TDFN T1033-1 21-0137 _______________________________________________________________________________________ 9 MAX4634 Test Circuits/Timing Diagrams (continued) MAX4634 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer Revision History PAGES CHANGED REVISION NUMBER REVISION DATE 0 4/00 Initial release 1 2/02 Added QFN package — 2 5/03 Added QFN packaging information — 3 2/09 Added TDFN package information (replaced QFN), style edits DESCRIPTION — 1, 7 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. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.