MAX4644EUT+TG002

19-1657; Rev 1; 1/11 High-Speed, Low-Voltage, 4Ω, SPDT CMOS Analog Switch Features The MAX4644 is a single-pole/double-throw (SPDT) switch that operates from a single supply ranging from +1.8V to +5.5V. It provides low 4Ω on-resistance (RON) as well as 1Ω RON flatness over the entire analog-signal range. The MAX4644 offers fast switching times of less than 20ns while ensuring break-before-make operation. It typically consumes only 0.01μW of quiescent power, making it suitable for use in low-power, portable applications. The MAX4644’s features include low leakage currents over the entire temperature range, TTL/CMOS-compatible digital logic, and excellent AC characteristics. It is packaged in either a small 8-pin μMAX® or a tiny 6-pin SOT23. ♦ +1.8V to +5.5V Single-Supply Operation ♦ Rail-to-Rail Analog-Signal Range ♦ Guaranteed RON 4Ω max (+5V Supply) 8Ω max (+3V Supply) ♦ +1.8V Operation RON 30Ω (typ) Over Temperature tON 18ns (typ), tOFF 12ns typ ♦ Guaranteed RON Flatness: 0.75Ω (typ) (+5V Supply) ♦ Guaranteed RON Match Between Channels: 0.1Ω typ (+5V Supply) ♦ Low Leakage (< 0.35nA) Over Entire Temperature Range ♦ Excellent AC Characteristics Low Crosstalk: -82dB at 1MHz High Off-Isolation: -80dB at 1MHz 0.018% Total Harmonic Distortion ♦ Low Power Consumption: < 0.01µW Applications Battery-Operated Equipment Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Sample-and-Hold Circuits Ordering Information Communications Circuits ËMAX is a registered trademark of Maxim Integrated PART TEMP. RANGE PINPACKAGE TOP MARK MAX4644EUT+T -40°C to +85°C 6 SOT23 AAHQ MAX4644EUA+T -40°C to +85°C 8 μMAX +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. Products, Inc. — Pin Configurations/Functional Diagrams/Truth Table TOP VIEW MAX4644 MAX4644 IN 1 6 NO V+ 2 5 COM GND 3 4 NC COM 1 8 NO NC 2 7 N.C. GND 3 6 IN V+ 4 5 N.C. SOT23-6 μMAX MAX4644 IN NC NO 0 ON OFF 1 OFF ON ________________________________________________________________ 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 MAX4644 General Description MAX4644 High-Speed, Low-Voltage, 4Ω, SPDT CMOS Analog Switch ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) V+ .............................................................................-0.3V to +6V IN, COM, NO, NC (Note 1) ...........................-0.3V to (V+ + 0.3V) Continuous Current (any terminal)....................................±20mA Continuous Current (NO, NC, and COM) .........................±50mA Peak Current (NO, NC, and COM, pulsed at 1ms, 10% duty cycle)......................................................... ±100mA Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23 (derate 8.70mW/°C above +70°C)........ 696mW 8-Pin μMAX (derate 4.5mW/°C above +70°C) ........... 362mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................ +300°C Soldering Temperature (reflow) ...................................... +260°C Note 1: Signals on NO, NC, COM, or IN 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, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog-Signal Range On-Resistance VCOM, VNO, VNC RON On-Resistance Match Between Channels (Note 2) ΔRON On-Resistance Flatness (Note 3) RFLAT 0 V+ = 4.5V, ICOM = 10mA, VNO or VNC = 0 to V+ TA = +25°C V+ = 4.5V, ICOM = 10mA, VNO or VNC = 0 to V+ TA = +25°C V+ = 4.5V, ICOM = 10mA, VNO or VNC = 0 to V+ TA = +25°C 2.5 4 Ω TA = TMIN to TMAX 4.75 0.1 Ω TA = TMIN to TMAX 0.4 0.75 1 Ω TA = TMIN to TMAX 1.2 NO, NC Off-Leakage Current (Note 4) INO(OFF), INC(OFF) V+ = 5.5V, VCOM = 1V or 4.5V, VNO or VNC = 4.5V or 1V TA = +25°C -0.25 TA = TMIN to TMAX -0.35 COM Off-Leakage Current (Note 4) V+ = 5.5V, VCOM = 1V or 4.5V, VNO or VNC = 4.5V or 1V TA = +25°C -0.25 ICOM(OFF) TA = TMIN to TMAX -0.35 COM On-Leakage Current (Notes 4, 5) ICOM(ON) V+ = 5.5V, VCOM = 1V or 4.5V TA = +25°C -0.25 TA = TMIN to TMAX -0.35 0.01 0.25 nA 0.35 0.01 0.25 nA 0.35 0.01 0.25 0.35 nA DIGITAL INPUTS INPUTS Input-Logic High VIH Input-Logic Low VIL Input Current IIN 2 2.4 VIN = 0.8V or 2.4V -0.1 V 0.005 _______________________________________________________________________________________ 0.8 V 0.1 μA High-Speed, Low-Voltage, 4Ω, SPDT CMOS Analog Switch (V+ = +4.5V to +5.5V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX 11 15 UNITS DYNAMIC Turn-On Time (Note 4) Turn-Off Time (Note 4) Break-Before-Make (Note 4) Charge Injection tON tOFF tBBM Q RL = 300Ω; CL = 35pF; VNO, VNC = 3V; Figure 2 TA = +25°C RL = 300Ω; CL = 35pF; VNO, VNC = 3V; Figure 2 TA = +25°C RL = 300Ω; CL = 35pF; VNO or VNC = +3V; Figure 2 TA = +25°C ns TA = TMIN to TMAX 18 3 5 ns TA = TMIN to TMAX 6 8 ns TA = TMIN to TMAX 1 VGEN = 0V, RGEN = 0V, CL = 1nF, Figure 4 5 pC NO or NC = GND, f = 1MHz, Figure 5 12 pF 34 pF NO, NC Off-Capacitance CNO(OFF), CNC(OFF) Switch On-Capacitance C(ON) f = 1MHz, Figure 5 Off-Isolation (Note 6) VISO CL = 5pF, RL = 50Ω, Figure 3 f = 10MHz -55 f = 1MHz -80 Crosstalk (Note 7) VCT CL = 5pF, RL = 50Ω, Figure 3 f = 10MHz -62 f = 1MHz -82 Total Harmonic Distortion THD RL = 600Ω, 0.5Vp-p, f = 20Hz to 20kHz 0.018 V+ = 5.5V, VIN = 0V or V+ 0.001 dB dB % SUPPLY Positive Supply Current I+ 1.0 μA ELECTRICAL CHARACTERISTICS—Single +3V Supply (V+ = +2.7V to +3.3V, VINH = 2.0V, VINL = 0.4V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog-Signal Range On-Resistance VCOM, VNO, VNC RON On-Resistance Match Between Channels (Note 2) ΔRON On-Resistance Flatness (Note 3) RFLAT 0 V+ = 2.7V, ICOM = 10mA, VNO or VNC = 0 to V+ TA = +25°C V+ = 2.7V, ICOM = 10mA, VNO or VNC = 0 to V+ TA = +25°C V+ = 2.7V, ICOM = 10mA, VNO or VNC = 0 to V+ TA = +25°C 6 Ω TA = TMIN to TMAX 9 0.1 Ω TA = TMIN to TMAX TA = TMIN to TMAX 8 0.4 1.5 3 Ω 3.5 _______________________________________________________________________________________ 3 MAX4644 ELECTRICAL CHARACTERISTICS —Single +5V Supply (continued) MAX4644 High-Speed, Low-Voltage, 4Ω, SPDT CMOS Analog Switch ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued) (V+ = +2.7V to +3.3V, VINH = 2.0V, VINL = 0.4V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DIGITAL INPUTS Input-Logic High VIH Input-Logic Low VIL 2.0 Input Current IIN VIN = 0.4V or 2.0V RL = 300Ω; CL = 35pF; VNO, VNC = 2V; Figure 2 TA = +25°C tON RL = 300Ω; CL = 35pF; VNO, VNC = 2V; Figure 2 TA = +25°C RL = 300Ω; CL = 35pF; VNO, VNC = 2V; Figure 2 TA = +25°C -0.1 V 0.4 V 0.005 0.1 μA 14 20 DYNAMIC Turn-On Time (Note 4) Turn-Off Time (Note 4) Break-Before-Make (Note 4) Charge Injection tOFF tBBM Q ns TA = TMIN to TMAX 22 4 7.5 ns TA = TMIN to TMAX 8 8 ns TA = TMIN to TMAX 1 VGEN = 0V, RGEN = 0V, CL = 1nF, Figure 4 5 pC NO or NC = GND, f = 1MHz, Figure 5 12 pF 34 pF NO, NC Off-Capacitance CNO(OFF), CNC(OFF) Switch On-Capacitance C(ON) f = 1MHz, Figure 5 Off-Isolation (Note 6) VISO CL = 5pF, RL = 50Ω, Figure 3 f = 10MHz -55 f = 1MHz -80 Crosstalk (Note 7) VCT CL = 5pF, RL = 50Ω, Figure 3 f = 10MHz -62 f = 1MHz -82 dB dB SUPPLY Positive Supply Current I+ V+ = 3.3V, VIN = 0V or V+ 0.001 1.0 μA Note 2: ΔRON = RON(MAX) - RON(MIN). Note 3: RON flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog-signal range. Note 4: Guaranteed by design. Note 5: On-Leakage performed with voltage applied to COM, with NO and NC left unconnected. Note 6: Off-Isolation = 20log10 (VO / VI), where VO is VCOM and VI is either VNC or VNO from the network analyzer. Note 7: Crosstalk is measured between the two switches. 4 _______________________________________________________________________________________ High-Speed, Low-Voltage, 4Ω, SPDT CMOS Analog Switch ICOM = 10mA 4 15 V+ = 3V LEAKAGE (pA) RON (Ω) 3 V+ = 2.5V 2 V+ = 5V ON-LEAKAGE 1 1 0 2 3 4 -40 5 -15 10 35 60 -40 85 -15 10 35 60 VCOM (V) TEMPERATURE (°C) TEMPERATURE (°C) CHARGE INJECTION vs. VCOM SUPPLY CURRENT vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. TEMPERATURE 140 100 80 60 40 IN = GND 120 SUPPLY CURRENT (nA) 120 20 300 100 80 60 40 85 IN = GND 250 SUPPLY CURRENT (nA) V+ = 5V MAX4644-05 140 1 MAX4644-04 0 CHARGE INJECTION (pC) 10 V+ = 5V V+ = 3V 5 OFF-LEAKAGE 100 MAX4644-06 RON (Ω) V+ = 1.8V 10 1000 MAX4644-03 ICOM = 10mA MAX4644-02 5 MAX4644-01 20 ON-/OFF-LEAKAGE CURRENT vs. TEMPERATURE ON-RESISTANCE vs. TEMPERATURE ON-RESISTANCE vs. VCOM 200 V+ = 5V 150 100 V+ = 3V V+ = 1.8V 50 20 IN = V+ 0 0 1 2 3 4 5 0 1.8 VCOM (V) LOGIC THRESHOLD vs. SUPPLY VOLTAGE 2.8 3.8 4.8 SUPPLY VOLTAGE (V) -40 5.8 0.5 9 tON 6 tOFF 2.6 3.4 4.2 SUPPLY VOLTAGE (V) 5.0 5.8 V+ = 5V tON 6 tOFF 4 0 0 1.8 85 2 3 0 60 8 SWITCHING TIMES (ns) SWITCHING TIMES (ns) LOGIC THRESHOLD (V) 1.0 35 SWITCHING TIMES vs. TEMPERATURE 10 MAX4644-08 MAX4644-07 15 12 1.5 10 TEMPERATURE (°C) SWITCHING TIMES vs. SUPPLY VOLTAGE 2.0 -15 MAX4644-09 0 2 3 4 SUPPLY VOLTAGE (V) 5 -40 -15 10 35 60 85 TEMPERATURE (°C) _______________________________________________________________________________________ 5 MAX4644 Typical Operating Characteristics (V+ = +5V or +3V, VINH = V+, INL = GND, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (V+ = +5V or +3V, VINH = V+, INL = GND, TA = +25°C, unless otherwise noted.) V+ = 5V ON-LOSS -20 0.05 MAX4644-10 0 -10 MAX4644-11 TOTAL HARMONIC DISTORTION vs. FREQUENCY FREQUENCY RESPONSE V+ = 5V 0.04 OFF-ISOLATION THD (%) -30 (dB/div) MAX4644 High-Speed, Low-Voltage, 4Ω, SPDT CMOS Analog Switch -40 -50 0.03 0.02 -60 -70 0.01 -80 0 0.01 -90 0.01 0.1 1 10 100 1000 0.1 1 10 100 FREQUENCY (kHz) FREQUENCY (MHz) Pin Description MAX4644 NAME FUNCTION SOT23 µMAX 1 6 IN Logic-Controlled Input 2 4 V+ Positive Supply Voltage Input. Bypass with a 0.1μF capacitor to GND. 3 3 GND Ground — 5, 7 N.C. No Connection. Not internally connected. 4 2 NC Analog-Switch Normally Closed Terminal 5 1 COM 6 8 NO Analog-Switch Common Terminal Analog-Switch Normally Open Terminal Note: The switches are bidirectional, which means that a signal can be passed through either side of the on switch. However, the typical off-capacitances differ as shown in the Electrical Characteristics. 6 _______________________________________________________________________________________ High-Speed, Low-Voltage, 4Ω, SPDT CMOS Analog Switch COM N0, NC GND Figure 1. Overvoltage Protection Using External Blocking Diodes Applications Information The MAX4644 operates from a single supply ranging from +1.8V to +5.5V. The device is guaranteed to be functional over that supply range, but TTL/CMOS compatibility is only valid for operation using a +5V supply. All voltage levels are referenced to GND. Positive and negative DC analog inputs or AC signals can be accommodated by shifting V+ and GND. ESD-protection diodes are internally connected between each analog-signal pin and both V+ and GND. One of these diodes conducts if any analog signal exceeds V+ or GND (Figure 1). Virtually all of the analog leakage current comes from the ESD diodes to V+ Chip Information PROCESS: BiCMOS Package Information For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 6 SOT23 U6+4 21-0058 90-0175 8 μMAX U8+1 21-0036 90-0092 _______________________________________________________________________________________ 7 MAX4644 V+ or GND. Although the ESD diodes on a given signal pin are identical, and therefore fairly well balanced, they are reverse biased differently. Each is biased by either V+ or GND and the analog signal. This means their leakages will vary as the signal varies. The difference in the two diode leakages to the V+ and GND pins constitutes the analog-signal-path leakage current. All analog leakage current flows between each pin and one of the supply terminals, not to the other switch terminal. This is why both sides of a given switch can show leakage currents of the same or opposite polarity. There is no normal current path between the analogsignal paths and V+ or GND. V+ and GND also power the internal logic and logic-level translators. The logiclevel translators convert the logic level into switched V+ and GND signals to drive the analog signal gates. MAX4644 High-Speed, Low-Voltage, 4Ω, SPDT CMOS Analog Switch V+ V+ NO VNO NC IN 50% 0 VCOM COM 35pF 50Ω 50% IN MAX4644 VIN tr < 5ns tf < 5ns VIH + 0.5V OPEN VNO VCOM 300Ω GND 90% 90% 0 tON tOFF V+ VNC V+ NC NO VIH + 0.5V OPEN IN MAX4644 VIN IN VCOM COM 50Ω 50% 50% 0 300Ω GND 35pF VNC VCOM 0 90% 90% tON tOFF V+ VS V+ VNO VNC VIH + 0.5V IN 0 VS MAX4644 VIN IN COM VCOM 50% VS 50% 90% 90% VCOM 50Ω GND 300Ω 35pF 0 tBBM tBBM = tON(NC) - tOFF(NO) OR tBBM = tON(NO) - tOFF(NC) Figure 2. Switching Times 8 _______________________________________________________________________________________ tBBM High-Speed, Low-Voltage, 4Ω, SPDT CMOS Analog Switch MAX4644 V+ 0.1μF V+ VIN NO OR NC 50Ω MAX4644 VOUT NETWORK ANALYZER 50Ω 50Ω MEAS REF COM V+ IN 50Ω GND 50Ω V OFF-ISOLATION = 20log OUT VIN MEASUREMENTS ARE STANDARDIZED AGAINST SHORT 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. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. V ON-LOSS = 20log OUT VIN Figure 3. Off-Isolation and On-Loss V+ V+ V+ NO OR NC VNO OR VNC = 0V V+ NO OR NC MAX4644 VIN COM IN GND 50Ω VOUT CL 1000pF AS REQUIRED MAX4644 1MHz CAPACITANCE ANALYZER COM IN GND V+ VIN 0 Figure 5. NO, NC, and COM Capacitance 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 _______________________________________________________________________________________ 9 MAX4644 High-Speed, Low-Voltage, 4Ω, SPDT CMOS Analog Switch Revision History REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 3/00 Initial release — 1 1/11 Added lead-free parts to the Ordering Information table 1 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 © 2011 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.