19-1656; Rev 1; 2/02 High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches Features The MAX4641 has two normally open (NO) switches, and the MAX4642 has two normally closed (NC) switches. The MAX4643 has one NO switch and one NC switch. All three devices have low 0.35nA leakage currents over the entire temperature range. The MAX4641/ MAX4642/MAX4643 are available in small 8-pin MAX and 8-pin QFN packages. Applications +1.8V to +5.5V Single-Supply Operation Rail-to-RailTM Analog Signal Range Guaranteed RON 4 max (+5V supply) 8 max (+3V supply) +1.8V Operation RON 30 typ Over Temperature tON 18ns typ, tOFF 12ns typ Guaranteed RON Flatness: 1 (+5V supply) Guaranteed RON Match Between Channels 0.6 (+5V supply) Low Leakage (<0.35nA) Over Entire Temperature Range Excellent AC Characteristics Low Crosstalk: -97dB at 1MHz High Off-Isolation: -80dB at 1MHz 0.018% Total Harmonic Distortion Low Power Consumption: < 0.01W Battery-Operated Equipment Ordering Information Audio and Video Signal Routing PART TEMP RANGE PIN-PACKAGE MAX4641EUA -40C to +85C 8 MAX MAX4641EGA -40C to +85C 8 QFN 3 x 3 MAX4642EUA -40C to +85C 8 MAX MAX4642EGA -40C to +85C 8 QFN 3 x 3 MAX4643EUA -40C to +85C 8 MAX MAX4643EGA -40C to +85C 8 QFN 3 x 3 Low-Voltage Data-Acquisition Systems Sample-and-Hold Circuits Communications Circuits Rail-to-Rail is a trademark of Nippon Motorola, Ltd. Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW MAX4641 MAX4642 MAX4643 NO1 1 8 V+ NC1 1 8 V+ NO1 1 8 V+ COM1 2 7 IN1 COM1 2 7 IN1 COM1 2 7 IN1 IN2 3 6 COM2 IN2 3 6 COM2 IN2 3 6 COM2 GND 4 5 NO2 GND 4 5 NC2 GND 4 5 NC2 MAX MAX MAX MAX4641 MAX4642 MAX4643 IN_ NO_ IN_ NC_ IN_ NO1 NC2 0 OFF 0 ON 0 OFF ON 1 ON 1 OFF 1 ON OFF Pin Configurations continued at end of data sheet. ________________________________________________________________ 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 MAX4641/MAX4642/MAX4643 General Description The MAX4641/MAX4642/MAX4643 are monolithic, dual, single-pole/single-throw (SPST) switches that can operate from a single supply ranging from +1.8V to +5.5V. The MAX4641/MAX4642/MAX4643 provide low 4 on-resistance (RON), 0.6 RON matching between channels, and 1 RON flatness over the entire analog signal range. These devices offer fast switching times of less than 20ns while consuming less than 0.01W of quiescent power. MAX4641/MAX4642/MAX4643 High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches 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_, COM_)...........................50mA Peak Current (NO_, NC_, COM_, pulsed at 1ms, 10% duty cycle)........................................................ 100mA Continuous Power Dissipation (TA = +70C) 8-Pin MAX (derate 4.5mW/C above +70C) ........... 362mW 8-Pin QFN (derate 24.4mW/C above +70C) ......... 1951mW Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) ................................ +300C 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 = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog Signal Range On-Resistance VCOM_, VNO_, VNC_ RON 0 V+ = 4.5V, ICOM_ = 10mA, VNO_ or VNC_= 0 to V+ TA = +25C V+ = 4.5V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ TA = +25C V+ = 4.5V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ TA = +25C 2.5 4 TA = TMIN to TMAX 5 On-Resistance Match Between Channels (Notes 2, 8) RON On-Resistance Flatness (Note 3) RFLAT 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 = +25C -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 = +25C -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 = +25C -0.25 TA = TMIN to TMAX -0.35 0.2 0.6 TA = TMIN to TMAX 0.8 0.85 1 TA = TMIN to TMAX 1.5 0.01 0.25 nA 0.35 0.01 0.25 nA 0.35 0.01 0.25 0.35 nA DIGITAL INPUTS INPUTS IN_ Input Logic High VIH IN_ Input Logic Low VIL IN_ Input Current IIN 2 2.4 VIN_ = 0.8V or 2.4V -0.1 V 0.005 _______________________________________________________________________________________ 0.8 V 0.1 A High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches (V+ = +4.5V to +5.5V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX 9 15 UNITS DYNAMIC Turn-On Time (Note 4) Turn-Off Time (Note 4) Break-Before-Make (Note 4) (MAX4643 only) Charge Injection tON tOFF tBBM RL = 300, CL = 35pF, VNO_ = VNC_ = 3V, Figure 2 TA = +25C RL = 300, CL = 35pF, VNO_ = VNC_ = 3V, Figure 2 TA = +25C RL = 300, CL = 35pF, VNO_ = VNC_ = 3V, Figure 2 ns TA = TMIN to TMAX 18 5 8 ns TA = TMIN to TMAX 10 TA = +25C 7 ns TA = TMIN to TMAX 1 Q VGEN = 0, RGEN = 0, CL = 1nF, Figure 4 2 pC NO_, NC_ Off-Capacitance CNO_ (OFF), CNC_ (OFF) NO_ or NC_ = GND, f = 1MHz, Figure 5 7 pF COM_ Off-Capacitance CCOM_ (OFF) f = 1MHz, Figure 5 7 pF Switch On-Capacitance C(ON) f = 1MHz, Figure 5 18 pF Off-Isolation (Note 6) VISO CL = 5pF, RL = 50, Figure 3 f = 10MHz -56 f = 1MHz -80 Crosstalk (Note 7) VCT CL = 5pF, RL = 50, Figure 3 f = 10MHz -77 f = 1MHz -97 Total Harmonic Distortion THD RL = 600, 0.5Vp-p, f = 20Hz to 20kHz 0.018 V+ = 5.5V, VIN_ = 0 or V+ 0.001 SUPPLY Positive Supply Current I+ dB dB % 1.0 A 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 = +25C.) 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 (Notes 2, 8) RON On-Resistance Flatness (Note 3) RFLAT 0 V+ = 2.7V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ TA = +25C V+ = 2.7V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ TA = +25C V+ = 2.7V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ TA = +25C 6 TA = TMIN to TMAX 9 0.2 0.6 TA = TMIN to TMAX TA = TMIN to TMAX 8 0.8 1.5 3.0 3.5 _______________________________________________________________________________________ 3 MAX4641/MAX4642/MAX4643 ELECTRICAL CHARACTERISTICS--Single +5V Supply (continued) MAX4641/MAX4642/MAX4643 High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches 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 = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DIGITAL INPUTS IN_ Input Logic High VIH 2.0 IN_ Input Logic Low VIL IN_ Input Current IIN VIN_ = 0.4V or 2.0V RL = 300, CL = 35pF, VNO_ = VNC_ = 2V, Figure 2 TA = +25C tON RL = 300, CL = 35pF, VNO_ = VNC_ = 2V, Figure 2 TA = +25C RL = 300, CL = 35pF, VNO_ = VNC_ = 2V, Figure 2 TA = +25C -0.1 V 0.4 V 0.005 0.1 A 14 20 DYNAMIC Turn-On Time (Note 4) Turn-Off Time (Note 4) Break-Before-Make (Note 4) (MAX4643 only) Charge Injection tOFF tBBM ns TA = TMIN to TMAX 22 6 10 ns TA = TMIN to TMAX 11 7 ns TA = TMIN to TMAX 1 Q VGEN = 0, RGEN = 0, CL = 1nF, Figure 4 2 pC NO_, NC_ Off-Capacitance CNO_(OFF), CNC_(OFF) NO_ or NC_ = GND, f = 1MHz, Figure 5 7 pF COM_ Off-Capacitance CCOM_(OFF) f =1MHz, Figure 5 7 pF Switch On-Capacitance C(ON) f =1MHz, Figure 5 18 pF Off-Isolation (Note 6) VISO CL = 5pF, RL = 50, Figure 3 f = 10MHz -56 f = 1MHz -80 Crosstalk (Note 7) VCT CL = 5pF, RL = 50, Figure 3 f = 10MHz -77 f = 1MHz -97 dB dB SUPPLY Positive Supply Current I+ V+ = 3.3V, VIN_ = 0 or V+ 0.001 1.0 A Note 2: RON = 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 floating. Note 6: Off-Isolation = 20log10 (VO_ / VI_), where VO is VCOM_ and VI is VNC_ or VNO_ from the network analyzer. Note 7: Crosstalk is measured between the two switches. Note 8: RON and RON matching specifications for QFN-packaged parts are guaranteed by design. 4 _______________________________________________________________________________________ High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches ICOM = 10mA 10 V+ = 2.5V V+ = 3.0V 5 V+ = 3V LEAKAGE (pA) RON () 4 1000 MAX4641/2/3toc02 ICOM = 10mA V+ = 1.8V 15 RON () 5 MAX4641/2/3toc01 20 ON-/OFF-LEAKAGE CURRENT vs. TEMPERATURE ON-RESISTANCE vs. TEMPERATURE MAX4641/2/3toc03 ON-RESISTANCE vs. VCOM 3 IN = V+ 100 10 V+ = 5V 2 IN = GND V+ = 5V 0 1 0 2 3 4 5 1 -40 -15 10 35 60 85 -40 -15 10 35 60 VCOM (V) TEMPERATURE (C) TEMPERATURE (C) CHARGE INJECTION vs. VCOM SUPPLY CURRENT vs. SUPPLY VOLTAGE LOGIC THRESHOLD vs. SUPPLY VOLTAGE 45 30 100 80 60 40 85 MAX4641/2/3toc06 IN = GND 120 SUPPLY CURRENT (nA) 60 2.0 LOGIC THRESHOLD (V) V+ = 5V MAX4641/2/3toc05 140 TOC4641/2/3toc04 CHARGE INJECTION (pC) 75 1 1.5 1.0 0.5 15 20 IN = V+ 0 0 1 2 3 4 0 VCOM (V) 2.8 3.8 4.8 SUPPLY VOLTAGE (V) SWITCHING TIMES vs. SUPPLY VOLTAGE SWITCHING TIMES vs. TEMPERATURE 1.8 9 6 6 4 2 3 4 SUPPLY VOLTAGE (V) 5 300 4.2 5.0 IN = GND 250 5.8 200 V+ = 5V 150 100 V+ = 3V V+ = 1.8V 50 0 0 3.4 SUPPLY CURRENT vs. TEMPERATURE 2 3 2.6 SUPPLY VOLTAGE (V) SUPPLY CURRENT (nA) 8 SWITCHING TIMES (ns) 12 1.8 5.8 TOC4641/2/3toc08 10 TOC4641/2/3toc07 15 SWITCHING TIMES (ns) 5 TOC4641/2/3toc09 0 0 -40 -15 10 35 TEMPERATURE (C) 60 85 -40 -15 10 35 60 85 TEMPERATURE (C) _______________________________________________________________________________________ 5 MAX4641/MAX4642/MAX4643 Typical Operating Characteristics (V+ = +5V or +3V, VINH = V+, VINL = GND, TA = +25C, unless otherwise noted.) Typical Operating Characteristics (continued) (V+ = +5V or +3V, VINH = V+, VINL = GND, TA = +25C, unless otherwise noted.) -20 OFF-ISOLATION CROSSTALK (dB) -20 -40 -50 -60 -40 V+ = 5V 0.04 THD (%) ON-LOSS 0.05 MAX4641/2/3toc11 V+ = 5V -30 0 MAX4641/2/3toc10 0 -10 TOTAL HARMONIC DISTORTION vs. FREQUENCY CROSSTALK vs. FREQUENCY MAX4641/2/3toc12 FREQUENCY RESPONSE (dB/div) MAX4641/MAX4642/MAX4643 High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches 0.03 -60 0.02 -80 0.01 -70 -80 -90 -100 0.01 0.1 1 10 100 1000 -100 0.01 0.1 1 10 0 0.01 100 FREQUENCY (MHz) FREQUENCY (MHz) 0.1 1 10 100 FREQUENCY (kHz) Pin Description PIN NAME FUNCTION MAX4641 MAX4642 MAX4643 1, 5 - - NO1, NO2 Analog Switch Normally Open Terminals - 1, 5 - NC1, NC2 Analog Switch Normally Closed Terminals - - 1 NO1 Analog Switch Normally Open Terminal - - 5 NC2 Analog Switch Normally Closed Terminal 2, 6 2, 6 2, 6 COM1, COM2 3, 7 3, 7 3, 7 IN2, IN1 4 4 4 GND 8 8 8 V+ Analog Switch Common Terminals Logic-Controlled Inputs Ground Positive Supply Input. Bypass with a 0.1F capacitor to GND. Note: NO_, NC_, and COM_ pins are identical and interchangeable. Signals can be passed through either side of these bidirectional switches. However, the typical off-capacitances differ, as shown in the Electrical Characteristics. 6 _______________________________________________________________________________________ High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches TOP VIEW MAX4641 MAX4642 MAX4643 NO1 1 8 V+ NC1 1 8 V+ NO1 1 8 V+ COM1 2 7 IN1 COM1 2 7 IN1 COM1 2 7 IN1 IN2 3 6 COM2 IN2 3 6 COM2 IN2 3 6 COM2 GND 4 5 NO2 GND 4 5 NC2 GND 4 5 NC2 QFN QFN MAX4641 QFN MAX4642 MAX4643 IN_ NO_ IN_ NC_ IN_ NO1 NC2 0 OFF 0 ON 0 OFF ON 1 ON 1 OFF 1 ON OFF Applications Information V+ NO_, NC_ COM GND Figure 1. Overvoltage Protection Using External Blocking Diodes exceeds V+ or GND (Figure 1). Virtually all of the analog leakage current comes from the ESD diodes to 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. The MAX4641/MAX4642/MAX4643 operate from a single supply ranging from +1.8V to +5.5V. The devices are 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 _______________________________________________________________________________________ 7 MAX4641/MAX4642/MAX4643 Pin Configurations/Functional Diagrams/Truth Tables (continued) MAX4641/MAX4642/MAX4643 High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches V+ OPEN V+ NO_ NO_ VNO_ IN_ 50% VNO_ VCOM_ COM_ 90% VCOM_ 50 50% 0 MAX4641 IN_ tR < 5ns tF < 5ns VIH + 0.5V 300 GND 90% 0 35pF tON tOFF V+ OPEN V+ NC_ NC_ VIH + 0.5V VNC_ IN_ MAX4642 IN_ VCOM_ COM_ 50 50% 50% 0 300 GND 35pF VNC_ VCOM_ 0 90% tOFF 90% tON V+ VS V+ NC_ NO_ VIH + 0.5V VS IN_ 0 MAX4643 IN_ 50 GND VS VCOM_ COM_ 300 35pF 90% 90% VCOM_ 0 tBBM tBBM = tON(NO_) - tOFF(NC_) OR tBBM = tON(NC_) - tOFF(NO_) Figure 2. Switching Times 8 _______________________________________________________________________________________ tBBM High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches V+ 0.1F NO_ OR NC_ VIN NETWORK ANALYZER 50 50 * MAX4641 MAX4642 MAX4643 COM_ V+ MAX4641/MAX4642/MAX4643 V+ VOUT MEAS REF IN_ GND 50 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. 50 V OFF-ISOLATION = 20log OUT VIN VOUT ON-LOSS = 20log VIN * ADD 50 TERMINATION FOR OFF-ISOLATION Figure 3. Off-Isolation, On-Loss, and Crosstalk V+ V+ V+ VIN IN_ NO_ OR NC_ VNO_ OR VNC_ = 0V V+ MAX4641 MAX4642 MAX4643 COM_ GND 50 VOUT CL 1000pF AS REQUIRED NO_ OR NC_ MAX4641 MAX4642 IN_ MAX4643 COM_ 1MHz CAPACITANCE ANALYZER GND V+ VIN 0 MAX4641 VOUT Figure 5. NO_, NC_, and COM_ Capacitance MAX4642 VOUT VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Chip Information TRANSISTOR COUNT: 105 Q = VOUT x CL Figure 4. Charge Injection _______________________________________________________________________________________ 9 High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches 8LUMAXD.EPS MAX4641/MAX4642/MAX4643 Package Information 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 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.