19-1984; Rev 1; 10/01 High-Current, 10Ω, SPST, CMOS Analog Switches The MAX4655–MAX4658 power-supply range is from ±4.5V to ±20V for dual supply operation and +9V to +40V for single supply operation. These switches can operate from any combination of supplies, within a 40V V+ to V- range. They conduct equally well in either direction and can handle Rail-to-Rail® analog signals. The offleakage current is only 1nA max at TA = +25°C. They are available in 8-pin µMAX, QFN, and SO packages, with exposed pad options for high-power applications. Applications Relay Replacement Test Equipment Communication Systems xDSL Modems PBX, PABX Systems Audio Signal Routing Features ♦ High Continuous Current Handling 300mA (MAX4655/MAX4656) 150mA (MAX4657/MAX4658) ♦ High Peak Current Handling 400mA (MAX4655/MAX4656) 300mA (MAX4657/MAX4658) ♦ 10Ω max On-Resistance (±15V supplies) ♦ VL not Required ♦ 1Ω max RON Flatness over Specified Signal Range ♦ Rail-to-Rail Signal Handling ♦ +12V Single Supply or ±15V Dual Supply Operation ♦ Pin Compatible with DG417, DG418 Ordering Information PART MAX4655EGA MAX4655EUA MAX4655ESA MAX4656EGA MAX4656EUA MAX4656ESA MAX4657EGA MAX4657EUA MAX4657ESA MAX4658EGA MAX4658EUA MAX4658ESA TEMP. RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 8 QFN 8 µMAX-EP* 8 SO-EP* 8 QFN 8 µMAX-EP* 8 SO-EP* 8 QFN 8 µMAX 8 SO 8 QFN 8 µMAX 8 SO *EP = exposed pad Pin Configurations/ Functional Diagrams/Truth Tables TOP VIEW COM 1 8 NC COM 1 8 Audio Systems NO N.C. 2 7 V- N.C. 2 7 V- PC Multimedia Boards GND 3 6 IN GND 3 6 IN V+ 4 5 N.C. V+ 4 5 N.C. Redundant/Backup Systems MAX4655/MAX4657 µMAX/SO/QFN µMAX/SO/QFN MAX4655/MAX4657 LOGIC SWITCH MAX4656/MAX4658 LOGIC SWITCH 0 1 Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. MAX4656/MAX4658 ON OFF SWITCHES SHOWN FOR LOGIC "0" INPUT 0 1 OFF ON N.C. = NO CONNECT NC = NORMALLY CLOSED ________________________________________________________________ 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 MAX4655–MAX4658 General Description Maxim’s MAX4655–MAX4658 are medium-voltage CMOS analog switches with low on-resistance of 10Ω max, specifically designed to handle large switch currents. With a switch capability of up to 400mA peak current and 300mA continuous current (MAX4655/ MAX4656), and up to 300mA peak current and 150mA continuous current (MAX4657/MAX4658), these parts can switch loads as low as 25Ω. They can replace reed relays with a million times the speed and virtually unlimited number of lifetime cycles. Normal power consumption is only 3mW, whether the switch is on or off. These parts are TTL/CMOS compatible and will switch any voltage within its power-supply range. These are SPST (single-pole/single-throw) switches. The MAX4655/MAX4657 are normally closed (NC), while the MAX4656/MAX4658 are normally open (NO). The difference between the MAX4655/MAX4656 and the MAX4657/MAX4658 is in the power dissipation of their packages. Refer to the Absolute Maximum Ratings and the Electrical Characteristics. MAX4655–MAX4658 High-Current, 10Ω, SPST, CMOS Analog Switches ABSOLUTE MAXIMUM RATINGS V+ to GND ..............................................................-0.3V to +44V V- to GND ...............................................................-44V to +0.3V V+ to V-...................................................................-0.3V to +44V All Other Pins to GND (Note 1)..................V- - 0.3V to V+ + 0.3V Continuous Current, COM, NO, NC (MAX4655/MAX4656) ..................................................±300mA Continuous Current, COM, NO, NC (MAX4657/MAX4658) ..................................................±150mA Continuous Current, IN .....................................................±30mA Peak Current, COM, NO, NC (pulsed at 1ms, 10% duty cycle) MAX4655/MAX4656....................................................±400mA (pulsed at 1ms, 10% duty cycle) MAX4657/MAX4658....................................................±300mA Continuous Power Dissipation (TA = +70°C) 8-Pin QFN (derate 24.4mW/°C above +70°C) ............195mW 8-Pin µMAX-EP (derate 10.3mW/°C above +70°C) MAX4655/MAX4656 ....................................................825mW 8-Pin µMAX (derate 4.50mW/°C above +70°C) MAX4657/MAX4658 ....................................................362mW 8-Pin SO-EP (derate 18.9mW/°C above +70°C) MAX4655/MAX4656 ..................................................1509mW 8-Pin SO (derate 5.88mW/°C above +70°C) MAX4657/MAX4658 ....................................................471mW Operating Temperature Ranges MAX4655–MAX4658 ..................................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Note 1: Signals on NC, NO, COM, or IN exceeding V+ or V- will be 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—Dual Supplies (V+ = +15V, V- = -15V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 7) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog Signal Range VNO, VNC, VCOM On-Resistance RON V+25°C ICOM = 100mA; VNO or VNC = ±10V TMIN to TMAX 7 10 15 +25°C 0.3 1 On-Resistance Flatness (Note 3) RFLAT (ON) ICOM = 100mA; VNO or VNC = -5V, 0, +5V TMIN to TMAX NO or NC Off-Leakage Current (Note 4) INO(OFF) or INC(OFF) VCOM = +14.5V, -14.5V; VNO or VNC = -14.5V, +14.5V +25°C -1 TMIN to TMAX -10 COM Off-Leakage Current (Note 4) ICOM(OFF) VCOM = +14.5V, -14.5V; VNO or VNC = -14.5V, +14.5V +25°C -1 TMIN to TMAX -10 10 -2 2 ICOM(ON) VCOM = +14.5V, -14.5V; VNO or VNC = +14.5V, -14.5V, or floating +25°C COM On-Leakage Current (Note 4) TMIN to TMAX -20 20 1.5 0.01 1 10 0.01 1 Ω Ω nA nA nA DYNAMIC CHARACTERISTICS Turn-On Time Turn-Off Time 2 tON tOFF VNO or VNC = 10V; RL = 50Ω; MAX4655/4656, RL = 100Ω; MAX4657/4658, CL = 35pF; Figure 3 VNO or VNC = 10V; RL = 50Ω; MAX4655/4656, RL = 100Ω; MAX4657/4658, CL = 35pF; Figure 3 +25°C 110 200 ns TMIN to TMAX +25°C 300 75 100 ns TMIN to TMAX _______________________________________________________________________________________ 150 High-Current, 10Ω, SPST, CMOS Analog Switches (V+ = +15V, V- = -15V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 7) PARAMETER SYMBOL Charge Injection Q -3dB Bandwidth BW CONDITIONS VGEN = 0; RGEN = 0; CL = 1nF; Figure 4 TA MIN TYP MAX UNITS +25°C 23 pC +25°C 210 MHz Off-Isolation (Note 5) VISO f = 1MHz; RL = 50Ω; Figure 5 +25°C -77 Total Harmonic Distortion THD f = 20Hz to 20kHz, VN_ = 5Vp-p; RL = 600Ω +25°C 0.007 % NO or NC Off-Capacitance CNO(OFF), CNC(OFF) f = 1MHz; Figure 6 +25°C 25 pF COM Off-Capacitance CCOM(OFF) f = 1MHz; Figure 6 +25°C 25 pF COM On-Capacitance CCOM(ON) f = 1MHz; Figure 7 +25°C 67 pF dB DIGITAL I/O Input Logic High VIH Input Logic Low VIL Input Leakage Current IIN TMIN to TMAX 2.4 V TMIN to TMAX VIN = 0.8V or 2.4V 0.8 V TMIN to TMAX -1 1 µA TMIN to TMAX ±4.5 ±20 V POWER SUPPLY Power-Supply Range Positive Supply Current Negative Supply Current Ground Current I+ I- IGND VIN = 0 or 5V, VN_ = 3V; ISWITCH = 200mA, MAX4655/4656; ISWITCH = 100mA, MAX4657/4658 VIN = 0 or 5V, VN_ = 3V; ISWITCH = 200mA, MAX4655/4656; ISWITCH = 100mA, MAX4657/4658 VIN = 0 or 5V, VN_ = 3V; ISWITCH = 200mA, MAX4655/4656; ISWITCH = 100mA, MAX4657/4658 +25°C 90 150 µA TMIN to TMAX +25°C 300 10 50 µA TMIN to TMAX +25°C 100 80 130 µA TMIN to TMAX 260 _______________________________________________________________________________________ 3 MAX4655–MAX4658 ELECTRICAL CHARACTERISTICS—Dual Supplies (continued) MAX4655–MAX4658 High-Current, 10Ω, SPST, CMOS Analog Switches ELECTRICAL CHARACTERISTICS—Single Supply (V+ = +12V, V- = 0, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS TA MIN TMIN to TMAX 0 TYP MAX UNITS V+ V ANALOG SWITCH Analog Signal Range VIN On-Resistance On-Resistance Flatness (Note 3) RON RFLAT (ON) +25°C ICOM = 50mA, VNO or VNC = 10V TMIN to TMAX ICOM = 50mA, VNO or VNC = 2V, 6V, 10V TMIN to TMAX 15 22 33 +25°C 2.2 4 5 Ω Ω DYNAMIC CHARACTERISTICS Turn-On Time Turn-Off Time Charge Injection tON tOFF Q VNO or VNC = 10V; RL = 100Ω MAX4655/4656, RL = 200Ω MAX4657/4658, CL = 35pF; Figure 3 VNO or VNC = 10V; RL = 100Ω MAX4655/4656, RL = 200Ω MAX4657/4658, CL = 35pF; Figure 3 VGEN = 0; RGEN = 0; CL = 1nF; Figure 4 +25°C 140 200 ns TMIN to TMAX 300 +25°C 65 125 ns TMIN to TMAX 200 +25°C 1 pC POWER SUPPLY Power-Supply Range Positive Supply Current (Note 6) V+ 9 VIN = 0 or 12V, ISWITCH = 100mA, MAX4655/4656; ISWITCH = 50mA, MAX4657/4658 +25°C 40 25 TMIN to TMAX V 100 200 µA I+ VIN = 0 or 5V, ISWITCH = 100mA, MAX4655/4656; ISWITCH = 50mA, MAX4657/4658 +25°C 46 TMIN to TMAX 125 200 Note 2: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. Note 3: 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: Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at TA = +25°C. Note 5: Off-isolation = 20log10 [VCOM / (VNC or VNO)], VCOM = output, VNC or VNO = input to off switch. Note 6: Guaranteed by testing with dual supplies. Note 7: -40°C specifications are quaranteed by design. 4 _______________________________________________________________________________________ High-Current, 10Ω, SPST, CMOS Analog Switches 20 B D 10 D -10 0 E 10 20 TA = -40°C 0 VCOM (V) VCOM (V) 0 VCOM (V) ON-RESISTANCE vs. VCOM AND TEMPERATURE (SINGLE SUPPLY) LEAKAGE CURRENT vs. TEMPERATURE CHARGE INJECTION vs. VCOM 15 TA = -40°C 24 32 V+ = +15V, V- = -15V ICOM(0N) 1000 10 -15 40 4 6 8 10 ICOM(0FF) 10 1 -30 VCOM (V) V- = 0 200 150 100 50 -15 10 35 60 TEMPERATURE (°C) 85 60 A A: I+, TA = -40°C B: I+, TA = +25°C C: I+, TA = +85°C D: I-, TA = -40°C E: I-, TA = +25°C F: I-, TA = +85°C 50 40 B C D 30 E F DUAL SUPPLIES: ±15V, VCOM = 3V, ISWITCH = 100mA 20 0 0 5 10 15 20 25 SUPPLY VOLTAGE (V) 30 35 40 -10 -5 0 5 15 VCOM (V) 10 0 -15 SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE SUPPLY CURRENT (µA) MAX4655/58 toc07 250 10 B -60 -40 SUPPLY CURRENT vs. SUPPLY VOLTAGE (SINGLE SUPPLY) 15 A 0 12 10 A: V+ = +15V, V- = -15V B: V+ = +12V, V- = 0V 60 TOTAL HARMONIC DISTORTION vs. FREQUENCY 1 TOTAL HARMONIC DISTORTION (%) 2 5 30 100 MAX4657/58 toc08 0 -5 90 0.1 5 -10 MAX4655/58 toc06 16 Q (pC) TA = +25°C 8 10,000 OFF-LEAKAGE (pA) TA = +85°C 20 0 MAX4655/58 toc05 MAX4655/58 toc04 25 SUPPLY CURRENT (µA) TA = +25°C 5 0 -20 TA = +85°C 5 A: V+ = +4.5V, V- = -4.5V D: V+ = +15V, V- = -15V B: V+ = +10V, V- = -10V E: V+ = +20V, V- = -20V C: V+ = +12V, V- = -12V 0 RON (Ω) C 10 5 10 15 MAX4655/58 toc09 E RON (Ω) C 15 RON (Ω) B 15 A: V+ = +9V, V- = 0 B: V+ = +12V, V- = 0 C: V+ = +24V, V- = 0 D: V+ = +36V, V- = 0 E: V+ = +40V, V- = 0 A MAX4655/58 toc02 A 20 RON (Ω) 25 MAX4655/58 toc01 25 ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES) ON-RESISTANCE vs. VCOM (SINGLE SUPPLY) MAX4655/58 toc03 ON-RESISTANCE vs. VCOM (DUAL SUPPLIES) V+ = +15V V- = -15V 5VRMS SIGNAL 600Ω SOURCE 0.1 0.01 0.001 0 ±5 ±10 SUPPLY VOLTAGE (V) ±15 10 100 1k 10k FREQUENCY (Hz) 100k _______________________________________________________________________________________ 5 MAX4655–MAX4658 Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) LOGIC LEVEL THRESHOLD VOLTAGE vs. SUPPLY VOLTAGE ON-RESPONSE 300 MAX4655/58 toc11 2.6 RL = 300Ω CL = 35pF 250 BW = 210MHz -20 200 2.2 VTH (V) -40 OFF-ISOLATION -60 tON/tOFF (ns) 0 3.0 MAX4655/58 toc10 20 TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE (DUAL SUPPLIES) MAX4655/58 toc12 ON-RESPONSE, OFF-ISOLATION vs. FREQUENCY LOSS (dB) 1.8 150 tON 100 -80 tOFF 1.4 V+ = +15V, V- = -15V -120 0.01 0.1 1 10 100 50 1.0 0 5 1000 10 15 20 25 30 7 9 13 15 SUPPLY CURRENT vs. VOLTAGE ACROSS SWITCH 3000 MAX4655/58 toc13 V+ = +15V V- = -15V RL = 300Ω CL = 35pF 11 V+, V- (V) TURN-ON/TURN-OFF TIME vs. TEMPERATURE 160 5 40 V+ (V) FREQUENCY (MHz) 200 35 MAX4655/58 toc14 -100 V+ = +15V, V- = -15V 2500 2000 120 I+ (µA) tON/tOFF (ns) MAX4655–MAX4658 High-Current, 10Ω, SPST, CMOS Analog Switches tON 1500 80 1000 tOFF 40 500 0 0 -40 -15 10 35 60 85 -10 TEMPERATURE (°C) -5 0 5 10 VCOM - VN_ (mV) Pin Description PIN MAX4655/ MAX4657 6 MAX4656/ MAX4658 NAME FUNCTION 1 1 COM Analog Switch Common 2, 5 2, 5 N.C. No Internal Connection 3 3 GND Ground 4 4 V+ Positive Supply Voltage Input 6 6 IN Digital Control Input 7 7 V- Negative Supply Voltage Input — 8 NO Analog Switch Normally Open 8 — NC Analog Switch Normally Closed _______________________________________________________________________________________ High-Current, 10Ω, SPST, CMOS Analog Switches Applications Information Overvoltage Protection Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings can cause permanent damage to the devices. First, connect GND, followed by V+, V-, and the remaining pins. If power-supply sequencing is not possible, add two small signal diodes (D1, D2) in series with supply pins (Figure 1). Adding diodes reduces the analog signal range to one diode drop below V+ and one diode drop above V-, but does not affect the devices’ low switch resistance and low leakage characteristics. Device operation is unchanged, and the difference between V+ and V- should not exceed 44V. The protection diode for the negative supply is not required when V- is connected to GND. Off-Isolation at High Frequencies In 50Ω systems, the high-frequency on-response of these parts extends from DC to above 100MHz, with a typical loss of -2dB. When the switch is turned off, however, it behaves like a capacitor, and off-isolation decreases with increasing frequency. This effect is more pronounced with higher source and load impedances. Above 5MHz, circuit board layout becomes critical. The graphs shown in the Typical Operating Characteristics were taken using a 50Ω source and load connected with BNC connectors. When the analog input to output voltage drop is approximately 7mV there is an increase in power supply current from typically 90µA to 2mA within a 1mV to 7mV range, caused by the new sensing/driving circuitry. V+ V+ NO_ COM_ Vg V- V- Figure 1. Overvoltage Protection Using Blocking Diodes _______________________________________________________________________________________ 7 MAX4655–MAX4658 Detailed Description The MAX4655–MAX4658 are single SPST CMOS analog switches. The CMOS switch construction provides rail-to-rail signal handling while consuming very little power. The switch is controlled by a TTL/CMOS level compatible digital input. The MAX4655/MAX4657 are normally closed switches, and the MAX4656/MAX4658 are normally open switches. These devices can be operated with either single power supplies or dual power supplies. Operation at up to ±20V supplies allows users a wide switching dynamic range. Additionally, asymmetrical operation is possible to tailor performance to a particular application. These switches have been specifically designed to handle high switch currents, up to 400mA peak current and 300mA continuous currents. In order to do this, a new technique is used to drive the body of the output N-channel device. (Note: the basic switch between the input NC/NO terminal, and the output common terminal consists of an N-channel MOSFET and a P-channel MOSFET in parallel.) The standard method limits operation to approximately a 600mV drop across the switch. More than 600mV causes an increase in IdON leakage current (due to the turn-on of on-chip parasitic diodes) and an increase in V+ supply current. With the new sensing method, there is no limitation to the voltage drop across the switch. Current and voltage are limited only by the power dissipation rating of the package and the absolute maximum ratings of the switch. MAX4655–MAX4658 High-Current, 10Ω, SPST, CMOS Analog Switches Test Circuits/Timing Diagrams NC OR NO COM V+ TTL/CMOS LEVEL SHIFTER IN NO OR NC GND SENSOR COM V- Figure 2. Block Diagram MAX4655– MAX4658 +15V LOGIC INPUT t R < 20ns t F < 20ns +3V 50% NC OR NO VO CL 35pF RL IN VO SWITCH OUTPUT COM t OFF SWITCH V COM INPUT SWITCH OUTPUT V+ SWITCH INPUT 0 0.9V0 0.9V0 0 t ON LOGIC INPUT GND V- -15V CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VO = VCOM RL + RON LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. ( ) Figure 3. Switching Time +15V ∆VO MAX4655– MAX4658 V+ VO COM IN OFF IN ON ON OFF OFF OFF Q = (∆V O )(C L ) V GEN GND NC OR NO V- VO CL 1nF -15V VIN = +3V IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 4. Charge Injection 8 _______________________________________________________________________________________ High-Current, 10Ω, SPST, CMOS Analog Switches MAX4655– MAX4658 +15V C SIGNAL GENERATOR 0dBm C +15V MAX4655– MAX4658 V+ V+ COM COM RL 0V, 2.4V IN CAPACITANCE METER IN 0V f = 1MHz ANALYZER NC OR NO NC OR NO GND V- GND C V- C -15V -15V Figure 7. Channel On-Capacitance Figure 5. Off-Isolation Chip Information C +15V MAX4655– MAX4658 TRANSISTOR COUNT: 45 PROCESS: CMOS V+ COM IN 2.4V CAPACITANCE METER NC OR NO f = 1MHz GND V- C -15V Figure 6. Channel Off-Capacitance _______________________________________________________________________________________ 9 MAX4655–MAX4658 Test Circuits/Timing Diagrams (continued) High Current, 10Ω, SPST, CMOS Analog Switches 6L, 8L QFN(DUAL).EPS MAX4655–MAX4658 Package Information µ 10 ______________________________________________________________________________________ High Current, 10Ω, SPST, CMOS Analog Switches 8LUMAXD.EPS ______________________________________________________________________________________ 11 MAX4655–MAX4658 Package Information (continued) MAX4655–MAX4658 High Current, 10Ω, SPST, CMOS Analog Switches SOICN.EPS Package Information (continued) 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. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.