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| 19-1747; Rev 0; 7/00 3 Single SPST Analog Switches ________________General Description The MAX4675/MAX4676 single analog switches feature 3 (max) on-resistance (RON) and 0.7 flatness when operating from dual 5V supplies. These switches can handle Rail-to-Rail(R) analog signals. Off-leakage current is 0.1nA at TA = +25C. The MAX4675/MAX4676 are ideal in low-distortion applications and are the preferred solution over mechanical relays in automated test equipment or applications where current switching is required. They are more reliable than mechanical relays, have low power requirements (<1A), and are available in a space-saving 6-pin SOT23 package. The MAX4675 has a single normally open (NO) switch, and the MAX4676 has a single normally closed (NC) switch. The MAX4675/MAX4676 operate from either a single +2.7V to +5.5V or dual 2.7V to 5.5V supplies, making them ideal for use in digital card applications and single-ended 75 systems. ____________________________Features o 3 (max) RON o 0.7 (max) RON Flatness o Dual 2.7V to 5.5V or Single +2.7V to +5.5V Supply Range o Off-Isolation -75dB at 1MHz, Dual Supply -65dB at 1MHz, Single Supply o -3dB Bandwidth 250MHz o Rail-to-Rail Signal Handling MAX4675/MAX4676 ________________________Applications Reed Relay Replacement Test Equipment Communications Systems PBX, PABX Systems Audio Signal Routing Avionics ADC Systems Data-Acquisition Systems _______________Ordering Information PART MAX4675EUT-T MAX4676EUT-T TEMP. RANGE -40C to +85C -40C to +85C PINPACKAGE 6 SOT23-6 6 SOT23-6 SOT MARK AAND AANE Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW V+ 1 6 IN V+ 1 6 IN COM 2 5 NO COM 2 5 NC V- 3 MAX4675 SOT23 4 GND V- 3 MAX4676 SOT23 4 GND MAX4675 IN SWITCH 0 1 OFF ON MAX4676 IN SWITCH 0 1 ON OFF Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. ________________________________________________________________ Maxim Integrated Products 1 For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. 3 Single SPST Analog Switches MAX4675/MAX4676 ABSOLUTE MAXIMUM RATINGS V+ to GND ................................................................-0.3V to +6V V- to GND .................................................................+0.3V to -6V V+ to V- ..................................................................................12V IN to GND .....................................................-0.3V to (V+ + 0.3V) All Other Pins (Note 1) ..........................(V- - 0.3V) to (V+ + 0.3V) Continuous Current (NO, NC, COM) ..............................100mA Peak Current (NO, NC, COM, pulsed at 1ms (10% duty cycle).........................................................200mA Continuous Power Dissipation (TA = +70C) 6-Pin SOT23 (derate 8.7mW/C above +70C)............691mW Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C 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. Note 1: Signals on NO, NC, COM, or IN exceeding V+ or V- will be clamped by internal diodes. Limit forward diode current to maximum current rating. ELECTRICAL CHARACTERISTICS--DUAL SUPPLIES (V+ = +5V 10%, V- = -5V 10%, GND = 0, VIH = +2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 2, 3) PARAMETER ANALOG SWITCH Input Voltage Range VCOM, VNO, VNC RON V+ = 4.5V, V- = -4.5V, ICOM = 50mA; VNO or VNC = 3.3V V+ = 4.5V, V- = -4.5V, ICOM = 50mA; VNO or VNC = 3.3V, 0 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX -1 -10 -1 -10 -2 -20 0.1 0.1 0.1 0.4 V2.4 V+ 3 4 0.7 1.0 1 nA 10 1 nA TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 10 2 nA 20 V SYMBOL CONDITIONS MIN TYP MAX UNITS On-Resistance On-Resistance Flatness (Note 4) NC or NO Off-Leakage Current RFLAT IN_(OFF) V+ = 5.5V, V- = -5.5V, TA = +25C VCOM = 4.5V; VNO or VNC = TA = TMIN to TMAX 4.5V V+ = 5.5V, V- = -5.5V, VCOM = +4.5V; VNO or VNC = 4.5V V+ = 5.5V, V- = -5.5V, VCOM = 4.5V; VNO or VNC = 4.5V or floating TA = +25C COM Off-Leakage Current ICOM(OFF) COM On-Leakage Current ICOM(ON) LOGIC INPUT Input Low Voltage Input High Voltage Input Leakage Current DYNAMIC Turn-On Time tON V+ = +4.5V, V- = -4.5V; VNO or VNC = 3.3V, RL= 300, CL= 35pF, Figure 2 V+ = +4.5V, V- = -4.5V; VNO or VNC = 3.3V, RL= 300, CL= 35pF, Figure 2 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 50 135 300 ns 375 110 ns 125 VIL VIH IIN 2.4 -1 0.005 1 0.8 V V A Turn-Off Time tOFF 2 _______________________________________________________________________________________ 3 Single SPST Analog Switches ELECTRICAL CHARACTERISTICS--DUAL SUPPLIES (continued) (V+ = +5V 10%, V- = -5V 10%, GND = 0, VIH = +2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 2, 3) PARAMETER Charge Injection Off-Isolation On-Channel Bandwidth (-3dB) NC or NO Off-Capacitance COM Off-Capacitance On-Capacitance POWER SUPPLY Supply Voltage Positive Supply Current Negative Supply Current V+, VI+ IVIN = 0 or 5.5V, V+ = 5.5V, V- = -5.5V VIN = 0 or 5.5V, V+ = 5.5V, V- = -5.5V TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX -1 -10 -0.002 2.7 0.002 5.5 1 10 V A A SYMBOL Q VISO BW C(N_OFF) C(COMOFF) C(ON) CONDITIONS RGEN = 0, CL = 1nF, VGEN = 0, Figure 3 RL = 50, CL = 5pF, f = 1MHz, Figure 4 RS = 50, RL = 50 f = 1MHz, Figure 5 f = 1MHz, Figure 5 f = 1MHz, Figure 5 TA = +25C TA = +25C TA = +25C TA = +25C TA = +25C MIN TYP 87 -75 250 85 85 350 MAX UNITS pC dB MHz pF pF pF MAX4675/MAX4676 ELECTRICAL CHARACTERISTICS--SINGLE SUPPLY (V+ = +5V 10%, V- = 0, GND = 0, VIH = +2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 2, 3) PARAMETER ANALOG SWITCH Input Voltage Range VCOM, VNO, VNC RON V+ = 4.5V; ICOM = 50mA; VNO or VNC = 3.3V V+ = 4.5V; ICOM = 50mA; VNO or VNC = 1.5V, 2.5V, 3.3V V+ = 5.5V; VNO or VNC = 4.5V or 0; VCOM = 0 or 4.5V V+ = 5.5V; VNO or VNC = 4.5V or 0; VCOM = 0 or 4.5V TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX -1 -10 -1 -10 0.1 0.1 0.4 0 3.5 V+ 5.75 7.5 1.6 2 1 nA 10 1 nA 10 V SYMBOL CONDITIONS MIN TYP MAX UNITS On-Resistance On-Resistance Flatness (Note 4) NC or NO Off-Leakage Current RFLAT IN_(OFF) COM Off-Leakage Current ICOM(OFF) _______________________________________________________________________________________ 3 3 Single SPST Analog Switches MAX4675/MAX4676 ELECTRICAL CHARACTERISTICS--SINGLE SUPPLY (continued) (V+ = +5V 10%, V- = 0, GND = 0, VIH = +2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS V+ = 5.5V; VNO or VNC = 0, 4.5V, or floating; VCOM = 0 or 4.5V TA = +25C TA = TMIN to TMAX MIN -2 -20 TYP 0.2 MAX 2 nA 20 UNITS COM On-Leakage Current ICOM (ON) LOGIC INPUT Input Low Voltage Input High Voltage Input Leakage Current DYNAMIC V+ = +4.5V; VNO or VNC = +3.3V, RL = 300, CL= 35pF, Figure 2 V+ = +4.5V; VNO or VNC = +3.3V, RL = 300, CL = 35pF, Figure 2 RGEN = 0, CL = 1nF, VGEN = 2.5V, Figure 3 RL = 50, CL = 5pF, f = 1MHz, Figure 4 RS = 50, RL = 50 C(N_OFF) C(COMOFF) C(ON) V+ I+ VIN = 0 or 5V, V+ = 5.5V TA = +25C TA = TMIN to TMAX f = 1MHz, Figure 5 f = 1MHz, Figure 5 f = 1MHz, Figure 5 TA = +25C TA = +25C TA = +25C 2.7 0.002 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = +25C 31 -65 150 85 85 350 5.5 1 10 55 350 700 ns 850 150 ns 160 pC dB MHz pF pF pF V A VIL VIH IIN 2.4 -1 0.005 1 0.8 V V A Turn-On Time tON Turn-Off Time tOFF Charge Injection Off-Isolation On-Channel Bandwidth (-3dB) NC or NO Off-Capacitance COM Off-Capacitance On-Capacitance POWER SUPPLY Supply Voltage Positive Supply Current Q VISO Note 2: Parameters are 100% tested at +25C only and guaranteed by correlation through the full-rated temperature range. Note 3: 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 4: Flatness is defined as the difference between the maximum and minimum value of RON as measured over the specified analog signal ranges. 4 _______________________________________________________________________________________ 3 Single SPST Analog Switches Typical Operating Characteristics (TA = +25C, unless otherwise noted.) ON-RESISTANCE vs. VCOM (DUAL SUPPLIES) MAX4675 toc01 MAX4675/MAX4676 ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES) V+ = 5V V- = -5V MAX4675 toc02 ON-RESISTANCE vs. VCOM (SINGLE SUPPLY) 16 14 12 RON () V- = 0 MAX4675 toc03 4.0 3.5 3.0 RON () V = 2.5V 2.7 2.5 2.3 RON () 2.1 1.9 1.7 TA = 0C 1.5 TA = -40C 1 2 3 4 5 6 TA = +25C TA = +85C 18 2.5 2.0 1.5 1.0 0.5 0 -6 -4 -2 V = 3V 10 8 6 4 2 0 0 1 2 V+ = +2.7V V+ = +3.3V V+ = +5V V = 5V 0 VCOM (V) 2 4 6 -6 -5 -4 -3 -2 -1 0 3 VCOM (V) 4 5 6 VCOM (V) ON-RESISTANCE vs. VCOM AND TEMPERATURE (SINGLE SUPPLY) MAX4675 toc04 ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE MAX4675 toc05 CHARGE INJECTION vs. VCOM 90 80 70 MAX4675 toc06 5.0 TA = +25C 4.5 4.0 RON () 3.5 3.0 2.5 2.0 0 1 2 3 VCOM (V) 4 5 6 TA = -40C TA = 0C V+ = +5V TA = +85C 14 ON/OFF-LEAKAGE CURRENT (nA) 12 10 100 V+ = 5V V- = -5V Q (pC) 8 6 4 2 0 50 70 ICOM(ON) 60 50 40 30 DUAL SUPPLIES SINGLE SUPPLY ICOM(OFF) 20 10 0 90 TEMPERATURE (C) 110 130 -6 -4 -2 0 VCOM (V) 2 4 6 TURN-ON/TURN-OFF TIMES vs. VCOM (DUAL SUPPLIES) MAX4675 toc07 TURN-ON/TURN-OFF TIMES vs. VCOM (SINGLE SUPPLY) MAX4675 toc08 TURN-ON/TURN-OFF TIMES vs. SUPPLY VOLTAGE (DUAL SUPPLIES) V+ = IV-| 250 tON 200 150 100 tOFF MAX4675 toc09 300 250 200 150 100 50 0 -6 -4 -2 0 VCOM (V) 2 4 6 tOFFA tOFFB tONA A: V+ = +3.5V, V- = -3.5V B: V+ = +5V, V- = -5V 800 700 600 tONB A: V+ = +5.5V B: V+ = +3V 300 tON, tOFF (ns) tON, tOFF (ns) 400 300 200 100 0 0 1 2 3 4 tOFFB tONA tOFFA 50 0 5 6 7 8 9 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 VCOM (V) SUPPLY VOLTAGE (V+, V-) _______________________________________________________________________________________ tON, tOFF (ns) tONB 500 5 3 Single SPST Analog Switches MAX4675/MAX4676 Typical Operating Characteristics (continued) (TA = +25C, unless otherwise noted.) TURN-ON/TURN-OFF TIMES vs. SUPPLY VOLTAGE (SINGLE SUPPLY) MAX4675 toc10 TURN-ON/TURN-OFF TIMES vs. TEMPERATURE (DUAL SUPPLIES) MAX4675 toc11 TURN-ON/TURN-OFF TIMES vs. TEMPERATURE (SINGLE SUPPLY) V+ = +5V V- = 0 MAX4675 toc12 2.5 VCOM = V+/2 2.0 tON, tOFF (s) 140 120 100 tON, tOFF (ns) tON 350 300 250 tON, tOFF (ns) 200 tON 150 100 1.5 tON 1.0 80 60 40 tOFF V+ = +5V V- = -5V -40 -20 0 20 40 60 80 100 0.5 tOFF 20 0 50 0 -40 10 tOFF 60 110 0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) TEMPERATURE (C) TEMPERATURE (C) POWER-SUPPLY CURRENT vs. TEMPERATURE MAX4675 toc13 FREQUENCY RESPONSE 10 -10 LOSS (dB) BANDWIDTH -3dB AT 250MHz V+ = +5V V- = -5V MAX4675 toc14 10 8 6 I+, IGND, I- (nA) 4 2 0 -2 -4 -6 -8 -10 -40 -20 0 20 40 60 II+ V+ = +5V V- = -5V IGND -30 -50 -70 -90 -110 OFF-ISOLATION -75dB AT 1MHz 80 100 0.01 0.1 1 10 100 1000 TEMPERATURE (C) FREQUENCY (MHz) Pin Description PIN MAX4675 1 2 3 4 5 -- 6 MAX4676 1 2 3 4 -- 5 6 NAME V+ COM VGND NO NC IN Positive Supply Analog Switch Common Terminals Negative Supply Ground Analog Switch Normally Open Terminal Analog Switch Normally Closed Terminal Logic Input FUNCTION 6 _______________________________________________________________________________________ 3 Single SPST 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. Always sequence V+ on first, then V-, followed by the logic inputs, NO, NC, or COM. If proper power-supply sequencing is not possible, add two small-signal diodes (D1, D2) in series with the 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 12V. Power-supply bypassing improves noise margin and prevents switching noise from propagating from the V+ supply to other components. A 0.1F capacitor connected from V+ to GND is adequate for most applications. V+ MAX4675/MAX4676 Vg V- Figure 1. Overvoltage Protection Using External Blocking Diodes Timing Diagrams/Test Circuits MAX4675 MAX4676 NO OR NC V+ V+ COM RL 300 IN LOGIC INPUT GND VVCL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL RL + RON SWITCH OUTPUT 0 t ON SWITCH OUTPUT VOUT CL 35pF VOUT 0.9 x V0UT t OFF 0.9 x VOUT LOGIC INPUT +3V 50% 0 50% t r < 20ns t f < 20ns SWITCH INPUT VOUT = VCOM ( ) LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. Figure 2. Switching Time V+ VOUT VOUT VOUT CL GND IN VVVIN = 3.0V IN OFF ON Q = (V OUT )(C L ) IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. OFF IN OFF ON OFF MAX4675 MAX4676 RGEN NC OR NO V+ COM V GEN Figure 3. Charge Injection _______________________________________________________________________________________ 7 3 Single SPST Analog Switches MAX4675/MAX4676 Timing Diagrams/Test Circuits (continued) 10nF SIGNAL GENERATOR 0dBm V+ MAX4675 MAX4676 V+ 10nF V+ MAX4675 MAX4676 V+ COM COM IN ANALYZER NC OR NO GND VV- 0 OR 2.4V IN CAPACITANCE METER f = 1MHz NC OR NO GND VV- 0 OR 2.4V Figure 4. Off-Isolation/On-Channel Bandwidth Figure 5. Channel On/Off-Capacitance Package Information 6LSOT.EPS 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. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. |
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