19-1633; Rev 0; 1/00 0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches Features ♦ Low RON 0.5Ω max (+5V Supply) 0.9Ω max (+3V Supply) ♦ 0.1Ω max RON Flatness (+5V Supply) ♦ Overcurrent Protection ♦ Single-Supply Operation (+1.8V to +5.5V) ♦ Available in SOT23 Packages ♦ Fast Switching: tON = 50ns max, tOFF = 30ns max ♦ TTL-Logic Compatible at +5V ♦ Pin Compatible with MAX4514 (MAX4626) Pin Compatible with MAX4515 (MAX4627) Applications Ordering Information Power Routing Battery-Operated Equipment PART TEMP. RANGE PINPACKAGE TOP MARK MAX4626EUK-T MAX4627EUK-T MAX4628EUT-T -40°C to +85°C -40°C to +85°C -40°C to +85°C 5 SOT23-5 5 SOT23-5 6 SOT23-6 ADMJ ADMK AADN Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits PCMCIA Cards Cellular Phones Modems Hard Drives Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW MAX4627 MAX4626 COM 1 5 V+ COM 1 MAX4628 5 V+ NC 2 NO 2 GND 3 4 IN GND 4 3 MAX4626 0 1 6 V+ NO 2 5 IN GND 3 4 IN SOT23-5 SOT23-5 LOGIC IN COM 1 SWITCH OFF ON SOT23-6 MAX4627 LOGIC 0 1 MAX4628 SWITCH IN IN SWITCH ON OFF 1 1 0 0 0 1 0 1 OFF OFF OFF ON SWITCHES SHOWN FOR LOGIC "0" INPUT. ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. MAX4626/MAX4627/MAX4628 General Description The MAX4626/MAX4627/MAX4628 are low-on-resistance, low-voltage, single-pole/single-throw (SPST) analog switches that operate from a +1.8V to +5.5V single supply. The MAX4626 is normally open (NO), and the MAX4627 is normally closed (NC). The MAX4628 is normally open (NO) and has two control inputs. These devices also have fast switching speeds (tON = 50ns max, tOFF = 30ns max). When powered from a +5V supply, the MAX4626/ MAX4627/MAX4628 offer 0.5Ω max on-resistance (RON) with 0.1Ω max RON flatness, and their digital logic inputs are TTL compatible. These switches also feature overcurrent protection to prevent device damage from short circuits and excessive loads. The MAX4626 is pin compatible with the MAX4514, and the MAX4627 is pin compatible with the MAX4515. The MAX4626/MAX4627 are available in SOT23-5 packages; the MAX4628 is available in a SOT23-6 package. MAX4626/MAX4627/MAX4628 0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND V+, IN, IN..................................................................-0.3V to +6V NO, NC, COM (Note 1).................................-0.3V to (V+ + 0.3V) Continuous Current NO, NC to COM .............................±400mA Peak Switch Current NO, NC to COM (pulsed at 1ms, 10% duty cycle max) ........................ ±800mA Continuous Power Dissipation (TA = 70°C) 5-Pin SOT23-5 (derate 7.1mW/°C above +70°C) ..........571mW 6-Pin SOT23-6 (derate 7.1mW/°C above +70°C) ..........571mW Operating Temperature Range MAX462_EU_ ....................................................-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, or COM exceeding V+ or GND are clamped by internal diodes. 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+ = +5V ±10%, GND = 0, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) (Notes 2, 3) PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance SYMBOL CONDITIONS VCOM, VNO, VNC RON TYP 0 V+ = 4.5V, VNO or VNC = 3.5V, ICOM = 100mA TA = +25°C TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX -2 -20 -2 -20 0.2 TA = +25°C -4 0.3 TA = TMIN to TMAX -40 On-Resistance Flatness (Note 4) RFLAT(ON) V+ = 4.5V; VCOM = 0, 1V, 2V; ICOM = 100mA NO or NC Off-Leakage Current INO(OFF), INC(OFF) V+ = 5.5V; VCOM = 1V, 4.5V; VNO or VNC = 4.5V, 1V COM Off-Leakage Current ICOM(OFF) V+ = 5.5V; VCOM = 1V, 4.5V; VNO or VNC = 4.5V, 1V COM On-Leakage Current ICOM(ON) V+ = 5.5V; VCOM = 1V, 4.5V; VNO or VNC = 1V, 4.5V, or floating Overcurrent-Protection Threshold Current MIN 0.35 TA = TMIN to TMAX MAX UNITS V+ V 0.5 0.6 0.05 0.2 0.10 0.10 2 20 2 20 Ω Ω nA nA 4 nA 40 TA = +25°C 2.4 A TA = +25°C TA = TMIN to TMAX TA = +25°C VNO or VNC = 3V, Figure 2 TA = TMIN to TMAX CL = 1.0nF, VGEN = 0, RGEN = 0, TA = +25°C, Figure 3 RL = 50Ω, CL = 5pF, f = 1MHz, TA = +25°C, Figure 4 f = 1MHz, TA = +25°C, Figure 5 40 40 -51 65 pC dB pF COFF f = 1MHz, TA = +25°C, Figure 5 65 pF CCOM(ON) f = 1MHz, TA = +25°C, Figure 5 130 pF DYNAMIC Turn-On Time tON Turn-Off Time tOFF Charge Injection Off-Isolation (Note 5) COM Off-Capacitance Q OIRR NC or NO OffCapacitance COM On-Capacitance 2 CCOM(OFF) VNO or VNC = 3V, Figure 2 18 _______________________________________________________________________________________ 50 60 30 40 ns ns 0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches (V+ = +5V ±10%, GND = 0, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0.8 V µA LOGIC INPUT Input Voltage Low VINL Input Voltage High VINH 2.4 Logic Input Current IIN -1 1 1.8 5.5 V 10 µA MAX UNITS V+ V V SUPPLY Power-Supply Range V+ Positive Supply Current I+ V+ = 5.5V, VIN = 0 or V+ ELECTRICAL CHARACTERISTICS—Single +3V Supply (V+ = +2.7V to +3.6V, GND = 0, VINH = 2.0V, VINL = 0.6V, TA = TMIN to TMAX, unless otherwise noted.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS MIN TYP ANALOG SWITCH Analog Signal Range On-Resistance VCOM, VNO, VNC RON On-Resistance Flatness (Note 4) RFLAT(ON) 0 V+ = 2.7V, VNO or VNC = 1.5V, ICOM = 100mA TA = +25°C 0.4 TA = TMIN to TMAX 0.8 0.9 V+ = 2.7V; ICOM = 100mA; VNO or VNC = 0, 0.75V, 1.5V; TA = +25°C Ω Ω 0.1 DYNAMIC Turn-On Time tON VNO or VNC = 1.5V, Figure 2 TA = +25°C Turn-Off Time tOFF VNO or VNC = 1.5V, Figure 2 TA = +25°C Charge Injection Q 65 TA = TMIN to TMAX 80 90 22 TA = TMIN to TMAX 40 50 CL = 1.0nF, Figure 3, VGEN = 0, RGEN = 0, Ta = +25°C ns ns pC 30 LOGIC INPUT Input Voltage Low VINL Input Voltage High VINH 2.0 0.6 Logic Input Current IIN -1 V V 1 µA 10 µA SUPPLY Positive Supply Current I+ V = +3.6V, VIN = 0 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: SOT-packaged parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and correlation. Note 4: Flatness is defined as the difference between the maximum and minimum values of on-resistance as measured over the specified analog signal range. Note 5: Off-Isolation = 20log10 [VCOM / (VNC or VNO)], VCOM = output, VNC or VNO = input to off switch. _______________________________________________________________________________________ 3 MAX4626/MAX4627/MAX4628 ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued) Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) ON-RESISTANCE vs. COM VOLTAGE OVER SUPPLY VOLTAGE ON-RESISTANCE vs. COM VOLTAGE OVER TEMPERATURE 0.5 TA = +105°C 1.5 1.0 0.5 TA = +85°C 0.3 TA = -40°C TA = +25°C 0.2 VCC = +2.3V VCC = +2.5V VCC = +3.0V VCC = +5V 50 tON/tOFF (ns) RON(Ω) VCC = +2.0V 60 40 0.4 2.0 RON(Ω) V + = 5V ICOM = 100mA MAX4626/7/8-03 VCC = +1.8V TURN-ON/OFF TIMES vs. SUPPLY VOLTAGE MAX4626/7/8-02 ICOM = 100mA 2.5 0.6 MAX4626/7/801 3.0 tON 30 20 TA = -55°C 0.1 10 0 0 tOFF 2 3 4 0 5 1 2 3 4 5 VCOM (V) VCOM (V) TURN-ON/OFF TIMES vs. TEMPERATURE ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE 60 tON 40 4 5 6 CHARGE INJECTION vs. COM VOLTAGE 10 120 100 1 ON/OFF-LEAKAGE (nA) 80 3 VSUPPLY (V) 80 Q (pC) V+ = 5V VNO or VNC = 3V 2 MAX4626/7/805 100 1 MAX4626/7/8-04 0 MAX4626/7/8-06 0 tON/tOFF (ns) 0.1 60 40 0.01 20 20 tOFF 0.001 0 -40 -20 0 20 40 60 0 -40 80 -20 0 20 40 60 80 100 -20 -40 -30 OFF-ISOLATION -40 -60 -50 -70 -60 V+ = 5V 50Ω = IN/OUT 1M 10M FREQUENCY (Hz) 4 100M PHASE (degrees) -30 -90 MAX4626/7/8-08 2.5 10 -10 ON-PHASE -80 3 0 ON-LOSS LOGIC THRESHOLD VOLTAGE (V) 0 30k 100k 2 LOGIC THRESHOLD VOLTAGE vs. SUPPLY VOLTAGE MAX4626/7/8-07 -10 -50 1 VCOM (V) FREQUENCY RESPONSE -20 0 TEMPERATURE (°C) TEMPERATURE (°C) LOSS (dB) MAX4626/MAX4627/MAX4628 0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches 2.0 VIN RISING 1.5 1.0 VIN FALLING 0.5 -70 -80 0 2 3 4 5 SUPPLY VOLTAGE (V) _______________________________________________________________________________________ 6 4 5 0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches TOTAL HARMONIC DISTORTION vs. FREQUENCY THD (%) OVERCURRENT RESPONSE 0.01 3V MAX4626/7/810 MAX4626/7/8-09 0.1 VCOM 2V/div 0 3A ICOM 1A/div 0 0.001 10 100 1k 10k 100k FREQUENCY (Hz) 500µs/div Pin Description PIN NAME FUNCTION MAX4626 MAX4627 MAX4628 1 1 1 2 — 2 NO 3 3 3 GND 4 4 5 IN Digital Control Input 5 5 6 V+ Positive Supply Input — 2 — NC Analog Switch—Normally Closed — — 4 IN Inverted Digital Control Input (see MAX4628 Truth Table) COM Analog Switch—Common Analog Switch—Normally Open Ground _______________________________________________________________________________________ 5 MAX4626/MAX4627/MAX4628 Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) MAX4626/MAX4627/MAX4628 0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches Detailed Description Applications Information The MAX4626/MAX4627/MAX4628 are low-on-resistance (R ON ), low-voltage, single-pole/single-throw (SPST) analog switches that operate from a +1.8V to +5.5V single supply. The MAX4626 is normally open (NO), and the MAX4627 is normally closed (NC). The MAX4628 is normally open (NO) and has two control inputs. The MAX4626/MAX4627/MAX4628 logic inputs can be driven up to +5.5V regardless of the supply voltage. For example, with a +3.3V supply, IN or IN may be driven low to 0V and high to 5.5V. Driving IN or IN Rail-to-Rail® minimizes power consumption. When powered from a +5V supply, their 0.5Ω R ON allows high continuous currents to be switched in a variety of applications. In the event of an overcurrent condition, these switches provide both current-limit and thermal-shutdown protection. Current-Limit Protection The MAX4626/MAX4627/MAX4628 feature current-limit protection circuitry. When the voltage drop across the on switch reaches 0.6V (typ), the internal circuitry activates. The current limit is not instantaneous, but rather integrates over time so that current limiting will not activate under momentary short-circuit conditions encountered when the switch output charges a small 0.1µF capacitor. For sustained overcurrent conditions, the switch turns off (opens). The switch turns on after 5ms and, if the overload condition persists, the switch will cycle off and on to produce a pulsed output. A direct short circuit will be detected immediately, and the switch will pulse on for 1µs, then remain off for 5ms. POSITIVE SUPPLY MAX4626 MAX4627 MAX4628 D1 V+ NO COM Logic Inputs Analog Signal Levels Analog signals that range over the entire supply voltage (V+ to GND) can be passed with very little change in on-resistance (see Typical Operating Characteristics). The switches are bidirectional, so the NO, NC, and COM pins can be used as either inputs or outputs. Power-Supply Sequencing and Overvoltage Protection Caution: Do not exceed the absolute maximum ratings; stresses beyond the listed ratings may cause permanent damage to the devices. Proper power-supply sequencing is recommended for all CMOS devices. Always apply V+ before applying analog signals, especially if the analog signal is not current limited. If this sequencing is not possible, and if the analog 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 range to a diode drop (about 0.7V) below V+ (for D1), and a diode drop above ground (for D2). On-resistance increases by a small amount at low supply voltages. Maximum supply voltage (V+) must not exceed +6V. Adding protection diode D2 causes the logic thresholds to be shifted relative to GND. TTL compatibility is not guaranteed when protection diode D2 is added. Protection diodes D1 and D2 also protect against some overvoltage situations. With Figure 1’s circuit, if the supply voltage is below the absolute maximum rating, and if a fault voltage up to the absolute maximum rating is applied to an analog signal pin, no damage will result. Vg GND D2 Figure 1. Overvoltage Protection Using Two External Blocking Diodes 6 Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. _______________________________________________________________________________________ 0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches MAX4626 MAX4627 MAX4628 V+ V+ COM NO OR NC VN_ LOGIC INPUT 50% VINL VOUT RL 50Ω CL 35pF t OFF IN VOUT GND LOGIC INPUT SWITCH OUTPUT 0.9 · V0UT 0.9 · VOUT 0V t ON CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VN_ RL + RON ( t r < 5ns t f < 5ns VINH LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. ) Figure 2. Switching Time V+ MAX4626 MAX4627 MAX4628 ∆VOUT V+ RGEN VOUT COM NC OR NO VOUT IN OFF CL V GEN GND OFF ON IN IN VINL to VINH ON OFF OFF Q = (∆V OUT )(C L ) IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 3. Charge Injection +5V 10nF V OFF-ISOLATION = 20log OUT VIN NETWORK ANALYZER 0V OR V+ V+ IN 50Ω VIN V ON-LOSS = 20log OUT VIN 50Ω COM MAX4626 MAX4627 MAX4628 NO 50Ω USE ONLY FOR ISOLATION VOUT MEAS REF GND 50Ω 50Ω MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND “OFF” NO_ OR NC_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND “ON” NO_ OR NC_TERMINAL ON EACH SWITCH. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. Figure 4. On-Loss and Off-Isolation _______________________________________________________________________________________ 7 MAX4626/MAX4627/MAX4628 Test Circuits/Timing Diagrams Chip Information V+ 10nF MAX4626 MAX4627 MAX4628 V+ TRANSISTOR COUNT: 186 COM IN CAPACITANCE METER f = 1MHz VINL OR VINH NC or NO GND Figure 5. Channel Off/On-Capacitance Package Information SOT5L.EPS MAX4626/MAX4627/MAX4628 0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches 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 © 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.