19-1880; Rev 1; 1/07 25Ω SPST Analog Switches in SOT23-6 The MAX4647/MAX4648 are dual-supply single-pole/single-throw (SPST) switches. On-resistance is 25Ω max and flat (2Ω max) over the specified signal range. Each switch can handle rail-to-rail analog signals. Off-leakage current is only 1nA max at +25°C. They conduct analog or digital signals equally well in either direction. The primary application areas are in the switching and routing of signals in telecommunications and test equipment. The MAX4647/MAX4648 are single SPST analog switches. The MAX4647 has one normally closed (NC) switch, and the MAX4648 has one normally open (NO) switch. These devices operate from a single +9V to +36V supply or from dual ±4.5V to ±20V supplies. The MAX4647/MAX4648 are available in tiny 6-pin SOT23 packages. ____________________________Features ♦ Low On-Resistance 25Ω max (±15V Supplies) ♦ Guaranteed RON Flatness Over Specified Signal Range (2Ω max) ♦ VL Logic Supply Not Required ♦ Rail-to-Rail Signal Handling ♦ ±15V and Single 12V Supply Operation ♦ Low Leakage (1nA max) ♦ Fast Switching Speeds tON = 100ns tOFF = 100ns ________________________Applications PBX, PABX Systems Ordering Information Communication Systems TEMP RANGE PART DSL PINTOP PKG PACKAGE MARK CODE Test Equipment MAX4647EUT-T+ -40°C to +85°C 6 SOT23 AARV U6SN-1 Avionics MAX4648EUT-T+ -40°C to +85°C 6 SOT23 AARW U6SN-1 Audio Systems +Denotes a lead-free package. Redundant Systems Relay Replacement PC Multimedia Boards Pin Configurations/Functional Diagrams/Truth Tables MAX4647 TOP VIEW MAX4648 NC 1 6 COM NO 1 6 COM V- 2 5 V+ V- 2 5 V+ IN 3 4 GND IN 3 4 GND SOT23-6 LOGIC 0 1 SWITCH ON OFF SOT23-6 LOGIC 0 1 SWITCH OFF ON ________________________________________________________________ Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX4647/MAX4648 General Description MAX4647/MAX4648 25Ω SPST Analog Switches in SOT23-6 ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND) V+ ...........................................................................-0.3V, +44.0V V- ............................................................................-44.0V, +0.3V V+ to V-................................................................-0.3V to +44.0V All Other Pins (Note 1)...............................V- - 0.3V to V+ + 0.3V Continuous Current into Any Terminal..............................±60mA Peak Current into Any Terminal (pulsed at 1ms, 10% duty cycle)...............................±100mA Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23 (derate 8.7mW/°C above +70°C)...........696mW Operating Temperature Ranges MAX464_EUT..................................................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C Note 1: Signals on NO, NC, COM, or IN exceeding V+ or V- 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—Dual ±15V 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, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog Signal Range VNO,VNC, VCOM V+25°C 18 25 RON ICOM = 10mA; VNO or VNC = ±10V On-Resistance Flatness (Note 4) RFLAT(ON) ICOM = 10mA; VNO or VNC = +5V, 0, -5V TMIN to TMAX NO or NC Off-Leakage Current INO(OFF) or INC(OFF) VNO or VNC = +14V, -14V; VCOM = -14V, +14V +25°C -1 TMIN to TMAX -10 COM Off-Leakage Current ICOM(OFF) VCOM = -14V, +14V; VNO or VNC = +14V, -14V +25°C -1 TMIN to TMAX -10 10 +25°C -2 2 ICOM(ON) VCOM = +14V, -14V; VNO or VNC = +14V, -14V or floating TMIN to TMAX -20 20 2.4 On-Resistance COM On-Leakage Current TMIN to TMAX 30 +25°C 0.8 2 3 0.01 1 10 0.01 1 Ω Ω nA nA nA LOGIC INPUT Input Logic High VIH TMIN to TMAX Input Logic Low VIL TMIN to TMAX Input Leakage Current IIN VIN = 0 or +5V TMIN to TMAX TMIN to TMAX V -1 0.8 V 1 µA DYNAMIC CHARACTERISTICS Turn-On Time tON VNO or VNC = ±10V; R L = 300Ω; CL = 35pF; Figure 2 Turn-Off Time tOFF VNO or VNC = ±10V; R L =300Ω; CL = 35pF; Figure 2 Charge Injection 2 Q COM = 0; RS = 0; CL = 1nF; Figure 3 +25°C +25°C 68 125 62 TMIN to TMAX +25°C 100 100 125 4 _______________________________________________________________________________________ ns ns pC 25Ω SPST Analog Switches in SOT23-6 (V+ = +15V, V- = -15V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at T A = +25°C. (Notes 2, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS Off-Isolation VISO CL = 5pF; RL = 50Ω; f = 1MHz; VCOM = 1VRMS; Figure 4 +25°C -92 dB Total Harmonic Distortion THD RL = 600Ω, 5Vp-p, f = 20Hz to 20kHz +25°C 0.006 % VNO or VNC Off-Capacitance CNO(OFF), CNC(OFF) f = 1MHz; Figure 5 +25°C 6 pF COM Off-Capacitance CCOM(OFF) f = 1MHz; Figure 5 +25°C 6 pF COM On-Capacitance CCOM(ON) f = 1MHz; Figure 6 +25°C 19 pF POWER SUPPLY Power Supply Range TMIN to TMAX VIN = 5V Positive Supply Current I- ±20 45 VIN = 0 or 5V 150 +25°C V 100 TMIN to TMAX I+ VIN = 0 or V+ Negative Supply Current ±4.5 +25°C 0.001 TMIN to TMAX 1 µA 10 +25°C 0.001 TMIN to TMAX 1 µA 10 ELECTRICAL CHARACTERISTICS—Single +12V 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.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Flatness (Note 4) VNO, VNC, VCOM RON RFLAT(ON) 0 +25°C ICOM = 10mA; VNO or VNC = +10V TMIN to TMAX ICOM = 10mA; VNO or VNC = +2V, +6V, +10V TMIN to TMAX TMIN to TMAX +25°C 36 45 60 4 6 8 Ω Ω DYNAMIC Turn-On Time tON VNO or VNC = +10V; RL = 300Ω; CL = 35pF; Figure 2 Turn-Off Time tOFF VNO or VNC = +10V; RL = 300Ω; CL = 35pF; Figure 2 Charge Injection Q COM = 0; RS = 0; CL = 1nF; Figure 3 +25°C +25°C 100 68 TMIN to TMAX +25°C 175 225 150 200 -5 ns ns pC ________________________________________________________________________________________ 3 MAX4647/MAX4648 ELECTRICAL CHARACTERISTICS—Dual ±15V Supplies (continued) ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued) (V+ = +12V, V- = 0, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS Power Supply Range MIN TMIN to TMAX +9 TYP +25°C VIN = 5V Positive Supply Current TA 20 +36 V 75 +25°C VIN = 0 or V+ UNITS 50 TMIN to TMAX I+ MAX 0.001 µA 1 TMIN to TMAX 10 Note 2: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. 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 value of on-resistance as measured over the specified analog signal range. Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) ON-RESISTANCE vs. VCOM (SINGLE SUPPLY) A 30 B C 25 D 20 MAX4647/48 toc02 20 30 20 5 10 -10 0 10 V+ = +15V V- = -15V 0 0 20 TA = -40°C V+ = +36V 15 -20 TA = +25°C 15 10 V+ = +24V E 10 10 20 30 -15 -10 -5 0 5 10 VCOM (V) VCOM (V) VCOM (V) ON-RESISTANCE vs. VCOM AND TEMPERATURE (SINGLE SUPPLY) ON-LEAKAGE CURRENT vs. TEMPERATURE OFF-LEAKAGE CURRENT vs. TEMPERATURE ON-LEAKAGE (nA) TA = +85°C 40 35 1 TA = +25°C 30 0.1 0.01 DUAL SUPPLIES 0.001 TA = -40°C 0.0001 20 15 10 VCOM (V) V+ = +15V V- = -15V VNC OR VNO = ±10V VCOM = 10V 0.1 0.01 DUAL SUPPLIES SINGLE SUPPLY SINGLE SUPPLY 0.00001 5 1 0.001 25 0 15 MAX4647/48 toc06 45 V+ = +15V V- = -15V VCOM = ±10V OFF-LEAKAGE (nA) V+ = +12V V- = O 50 10 MAX4647/48 toc04 55 RON (Ω) TA = +85°C V+ = +12V 35 25 15 4 25 RON (Ω) 35 40 30 MAX4647/48 toc05 RON (Ω) 40 V+ = +9V 45 RON (Ω) A: V+ = +8, V- = -8V B: V+ = +10V, V- = -10V C: V+ = +12V, V- = -12V D: V+ = +15V, V- = -15V E: V+ = +20V, V- = -20V 45 50 MAX4647/48 toc01 50 ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES) MAX4647/48 toc03 ON-RESISTANCE vs. VCOM (DUAL SUPPLIES) ± MAX4647/MAX4648 25Ω SPST Analog Switches in SOT23-6 15 0.0001 -40 -20 0 20 40 TEMPERATURE (°C) 60 80 -40 -20 0 20 40 TEMEPERATURE (°C) _______________________________________________________________________________________ 60 80 25Ω SPST Analog Switches in SOT23-6 TOTAL HARMONIC DISTORTION vs.FREQUENCY -20 LOSS (dB) -40 1 DISTORTION (%) -30 OFF-ISOLATION -50 -60 0.1 SIGNAL DISTORTION 0.01 -70 -80 V+ = +15V V- = -15V 5VRMS SIGNAL 600Ω SOURCE AND LOAD 10 MEASUREMENT LIMITS 0.001 V+ = +15V V- = -15V IN = 5V 10 I+, I-, IGND (µA) ON-RESPONSE SUPPLY CURRENT vs. TEMPERATURE 100 MAX4647/48 toc08 -10 100 MAX4647/48 toc07 0 I+, IGND MAX4647/48 toc09 FREQUENCY RESPONSE 1 0.1 I- 0.01 -90 -100 0.0001 1 10 100 1000 10k 100k -40 -15 10 35 60 TEMPERATURE (°C) SUPPLY CURRENT vs. LOGIC THRESHOLD CHARGE INJECTION vs. VCOM LOGIC THRESHOLD vs. SUPPLY VOLTAGE 30 V+ = +15V V- = -15V VCOM = +14V 0.001 A 10 0 B -10 -20 0.0001 0.00001 -30 0.000001 -40 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 IN (V) 5.0 4.5 4.0 LOGIC THRESHOLD (V) 20 CHARGE (pC) 1 A: V+ = +15V, V- = -15V B: V+ = +12V, V- = 0 85 MAX4647/48 toc12 40 MAX4647/48 toc10 10 I+ (µA) 1k FREQUENCY (Hz) 100 0.01 100 FREQUENCY (MHz) 1000 0.1 0.001 10 MAX4647/48 toc11 0.1 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 -15 -10 -5 0 5 10 15 VCOM (V) 0 10 20 30 V+ (V) Pin Description MAX4647 MAX4648 PIN NAME FUNCTION 1 — NC Normally Closed Switch Terminal — 1 NO Normally Open Switch Terminal 2 2 V- Negative Supply Voltage Input 3 3 IN Digital Control Input 4 4 GND 5 5 V+ 6 6 COM Ground Positive Supply Voltage Input Analog Switch Common _______________________________________________________________________________________ 5 MAX4647/MAX4648 Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) MAX4647/MAX4648 25Ω SPST Analog Switches in SOT23-6 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 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 Vshould not exceed 44V. These protection diodes are not recommended when using a single supply. 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. V+ V+ NO COM Vg V- Off-Isolation at High Frequencies In 50Ω systems, the high-frequency on-response of these parts extends from DC to above 300MHz, 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 D1 V- Figure 1. Overvoltage Protection Using External Blocking Diodes V+ LOGIC INPUT t r < 20ns t f < 20ns +3V 50% V COM COM VO 0.9V0 0.9V0 t ON LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. LOGIC INPUT VO RL 300Ω IN 0 SWITCH OUTPUT NO OR NC t OFF SWITCH OUTPUT MAX4647 MAX4648 V+ SWITCH INPUT 0 MAX4647 MAX4648 D2 GND V- 0 V- REPEAT TEST FOR EACH SWITCH. FOR LOAD CONDITIONS, SEE Electrical Characteristics. CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VO = VCOM RL + RON ( ) Figure 2. Switching-Time Test Circuit 6 _______________________________________________________________________________________ CL 35pF 25Ω SPST Analog Switches in SOT23-6 V+ MAX4647/MAX4648 MAX4647 MAX4648 ∆VO V+ RGEN VO COM NC OR NO VO VIN CL V GEN GND IN OFF V- VIN VIN = +3V OFF ON V- ON OFF OFF Q = (∆V O )(C L ) VIN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 3. Charge Injection Test Circuit MAX4647 MAX4648 V+ C SIGNAL GENERATOR MAX4647 MAX4648 V+ C V+ V+ COM COM IN ANALYZER 0 OR 3V NC OR NO GND 0 OR 3V NC OR NO V- RL V- Figure 4. Off-Isolation Test Circuit IN CAPACITANCE METER C f = 1MHz GND V- C V- Figure 5. Channel-Off Capacitance Test Circuit ________________________________________________________________________________________ 7 25Ω SPST Analog Switches in SOT23-6 MAX4647/MAX4648 Chip Information TRANSISTOR COUNT: 24 PROCESS TECHNOLOGY: CMOS C MAX4647 MAX4648 +15V V+ COM CAPACITANCE METER IN 0 OR 3V f = 1MHz NC OR NO GND V- C -15V Figure 6. Channel-On Capacitance Test Circuit 8 _______________________________________________________________________________________ 25Ω SPST Analog Switches in SOT23-6 6LSOT.EPS Revision History Pages changed at Rev 1: 1, 9 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9 © 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc. MAX4647/MAX4648 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)