19-0558; Rev 1; 11/07 Quad SPDT Audio Switches The MAX4740/MAX4740H low on-resistance (0.61Ω typ) analog switches operate from a single 1.6V to 5.5V supply. The MAX4740/MAX4740H are quad, singlepole, double-throw (SPDT) switches and are configured to route audio signals. The MAX4740/MAX4740H are pin-to-pin compatible parts with the ST Microelectronics quad SPDT STG3699 analog switch. The MAX4740 is a quad SPDT switch and the MAX4740H is a quad SPDT switch that can be placed in a high-impedance mode. Switching logic is controlled by 2 control bits (CB1 and CB2). The MAX4740/ MAX4740H also feature a low on-resistance match (0.06Ω) and low power-supply current (0.3µA), which increases battery life. The MAX4740/MAX4740H are available in a tiny 3mm x 3mm, 16-pin TQFN-EP, and 2.5mm x 2.5mm, 16-pin ultrathin QFN packages. Applications Features ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ Low On-Resistance (0.61Ω typ) 0.06Ω (typ) Channel-to-Channel Matching 0.32Ω (typ) On-Resistance Flatness 1.6V to 5.5V Single-Supply Voltage High PSRR Reduces Supply Noise (-60dB typ) 0.08% Total Harmonic Distortion -68dB typ Crosstalk (100kHz) -64dB typ Off-Isolation (100kHz) Low Supply Current (0.3µA typ) Low Leakage Current (0.1µA typ) Pin-to-Pin Compatible with ST Micro STG3699 (3mm x 3mm) 16-Pin TQFN, and (2.5mm x 2.5mm) 16-Pin Ultra-Thin QFN Packages Ordering Information PART PIN-PACKAGE 16 TQFN-EP (3mm x 3mm) 16 Ultra-Thin QFN (2.5mm x 2.5mm) 16 TQFN-EP (3mm x 3mm) 16 Ultra-Thin QFN (2.5mm x 2.5mm) MAX4740ETE+ Voice Switching Cellular Phones MAX4740EVE+ PDAs and other Handheld Devices MAX4740HETE+ MP3 Player Notebook Computers MAX4740HEVE+ Typical Operating Circuit 1.6V to 5.5V TOP MARK PKG CODE AEV T1633-4 +AAA V162A2-1 AEW T1633-4 +AAB V162A2-1 Note: All devices are guaranteed over the -40°C to +85°C temperature range. EP = Exposed pad. Pin Configuration VCC NC3 INTERNAL SPEAKER NO2 CB2 TOP VIEW NC1 NO4 COM1 BASEBAND (SPEECH) COM4 NO1 12 11 10 9 COM2 NC2 CONTROL LOGIC CB1 NC4 13 VCC 14 MAX4740 MAX4740H CB2 NO3 NO1 15 COM1 16 8 COM3 7 NO3 6 GND COM3 COM4 EXTERNAL HEADPHONES NC4 GND MAX4740 1 2 3 4 COM2 + NO4 MIDI (RINGER) *EP NO2 EXTERNAL HEADPHONES CB1 BLOCKING CAPS NC1 NC3 5 3mm x 3mm Thin QFN/ 2.5mm x 2.5mm Ultra-Thin QFN *CONNECT EP TO GND OR LEAVE EP UNCONNECTED. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX4740/MAX4740H General Description MAX4740/MAX4740H Quad SPDT Audio Switches ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) VCC, CB_ ...............................................................-0.3V to +6.0V COM_, NC_, NO_ .......................................-0.3V to (VCC + 0.3V) Continuous Current NO_, NC_, COM_ ..........................±300mA Peak Current NO_, NC_, COM_ (pulsed at 1ms, 50% duty cycle).................................±400mA Peak Current NO_, NC_, COM_ (pulsed at 1ms, 10% duty cycle).................................±500mA Continuous Power Dissipation (TA = +70°C) 16-Pin TQFN (3mm x 3mm), Single-Layer Board (derate 15.6mW/°C above +70°C) ..............................1250mW 16-Pin TQFN (3mm x 3mm), Multilayer Board (derate 20.8mW/°C above +70°C) ..........................................1667mW 16-Pin Ultra-Thin QFN (2.5mm x 2.5mm), MultiLayer Board (derate 11.5mW/°C above +70°C) .................923.8mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C 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 (VCC = +2.7V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = +3.3V.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V POWER SUPPLY Supply Voltage Range VCC Supply Current ICC 1.6 VCC = +5.5V, VCB_ = 0V or VCC 0.3 1 VCC = +5.5V, VCB_ = 0.5V or +1.6V 0.3 5 µA VCC = +2.5V, VCB_ = 0.5V or +1.4V 0.1 VCC V ANALOG SWITCH Analog Signal Range On-Resistance VNC_, VNO_, VCOM_, RON (Note 2) VCC = 3.3V, ICOM_ = 100mA; CB_ = low or high 0 TA = +25°C 0.61 TA = TMIN to TMAX 0.90 1 TA = +25°C Ω 0.06 ΔRON VCC = 3.3V, VNC_ or VNO_ = 0.875V; ICOM_ = 100mA (Note 3) On-Resistance Flatness RFLAT(NO) VCC = 3.3V, VCOM_ = 0 to VCC; ICOM_ = 100mA (Note 4) NO_, NC_ Off-Leakage Current INO_(OFF), INC_(OFF) VCC = 5.5V; VNC_ or VNO_ = 0.3V, 5.5V; VCOM_ = 5.5V or 0.3V -1 0.1 +1 µA COM_ On-Leakage Current ICOM_(ON) VCC = 5.5V, VNC_ or VNO_ = 0.3V, 5.5V, or unconnected; VCOM_ = 0.3V, 5.5V, or unconnected -1 0.1 +1 µA On-Resistance Match Between Channels 2 TA = TMIN to TMAX 0.1 TA = +25°C 0.32 TA = TMIN to TMAX 0.72 0.87 _______________________________________________________________________________________ Ω Ω Quad SPDT Audio Switches MAX4740/MAX4740H ELECTRICAL CHARACTERISTICS (continued) (VCC = +2.7V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 3.3V.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DYNAMIC CHARACTERISTICS Turn-On Time tON RL = 32Ω, CL = 35pF, Figure 2 For NO_, VNO_ = 1V 70 For NC_, VNC_ = 1V 210 Turn-Off Time tOFF RL = 32Ω, CL = 35pF, Figure 2 For NO_, VNO_ = 1V 210 For NC_, VNC_ = 1V 55 ns ns Q VGEN_ = 0V; RGEN = 0Ω; CL = 1nF; Figure 3 200 pC Off-Isolation VISO CL = 5pF; RL = 32Ω; f = 100kHz; VCOM_ = 1VRMS; Figure 4 (Note 5) -64 dB Crosstalk VCT CL = 5pF; RL = 32Ω; f = 100kHz; VCOM_ = 1VRMS; Figure 4 -68 dB Charge Injection Power-Supply Rejection Ratio PSRR f = 20kHz, VCOM_ = 1VRMS, RL = 50Ω, CL = 5pF -60 dB Total Harmonic Distortion THD f = 20Hz to 20kHz, VP-P = 0.5V, RL = 32Ω 0.08 % NO_, NC_ Off-Capacitance CNC_(OFF), f = 1MHz, Figure 5 CNO_(OFF) 40 pF COM_ On-Capacitance CCOM_(ON) f = 1MHz, Figure 5 150 pF DIGITAL INPUTS (CB_) Input Logic-High VIH Input Logic-Low VIL Input Leakage Current IIN VCC = 1.6V to 2.7V 1.4 VCC = 2.7V to 5.5V 1.6 -1 V 0.1 0.5 V +1 µA Note 1: For TQFN (3mm x 3mm) electrical specifications are production tested at TA = +85°C and guaranteed by design at TA = +25°C and -40°C. For Ultra-Thin QFN (2.5mm x 2.5mm) electrical specifications are production tested at TA = +25°C and guaranteed by design at TA = +85°C and -40°C. Note 2: Signals on COM_, NO_, or NC_ exceeding VCC are clamped by internal diodes. Limit forward-diode current to maximum current rating. Note 3: ΔRON = RON(MAX) - RON(MIN). Note 4: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note 5: Off-isolation = 20log10 [VCOM_/ VNO_], VCOM_ = output, VNO_ = input to off switch. _______________________________________________________________________________________ 3 Typical Operating Characteristics (VCC = 3.3V, TA = +25°C, unless otherwise noted) 0.5 TA = +25°C 0.4 TA = -40°C 0.3 0.4 TA = +85°C 600 400 0.3 NC TURN-ON TIME 200 0.2 TA = +25°C TA = -40°C NO TURN-OFF TIME 0 0.1 1.5 2.0 2.5 3.0 0 1 2 3 4 COM VOLTAGE (V) NO TURN-ON/NC TURN-OFF TIME vs. SUPPLY VOLTAGE NO TURN-ON/NC TURN-OFF TIME vs. TEMPERATURE 140 120 100 NO TURN-ON TIME 80 60 100 VCC = 3V NO tON 80 60 NC tOFF 40 2.8 2.8 3.3 3.8 4.3 4.8 400 NC tON 300 200 -15 10 35 60 10 35 60 TEMPERATURE (°C) LOGIC THRESHOLD vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. LOGIC INPUT VOLTAGE CHARGE INJECTION vs. COM VOLTAGE VCB FALLING 0.8 100 90 80 70 VCC = 3V 60 50 40 VCC = 3V VCC = 2.5V 30 20 0.4 10 2.8 3.3 3.8 4.3 SUPPLY VOLTAGE (V) 4.8 5.3 200 VCC = 5.0V VCC = 2.0V 150 100 50 VCC = 2.5V 0 0 85 250 CHARGE INJECTION ( pC) MAX4740/40H toc07 1.2 2.3 -15 TEMPERATURE (°C) VCB RISING 1.8 -40 85 SUPPLY VOLTAGE (V) 1.6 5.3 100 -40 5.3 2.0 4.8 NO tOFF MAX4740/40H toc08 2.3 SUPPLY CURRENT (nA) 1.8 4.3 VCC = 3V 20 20 3.8 500 NC TURN-OFF TIME 40 3.3 NC TURN-ON/NO TURN-OFF TIME vs. TEMPERATURE MAX4740/40H toc05 MAX4740/40H toc04 160 2.3 SUPPLY VOLTAGE (V) COM VOLTAGE (V) 180 1.8 5 MAX4740/40H toc06 1.0 TURN-ON/TURN-OFF TIME (ns) 0.5 TURN-ON/TURN-OFF TIME (ns) 0 MAX4740/40H toc09 0.2 TURN-ON/TURN-OFF TIME (ns) MAX4740/40H toc03 0.5 ON-RESISTANCE (Ω) TA = +85°C VCC = 5V TIME (ns) 0.6 MAX4740/40H toc02 VCC = 3V ON-RESISTANCE (Ω) 0.6 MAX4740/40H toc01 0.7 4 NC TURN-ON/NO TURN-OFF TIME vs. SUPPLY VOLTAGE ON-RESISTANCE vs. COM VOLTAGE ON-RESISTANCE vs. COM VOLTAGE LOGIC THRESHOLD (V) MAX4740/MAX4740H Quad SPDT Audio Switches 0 0 0.5 1.0 1.4 1.5 2.0 LOGIC INPUT VOLTAGE (V) 2.5 3.0 0 1 2 3 VCOM (V) _______________________________________________________________________________________ 4 5 Quad SPDT Audio Switches LEAKAGE CURRENT vs. TEMPERATURE FREQUENCY RESPONSE 100 ON-LOSS (dB) ICOM(OFF) 1000 ICOM(ON) MAX4740/40H toc11 10,000 LEAKAGE CURRENT (pA) 0 MAX4740/40H toc10 100,000 -2 -4 10 1 -6 0.1 -40 -15 10 35 60 0.01 85 0.1 OFF-ISOLATION vs. FREQUENCY 10 100 CROSSTALK vs. FREQUENCY -20 -40 MAX4740/40H toc13 MAX4740/40H toc12 0 -20 CROSSTALK (dB) -60 -40 -60 -80 0.001 0.01 0.1 1 -80 0.001 10 0.01 0.1 1 FREQUENCY (MHz) FREQUENCY (MHz) TOTAL HARMONIC DISTORTION vs. FREQUENCY POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 70 MAX4740/40H toc14 1 60 50 PSRR (dB) RL = 32Ω 0.1 10 MAX4740/40H toc15 OFF-ISOLATION (dB) 0 THD (%) 1 FREQUENCY (MHz) TEMPERATURE (°C) 40 30 20 10 0.01 10 100 1k FREQUENCY (Hz) 10k 100k 0 0.001 0.01 0.1 1 10 FREQUENCY (MHz) _______________________________________________________________________________________ 5 MAX4740/MAX4740H Typical Operating Characteristics (continued) (VCC = 3.3V, TA = +25°C, unless otherwise noted) Quad SPDT Audio Switches MAX4740/MAX4740H Pin Description PIN NAME FUNCTION 1 NC1 2 CB1 Digital Control Input for Analog Switch 1 and Analog Switch 2 3 NO2 Analog Switch 2—Normally Open Terminal 4 COM2 5 NC2 Analog Switch 2—Normally Closed Terminal 6 GND Ground 7 NO3 Analog Switch 3—Normally Open Terminal 8 COM3 Analog Switch 1—Normally Closed Terminal Analog Switch 2—Common Terminal Analog Switch 3—Common Terminal 9 NC3 Analog Switch 3—Normally Closed Terminal 10 CB2 Digital Control Input for Analog Switch 3 and Analog Switch 4 11 NO4 Analog Switch 4—Normally Open Terminal 12 COM4 13 NC4 Analog Switch 4—Normally Closed Terminal 14 VCC Positive Supply Voltage 15 NO1 Analog Switch 1—Normally Open Terminal 16 COM1 EP EP Analog Switch 4—Common Terminal Analog Switch 1—Common Terminal Exposed Pad. Connect to GND or leave unconnected for normal operation. Detailed Description The MAX4740/MAX4740H quad SPDT audio switches are low on-resistance, low supply current, high powersupply rejection ratio (PSRR) devices that operate from a +1.6V to +5.5V single supply. The MAX4740/ MAX4740H have two digital control inputs, CB1 and CB2, where each bit controls a pair of switches (see Tables 1 and 2). Applications Information The MAX4740/MAX4740H logic inputs accept up to +5.5V, regardless of supply voltage. For example with a +3.3V supply, CB1 and CB2 can be driven low to GND and high to +5.5V, allowing for mixed logic levels in a system. Driving CB1 and CB2 rail-to-rail minimizes power consumption. For a 3.3V supply voltage, the logic thresholds are +0.5V (low) and +1.6V (high). Analog Signal Levels Analog signals that range over the entire supply voltage range (V CC to GND) can be passed with very little change in on-resistance (see the Typical Operating Characteristics). The switches are bidirectional, so the NO_, NC_, and COM_ terminals can be used as either inputs or outputs. 6 Table 1. MAX4740 Truth Table CONTROL SWITCH STATE CB2 CB1 Switch 3/4 Switch 1/2 0 0 COM = NC COM = NC 0 1 COM = NC COM = NO 1 0 COM = NO COM = NC 1 1 COM = NO COM = NO Table 2. MAX4740H Truth Table CONTROL SWITCH STATE CB2 CB1 Switch 3/4 Switch 1/2 0 0 COM = NC COM = NC 0 1 High-Z High-Z 1 0 COM = NO COM = NC 1 1 COM = NO COM = NO _______________________________________________________________________________________ Quad SPDT Audio Switches MAX4740/MAX4740H VCC MAX4740H VCC MAX4740 NC1 NC1 SWITCH 1 COM1 Hi Z COM1 SWITCH 1 NO1 NO1 NC2 NC2 SWITCH 2 Hi Z COM2 COM2 NO2 NO2 CB1 CB2 SWITCH 2 CB1 CB2 CONTROL LOGIC CONTROL LOGIC NC3 NC3 SWITCH 3 Hi Z COM3 COM3 SWITCH 3 NO3 NO3 NC4 NC4 COM4 SWITCH 4 COM4 Hi Z SWITCH 4 NO4 NO4 GND GND Figure 1. Functional Diagram Test Circuits/Timing Diagrams MAX4740 MAX4740H VCC VNC_ OR V NO _ NO_ OR NC_ LOGIC INPUT V CC COM_ 50% 0V VOUT RL t OFF CL CB_ GND LOGIC INPUT t r < 5ns t f < 5ns VCC CL INCLUDES FIXTURE AND STRAY CAPACITANCE. VOUT SWITCH OUTPUT 0.8 x V0UT 0.8 x VOUT 0V t ON CB DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 2. Switching Time Power-Supply Sequencing and Overvoltage Protection Caution: Do not exceed the Absolute Maximum Ratings since stresses beyond the listed ratings may cause permanent damage to the device. Proper power-supply sequencing is recommended for all CMOS devices. Improper supply sequencing can force the switch into latch-up, causing it to draw excessive supply current. The only way out of latch-up is to recycle the power and reapply properly. Connect all ground pins first, then apply power to VCC , and finally apply signals to NO_, NC_, and COM_. Follow the reverse order upon power-down. Chip Information PROCESS: BICMOS _______________________________________________________________________________________ 7 MAX4740/MAX4740H Quad SPDT Audio Switches Test Circuits/Timing Diagrams (continued) V CC MAX4740 MAX4740H ΔVOUT VCC RGEN VOUT COM_ NC_ OR NO_ VOUT CB_ OFF CL V GEN GND OFF ON CB_ VIL TO VIH ON OFF CB_ OFF Q = (ΔV OUT )(C L ) LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. Figure 3. Charge injection VCC 1μF NETWORK ANALYZER 0V OR VCC VIN CB_ VCC 50Ω 50Ω OFF-ISOLATION = 20log COM_ OFF-LOSS = 20log NC_ 50Ω MAX4740 MAX4740H VOUT NO_ CROSSTALK = 20log MEAS REF GND 50Ω 50Ω MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AND OPEN AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ OR NC_ TERMINALS. ON-LOSS IS MEASURED BETWEEN COM_ AND ON NO_ OR NC_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. Figure 4. Off-Isolation, On-Loss, and Crosstalk 8 _______________________________________________________________________________________ VOUT VIN VOUT VIN VOUT VIN Quad SPDT Audio Switches VCC COM_ MAX4740 MAX4740H CAPACITANCE ANALYZER f = 1MHz MAX4740/MAX4740H 1μF CB_ VIL OR VIH NC_ OR NO_ GND Figure 5. Channel Off/On-Capacitance _______________________________________________________________________________________ 9 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.) 12, 16L QFN.EPS MAX4740/MAX4740H Quad SPDT Audio Switches PACKAGE OUTLINE, 12,16L QFN, 3x3x0.90 MM 21-0102 10 ______________________________________________________________________________________ G 1 2 Quad SPDT Audio Switches PACKAGE OUTLINE, 12,16L QFN, 3x3x0.90 MM 21-0102 G 1 2 ______________________________________________________________________________________ 11 MAX4740/MAX4740H Package Information (continued) (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.) Package Information (continued) (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.) ULTRA THIN QFN.EPS MAX4740/MAX4740H Quad SPDT Audio Switches DETAIL B DETAIL A DETAIL A 12 DETAIL B ______________________________________________________________________________________ Quad SPDT Audio Switches REVISION NUMBER REVISION DATE 0 5/06 Initial release 1 11/07 Adding ultra-thin QFN package DESCRIPTION PAGES CHANGED — 1, 2, 3, 10–13 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 ____________________ 13 © 2007 Maxim Integrated Products Boblet is a registered trademark of Maxim Integrated Products, Inc. MAX4740/MAX4740H Revision History