19-2365; Rev 4; 3/09 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers The MAX4780/MAX4784 are low on-resistance, lowvoltage, quad 2:1 analog multiplexers that operate from a single +1.6V to +4.2V supply. These devices have fast switching speeds (tON = 20ns, tOFF = 8ns), handle rail-to-rail analog signals, and consume less than 1µW of quiescent power. When powered from a +2.7V supply, the MAX4780/ MAX4784 feature low 0.7Ω on-resistance (RON), and 0.1Ω R ON flatness. The digital logic input is +1.8V CMOS-logic compatible when using a single +3V supply. The MAX4780/MAX4784 are available in 16-pin TSSOP and 3mm x 3mm thin QFN packages. Features ♦ Single-Supply Operation from 1.6V to 4.2V ♦ Low RON 0.7Ω (+2.7V Supply) 2Ω (+1.8V Supply) ♦ 0.1Ω RON Flatness (+2.7V Supply) ♦ 3mm x 3mm Thin QFN Package ♦ +1.8V CMOS Logic Compatible ♦ Fast Switching: tON = 20ns, tOFF = 8ns Applications Power Routing Ordering Information Battery-Powered Systems PART Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits PCMCIA Cards Cellular Phones TEMP RANGE PIN-PACKAGE MAX4780ETE -40°C to +85°C 16 Thin QFN-EP* MAX4780EUE -40°C to +85°C 16 TSSOP MAX4784ETE -40°C to +85°C 16 Thin QFN-EP* MAX4784EUE -40°C to +85°C 16 TSSOP *EP = Exposed pad. Modems Hard Drives Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW NC1 A0 V+ A1 16 15 14 13 NO1 1 12 NC4 COM1 2 11 NO4 MAX4780 NC2 3 10 COM4 NO2 4 9 NC3 5 6 7 8 COM2 GND COM3 NO3 EN 1 0 0 A0 0 1 MAX4780 ON SWITCH NC1, NC2 NO1, NO2 A1 0 1 ON SWITCH NC3, NC4 NO3, NO4 MAX4784 A0 ON SWITCH X NONE COM1-NC1 COM2-NC2 0 COM3-NC3 COM4-NC4 COM1-NO1 COM2-NO2 1 COM3-NO3 COM4-NO4 NC1 A0 V+ EN 16 15 14 13 CONTROL LOGIC NO1 1 12 NC4 COM1 2 11 NO4 NC2 3 10 COM4 NO2 4 9 NC3 MAX4784 THIN QFN-EP 5 6 7 8 COM2 GND COM3 NO3 THIN QFN-EP Pin Configurations/Functional Diagrams/Truth Tables continued at end of data sheet. ________________________________________________________________ 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 MAX4780/MAX4784 General Description MAX4780/MAX4784 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND V+, A_, EN ..........................................................-0.3V to +4.6V COM_, NO_, NC_ (Note 1) ........................-0.3V to (V+ + 0.3V) Continuous Current COM_ , NO_, NC_ .........................±300mA Peak Current COM_, NO_, NC_ (pulsed at 1ms 10% duty cycle)..................................±500mA Continuous Power Dissipation (TA = +70°C) 16-Pin Thin QFN (derate 14.7mW/°C above +70°C)......................................................1176.5mW 16-Pin TSSOP (derate 9.4mW/°C above +70°C) .........755mW Operating Temperature Range ...........................-40°C to +85°C Maximum Junction Temperature .....................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Note 1: Signals on COM_, NO_, or NC_ exceeding V+ or GND are clamped by internal diodes. Limit forward 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—Single +3V Supply (V+ = +2.7V to +4.2V, VIH = +1.4V, VIL = +0.5V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at V+ = +3.0V, TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog Signal Range On-Resistance (Note 4) On-Resistance Match Between Channels (Notes 4, 5) RON ΔRON 0 V+ = 2.7V, ICOM_ = 100mA, VNO_ or VNC_ = 1.5V V+ = 2.7V, ICOM_ = 100mA, VNO_ or VNC_ = 1.5V V+ = 2.7V, ICOM_ = 100mA; VNO_ or VNC_ = 1V, 1.5V, 2V On-Resistance Flatness (Note 6) RFLAT(ON) NO_ or NC_ Off-Leakage Current (Note 7) INO_(OFF), INC_(OFF) V+ = 3.6V; VCOM_ = 0.3V, 3.3V; VNO_ or VNC_ = 3.3V, 0.3V ICOM_(OFF) V+ = 3.6V; VCOM_ = 0.3V, 3.3V; VNO_ or VNC_ = 3.3V, 0.3V, or unconnected COM_ Off-Leakage Current (MAX4784 Only) (Note 7) COM_ On-Leakage Current (Note 7) 2 VCOM_, VNO_, VNC_ ICOM_(ON) V+ = 3.6V; VCOM_ = 3.3V, 0.3V; VNO_ or VNC_ = 3.3V, 0.3V, or unconnected +25°C 0.7 1 Ω TMIN to TMAX 1.2 +25°C 0.1 0.15 Ω TMIN to TMAX 0.2 +25°C 0.1 0.2 Ω TMIN to TMAX 0.3 +25°C -1 TMIN to TMAX -5 +25°C -1 TMIN to TMAX -5 +25°C -2 TMIN to TMAX -10 ±0.002 +1 nA +5 ±0.002 +1 nA +5 ±0.002 +2 nA _______________________________________________________________________________________ +10 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers (V+ = +2.7V to +4.2V, VIH = +1.4V, VIL = +0.5V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at V+ = +3.0V, TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX 20 25 UNITS SWITCH DYNAMIC CHARACTERISTICS Turn-On Time tON Turn-Off Time tOFF Break-Before-Make (Note 8) Charge Injection tBBM Q NO_ or NC_ Off-Capacitance VNO_, VNC_ = 1.5V, RL = 50Ω, CL = 35pF, Figure 1 VNO_, VNC_ = 1.5V, RL = 50Ω, CL = 35pF, Figure 1 VNO_, VNC_ = 1.5V, RL = 50Ω, CL = 35pF, Figure 2 +25°C ns TMIN to TMAX 30 +25°C 8 10 ns TMIN to TMAX 18 +25°C 7 ns TMIN to TMAX 1 VGEN = 0, RGEN = 0, CL = 1.0nF, Figure 3 +25°C 5 pC COFF f = 1MHz, Figure 4 +25°C 33 pF COM_ Off-Capacitance CCOM_(OFF) f = 1MHz, Figure 4 +25°C 60 pF COM_ On-Capacitance CCOM_(ON) f = 1MHz, Figure 4 +25°C 85 pF 123 MHz -3dB On-Channel Bandwidth BW Signal = 0, RIN = ROUT = 50Ω, CL = 5pF, Figure 5 Off-Isolation (Note 9) VISO f = 1MHz, VCOM_ = 1VP-P, RL = 50Ω, CL = 5pF, Figure 5 +25°C -67 dB Crosstalk (Note 10) VCT f = 1MHz, VCOM_ = 1VP-P, RL = 50Ω, CL = 5pF, Figures 4, 5 +25°C -95 dB Total Harmonic Distortion THD f = 20Hz to 20kHz, VCOM_ = 2VP-P, RL = 32Ω +25°C 0.008 % LOGIC INPUT (A_, EN) Input Logic-High VIH Input Logic-Low VIL Input Leakage Current IIN 1.8 V EN = 0 or +3.6V, VA0 = 0 or +3.6V -1 V 0.005 0.5 V +1 µA 3.6 V 2 µA POWER SUPPLY Power-Supply Range V+ Positive Supply Current I+ 1.6 V+ = 3.6V, EN, A0 = 0 or V+, all channels on or off TMIN to TMAX _______________________________________________________________________________________ 3 MAX4780/MAX4784 ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued) MAX4780/MAX4784 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers ELECTRICAL CHARACTERISTICS—Single +1.8V Supply (V+ = +1.8V, VIH = +1.0V, VIL = +0.4V, TA = TMIN to TMAX, unless otherwise specified. 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 VCOM_, VNO_, VNC_ 0 RON ICOM_ = 10mA, VNO_ or VNC_ = 1.0V NO_ or NC_ Off-Leakage Current (Note 7) INO_(OFF), INC_(OFF) VCOM_ = 0.3V, 1.5V; VNO_ or VNC_ = 1.5V, 0.3V COM_ Off-Leakage Current (MAX4784 Only) (Note 7) ICOM_(OFF) VCOM_ = 0.3V, 1.5V; VNO_ or VNC_ = 1.5V, 0.3V COM_ On-Leakage Current (Note 7) ICOM_(ON) On-Resistance VCOM_ = 0.3V, 1.5V; VNO_ or VNC_ = 0.3V, 1.5V, or unconnected +25°C 2 TMIN to TMAX 3 5 +25°C -1 +1 TMIN to TMAX -5 +5 +25°C -1 +1 TMIN to TMAX -5 +5 +25°C -2 +2 TMIN to TMAX -10 +10 Ω nA nA nA SWITCH DYNAMIC CHARACTERISTICS Turn-On Time Turn-Off Time Break-Before-Make (Note 8) Charge Injection 4 tON tOFF tBBM Q VNO_, VNC_ = 1.0V, RL = 50Ω, CL = 35pF, Figure 1 VNO_, VNC_ = 1.0V, RL = 50Ω, CL = 35pF, Figure 1 VNO_, VNC_ = 1.0V, RL = 50Ω, CL = 35pF, Figure 2 VGEN = 0, RGEN = 0, CL = 1nF, Figure 3 +25°C 25 30 ns TMIN to TMAX 35 +25°C 10 15 ns TMIN to TMAX 20 +25°C 10 ns TMIN to TMAX +25°C 1 5 _______________________________________________________________________________________ pC 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers (V+ = +1.8V, VIH = +1.0V, VIL = +0.4V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS LOGIC INPUT (A_, EN) Input Logic-High VIH Input Logic-Low VIL Input Leakage Current 1.8 V EN = 0 or +3.6V, VA0 = 0 or +3.6V IIN V 0.4 V +1 µA -1 The algebraic convention, where the most negative value is a minimum and the most positive value is a maximum, is used in this data sheet. Note 3: -40°C specifications are guaranteed by design. Note 4: RON and ΔRON matching specifications for QFN packaged parts are guaranteed by design. Note 5: ΔRON = RON(MAX) - RON(MIN). Note 6: Flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured over the specified analog signal ranges. Note 7: Leakage parameters are 100% tested at TA = +85°C, and guaranteed by correlation over the full rated temperature range. Note 8: Guaranteed by design. Note 9: Off-isolation = 20log10(VCOM_/VNO_), VCOM_ = output, VNO_ = input to off switch. Note 10: Between two switches. Note 11: Parts are guaranteed to 1 million cycles of operation. (Cycle = switch on → switch off → switch on.) Note 12: The minimum load resistance is 8Ω. (See the Typical Application Circuit.) Note 2: Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) 1.5 V+ = +2.5V V+ = +2.7V 1.0 V+ = +1.8V, TA = +25°C 1.4 V+ = +1.8V, TA = +85°C 1.2 V+ = +3.0V, TA = +85°C 1.0 0.8 0.6 0.4 0.5 V+ = +3.0V V+ = +3.6V 0 0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 VCOM (V) V+ = +3.0V, TA = -40°C 0.2 MAX4780/MAX4784 toc03 1.6 10,000 OFF, V+ = +3.0V LEAKAGE CURRENT (pA) V+ = +1.8V RON (Ω) RON (Ω) 2.0 1.8 V+ = +1.8V, TA = -40°C MAX4780/MAX4784 toc02 V+ = +1.6V 2.5 2.0 MAX4780/MAX4784 toc01 3.0 ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE ON-RESISTANCE vs. VCOM AND TEMPERATURE ON-RESISTANCE vs. VCOM 1000 ON, V+ = +3.0V 100 ON, V+ = +1.8V OFF, V+ = +1.8V 10 V+ = +3.0V, TA = +25°C 1 0 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 3.0 -40 -15 10 35 60 85 TEMPERATURE (°C) _______________________________________________________________________________________ 5 MAX4780/MAX4784 ELECTRICAL CHARACTERISTICS—Single +1.8V Supply (continued) Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) LOGIC-LEVEL THRESHOLD vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE 30 V+ = +3.0V 20 TA = +85°C 1.0 RISING 0.9 10 TA = +25°C 1 MAX4780/MAX4784 toc06 1000 100 1.1 MAX4780/MAX4784 toc05 40 10,000 SUPPLY CURRENT (nA) MAX4780/MAX4784 toc04 50 THRESHOLD (V) CHARGE INJECTION vs. VCOM 0.1 0.8 0.7 FALLING 0.6 TA = -40°C 0.01 V+ = +1.8V 0.5 0.001 0 0 0.5 1.0 1.5 2.0 2.5 0.4 0 3.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 1.6 45 40 45 40 35 30 25 20 tON 15 tON, V+ = +3.0V 25 20 tOFF, V+ = +1.8V 10 tOFF 5 5 0 tOFF, V+ = +3.0V 0 2.0 2.4 2.8 3.2 -15 10 35 60 TEMPERATURE (°C) FREQUENCY RESPONSE TOTAL HARMONIC DISTORTION vs. FREQUENCY ON-RESPONSE -15 0.05 OFF-ISOLATION -60 RL = 32Ω 0.04 THD (%) -30 -45 -40 MAX4780/MAX4784 toc09 0 3.6 SUPPLY VOLTAGE (V) 15 LOSS (dB) tON, V+ = +1.8V 30 15 10 3.2 50 tON/tOFF (ns) tON/tOFF (ns) 35 2.8 TURN-ON/OFF TIMES vs. TEMPERATURE MAX4780/MAX4784 toc07 50 2.4 SUPPLY VOLTAGE (V) TURN-ON/OFF TIME vs. SUPPLY VOLTAGE 1.6 2.0 SUPPLY VOLTAGE (V) VCOM (V) MAX4780/MAX4784 toc08 10 V+ = +1.8V, VCOM = +1.2VP-P 0.03 85 MAX4780/MAX4784 toc10 Q (pC) MAX4780/MAX4784 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers 0.02 CROSSTALK -75 -90 V+ = +3.0V, VCOM = +2VP-P 0.01 -105 -120 0.01 0 0.1 1 10 FREQUENCY (MHz) 6 100 1000 10 100 1k 10k FREQUENCY (Hz) _______________________________________________________________________________________ 100k 3.6 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers PIN MAX4780 MAX4784 TSSOP THIN QFN-EP TSSOP THIN QFN-EP 1 2 15 16 1 2 15 16 3 1 3 4 2 4 5 6 3 4 7 8 9 10 FUNCTION NAME A0 NC1 Address Input Normally Closed Terminal 1 NO1 Normally Open Terminal 2 COM1 5 6 3 4 NC2 NO2 5 7 5 COM2 6 8 6 GND 7 8 9 10 7 8 COM3 NO3 11 9 11 9 NC3 12 10 12 10 COM4 13 14 11 12 13 14 11 12 NO4 NC4 15 13 — — A1 Address Input — — 15 13 EN Enable. Connect to GND for normal operation. Connect to logic-level high to turn all switches off. 16 14 16 14 V+ Positive Supply Voltage — — — — EP Exposed Pad. Internally connected to GND. Connect to a large ground plane to maximize thermal performance. Not intended as an electrical connection point. (Thin QFN package only.) Analog Switch Common Terminal Normally Closed Terminal Normally Open Terminal Analog Switch Common Terminal Ground Analog Switch Common Terminal Normally Open Terminal Normally Closed Terminal Analog Switch Common Terminal Normally Open Terminal Normally Closed Terminal Detailed Description The MAX4780/MAX4784 are low 0.7Ω (at V+ = +2.7V) on-resistance, low-voltage, quad 2:1 analog multiplexers/ demultiplexers that operate from a +1.6V to +4.2V single supply. CMOS switch construction allows switching analog signals that are within the supply voltage range (GND to V+). When powered from a +2.7V supply, the 0.7Ω R ON allows high continuous currents to be switched in a variety of applications. Applications Information 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, followed by NO_, NC_, or COM_. Although it is not required, power-supply bypassing improves noise margin and prevents switching noise propagation from the V+ supply to other components. A 0.1µF capacitor, connected from V+ to GND, is adequate for most applications. Typical Application Circuit RING TONE/ MELODY IC MAX4780 INTERNAL SPEAKER RL = 8Ω AUDIO CODEC EXTERNAL SPEAKER RL = 8Ω OR 32Ω SYSTEM CONTROLLER VCC 1.6V TO 4.2V _______________________________________________________________________________________ 7 MAX4780/MAX4784 Pin Description MAX4780/MAX4784 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers Logic Inputs The MAX4780/MAX4784 logic inputs can be driven up to +4.2V regardless of the supply voltage. For example, with a +1.8V supply, A_ and EN may be driven low to GND and high to +4.2V. Driving A_ and EN rail-to-rail minimizes power consumption. Drive EN low to enable the COM_ outputs. When EN is high, the COM_ outputs are high impedance. 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 the Typical Operating Characteristics). The switches are bidirectional, so the NO_, NC_, and COM_ pins can be used as either inputs or outputs. Layout High-speed switches require proper layout and design procedures for optimum performance. Reduce stray inductance and capacitance by keeping traces short and wide. Ensure that bypass capacitors are as close to the device as possible. Use large ground planes where possible. Test Circuits/Timing Diagrams V+ VA0 VIH + 0.5V VA0 V+ A0 NO MAX4780/ MAX4784 EN** tR < 5ns tF < 5ns 50% 0 VNO_ VOUT 90% NC COM VOUT GND CL* RL GND tOFF tON *CL INCLUDES STRAY CAPACITANCE. **MAX4784 ONLY. Figure 1. Turn-On and Turn-Off Times V+ VA0 VIH + 0.5V VA0 V+ NC, NO A0 VN_ _ tR < 5ns tF < 5ns 50% 0 MAX4780/ MAX4784 EN** VCOM 90% VOUT COM GND RL CL* VOUT 0 *CL INCLUDES STRAY CAPACITANCE. **MAX4784 ONLY. tBBM Figure 2. Break-Before-Make Interval 8 _______________________________________________________________________________________ 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers V+ V+ RGEN V+ V+ OR GND VEN NC, NO A0 0 VGEN MAX4780/ MAX4784 VEN EN** Δ VOUT VOUT VOUT COM GND CL * Δ VOUT IS THE MEASURED VOLTAGE DUE TO CHARGETRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q = Δ VOUT ✕ CL *CL INCLUDES STRAY CAPACITANCE. **MAX4784 ONLY. Figure 3. Charge Injection V+ V+ NC, NO A0 V+ OR GND MAX4780/ MAX4784 EN* 1MHz CAPACITANCE ANALYZER COM GND *MAX4784 ONLY. Figure 4. Capacitance V+ 10nF VIN V+ V+ OR GND NETWORK ANALYZER 50Ω 50Ω OFF-ISOLATION = 20log NC, NO A0 MAX4780/ MAX4784 ON-LOSS = 20log VOUT EN* COM MEAS REF CROSSTALK = 20log GND 50Ω 50Ω VOUT VIN VOUT VIN VOUT VIN NOTES: MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM AND "OFF" NO TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM AND "ON" NO TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. *MAX4784 ONLY. Figure 5. Off-Isolation, On-Loss, and Crosstalk _______________________________________________________________________________________ 9 MAX4780/MAX4784 Test Circuits/Timing Diagrams (continued) 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers MAX4780/MAX4784 Pin Configurations/Functional Diagrams/Truth Tables (continued) TOP VIEW MAX4780 MAX4784 A0 1 16 V+ A0 1 NC1 2 15 A1 NC1 2 15 EN NO1 3 14 NC4 NO1 3 14 NC4 COM1 4 13 NO4 COM1 4 13 NO4 CONTROL LOGIC NC2 5 12 COM4 NC2 5 12 COM4 NO2 6 11 NC3 NO2 6 11 NC3 COM2 7 10 NO3 COM2 7 10 NO3 9 GND 8 COM3 TSSOP 9 GND 8 10 COM3 TSSOP Package Information Chip Information PROCESS: CMOS 16 V+ For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 16 TQFN T1633+4 21-0136 16 TSSOP U16+2 21-0066 ______________________________________________________________________________________ 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers PAGES CHANGED REVISION NUMBER REVISION DATE 0 4/02 Initial release 1 1/04 Added MAX4780 — 2 9/04 Changed Ab max voltage — 3 12/04 Change operation to 4.2V 4 3/09 Added exposed pad information DESCRIPTION — — 1, 2, 4, 7, 10, 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 ____________________ 11 © 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc. MAX4780/MAX4784 Revision History