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19-2240; Rev 0; 10/01
Low-Voltage, 60, 4:1 Analog Multiplexer in QFN
General Description
The MAX4704 low-voltage, 4-channel analog multiplexer operates from a single +1.8V to +5.5V supply. The MAX4704 features break-before-make switching action with a tON = 60ns and tOFF = 20ns at +3V. When powered from a +2.7V supply, the device has a 60 (max) on-resistance (RON), with 3 (max) RON matching and 5 max RON flatness. The digital logic inputs are 1.8V-logic compatible from a +2.7V to +3.3V supply. The MAX4704 is available in both a space-saving 12-pin QFN (3mm x 3mm) package and a 10-pin MAX package. o 3mm x 3mm 12-Pin QFN Package o Guaranteed On-Resistance: 60 (max) (+2.7V supply) 40 (max) (+5V supply) o Guaranteed Match Between Channels: 3 (max) o Guaranteed Flatness Over Signal Range: 5 (max) o Guaranteed Low Leakage Currents: 100pA (max) at +25C o Switching Time: tON = 60ns, tOFF = 20ns o +1.8V to +5.5V Single-Supply Operation o Rail-to-Rail(R) Signal Handling o -3dB Bandwidth: >200MHz o Low Crosstalk: -90dB (1MHz) o High Off-Isolation: -85dB (1MHz) o Low 3pC Charge Injection o THD: 0.02% o +1.8V CMOS-Logic Compatible
Features
MAX4704
Applications
MP3 Players Battery-Operated Equipment Relay Replacement Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits PCMCIA Cards Cellular Phones Modems
Ordering Information
PART TEMP. RANGE -40C to +85C -40C to +85C PIN-PACKAGE 12 QFN 10 MAX
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX4704EGC MAX4704EUB
Pin Configurations
TOP VIEW MAX4704
NO2 1 NO3 NO1 INH GND 2 3 4 5 LOGIC 10 V+ 9 8 7 6 COM NO0 ADDA ADDB INH 1 0 0 0 0 ADDB X 0 0 1 1 ADDA ON SWITCH X 0 1 0 1 NONE COM-NO0 COM-NO1 COM-NO2 COM-NO3 4 NO3 5 NO1 6 INH NO2 3 V+ N.C. 1 2 LOGIC 9 8 7 ADDB N.C. GND 12
MAX4704
COM NO0 ADDA 11 10
MAX
X = DON'T CARE N.C. = NO CONNECT
QFN
________________________________________________________________ Maxim Integrated Products
1
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Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND) V+ .............................................................................-0.3V to +6V All Other Pins (Note 1)................................ -0.3V to (V+ + 0.3V) Continuous Current COM, NO_ ........................................20mA Peak Current COM, NO_ (pulsed at 1ms, 10% duty cycle)..................................40mA ESD per Method 3015.7.......................................................>2kV Continuous Power Dissipation (TA = +70C) 10-Pin MAX (derate 4.7mW/C above +70C) ......... 330mW 12-Pin QFN (derate 11.9mW/C above +70C) ......... 952mW Operating Temperature Range .......................... -40C to +85C Storage Temperature Range ............................ -65C to +150C Lead Temperature (soldering, 10s) ................................ +300C
Note 1: Signals on INH, ADD_, NO_, and COM exceeding V+ or GND 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--Single +3V Supply
(V+ = +2.7V to +3.3V, VIH = +1.4V, VIL = +0.5V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +3V and TA = +25C.) (Notes 2, 3)
PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) On-Resistance Flatness (Note 5) NO_ Off-Leakage Current (Note 6) COM On-Leakage Current (Note 6) COM Off-Leakage Current (Note 6) DYNAMIC Address Transition Time Inhibit Turn-On Time Inhibit Turn-Off Time Break-Before-Make Time (Note 7) Charge Injection tTRANS tON tOFF tBBM Q VNO_ = +1.5V, RL = 300, CL = 35pF, Figure 2 VNO_ = +1.5V, RL = 300, CL = 35pF, Figure 3 VNO_ = +1.5V, RL = 300, CL = 35pF, Figure 3 VNO_ = +1.5V, RL = 300, CL = 35pF, Figure 4 VGEN = 0, RGEN = 0, CL = 1.0nF, Figure 5 +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX 2 2 20 10 25 20 60 70 60 70 20 30 ns ns ns ns pC VCOM, VNO_ RON RON RFLAT (ON) INO_(OFF) V+ = +2.7V, ICOM = 5mA, VNO_ = +1.3V V+ = +2.7V, ICOM = 5mA, VNO_ = +1.3V V+ = +2.7V, ICOM = 5mA, VNO_ = +1V, +1.3V, +1.8V V+ = +3.3V, VCOM = +0.3V, +3V VNO_ = +3V, +0.3V V+ = +3.3V, VCOM = +0.3V, +3V VNO_ = +0.3V, +3V, or floating V+ = +3.3V, VCOM = +0.3V, +3V VNO_ = +3V, +0.3V +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX -0.1 -1 -0.5 -5 -0.5 -5 0.01 0.01 0.01 3 1 0 50 V+ 60 70 3 5 5 10 0.1 1 0.5 nA 5 0.5 5 nA V nA SYMBOL CONDITIONS TA MIN TYP MAX UNITS
ICOM(ON) ICOM(OFF)
2
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Low-Voltage, 60, 4:1 Analog Multiplexer in QFN
ELECTRICAL CHARACTERISTICS--Single +3V Supply (continued)
(V+ = +2.7V to +3.3V, VIH = +1.4V, VIL = +0.5V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +3V and TA = +25C.) (Notes 2, 3)
PARAMETER On-Channel -3dB Bandwidth Off-Isolation (Note 8) Crosstalk (Note 9) NO_ Off-Capacitance COM On-Capacitance COM Off-Capacitance DIGITAL I/O Input Logic High Input Logic Low Input Leakage Current SUPPLY Power-Supply Range Power-Supply Current V+ I+ V+ = +5.5V, ADD_, INH = 0 or V+ 1.8 5.5 1 V A VIH VIL IIH, IIL ADD_, INH = 0 or V+ -1 1.4 0.5 1 V V A SYMBOL BW VISO VCT CNO_(OFF) CCOM(ON) CCOM(OFF) CONDITIONS Signal = 0dBm, 50 in and out, Figure 6 f = 1MHz, RL = 50, CL = 5pF, Figure 6 f = 1MHz, RL = 50, CL = 5pF, Figure 6 f = 1MHz, VNO_ = GND, Figure 7 f = 1MHz, VNO_ = GND, Figure 7 f = 1MHz, VNO_ = GND, Figure 7 TA MIN TYP >200 -85 -90 7 19 15 MAX UNITS MHz dB dB pF pF pF
MAX4704
ELECTRICAL CHARACTERISTICS--Single +5V Supply
(V+ = +4.5V to +5.5V, VIH = +2.0V, VIL = +0.8V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +5V and TA = +25C.) (Notes 2, 3)
PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) On-Resistance Flatness (Note 5) NO_ Off-Leakage Current (Note 6) COM On-Leakage Current (Note 6) VCOM, VNO_ RON RON RFLAT (ON) INO_(OFF) ICOM(ON) V+ = +4.5V, ICOM = 5mA, VNO_ = +3.5V V+ = +4.5V, ICOM = 5mA, VNO_ = +3.5V V+ = +4.5V, ICOM = 5mA, VNO_ = +1V, +2.25V, +3.5V V+ = +5.5V, VCOM = +0.5V, +5V VNO_ = +5V, +0.5V V+ = +5.5V, VCOM = +0.5V, +5V VNO_ = +0.5V, +5V, or floating +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX -0.1 -1 -0.5 -5 0.01 0.01 3 1 0 30 V+ 40 50 2 3 5 10 0.1 1 0.5 5 V nA nA SYMBOL CONDITIONS TA MIN TYP MAX UNITS
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Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704
ELECTRICAL CHARACTERISTICS--Single +5V Supply (continued)
(V+ = +4.5V to +5.5V, VIH = +2.0V, VIL = +0.8V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +5V and TA = +25C.) (Notes 2, 3)
PARAMETER COM Off-Leakage Current DYNAMIC Address Transition Time Inhibit Turn-On Time Inhibit Turn-Off Time Break-Before-Make Time (Note 7) Charge Injection On-Channel -3dB Bandwidth Off-Isolation (Note 8) Crosstalk (Note 9) Total Harmonic Distortion DIGITAL I/O Input Logic High Input Logic Low Input Leakage Current SUPPLY Power-Supply Range Positive Supply Current V+ I+ V+ = +5.5V, ADD_, INH = 0 or V+ 1.8 5.5 1 V A VIH VIL IIH, IIL ADD_, INH = 0 or V+ -1 2.0 0.8 1 V V A tTRANS tON tOFF tBBM Q BW VISO VCT THD VNO_ = +3V, RL = 300, CL = 35pF, Figure 2 VNO_ = +3V, RL = 300, CL = 35pF, Figure 3 VNO_ = +3V, RL = 300, CL = 35pF, Figure 3 VNO_ = +3V, RL = 300, CL = 35pF, Figure 4 VGEN = 0, RGEN = 0, CL = 1.0nF, Figure 5 Signal = 0dBm, 50 in and out, Figure 6 f = 1MHz, RL = 50, CL = 5pF, Figure 6 f = 1MHz, RL = 50, CL = 5pF, Figure 6 f = 20Hz to 20kHz, 1Vp-p, RL = 600 +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX 2 3 >200 -85 -90 0.02 20 9 18 15 35 40 35 40 20 30 ns ns ns ns pC MHz dB dB % SYMBOL ICOM(OFF) CONDITIONS V+ = +5.5V, VCOM_ = +0.5V, +5V VNO_ = +5V, +0.5V TA +25C TMIN to TMAX MIN -0.5 -5 TYP 0.01 MAX 0.5 5 UNITS nA
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: -40C specifications are guaranteed by design. Note 4: RON = RON(MAX) - RON(MIN). Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note 6: Leakage currents are 100% tested at TA = +85C. Limits across the full temperature range are guaranteed by correlation. Note 7: Guaranteed by design. Note 8: Off-Isolation = 20log10 (VCOM / VNO_), VCOM = output, VNO_ = input to off switch. Note 9: Between any two switches.
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Low-Voltage, 60, 4:1 Analog Multiplexer in QFN
Typical Operating Characteristics
(TA = +25C, unless otherwise noted.)
MAX4704
ON-RESISTANCE VS. VCOM
MAX4704 toc01
ON-RESISTANCE VS. VCOM (V+ = 3V)
MAX4704 toc02
ON-RESISTANCE VS. VCOM (V+ = 5V)
MAX4704 toc03
90 80 70 60 V+ = 1.8V
40 35 30 RON () 25 20 15 10
TA = +85C TA = +25C TA = -40C
25
20
TA = +85C TA = +25C TA = -40C
RON ()
50 40 30 20 10 0 0 1
V+ = 2.5V V+ = 3.0V V+ = 5.0V
RON () 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 3.0
15
10
5 5 0 2 3 4 5 VCOM (V) 0 0 1 2 3 4 5 VCOM (V)
SUPPLY CURRENT VS. TEMPERATURE
MAX4704 toc04
SUPPLY CURRENT VS. LOGIC INPUT VOLTAGE
MAX4704 toc05
COM ON-LEAKAGE CURRENT vs. TEMPERATURE
MAX4704 toc06
15 VINH = 0 12 SUPPLY CURRENT (nA)
1000
1000
SUPPLY CURRENT (A)
COM ON-LEAKAGE (pA)
100
V+ = +5V
100 V+ = 5V V+ = 3V 10
9
10
V+ = +3V
6 V+ = +5V V+ = +3V 0 -40 -15 10 35 60 85 TEMPERATURE (C)
3
1 VADDB = 0 0.1 0 1 2 ADDA (V) 3 4 5
1 -40 -15 10 35 60 85 TEMPERATURE (C)
COM OFF-LEAKAGE CURRENT vs. TEMPERATURE
MAX4704 toc07
LOGIC THRESHOLD VS. SUPPLY VOLTAGE
MAX4704 toc08
INHIBIT TURN-ON/OFF TIME vs. SUPPLY VOLTAGE
MAX4704 toc09
1000
1.50 1.25 1.00 0.75 0.50 0.25
35 30 INHIBIT TIME (ns) 25 tON 20 15 10 5
COM OFF, V+ = 3V 100 COM OFF, V+ = 5V 10
LOGIC THRESHOLD ADD_ (V)
COM OFF-LEAKAGE (pA)
VIH
VIL
NO_ OFF, V+ = 5V
tOFF
NO_ OFF, V+ = 3V 1 -40 -15 10 35 60 85 TEMPERATURE (C) 0 0 1 2 V+ (V) 3 4 5 1 2 3 SUPPLY VOLTAGE (V) 4 5
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Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.)
INHIBIT TURN-ON/OFF TIME vs. TEMPERATURE
MAX4704 toc10
CHARGE INJECTION vs. VCOM
MAX4704 toc11
FREQUENCY RESPONSE
-10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 LOSS (dB) ON-RESPONSE
MAX4704 toc12
25 tON, V+ = 3V 20 tON, V+ = 5V INHIBIT TIME (ns)
10 9 8 7 Q (pC) 6 5 4 3 V+ = 5V
0
15 tOFF, V+ = 3V
10
OFF-ISOLATION CROSSTALK
5
tOFF, V+ = 5V
2 1 V+ = 3V
0 -40 -15 10 35 60 85 TEMPERATURE (C)
0 0 1 2 3 4 5 VCOM (V)
0.01
0.1
1
10
100
1000
FREQUENCY (MHz)
THD vs. FREQUENCY
V+ = 5V
MAX4704 toc13
ADDRESS TRANSITION TIME vs. SUPPLY VOLTAGE
MAX4704 toc14
ADDRESS TRANSITION TIME vs. TEMPERATURE
MAX4704 toc15
0.04
30 ADDRESS TRANSITION TIME (ns) 25 tLH 20 15 tHL 10 5 0
25 ADDRESS TRANSITION TIME (ns) tLH, V+ = 3V
20
0.03 THD (%)
15
tLH, V+ = 5V tHL, V+ = 3V tHL, V+ = 5V
10
0.02
5
0.01 10
Vp-p = 1V RIN = ROUT = 600 100 1k FREQUENCY (Hz) 10k 100k
0 1 2 3 SUPPLY VOLTAGE (V) 4 5 -40 -15 10 35 60 85 TEMPERATURE (C)
6
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Low-Voltage, 60, 4:1 Analog Multiplexer in QFN
Pin Description
PIN MAX 10 -- 1 2 3 4 5 6 7 8 9 QFN 1 2, 8 3 4 5 6 7 9 10 11 12 NAME V+ N.C. NO2 NO3 NO1 INH GND ADDB ADDA NO0 COM Positive Supply Voltage No Connection. Not internally connected. Analog Switch 2. Normally open. Analog Switch 3. Normally open. Analog Switch 1. Normally open. Inhibit. Connect to GND for normal operation. Connect to logic-level high to turn all switches off. Ground Address Decoder Selection B Address Decoder Selection A Analog Switch 0. Normally open. Analog Switch Common Terminal FUNCTION
MAX4704
Detailed Description
The MAX4704 low-voltage, 4-channel analog multiplexer operates from a single +1.8V to +5.5V supply. When powered from a +2.7V supply, the device has a 60 (max) on-resistance (RON), with 3 (max) RON matching and 5 (max) RON flatness. The digital logic inputs are +1.8V-logic compatible from a +2.7V to +3.3V supply.
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 slightly at low supply voltages. Maximum supply voltage (V+) must not exceed +6V. Adding protection diode D2 causes the logic threshold to be shifted relative to GND. TTL compatibility is not guaranteed when D2 is added. Protection diodes D1 and D2 also protect against some overvoltage situations. In the circuit in Figure 1, 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.
Applications Information
Digital Control Inputs
The MAX4704 logic inputs are +1.8V CMOS logic compatible for 3V operation and TTL compatible for 5V operation of V+. Driving ADD_ rail-to-rail minimizes power consumption.
Analog Signal Levels
Analog signals that range over the entire supply voltage (V+ to GND) are passed with very little change in on-resistance (see Typical Operating Characteristics). The switches are bidirectional, so the NO_ and COM pins can be either inputs or outputs.
POSITIVE SUPPLY D1 V+
MAX4704
Power-Supply Sequencing and Overvoltage Protection
Caution: Do not exceed the absolute maximum ratings because stresses beyond those listed may cause permanent damage to 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
Vg
NO
COM
GND D2
Figure 1. Overvoltage Protection Using Two External Blocking Diodes 7
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Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704
Test Circuits/Timing Diagrams
V+ V+ VADD V+ ADDA ADDB NO0 NO1-NO2 VNO_ VADD 0 VNO0 90% 90% VOUT 35pF 300 50%
MAX4704
INH GND
NO3 COM VOUT 0 tTRANS
tTRANS
Figure 2. Address Transition Time
V+ V+ V+ ADDA ADDB NO0 NO1-NO3 VNO_ VINH 0 VNO0 90% COM GND 300 35pF VOUT 90% 50%
MAX4704
VINH INH VOUT 0 tOFF
tON
Figure 3. Inhibit Switching Times
V+ V+ VADD V+ ADDA ADDB VCOM 90% NO0-N03 VNO_ VADD 0 50%
tR < 5ns tF < 5ns
MAX4704
INH GND 300 COM 35pF VOUT VOUT 0 tBBM
Figure 4. Break-Before-Make Interval
8
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Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704
Test Circuits/Timing Diagrams (continued)
V+ V+ V+ NO_ CHANNEL SELECT ADDB ADDA VINH VNO = 0 VINH 0
MAX4704
VOUT VOUT
INH GND
COM
VOUT CL 1000pF VOUT IS THE MEASURED VOLTAGE DUE TO CHARGETRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q = VOUT X CL
REPEAT TEST FOR EACH SECTION.
Figure 5. Charge Injection
V+
10nF NETWORK ANALYZER 50 50
V+ CHANNEL SELECT ADDA ADDB NO_
VIN
OFF-ISOLATION = 20log
VOUT VIN VOUT VIN VOUT VIN
MAX4704
ON-LOSS = 20log VOUT
INH GND
COM
MEAS.
REF. CROSSTALK = 20log
50
50
MEASUREMENTS ARE STANDARDIZED AGAINST SHORT 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 (A, B) TO OTHER CHANNEL. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
Figure 6. Off-Isolation, On-Loss, and Crosstalk
V+
Chip Information
TRANSISTOR COUNT: 256
NO_ NO_
V+ CHANNEL SELECT ADDA ADDB
PROCESS: CMOS
MAX4704
INH GND COM 1MHz CAPACITANCE ANALYZER
Figure 7. NO_/COM Capacitance
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Low-Voltage, 60, 4:1 Analog Multiplexer in QFN MAX4704
Package Information
32L QFN, 3x3x0.85.EPS
10
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Low-Voltage, 60, 4:1 Analog Multiplexer in QFN
Package Information (continued)
10LUMAX.EPS
MAX4704
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 (c) 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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