High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX478

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High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX478

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19-2522; 7/02
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers
MAX4781/MAX4782/MAX4783 high-speed, low-voltage, on-resistance, CMOS analog multiplexers/switches configured 8-channel multiplexer (MAX4781), 4-channel multiplexers (MAX4782), three single-pole/double-throw (SPDT) switches (MAX4783). These devices operate with +1.6V +3.6V single supply. When powered from supply, MAX4781/ MAX4782/MAX4783 feature on-resistance (RON), with (max) matching between channels, (max) flatness. These devices handle Rail-to-Rail® analog signals offer fast switching times less than 25ns while consuming less than quiescent power. They available space-saving 16-pin (4mm 4mm) TSSOP packages. On-Resistance (max) (+3V Supply) (max) (+1.8V Supply) On-Resistance Match Between Channels (max) (+3V Supply) On-Resistance Flatness (max) (+3V Supply) +1.6V +3.6V Single-Supply Operation High-Current Handling Capacity (150mA Continuous) +1.8V CMOS-Logic Compatible (+3V Supply) Fast Switching Times: 25ns, tOFF 15ns Compatible with Industry-Standard 74HC4051/74HC4052/74HC4053 MAX4617/MAX4618/MAX4619 Available 16-Pin
Features
MAX4781/MAX4782/MAX4783
Applications
Battery-Operated Equipment Audio Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits
Ordering Information
PART MAX4781EUE MAX4781EGE MAX4782EUE MAX4782EGE MAX4783EUE MAX4783EGE TEMP RANGE -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C PIN-PACKAGE TSSOP (4mm 4mm) TSSOP (4mm 4mm) TSSOP (4mm 4mm)
Rail-to-Rail registered trademark Nippon Motorola, Ltd.
Configurations/Functional Diagrams
VIEW
MAX4781
ENABLE LOGIC
ENABLE
LOGIC
N.C.
N.C.
MAX4781
TSSOP
Configurations/Functional Diagrams continued data sheet. Maxim Integrated Products
pricing delivery, ordering information please contact Maxim/Dallas Direct! 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX4781/MAX4782/MAX4783
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced VCC, ENABLE .-0.3V Voltage Other Terminal (Note 1).-0.3V (VCC 0.3V) Continuous Current into ENABLE.±10mA Continuous Current into .±150mA Peak Current into (pulsed 1ms, duty cycle).±300mA Continuous Power Dissipation 16-Pin (derate 18.5mW/°C above +70°C) .1481mW 16-Pin TSSOP (derate 5.7mW/°C above +70°C) 457mW Operating Temperature Range .-40°C +85°C Junction Temperature .+150°C Storage Temperature Range .-65°C +150°C Lead Temperature (soldering, 10s) .+300°C
Note Signals exceeding clamped internal diodes. Limit forward-diode current maximum current rating.
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS-Single Supply
(VCC +2.7V +3.6V, 1.4V, 0.5V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Notes
PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance (Note On-Resistance Match Between Channels (Notes On-Resistance Flatness (Note Off-Leakage Current Off-Leakage Current VX_, VY_, +2.7V; IX_, IY_, 100mA; 1.7V +2.7V; IX_, IY_, 100mA; 1.7V +2.7V; IX_, IY_, 100mA; 0.7V, 1.7V +3.6V; VY_, 3.3V, 0.3V; 0.3V, 3.3V +3.6V; VX_, VY_, 3.3V, 0.3V; 0.3V, 3.3V +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX 0.002 0.002 0.002 SYMBOL CONDITIONS UNITS
RFLAT(ON) IX_(OFF) IY_(OFF) IZ_(OFF) IX(OFF) IY(OFF) IZ(OFF) IX(ON) IY(ON) IZ(ON)
On-Leakage Current
+3.6V +25°C 0.3V, 3.3V; VX_, VY_; TMIN TMAX 0.3V, 3.3V floating
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers
ELECTRICAL CHARACTERISTICS-Single Supply (continued)
(VCC +2.7V +3.6V, 1.4V, 0.5V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Notes
PARAMETER SYMBOL CONDITIONS VX_, VY_, 1.5V; 35pF; Figure VX_, VY_, 1.5V; 35pF; Figure VX_, VY_, 1.5V; 35pF; Figure VX_, VY_, 1.5V; 35pF; Figure VGEN RGEN 1nF, Figure 1MHz, Figure MAX4781 1MHz, Figure MAX4782 MAX4783 MAX4781 1MHz, Figure 35pF, Figure 35pF, Figure MAX4782 MAX4783 10MHz 1MHz 10MHz 1MHz +25°C +25°C +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C -110 UNITS
MAX4781/MAX4782/MAX4783
SWITCH DYNAMIC CHARACTERISTICS Turn-On Time Turn-Off Time Address Transition Time Break-Before-Make Time (Note Charge Injection tOFF tTRANS tBBM CX_(OFF), CY_(OFF), CZ_(OFF) CX(OFF), CY(OFF), CZ(OFF) CX(ON) CY(ON) CZ(ON) VISO IIN_ 3.6V
Input Off-Capacitance
+25°C
0.045 0.0005
Output Off-Capacitance
Output On-Capacitance
Off-Isolation (Note Channel-to-Channel Crosstalk (Note Total Harmonic Distortion DIGITAL Input Logic High Input Logic Input Leakage Current POWER SUPPLY Power-Supply Range Positive Supply Current
20Hz 20kHz, 0.5VP-P, TMIN TMAX TMIN TMAX TMIN TMAX
3.6V; 3.6V
+1.6
+3.6
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX4781/MAX4782/MAX4783
ELECTRICAL CHARACTERISTICS-Single +1.8V Supply
(VCC +1.8V, 0.4V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Notes
PARAMETER ANALOG SWITCH Analog Signal Range VX_, VZ_, 1.8V; IX_, IY_, 10mA; +25°C 1.0V TMIN TMAX 1.8V; IX_, IY_, 10mA; +25°C 1.0V TMIN TMAX VX_, VY_, 1.0V; 35pF; Figure VX_, VY_, 1.0V; 35pF; Figure VX_, VY_, 1.0V; 35pF; Figure VX_, VY_, 35pF; Figure VGEN RGEN 1nF, Figure +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C SYMBOL CONDITIONS UNITS
On-Resistance (Note On-Resistance Match Between Channels (Notes
SWITCH DYNAMIC CHARACTERISTICS Turn-On Time Turn-Off Time Address Transition Time Break-Before-Make Time (Note Charge Injection DIGITAL Input Logic High Input Logic Input Leakage Current POWER SUPPLY Power-Supply Range Positive Supply Current 3.6V; 3.6V IIN_ TMIN TMAX TMIN TMAX 3.6V TMIN TMAX 0.000 tOFF tTRANS tBBM
Note algebraic convention used this data sheet; most negative value shown minimum column. Note Devices tested maximum temperature guaranteed design correlation +25°C -40°C specifications. Note matching specifications QFN-packaged parts guaranteed design. Note RON(MAX) RON(MIN). Note Flatness defined difference between maximum minimum value on-resistance measured over specified analog signal ranges. Note Guaranteed design; production tested. Note Off-isolation 20log10(VCOM_ VNO), VCOM_ output, input switch. Note Between channels.
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX4781/MAX4782/MAX4783
Typical Operating Characteristics
(GND +25°C, unless otherwise noted.)
ON-RESISTANCE
MAX4781 toc01
ON-RESISTANCE TEMPERATURE
MAX4781 toc02
LEAKAGE CURRENT TEMPERATURE
3.6V
MAX4781toc03
1.8V
+85°C
1000
(pA)
2.0V 2.5V 2.7V 3.0V
+25°C -40°C
3.3V
3.6V
3.0V TEMPERATURE (°C)
CHARGE INJECTION
MAX4781 toc04
SUPPLY CURRENT TEMPERATURE
MAX4781 toc05
LOGIC THRESHOLD SUPPLY VOLTAGE
MAX4781 toc06
CHARGE INJECTION (pC) 1.8V
1000
LOGIC THRESHOLD RISING
+85°C
-100 -120 3.0V
(nA)
+25°C
FALLING
0.01
-40°C
SUPPLY VOLTAGE
TURN-ON/TURN-OFF TIME SUPPLY VOLTAGE
MAX4781 toc07
TURN-ON/TURN-OFF TIME TEMPERATURE
MAX4781 toc08
TIME (ns)
TIME (ns)
tOFF
tOFF
SUPPLY VOLTAGE
TEMPERATURE (°C)
3.0V
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX4781/MAX4782/MAX4783
Typical Operating Characteristics (continued)
(GND +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION FREQUENCY
MAX4781 toc09
FREQUENCY RESPONSE
0.08 0.07 0.06 0.05 0.04 0.03 OFF-ISOLATION -110 100k 100M FREQUENCY (Hz) 0.02 RESPONSE (dB) CROSSTALK ON-RESPONSE
FREQUENCY (Hz) 100k
MAX4781 Description
TSSOP NAME ENABLE N.C. X0-X7 Analog Switch Output Digital Enable Input. Normally connect GND. Drive logic high switches off. Connection. internally connected. Ground Digital Address Input Digital Address Input Digital Address Input Analog Switch Inputs X0-X7 Positive Analog Digital Supply Voltage Input FUNCTION
MAX4781 toc10
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers
MAX4782 Description
TSSOP NAME Y0-Y3 ENABLE N.C. X0-X3 Analog Switch Inputs Y0-Y3 Analog Switch Output Digital Enable Input. Normally connect GND. Drive logic high switches off. Connection. internally connected. Ground Digital Address Input Digital Address Input Analog Switch Inputs X0-X3 Analog Switch Output Positive Analog Digital Supply Voltage Input FUNCTION
MAX4781/MAX4782/MAX4783
MAX4783 Description
TSSOP NAME ENABLE N.C. FUNCTION Analog Switch Normally Open Input Analog Switch Normally Closed Input Analog Switch Normally Open Input Analog Switch Output Analog Switch Normally Closed Input Digital Enable Input. Normally connect GND. Drive logic high switches off. Connection. internally connected. Ground Digital Address Input Digital Address Input Digital Address Input Analog Switch Normally Closed Input Analog Switch Normally Open Input Analog Switch Output Analog Switch Output Positive Analog Digital Supply Voltage Input
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX4781/MAX4782/MAX4783
Applications Information
Power-Supply Considerations
Overview MAX4781/MAX4782/MAX4783 construction typical most CMOS analog switches. There supply inputs: GND. drive internal CMOS switches limits analog voltage switch. Internal reverse ESD-protection diodes connected between each analog signal input both GND. analog signal exceeds GND, these diodes conducts. During normal operation, these other reverse-biased diodes leak, forming only current drawn from GND. Virtually analog leakage current comes from diodes. Although diodes given signal input identical therefore fairly well balanced, they reverse-biased differently. Each diode biased either analog signal. Their leakages vary signal varies. difference diodes' leakages constitutes analog-signal-path leakage current. analog leakage current flows between each input supply terminals, other switch terminal. Both sides given switch show leakage currents either same opposite polarity. power internal logic input logic limits. Logic inputs have ESD-protection diodes ground. Power Supply MAX4781/MAX4782/MAX4783 operate from single supply between +1.6V +3.6V. Switch on-resistance increases supply voltage lowered.
High-Frequency Performance
systems, signal response reasonably flat 50MHz (see Typical Operating Characteristics). Above 20MHz, on-response several minor peaks that highly layout dependent. state, switch acts like capacitor passes higher frequencies with less attenuation. 10MHz, off-isolation approximately -50dB systems, becoming worse (approximately 20dB decade) frequency increases. Higher circuit impedance also degrades offisolation. Adjacent channel attenuation approximately above that bare socket entirely because capacitive coupling.
Nomenclature
MAX4781/MAX4782/MAX4783 compatible with industry-standard 74HC4051/74HC4052/ 74HC4053 MAX4617/MAX4618/MAX4619. single-supply applications, they function identically have identical logic diagrams, although these parts differ electrically. designations logic diagrams this data sheet conform original 1972 specifications published CD4051/ CD4052/CD4053. These designations differ from standard Maxim switch designations found other Maxim data sheets such MAX4051/ MAX4052/MAX4053. Designers more comfortable with Maxim's standard designations advised that designations logic diagrams MAX4051/MAX4052/MAX4053 data sheet applied MAX4781/MAX4782/MAX4783.
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX4781/MAX4782/MAX4783
Table Truth Table/Switch Programming
ENABLE INPUT SELECT INPUT MAX4781 switches open X-X0 SWITCHES MAX4782 switches open X-X0 Y-Y0 MAX4783 switches open X-X0 Y-Y0 Z-Z0 X-X1 Y-Y0 Z-Z0 X-X0 Y-Y1 Z-Z0 X-X1 Y-Y1 Z-Z0 X-X0 Y-Y0 Z-Z1 X-X1 Y-Y0 Z-Z1 X-X0 Y-Y1 Z-Z1 X-X1 Y-Y1 Z-Z1
X-X1
X-X1 Y-Y1
X-X2
X-X2 Y-Y2
X-X3
X-X3 Y-Y3
X-X4
X-X0 Y-Y0
X-X5
X-X1 Y-Y1
X-X6
X-X2 Y-Y2
X-X7
X-X3 Y-Y3
Don't care. *Not present MAX4782. Note: Input output pins identical interchangeable. Either considered input output. Signals pass equally well either direction.
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX4781/MAX4782/MAX4783
Test Circuits/Timing Diagrams
VENABLE X1-X7
VENABLE
MAX4781
ENABLE 35pF tOFF VOUT VOUT
VENABLE VX0,
MAX4782
VENABLE ENABLE 35pF VOUT VOUT tOFF
VENABLE VX0, VY0, VOUT 35pF VOUT VX1, VY1,
VENABLE
MAX4783
ENABLE
tOFF
TEST EACH SECTION INDIVIDUALLY.
Figure Enable Switching Times
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers
Test Circuits/Timing Diagrams (continued)
MAX4781/MAX4782/MAX4783
MAX4781 X1-X7
35pF VOUT VOUT
ENABLE
tTRANS
tTRANS
VX0,
MAX4782
ENABLE 35pF VOUT VOUT VX3, tTRANS tTRANS
VX0, VY0, VOUT 35pF VOUT VX1, VY1, tTRANS
MAX4783
ENABLE
tTRANS
TEST EACH SECTION INDIVIDUALLY.
Figure Address Transition Times
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX4781/MAX4782/MAX4783
Test Circuits/Timing Diagrams (continued)
X0-X7 X0-X3, Y0-Y3
MAX4781
ENABLE 35pF VOUT ENABLE
MAX4782
35pF VOUT
35pF VOUT VOUT TEST EACH SECTION INDIVIDUALLY. tBBM
MAX4783
ENABLE
Figure Break-Before-Make Interval
CHANNEL SELECT VENABLE VENABLE
MAX4781 MAX4782 MAX4783
VOUT 1000pF
VOUT
VOUT
ENABLE
VOUT MEASURED VOLTAGE CHARGETRANSFER ERROR WHEN CHANNEL TURNS OFF. TEST EACH SECTION INDIVIDUALLY. VOUT
Figure Charge Injection
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers
Test Circuits/Timing Diagrams (continued)
10nF NETWORK ANALYZER
MAX4781/MAX4782/MAX4783
CHANNEL SELECT
OFF-ISOLATION 20log
VOUT VOUT VOUT
MAX4781 MAX4782 MAX4783
ON-LOSS 20log VOUT MEAS. REF. CROSSTALK 20log
ENABLE
NOTES: MEASUREMENTS STANDARDIZED AGAINST SHORT SOCKET TERMINALS. OFF-ISOLATION MEASURED BETWEEN "OFF" TERMINAL EACH SWITCH. ON-LOSS MEASURED BETWEEN "ON" TERMINAL EACH SWITCH. CROSSTALK MEASURED BETWEEN ADJACENT CHANNELS WITH CHANNEL OTHER OFF. SIGNAL DIRECTION THROUGH SWITCH REVERSED; WORST VALUES RECORDED.
Figure Off-Isolation, On-Loss, Crosstalk
CHANNEL SELECT
ENABLE
MAX4781 MAX4782 MAX4783
1MHz CAPACITANCE ANALYZER
Figure Capacitance
Chip Information
TRANSISTOR COUNT: PROCESS: CMOS
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX4781/MAX4782/MAX4783
Configurations/Functional Diagrams (continued)
MAX4782 VIEW ENABLE ENABLE LOGIC N.C. TSSOP MAX4782 N.C. LOGIC
MAX4783 VIEW ENABLE ENABLE N.C. N.C. TSSOP MAX4783
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers
Package Information
(The package drawing(s) this data sheet reflect most current specifications. latest package outline information, www.maxim-ic.com/packages.)
TSSOP,NO PADS.EPS
MAX4781/MAX4782/MAX4783
High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX4781/MAX4782/MAX4783
Package Information (continued)
(The package drawing(s) this data sheet reflect most current specifications. latest package outline information, www.maxim-ic.com/packages.)
12,16,20, QFN.EPS
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
_Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 2002 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.

High-Speed, Low-Voltage, CMOS Analog Switches/Multiplexers MAX478

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