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19-1717; Rev 0; 4/00
Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer
General Description
The MAX4634 fast, low-voltage, 4-channel CMOS analog multiplexer features 4 max on-resistance (RON). It offers RON matching between switches to 0.3 max and RON flatness of 1 max over the specified signal range. Each switch can handle V+ to GND analog signals. Off-leakage current is only 0.1nA max at +25C. The MAX4634 features fast turn-on (tON) and turn-off (tOFF) times of 18ns and 11ns, respectively. All this comes in a tiny 10-pin MAX package. This low-voltage multiplexer operates from a +1.8V to +5.5V single supply. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring TTL/CMOS-logic compatibility with +5V operation. o Guaranteed RON 2.5 typ (5V Supply) 4.5 typ (3V Supply) o Guaranteed RON Match Between Channels 0.3 max o Guaranteed RON Flatness Over Signal Range 1 max o Guaranteed Low Leakage Currents 0.1nA (at +25C) o +1.8V to +5.5V Single-Supply Operation o +1.8V Operation RON = 30 typ Over Temperature tON = 30ns typ, tOFF = 13ns typ o V+ to GND Signal Handling o TTL/CMOS-Logic Compatible o -78dB Crosstalk (at 1MHz) o -80dB Off-Isolation (at 1MHz) o 0.018% Total Harmonic Distortion
Features
MAX4634
________________________Applications
Battery-Operated Equipment Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Sample-and-Hold Circuits Communications Circuits
Ordering Information
PART MAX4634EUB TEMP. RANGE -40C to +85C PIN-PACKAGE 10 MAX
Pin Configuration/Functional Diagram/Truth Table
TOP VIEW
MAX4634
A0 1 NO1 GND NO3 EN 2 3 4 5 LOGIC 10 A1 9 8 7 6 NO2 COM NO4 V+ A1 X 0 0 1 1 A0 X 0 1 0 1 EN 0 1 1 1 1 ON SWITCH NONE 1 2 3 4
MAX
X = DON'T CARE
________________________________________________________________ MAXIM Integrated Products
1
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Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer MAX4634
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND) V+ .............................................................................-0.3V to +6V A_, EN, COM, NO_ (Note 1) .........................-0.3V to (V+ + 0.3V) Continuous Current (all other pins) ..................................20mA Continuous Current (COM, NO_) .....................................50mA Peak Current (COM, NO_ pulsed at 1ms, 10% duty cycle) ........................................................100mA Continuous Power Dissipation (TA = +70C) 10-Pin MAX (derate 4.1mW/C above +70C) ..........330mW Operating Temperature Range MAX4634EUB .................................................-40C to +85C Storage Temperature Range ............................-65C to +150C Lead Temperature (soldering, 10s) ................................+300C
Note 1: Signals on NO_, COM, EN, or A_ 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 +5V Supply
(V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +5V, TA = +25C.) (Note 2) PARAMETER ANALOG SWITCH Analog Signal Range VCOM, VNO_ RON V+ = 4.5V, ICOM = 10mA, VNO_ = 0 to V+ V+ = 4.5V, ICOM = 10mA, VNO_ = 0 to V+ V+ = 4.5V, ICOM = 10mA, VNO_ = 0 to V+ V+ = 5.5V; VCOM = 1V, 4.5V; VNO_ = 4.5V, 1V V+ = 5.5V; VCOM = 1V, 4.5V; VNO_ = 4.5V, 1V V+ = 5.5V; VCOM = 1V, 4.5V; VNO_ = 1V, 4.5V, or floating TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX -0.1 -0.3 -0.1 -0.65 -0.1 -0.65 0.01 0.01 0.01 0.75 0.1 0 2.5 V+ 4 4.5 0.3 0.4 1 1.2 0.1 nA 0.3 0.1 nA 0.65 0.1 nA 0.65 V SYMBOL CONDITIONS MIN TYP MAX UNITS
On-Resistance
On-Resistance Match Between Channels (Note 3)
RON
On-Resistance Flatness (Note 4)
RFLAT(ON)
NO_ Off-Leakage Current (Note 5)
INO_(OFF)
COM Off-Leakage Current (Note 5)
ICOM(OFF)
COM On-Leakage Current (Note 5) DIGITAL INPUTS EN) I/O (A_, Input Logic High Input Logic Low Input Logic Current
ICOM(ON)
VIH VIL
2.4 0.8 -100 5 100
V V nA
2
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Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer
ELECTRICAL CHARACTERISTICS--Single +5V Supply (continued)
(V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +5V, TA = +25C.) (Note 2) PARAMETER DYNAMIC Turn-On Time (Note 5) tON VNO_ = 3V, RL = 300, CL = 35pF, Figure 2 VNO_ = 3V, RL = 300, CL = 35pF, Figure 2 VNO_ = 3V, RL = 300, CL = 35pF, Figure 3 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX f = 10MHz f = 1MHz f = 10MHz f = 1MHz 1 2 -57 -80 -52 -78 13 52 68 0.018 1.8 V+ = 5.5V, VIH = V+, VIL = 0 0.001 5.5 1.0 pC dB dB pF pF pF % V A 8 ns 6 14 18 ns 20 11 ns 13 SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4634
Turn-Off Time (Note 5)
tOFF
Break-Before-Make Time (Note 5) Charge Injection Off-Isolation (Note 6) Crosstalk (Note 7) NO_ Off-Capacitance COM Off-Capacitance COM On-Capacitance Total Harmonic Distortion POWER SUPPLY Power-Supply Range Positive Supply Current
tBBM Q VISO VCT CNO_(OFF) CCOM(OFF) CCOM(ON) THD V+ I+
VGEN = 2V, RGEN = 0, CL = 5pF, Figure 4 CL = 5pF, RL = 50, Figure 5 CL = 5pF, RL = 50, Figure 5 Figure 6 Figure 6 CL = 5pF, Figure 6 RL = 600, f = 20Hz to 20kHz
ELECTRICAL CHARACTERISTICS--Single +3V Supply
(V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +3V, TA = +25C.) (Note 2) PARAMETER ANALOG SWITCH Analog Signal Range VCOM_, VNO_ RON V+ = 2.7V, ICOM = 10mA, VNO_ = 0 to V+ V+ = 2.7V, ICOM = 10mA, VNO_ = 0 to V+ TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 0.1 0 4.5 V+ 7 8 0.3 0.4 V SYMBOL CONDITIONS MIN TYP MAX UNITS
On-Resistance
On-Resistance Match Between Channels (Note 3)
RON
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Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer MAX4634
ELECTRICAL CHARACTERISTICS--Single +3V Supply (continued)
(V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +3V, TA = +25C.) (Note 2) PARAMETER On-Resistance Flatness (Note 4) SYMBOL RFLAT(ON) V+ = 2.7V, ICOM = 10mA, VNO_ = 0 to V+ V+ = 3.3V; VCOM = 1V, 3V; VNO_ = 3V, 1V V+ = 3.3V; VCOM = 1V, 3V; VNO_ = 3V, 1V V+ = 3.3V; VCOM = 1V, 3V; VNO_ = 1V, 3V, or floating CONDITIONS TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX -0.1 -0.3 -0.1 -0.65 -0.1 -0.65 0.01 0.01 0.01 MIN TYP 1.2 MAX 2.5 3 0.1 nA 0.3 0.1 nA 0.65 0.1 nA 0.65 UNITS
NO_ Off-Leakage Current (Note 5)
INO_(OFF)
COM Off-Leakage Current (Note 5)
ICOM_(OFF)
COM On-Leakage Current (Note 5) DIGITAL I/O (A_, EN) Input High Input Low Input Logic Current DYNAMIC Turn-On Time (Note 5)
ICOM_(ON)
VIH VIL
2.0 0.4 -100 5 100
V V nA
tON
VNO_ = 2V, CL = 35pF, RL = 300, Figure 2 VNO_ = 2V, CL = 35pF, RL = 300, Figure 2 VNO_ = 2V, CL = 35pF, RL = 300, Figure 3
TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX f = 10MHz f = 1MHz f = 10MHz f = 1MHz 1
16
22 ns 24
8
14 ns 16
Turn-Off Time (Note 5)
tOFF
Break-Before-Make Time (Note 5) Charge Injection Off-Isolation (Note 6) Crosstalk (Note 7)
9 ns 2 -57 -80 -52 -78 pC dB dB
tBBM Q VISO VCT
VGEN = 1.5V, RGEN = 0, CL = 5pF, Figure 4 CL = 5pF, RL = 50, Figure 5 CL = 5pF, RL = 50, Figure 5
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Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer MAX4634
ELECTRICAL CHARACTERISTICS--Single +3V Supply (continued)
(V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = +3V, TA = +25C.) (Note 2) PARAMETER NO_ Off-Capacitance COM Off-Capacitance COM On-Capacitance Total Harmonic Distortion POWER SUPPLY Positive Supply Current I+ V+ = 3.3V, VIH = V+, VIL = 0 0.001 1 A SYMBOL CNO_(OFF) CCOM(OFF) C(ON) THD CONDITIONS VNO_ = GND, f = 1MHz, Figure 6 VCOM = GND, f = 1MHz, Figure 6 VCOM = VNO_ = GND, f = 1MHz, Figure 6 RL = 600, f = 20Hz to 20kHz MIN TYP 13 52 68 0.018 MAX UNITS pF pF pF %
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: RON = 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: Guaranteed by design. Note 6: Off-Isolation = 20log10 (VCOM / VNO), where VCOM = output and VNO = input to off switch. Note 7: Between any two switches.
Typical Operating Characteristics
(TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM
MAX4634-01
ON-RESISTANCE vs. VCOM AND TEMPERATURE (V+ = +3V)
TA = +85C 4.5
MAX4634-02
20
5.0
15 V+ = 1.8V RON () 10 V+ = 2.5V V+ = 3.0V 5 V+ = 5.0V 3.0 TA = -40C 0 0 1 2 VCOM (V) 3 4 5 2.5 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 3.0 TA = +25C RON () 4.0
3.5
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Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer MAX4634
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM AND TEMPERATURE (V+ = +5V)
MAX4634-03
ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE
MAX4634-04
4.0
0.15
3.5 TA = +85C LEAKAGE (nA) RON () 3.0
0.10 ICOM(OFF) 0.05
2.5
0 INO_(OFF)
2.0 TA = +25C 1.5 0 1 3 2 VCOM (V) 4 5 TA = -40C
-0.05
ICOM(ON)
-0.10 -50 0 50 100 TEMPERATURE (C)
CHARGE INJECTION vs. VCOM
MAX4634-05
ON/OFF-ENABLE TIME vs. SUPPLY VOLTAGE
MAX4634-06
2.5 V+ = 5V
35 30 25
2.0
Q (pC)
1.5 V+ = 3V 1.0
tON/tOFF (ns)
20 tON 15 10 tOFF
0.5
5 0 0 1 3 2 VCOM (V) 4 5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V)
0
ON/OFF-ENABLE TIME vs. TEMPERATURE
MAX4634-07
POWER-SUPPLY CURRENT vs. TEMPERATURE
MAX4634-08
12 10 8 tON/tOFF (ns) 6 tOFF 4 2 0 -50 0 50
0.5
tON I+, IGND (A) 100
0.4
0.3
0.2
0.1
0 -50 0 TEMPERATURE (C) 100 50 TEMPERATURE (C) 150
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Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.)
MAX4634
LOGIC-LEVEL THRESHOLD vs. SUPPLY VOLTAGE
MAX4634-10
FREQUENCY RESPONSE
MAX4634-11
2.0
20 0 BANDWIDTH -20 LOSS (dB)
LOGIC-LEVEL THRESHOLD (V)
1.5
1.0
-40 -60
0.5 -80
CROSSTALK OFF-ISOLATION
0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V)
-100 0.01 0.1 1 10 100 1000 FREQUENCY (MHz)
Pin Description
PIN 1 2 3 4 5 6 7 8 9 10 NAME A0 NO1 GND NO3 EN V+ NO4 COM NO2 A1 Address Input Normally Open Switch 1 Ground Normally Open Switch 3 Enable Logic Input Positive Supply Voltage Normally Open Switch 4 Analog Switch Common Terminal Normally Open Switch 2 Address Input FUNCTION
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Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer MAX4634
Detailed Description
The MAX4634 is a low-on-resistance, low-voltage analog multiplexer that operates from a +1.8V to +5.5V single supply. CMOS switch construction allows processing of analog signals that are within the supply voltage range (GND to V+). To disable all switch channels, drive EN low. All four inputs and COM become high impedance during this state. If the disable feature is not needed, connect EN to V+. Protection diodes D1 and D2 also protect against some overvoltage situations. A fault voltage up to the absolute MAXIMum rating at an analog signal input does not damage the device, even if the supply voltage is below the signal voltage.
+5V D1 V+
Applications Information
Power-Supply Sequencing and Overvoltage Protection
Proper power-supply sequencing is recommended for all CMOS devices. Always apply V+ before applying analog signals or logic inputs, especially if the analog or logic signals are not current limited. If this sequencing is not possible, and if the analog or logic inputs are not current limited to < 20mA, add a small-signal diode (D1) as shown in Figure 1. If the analog signal can dip below GND, add D2. Adding protection diodes reduces the analog signal range to a diode drop (about 0.7V) below V+ for D1 or to a diode drop above ground for D2. The addition of diodes does not affect leakage. On-resistance increases by a small amount at low supply voltages. MAXIMum supply voltage (V+) must not exceed 6V.
COM
MAX4634
* *
*
NO
*
D2 GND * INTERNAL PROTECTION DIODES
Figure 1. Overvoltage Protection Using External Blocking Diodes
Test Circuits/Timing Diagrams
tR < 5ns tF < 5ns
V+ VEN V+ NO1 NO2-NO4 V+
VEN = VIH + 0.5 0
50%
EN
A0 A1 50
MAX4634
COM GND 300 VOUT 35pF
VOUT
V+ 90% 90%
0 tON
tOFF
Figure 2. Switching Time
8
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Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer
Test Circuits/Timing Diagrams (continued)
MAX4634
V+ VEN V+ NO1-NO4 +10V LOGIC INPUT VA_ VIH + 0.5V 0 +5V 90% COM GND 50 300 VOUT 35pF SWITCH OUTPUT VOUT 0 50%
+2.4V
EN
tR < 5ns tF < 5ns
MAX4634
A0 VA A1
tOPEN
Figure 3. Break-Before-Make Interval
+5V RS NO VEN VS CHANNEL SELECT EN A0 A1 V+ LOGIC INPUT VEN COM VOUT VOUT VOUT VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q = VOUT x CL +3V OFF 0 ON OFF
MAX4634
CL = 5nF GND
Figure 4. Charge Injection _______________________________________________________________________________________ 9
Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer MAX4634
Test Circuits/Timing Diagrams (continued)
V+ 10nF NETWORK ANALYZER 50 50 OFF-ISOLATION = 20log VOUT VIN VOUT VIN VOUT VIN
V+
EN
V+ NO
VIN
ON-LOSS = 20log CROSSTALK = 20log MEAS REF
V+ A
MAX4634
COM GND
VOUT
50
50
NOTES: MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM AND "OFF" TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM AND "ON" TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED BETWEEN COMA AND COMB TERMINALS ON EACH DEVICE. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
Figure 5. Off-Isolation/On-Channel Bandwidth
Chip Information
+5V V+ NO1 NO4 COM f = 1MHz 1MHz CAPACITANCE ANALYZER
TRANSISTOR COUNT: 231
A1 CHANNEL SELECT A0
MAX4634
GND EN
Figure 6. Channel Off/On-Capacitance
10
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Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer
Package Information
10LUMAX.EPS
MAX4634
Note: The MAX4634 package does not have an exposed pad.
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Fast, Low-Voltage, 4, 4-Channel CMOS Analog Multiplexer MAX4634
NOTES
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.
12 ____________________MAXIM Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2000 MAXIM Integrated Products Printed USA is a registered trademark of MAXIM Integrated Products.

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