MAXIM MAX4634ETB

19-1717; Rev 3; 2/09
Fast, Low-Voltage, 4Ω,
4-Channel CMOS Analog Multiplexer
Features
♦ Guaranteed RON
2.5Ω (typ) with 5V Supply
4.5Ω (typ) with 3V Supply
The MAX4634 fast, low-voltage, 4-channel CMOS analog multiplexer features 4Ω (max) on-resistance (RON).
It offers RON matching between switches to 0.3Ω (max)
and RON flatness of 1Ω (max) over the specified signal
range. Each switch can handle V+ to GND analog signals. Off-leakage current is only 0.1nA (max) at +25°C.
The MAX4634 features fast turn-on (tON) and turn-off
(tOFF) times of 18ns and 11ns, respectively. All this
comes in the tiny 10-pin µMAX® and 10-pin, 3mm x
3mm, TDFN packages.
♦ 0.3Ω (max) Guaranteed RON Match Between
Channels
♦ 1Ω (max) Guaranteed RON Flatness Over Signal
Range
♦ 0.1nA (at +25°C) Guaranteed Low Leakage
Currents
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.
♦ +1.8V to +5.5V Single-Supply Operation
♦ +1.8V Operation
RON = 30Ω (typ) Overtemperature
tON = 30ns (typ), tOFF = 13ns (typ)
♦ V+ to GND Signal Handling
♦ TTL/CMOS-Logic Compatible
________________________Applications
♦ -78dB Crosstalk (at 1MHz)
Battery-Operated Equipment
♦ -80dB Off-Isolation (at 1MHz)
Audio and Video Signal Routing
♦ 0.018% Total Harmonic Distortion
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Ordering Information
Communications Circuits
µMAX is a registered trademark of Maxim Integrated Products, Inc.
PART
TEMP RANGE
PIN-PACKAGE
MAX4634EUB
-40°C to +85°C
10 µMAX
MAX4634ETB
-40°C to +85°C
10 TDFN-EP*
(3mm x 3mm)
TOP
MARK
—
AAU
*EP = Exposed pad.
Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
MAX4634EUB
A0 1
NO1
LOGIC
2
MAX4634ETB
10 A1
9
NO2
GND
3
8
COM
NO3
4
7
NO4
EN
5
6
V+
µMAX
A1
A0
EN
ON SWITCH
X
X
0
NONE
0
0
1
1
0
1
1
2
1
0
1
3
1
1
X = DON'T CARE
1
4
A0 1
LOGIC
10 A1
NO1
2
9
NO2
GND
3
8
COM
NO3
4
7
NO4
EN
5
6
V+
*EP
TDFN
*EP = EXPOSED PAD
________________________________________________________________ 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
MAX4634
General Description
MAX4634
Fast, Low-Voltage, 4Ω,
4-Channel CMOS Analog Multiplexer
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 = +70°C)
10-Pin µMAX (derate 4.1mW/°C above +70°C) ..........330mW
10-Pin TDFN (derate 24.4mW/°C
above +70°C)............................................................1951mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
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 = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +5V,
TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
On-Resistance
On-Resistance Match
Between Channels
(Notes 4, 5)
On-Resistance Flatness
(Note 6)
VCOM,
VNO_
RON
ΔRON
RFLAT(ON)
NO_ Off-Leakage
Current (Note 7)
INO_(OFF)
COM Off-Leakage Current
(Note 7)
ICOM(OFF)
COM On-Leakage Current
(Note 7)
ICOM(ON)
0
V+ = 4.5V,
ICOM = 10mA,
VNO_ = 0 to V+
TA = +25°C
V+ = 4.5V,
ICOM = 10mA,
VNO_ = 0 to V+
TA = +25°C
V+ = 4.5V,
ICOM = 10mA,
VNO_ = 0 to V+
TA = +25°C
V+ = 5.5V;
VCOM = 1V, 4.5V;
VNO_ = 4.5V, 1V
TA = +25°C
-0.1
TA = TMIN to TMAX
-0.3
V+ = 5.5V;
VCOM = 1V, 4.5V;
VNO_ = 4.5V, 1V
TA = +25°C
-0.1
TA = TMIN to TMAX
-0.65
V+ = 5.5V;
VCOM = 1V, 4.5V;
VNO_ = 1V, 4.5V,
or unconnected
TA = +25°C
-0.1
TA = TMIN to TMAX
-0.65
2.5
4
Ω
TA = TMIN to TMAX
4.5
0.1
0.3
Ω
TA = TMIN to TMAX
0.4
0.75
1
Ω
TA = TMIN to TMAX
1.2
±0.01
+0.1
nA
+0.3
±0.01
+0.1
nA
+0.65
±0.01
+0.1
nA
+0.65
DIGITAL INPUTS
I/O (A_, EN)
Input Logic-High
VIH
Input Logic-Low
VIL
Input Logic Current
2
2.4
-100
V
5
_______________________________________________________________________________________
0.8
V
+100
nA
Fast, Low-Voltage, 4Ω,
4-Channel CMOS Analog Multiplexer
(V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +5V,
TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
14
18
UNITS
DYNAMIC
Turn-On Time (Note 7)
Turn-Off Time (Note 7)
Break-Before-Make Time
(Note 7)
Charge Injection
tON
tOFF
tBBM
Q
VNO_ = 3V,
RL = 300Ω,
CL = 35pF, Figure 2
TA = +25°C
VNO_ = 3V,
RL = 300Ω,
CL = 35pF, Figure 2
TA = +25°C
VNO_ = 3V,
RL = 300Ω,
CL = 35pF, Figure 3
TA = +25°C
ns
TA = TMIN to TMAX
20
6
11
ns
TA = TMIN to TMAX
13
8
ns
TA = TMIN to TMAX
1
VGEN = 2V, RGEN = 0, CL = 5pF, Figure 4
2
Off-Isolation (Note 8)
VISO
CL = 5pF, RL = 50Ω,
Figure 5
f = 10MHz
-57
f = 1MHz
-80
Crosstalk (Note 9)
VCT
CL = 5pF, RL = 50Ω,
Figure 5
f = 10MHz
-52
f = 1MHz
-78
pC
dB
dB
NO_ Off-Capacitance
CNO_(OFF)
Figure 6
13
pF
COM Off-Capacitance
CCOM(OFF)
Figure 6
52
pF
COM On-Capacitance
CCOM(ON)
CL = 5pF, Figure 6
68
pF
0.018
%
Total Harmonic Distortion
THD
RL = 600Ω, f = 20Hz to 20kHz
POWER SUPPLY
Power-Supply Range
V+
Positive Supply Current
I+
1.8
V+ = 5.5V, VIH = V+, VIL = 0
0.001
5.5
V
1.0
µA
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +3V,
TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
On-Resistance
VCOM,
VNO_
RON
On-Resistance Match
Between Channels
(Notes 4, 5)
ΔRON
0
V+ = 2.7V,
ICOM = 10mA,
VNO_ = 0 to V+
TA = +25°C
V+ = 2.7V,
ICOM = 10mA,
VNO_ = 0 to V+
TA = +25°C
4.5
7
Ω
TA = TMIN to TMAX
8
0.1
0.3
Ω
TA = TMIN to TMAX
0.4
_______________________________________________________________________________________
3
MAX4634
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
MAX4634
Fast, Low-Voltage, 4Ω,
4-Channel CMOS Analog Multiplexer
ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)
(V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +3V,
TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
On-Resistance Flatness
(Note 6)
RFLAT(ON)
NO_ Off-Leakage Current
(Note 7)
INO_(OFF)
COM Off-Leakage Current
(Note 7)
ICOM(OFF)
COM On-Leakage Current
(Note 7)
ICOM(ON)
CONDITIONS
MIN
V+ = 2.7V,
ICOM = 10mA,
VNO_ = 0 to V+
TA = +25°C
V+ = 3.3V;
VCOM = 1V, 3V;
VNO_ = 3V, 1V
TA = +25°C
-0.1
TA = TMIN to TMAX
-0.3
V+ = 3.3V;
VCOM = 1V, 3V;
VNO_ = 3V, 1V
TA = +25°C
-0.1
TA = TMIN to TMAX
-0.65
TA = +25°C
-0.1
TA = TMIN to TMAX
-0.65
V+ = 3.3V;
VCOM = 1V, 3V;
VNO_ = 1V, 3V, or
unconnected
TYP
MAX
1.2
2.5
UNITS
Ω
TA = TMIN to TMAX
3
±0.01
+0.1
nA
+0.3
±0.01
+0.1
nA
+0.65
±0.01
+0.1
nA
+0.65
DIGITAL I/O (A_, EN)
Input High
VIH
Input Low
VIL
2.0
Input Logic Current
-100
V
0.4
V
5
+100
nA
16
22
DYNAMIC
Turn-On Time (Note 7)
Turn-Off Time (Note 7)
Break-Before-Make Time
(Note 7)
Charge Injection
tON
tOFF
tBBM
Q
VNO_ = 2V,
CL = 35pF,
RL = 300Ω, Figure 2
TA = +25°C
VNO_ = 2V,
CL = 35pF,
RL = 300Ω, Figure 2
TA = +25°C
VNO_ = 2V,
CL = 35pF,
RL = 300Ω, Figure 3
TA = +25°C
Off-Isolation (Note 8)
VISO
Crosstalk (Note 9)
VCT
CL = 5pF, RL = 50Ω,
Figure 5
24
8
14
ns
TA = TMIN to TMAX
16
9
ns
TA = TMIN to TMAX
VGEN = 1.5V, RGEN = 0, CL = 5pF, Figure 4
CL = 5pF, RL = 50Ω,
Figure 5
4
ns
TA = TMIN to TMAX
1
2
f = 10MHz
-57
f = 1MHz
-80
f = 10MHz
-52
f = 1MHz
-78
_______________________________________________________________________________________
pC
dB
dB
Fast, Low-Voltage, 4Ω,
4-Channel CMOS Analog Multiplexer
(V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +3V,
TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
NO_ Off-Capacitance
CNO_(OFF)
VNO_ = GND, f = 1MHz, Figure 6
CONDITIONS
MIN
TYP
13
MAX
UNITS
pF
COM Off-Capacitance
CCOM(OFF)
VCOM = GND, f = 1MHz, Figure 6
52
pF
COM On-Capacitance
C(ON)
VCOM = VNO_ = GND, f = 1MHz, Figure 6
68
pF
Total Harmonic Distortion
THD
RL = 600Ω, f = 20Hz to 20kHz
0.018
%
V+ = 3.3V, VIH = V+, VIL = 0
0.001
POWER SUPPLY
Positive Supply Current
I+
1
µA
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: TDFN parts are tested at +25°C and guaranteed by design and correlation over the entire temperature range.
Note 4: ΔRON = RON(MAX) - RON(MIN).
Note 5: RON and ΔRON matching specifications for TDFN-packaged parts are guaranteed by design.
Note 6: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 7: Guaranteed by design.
Note 8: Off-isolation = 20log10 (VCOM / VNO), where VCOM = output and VNO = input to off switch.
Note 9: Between any two switches.
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (V+ = +3V)
4.0
MAX4634-02
5.0
MAX4634-01
20
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (V+ = +5V)
TA = +85°C
4.5
3.5
4.0
3.0
15
MAX4634-03
ON-RESISTANCE vs. VCOM
TA = +85°C
10
V+ = 2.5V
RON (Ω)
RON (Ω)
RON (Ω)
V+ = 1.8V
3.5
2.5
V+ = 3.0V
V+ = 5.0V
5
3.0
2.0
TA = +25°C
TA = -40°C
TA = +25°C
2.5
0
0
1
2
VCOM (V)
3
4
5
TA = -40°C
1.5
0
0.5
1.0
1.5
VCOM (V)
2.0
2.5
3.0
0
1
3
2
VCOM (V)
4
_______________________________________________________________________________________
5
5
MAX4634
ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
ON/OFF-ENABLE TIME
vs. SUPPLY VOLTAGE
CHARGE INJECTION vs. VCOM
0.10
30
25
Q (pC)
0.05
0
tON/tOFF (ns)
ICOM(OFF)
1.5
V+ = 3V
1.0
INO_(OFF)
20
tON
15
10
ICOM(ON)
-0.05
MAX4634-06
V+ = 5V
2.0
35
MAX4634-05
2.5
MAX4634-04
0.15
LEAKAGE (nA)
tOFF
0.5
5
-0.10
0
0
-50
0
50
100
0
TEMPERATURE (°C)
1
3
2
VCOM (V)
4
2.5
3.0
3.5
0.4
I+, IGND (μA)
tOFF
MAX4634-08
0.5
MAX4634-07
6
0.3
0.2
4
0.1
2
0
0
-50
0
50
-50
100
0
TEMPERATURE (°C)
LOGIC-LEVEL THRESHOLD
vs. SUPPLY VOLTAGE
100
50
TEMPERATURE (°C)
150
FREQUENCY RESPONSE
MAX4634-11
20
MAX4634-10
2.0
0
BANDWIDTH
1.5
LOSS (dB)
-20
1.0
-40
-60
0.5
CROSSTALK
-80
OFF-ISOLATION
0
-100
1.5
2.0
2.5
3.0
3.5
4.0
SUPPLY VOLTAGE (V)
6
4.5
5.0
4.0
SUPPLY VOLTAGE (V)
tON
8
tON/tOFF (ns)
2.0
POWER-SUPPLY CURRENT
vs. TEMPERATURE
12
10
1.5
5
ON/OFF-ENABLE TIME
vs. TEMPERATURE
LOGIC-LEVEL THRESHOLD (V)
MAX4634
Fast, Low-Voltage, 4Ω,
4-Channel CMOS Analog Multiplexer
0.01
0.1
1
10
100
FREQUENCY (MHz)
_______________________________________________________________________________________
1000
4.5
5.0
Fast, Low-Voltage, 4Ω,
4-Channel CMOS Analog Multiplexer
+5V
D1
PIN
µMAX/
TDFN
NAME
FUNCTION
1
A0
Address Input. See the Truth Table
for details.
2
NO1
Normally Open Switch 1
3
GND
Ground
4
NO3
Normally Open Switch 3
5
EN
Enable Logic Input. See the Truth
Table for details.
V+
Positive Supply Voltage. Connect
to an external power supply.
Bypass to GND with a 10µF
capacitor placed as close to the
pin as possible.
6
7
NO4
Normally Open Switch 4
8
COM
Analog Switch Common Terminal
9
NO2
Normally Open Switch 2
10
A1
Address Input. See the Truth Table
for details.
EP
Exposed Pad. Internally connected
to GND. Connect to a large PCB
ground plane for proper operation.
Not intended as an electrical
connection point (TDFN package
only).
—
MAX4634
Pin Description
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+.
MAX4634
V+
*
*
*
*
NO
COM
D2
GND
*INTERNAL PROTECTION DIODES
Figure 1. Overvoltage Protection Using External Blocking Diodes
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.
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.
_______________________________________________________________________________________
7
Fast, Low-Voltage, 4Ω,
4-Channel CMOS Analog Multiplexer
MAX4634
Test Circuits/Timing Diagrams
VEN = VIH + 0.5
V+
VEN
0
V+
EN
tR < 5ns
tF < 5ns
50%
NO1
V+
NO2–NO4
A0
VOUT
MAX4634
90% 90%
A1
COM
VOUT
GND
50Ω
V+
35pF
300Ω
0
tON
tOFF
Figure 2. Switching Time
V+
VEN
+2.4V
V+
EN
MAX4634
tR < 5ns
tF < 5ns
50%
0
+5V
A0
VA
VIH + 0.5V
LOGIC
INPUT
VA_
+10V
NO1–NO4
90%
A1
COM
SWITCH
OUTPUT
VOUT
VOUT
GND
35pF
tOPEN
0
300Ω
50Ω
Figure 3. Break-Before-Make Interval
+5V
RS
NO
VEN
VS
CHANNEL
SELECT
V+
LOGIC
INPUT
VEN
EN
A0
MAX4634
A1
COM
OFF
ON
OFF
0
VOUT
CL = 5nF
GND
+3V
ΔVOUT
VOUT
ΔVOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = ΔVOUT x CL
Figure 4. Charge Injection
8
_______________________________________________________________________________________
Fast, Low-Voltage, 4Ω,
4-Channel CMOS Analog Multiplexer
V+ 10nF
V+
VIN
V+
EN
OFF-ISOLATION = 20log
VOUT
VIN
ON-LOSS = 20log
VOUT
VIN
CROSSTALK = 20log
VOUT
VIN
NO
MAX4634
V+
NETWORK
ANALYZER
50Ω
50Ω
VOUT
MEAS
REF
COM
A
GND
50Ω
50Ω
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
PROCESS: CMOS
+5V
V+
A1
CHANNEL
SELECT
MAX4634
A0
GND
EN
NO1
NO4
1MHz
CAPACITANCE
ANALYZER
COM
f = 1MHz
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
PACKAGE TYPE
Figure 6. Channel Off/On-Capacitance
PACKAGE CODE
DOCUMENT NO.
10 µMAX
—
21-0061
10 TDFN
T1033-1
21-0137
_______________________________________________________________________________________
9
MAX4634
Test Circuits/Timing Diagrams (continued)
MAX4634
Fast, Low-Voltage, 4Ω,
4-Channel CMOS Analog Multiplexer
Revision History
PAGES
CHANGED
REVISION
NUMBER
REVISION
DATE
0
4/00
Initial release
1
2/02
Added QFN package
—
2
5/03
Added QFN packaging information
—
3
2/09
Added TDFN package information (replaced QFN), style edits
DESCRIPTION
—
1, 7
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.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2009 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.