MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
General Description
Features
The MAX4729/MAX4730 single-pole/double-throw
(SPDT) switches operate from a single supply ranging
from +1.8V to +5.5V. These switches provide low 3.5Ω
on-resistance (RON), as well as 0.45Ω RON flatness with
a +2.7V supply. These devices typically consume only
1nA of supply current, making them ideal for use in lowpower, portable applications. The MAX4729/MAX4730
feature low-leakage currents over the extended temperature range, TTL/CMOS-compatible digital logic, and
excellent AC characteristics.
o Low 3.5Ω RON (+2.7V Supply)
o 0.45Ω RON Flatness (+2.7V Supply)
o 0.05Ω RON Match Between Channels (+2.7V
Supply)
o Tiny SC70 and µDFN Packages
o -3dB Bandwidth: 300MHz
o Low On-Capacitance: 19.5pF
o 0.036% Total Harmonic Distortion
The MAX4729/MAX4730 are available in small 6-pin
SC70 and 6-pin µDFN packages. The MAX4729/
MAX4730 are offered in three pinout configurations to
ease design. The MAX4729/MAX4730 are specified
over the extended -40°C to +85°C temperature range.
o Low Supply Current: 1nA
o +1.8V to +5.5V Single-Supply Operation
Applications
Battery-Operated Equipment
Audio and Video-Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
Relay Replacement
Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
MAX4729
MAX4729
MAX4730
IN 1
6
NO
NO 1
6
NC
V+ 2
5
COM
V+ 2
5
GND 3
4
NC
IN
3
4
NO 1
6
IN
COM
GND 2
5
V+
GND
NC 3
4
COM
µDFN
SC70
SC70
µDFN
MAX4729/
MAX4730
IN
NC
NO
0
1
ON
OFF
OFF
ON
SWITCHES SHOWN FOR LOGIC 0 INPUT.
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
19-3284; Rev 2; 6/14
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to ground.)
V+, IN .......................................................................-0.3V to +6V
COM, NO, NC (Note 1)..................................-0.3V to (V+ +0.3V)
Continuous Current (IN, V+, GND) ...................................±30mA
Continuous Current (COM, NO, NC) ................................±80mA
Peak Current COM, NO, NC
(Pulsed at 1ms, 10% Duty Cycle)................................±150mA
Continuous Power Dissipation (TA = +70°C)
µDFN (derate 2.1mW/°C above +70°C)........................168mW
SC70 (derate 3.1mW/°C above +70°C) ........................245mW
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
Soldering Temperature (reflow) .......................................+260°C
Note 1: Signals on NO, NC, or COM exceeding V+ or GND are clamped by internal diodes. Signals on IN exceeding GND are
clamped by an internal diode. 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
(V+ = +2.7V to +3.6V, VIH = +2.0V, VIL = +0.4V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
On-Resistance (Note 6)
On-Resistance Match
Between Channels
(Notes 3, 6)
On-Resistance Flatness
(Note 4)
VCOM,
VNO, VNC
RON
ΔRON
RFLAT(ON)
0
V+ = 2.7V, ICOM = 10mA,
VNO or VNC = 0V to V+
TA = +25°C
3.5
TA = -40°C to +85
5.7
V+ = 2.7V, ICOM = 10mA,
TA = +25°C
VNO or VNC = 0.7V, 1.2V, 2V
TA = -40°C to +85
(MAX4729)
0.05
V+ = 2.7V, ICOM = 10mA,
TA = +25°C
VNO or VNC = 0.7V, 1.2V, 2V
TA = -40°C to +85
(MAX4730)
0.2
V+ = 2.7V, ICOM = 10mA,
TA = +25°C
VNO or VNC = 0.7V, 1.2V, 2V
TA = -40°C to +85
(MAX4729)
0.8
V+ = 2.7V, ICOM = 10mA,
TA = +25°C
VNO or VNC = 0.7V, 1.2V, 2V
TA = -40°C to +85
(MAX4730)
0.45
NO, NC Off-Leakage
Current
INO (OFF),
INC (OFF)
V+ = 3.3V, VCOM = 1V, 3V,
VNO or VNC = 3V, 1V
COM On-Leakage Current
ICOM (ON)
V+ = 3.3V, VCOM = 1V or
3V, VNO or VNC = 1V, 3V, or
float
5.5
Ω
0.15
0.2
0.34
Ω
0.37
1.5
2.2
0.95
Ω
1.3
TA = +25°C
-2
TA = -40°C to +85
-3
TA = +25°C
-3
TA = -40°C to +85
-4
2.0
+0.01
+2
nA
+3
+0.01
+3
nA
+4
DIGITAL INPUTS
Input Logic High
VIH
TA = -40°C to +85
Input Logic Low
VIL
TA = -40°C to +85
Input Leakage Current
IIN
2
VIN = 0V or 3.6V
TA = -40°C to +85
-1
V
+0.005
0.4
V
+1
µA
Maxim Integrated
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +3.6V, VIH = +2.0V, VIL = +0.4V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
TA
Turn-On Time (Note 5)
tON
VNO, VNC = 2V, RL = 300Ω,
CL = 35pF, Figure 1
TA = -40°C to +85
Turn-Off Time (Note 5)
tOFF
VNO, VNC = 2V, RL = 300Ω,
CL = 35pF, Figure 1
TA = -40°C to +85
VNO, VNC = 2V, RL = 300Ω,
CL = 35pF, Figure 1
TA = -40°C to +85
MIN
TYP
MAX
18
45
UNITS
DYNAMIC
Break-Before-Make (Note 5)
Charge Injection
Q
TA = +25°C
45
TA = +25°C
10
26
26
TA = +25°C
5
ns
ns
1
VGEN = 0V, RGEN = 0, CL = 1.0nF, Figure 3
ns
3
pC
NO, NC Off-Capacitance
CNO(OFF),
CNC(OFF)
f = 1MHz, Figure 4
6.5
pF
Switch On-Capacitance
CON
f = 1MHz, Figure 4
19.5
pF
Off-Isolation (Note 7)
VISO
VNO = VNC = 1VRMS, RL =
50Ω, CL = 5pF, Figure 2
On-Channel Bandwidth -3dB
f = 1MHz
-67
f = 10MHz
-45
BW
Signal = 0dBm, 50Ω in and out, Figure 2
300
Crosstalk (Note 8)
VCT
NO or NC = 1VRMS, CL =
5pF, RL = 50Ω, Figure 2
Total Harmonic Distortion
THD
RL = 600Ω, VNC or VNO =
2VP-P, f = 20Hz to 20kHz
f = 1MHz
-67
f = 10MHz
-52
+25°C
dB
MHz
dB
0.035
%
POWER SUPPLY
Power-Supply Range
Positive Supply Current
V+
I+
1.8
V+ = 5.5V, VIN = 0V or 5.5V
TA = +25°C
TA = -40°C to +85
5.5
0.001
1
V
µA
Note 2: SC70 and µDFN parts are 100% tested at TA = +25°C. Limits across the full-temperature range are guaranteed by design
and correlation.
Note 3: ΔRON = RON(MAX) - RON(MIN).
Note 4: RON 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: µDFN is guaranteed by design.
Note 7: Off-Isolation = 20log10 (VO / VI), where VO is VCOM and VI is either VNC or VNO from the network analyzer.
Note 8: Crosstalk is measured between the two switches.
Maxim Integrated
3
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
TA = +85°C
35
TA = +25°C
V+ = 2.5V
15
25
20
RON (Ω)
RON (Ω)
TA = -40°C
V+ = 3V
V+ = 4.5V V+ = 5V
10
5
3
2
15
10
TA = +25°C
TA = -40°C
1
5
0
1
2
3
4
5
0
0
0.3
0.6
0.9
1.2
1.5
VCOM (V)
VCOM (V)
ON-RESISTANCE vs. VCOM
(V+ = +5V)
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
TA = +85°C
2.0
1.5
TA = +25°C
1.0
TA = -40°C
0
0.5
1.0
1.5
2.0
2.5
3.0
VCOM (V)
500
ON, VCC = 5V
400
1.8
CHARGE INJECTION vs. VCOM
60
50
CHARGE INJECTION (pC)
2.5
MAX4729 toc04
3.0
ON/OFF-LEAKAGE CURRENT (pA)
0
OFF, VCC = 5V
300
ON, VCC = 3V
200
OFF, VCC = 3V
100
MAX4729 toc06
0
MAX4729 toc05
RON (Ω)
20
RON (Ω)
TA = +85°C
4
30
MAX4729 toc03
V+ = 1.8V
5
MAX4729 toc02
40
MAX4729 toc01
30
25
ON-RESISTANCE vs. VCOM
(V+ = +3V)
ON-RESISTANCE vs. VCOM
(V+ = +1.8V)
ON-RESISTANCE vs. VCOM
40
5V
30
20
0
10
-100
0
3V
1.8V
1
2
3
4
-40
-15
10
35
60
SUPPLY CURRENT vs. TEMPERATURE
SUPPLY CURRENT
vs. LOGIC INPUT VOLTAGE
1,000,000
2
3
4
5
tON/tOFF vs. SUPPLY VOLTAGE
100,000
30
10,000
SUPPLY CURRENT (nA)
V+ = 5V
600
V+ = 3V
400
25
1000
100
V+ = 5V
V+ = 3V
10
tON
20
15
tOFF
1
10
0.1
200
5
0.01
0
0
0.001
-40
-15
10
35
TEMPERATURE (°C)
4
1
35
MAX4729 toc08
MAX4729 toc07
800
0
85
VCOM (V)
TEMPERATURE (°C)
1000
SUPPLY CURRENT (pA)
5
COM VOLTAGE (V)
tON/tOFF (ns)
0
MAX4729 toc09
0
60
85
0
2
4
LOGIC INPUT VOLTAGE (V)
6
1.5
2.5
3.5
4.5
SUPPLY VOLTAGE (V)
5.5
Maxim Integrated
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
tON/tOFF vs. TEMPERATURE
5
V+ = 5V
-50
-15
10
35
60
-50
-70
-70
V+ = 5V
-80
50Ω IN AND OUT
V+ = 3V
1
10
100
0.1
1000
1
10
100
TEMPERATURE (°C)
FREQUENCY (MHz)
FREQUENCY (MHz)
ON-LOSS BANDWIDTH
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
V+ = 5V
OUTPUT IMPEDANCE = 600Ω
f = 20Hz to 20kHz
V+ = 3V, VGEN = 3VP-P
0.05
-2
-4
-6
0.04
V+ = 3V, VGEN = 2VP-P
0.03
V+ = 5V, VGEN = 5VP-P
0.02
-5
OUTPUT IMPEDANCE = 600Ω
MAX4730
V+ = 3V, VGEN = 3VP-P
0.05
THD (%)
THD (%)
0.04
-3
V+ = 3V, VGEN = 2VP-P
0.03
0.02
V+ = 5V, VGEN = 3VP-P
V+ = 5V, VGEN = 5VP-P
0.01
0.01
0
0
V+ = 5V, VGEN = 3VP-P
50Ω IN AND OUT
-7
0.1
1
10
100
1000
1000
0.06
MAX4729 toc14
0.06
MAX4729 toc13
V+ = 3V
0.01
50Ω IN AND OUT
-90
0.1
85
0
-1
-40
-60
-90
-40
-30
-60
-80
0
RESPONSE (dB)
V+ = 5V
-40
MAX4729 toc15
tOFF
10
-20
RESPONSE (dB)
V+ = 5V
V+ = 3V
-10
V+ = 3V
-30
MAX4729 toc12
-20
RESPONSE (dB)
15
0
MAX4729 toc11
-10
tON
20
tON/tOFF (ns)
0
MAX4729 toc10
V+ = 3V
25
CROSSTALK
OFF-ISOLATION
30
0.01
FREQUENCY (MHz)
0.1
1
10
100
0.01
FREQUENCY (kHz)
0.1
1
10
100
FREQUENCY (kHz)
Pin Description
PIN
MAX4729
MAX4730
SC70
µDFN
SC70/µDFN
1
3
6
2
2
3
4
4
6
NAME
IN
Logic-Control Input
5
V+
Positive Supply Voltage
2
GND
3
NC
5
5
4
COM
6
1
1
NO
Maxim Integrated
FUNCTION
Ground
Analog Switch Normally Closed Terminal
Analog Switch Common Terminal
Analog Switch Normally Open Terminal
5
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
Detailed Description
The MAX4729/MAX4730 single-pole/double-throw
(SPDT) switches operate from a single supply ranging
from +1.8V to +5.5V. These switches provide low 3.5Ω
on-resistance (RON), as well as 0.45Ω RON flatness with
a 2.7V supply. These devices typically consume only
1nA of supply current, making them suitable for use in
low-power, portable applications. The MAX4729/
MAX4730 feature low-leakage currents over the entire
temperature range, TTL/CMOS-compatible digital logic,
and excellent AC characteristics.
Applications Information
supply, IN can be driven low to GND and high to +5.5V,
allowing for mixing of logic levels in a system. With a 2.7V
to 3.6V power-supply voltage range, the logic thresholds
are set so VIL = 0.4V (max) and VIH = 2V (min).
Power-Supply Sequencing
and Overvoltage Protection
Caution: Do not exceed the absolute maximum ratings
because stresses beyond the listed ratings can cause
permanent damage to the device. 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.
Digital Control Inputs
The MAX4729/MAX4730 logic inputs accept up to +5.5V,
regardless of supply voltage. For example, with a +3.3V
V+
VNO/NC
V+
NO/NC
NC/NO
V+
OPEN
50%
50%
IN
tr < 5ns
tf < 5ns
0V
MAX4729
MAX4730
COM
VIN
VCOM
IN
RL
GND
VNO/NC
VCOM
0V
CL
90%
90%
tON
tOFF
V+
V+
VS
V+
NO
NC
0V
MAX4729
MAX4730
COM
VIN
IN
VCOM
RL
GND
50%
50%
IN
VS
VS
90%
VCOM
90%
0V
CL
tBBM
tBBM
tBBM = tON(NC) - tOFF(NO) OR tBBM = tON(NO) - tOFF(NC)
Figure 1. Switching Times
6
Maxim Integrated
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
V+ 0.1μF
V+
NETWORK
ANALYZER
50Ω
50Ω
VIN
NO
OR
NC
50Ω
MAX4729
MAX4730
VMEAS
MEAS
COM
V+
VREF
IN
REF
50Ω
GND
MEASUREMENTS ARE STANDARDIZED AGAINST
SHORT AT SOCKET TERMINALS. OFF-ISOLATION IS
MEASURED BETWEEN COM AND “OFF” NO OR NC
TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED
BETWEEN COM AND “ON” TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL
OTHER CHANNELS. SIGNAL DIRECTION THROUGH SWITCH
IS REVERSED; WORST VALUES ARE RECORDED.
50Ω
V
OFF-ISOLATION = 20log MEAS
VREF
V
ON-LOSS = 20log MEAS
VREF
CROSSTALK = 20log
VMEAS
VREF
Figure 2. Off-Isolation/On-Loss Bandwidth, Crosstalk
V+
MAX4729
MAX4730
ΔVOUT
V+
SWITCH
INPUT
RGEN
COM
NO
OR NC
SWITCH
OUTPUT
VOUT
VOUT
CL
V GEN
GND
IN
V+
IN 0V
OFF
ON
OFF
Q = (ΔV OUT )(C L )
LOGIC INPUT (0 TO V+)
Figure 3. Charge Injection
V+
V+
NO
OR
NC
MAX4729
MAX4730
AS
REQUIRED
f = 1MHz
CAPACITANCE
ANALYZER
COM
IN
GND
Figure 4. NO, NC, and COM Capacitance
Maxim Integrated
7
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
Chip Information
PROCESS: CMOS
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
-40°C to +85°C
6 SC70
MAX4729ELT+T
-40°C to +85°C
MAX4730EXT+T
-40°C to +85°C
MAX4730ELT+T
-40°C to +85°C
6 µDFN
MAX4729EXT+T
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
6 µDFN
6 SC70
X6SN+1
21-0077
90-0189
6 SC70
6 µDFN
L611+1
21-0147
90-0080
+Denotes lead(Pb)-free/RoHS-compliant package.
8
Maxim Integrated
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
Revision History
REVISION
NUMBER
REVISION
DATE
2
6/14
DESCRIPTION
ELT+ production status corrected
PAGES
CHANGED
—
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and
max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
© 2014 Maxim Integrated Products, Inc.
9
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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