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General Description
The MAX4736 is a low on-resistance, low-voltage, dual
single-pole/double throw (SPDT) analog switch that
operates from a single 1.6V to 3.6V supply. This device
has fast switching speeds (t
ON
= 25ns, t
OFF
= 20ns
max), handles Rail-to-Rail
®
analog signals, and con-
sumes less than 4µW of quiescent power. The
MAX4736 has break-before-make switching.
When powered from a 3V supply, the MAX4736 fea-
tures low 0.8
(max) on-resistance (R
ON
), with 0.2
(max) R
ON
matching and 0.1
R
ON
flatness. The digital
logic input is 1.8V CMOS compatible when using a sin-
gle 3V supply.
The MAX4736 has one normally open (NO) switch and
one normally closed (NC) switch, and is available in 12-
pin QFN and 10-pin µMAX packages.
Applications
Power Routing
Battery-Powered Systems
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Communications Circuits
PCMCIA Cards
Cellular Phones
Modems
Hard Drives
Features
o Low R
ON
0.8
max (3V Supply)
2
max (1.8V Supply)
o 0.1 max R
ON
Flatness (3V Supply)
o 1.6V to 3.6V Single-Supply Operation
o Available in QFN and µMAX Packages
o High-Current Handling Capacity (150mA
Continuous)
o 1.8V CMOS Logic Compatible (3V Supply)
o Fast Switching: t
ON
= 25ns, t
OFF
= 20ns
MAX4736
0.8
, Low-Voltage, Single-Supply, Dual SPDT
Analog Switch
________________________________________________________________ Maxim Integrated Products
1
TOP VIEW
MAX4736
MAX4736
IN_
NO_
NC_
0
OFF
ON
1
ON
OFF
SWITCHES SHOWN
FOR LOGIC 0 INPUT
1
2
3
4
5
10
9
8
7
6
NO2
GND
NO1
IN1
µMAX
IN2
NC2
V+
NC1
COM1
COM2
12
IN1
11
COM1
10
N.C.
9
NC1
8
V+
7
NC2
4
IN2
5
COM2
6
N.C.
1
NO1
2
GND
3
NO2
MAX4736
QFN
Pin Configurations/Functional Diagrams/Truth Table
Ordering Information
19-2382; Rev 0; 4/02
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
PART
TEMP RANGE
PIN-PACKAGE
MAX4736EUB
-40°C to +85°C
10 µMAX
MAX4736EGC
-40°C to +85°C
12 QFN
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX4736
0.8
, Low-Voltage, Single-Supply, Dual SPDT
Analog Switch
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS--Single 3V Supply
(V+ = 2.7V to 3.6V, V
IH
= 1.4V, V
IL
= 0.5V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at V+ = 3.0V,
T
A
= +25°C.) (Notes 2, 3)
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.
Note 1: Signals on COM_, NO_, or NC_ exceeding V+ or GND are clamped by internal diodes. Limit forward current to maximum
current rating.
(Voltages Referenced to GND)
V+, IN_......................................................................-0.3V to +4V
COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V)
Continuous Current COM_, NO_, NC_ ...........................±150mA
Continuous Current (all other pins)...................................±20mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms 10% duty cycle)...................................±300mA
Continuous Power Dissipation (T
A
= +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) .............444mW
12-Pin QFN (derate 14.7mW/°C above +70°C) ...........1176mW
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
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
ANALOG SWITCH
Analog Signal Range
V
COM
_,
V
NO
_,
V
NC
_
0
V+
V
+25°C
0.6
0.8
On-Resistance (Note 4)
R
ON
V + = 2.7V ,
I
C OM
_ = 100m A;
V
NO
_ or V
NC
_ = 1.5V
T
MIN
to T
MAX
1
+25°C
0.1
0.2
On-Resistance Match
Between Channels
(Notes 4, 5)
R
ON
V + = 2.7V ,
I
C OM
_ = 100mA;
V
NO
_ or V
NC
_ = 1.5V
T
MIN
to T
MAX
0.3
+25°C
0.05
0.1
On-Resistance Flatness
(Note 6)
R
FLAT(ON)
V+ = 2.7V,
I
COM
_ = 100m A;
V
NO
_ or V
NC
_ = 1V, 1.5V, 2V
T
MIN
to T
MAX
0.2
+25°C
-1
±0.002
+1
NO_ or NC_ Off-Leakage
Current
(Note 10)
I
NO
_
(OFF),
I
NC
_
(OFF)
V + = 3.6V ,
V
C OM
_ = 0.3V, 3.3V;
V
NO
_ or V
NC
_ = 3.3V, 0.3V
T
MIN
to T
MAX
-5
+5
nA
+25°C
-2
±0.002
+2
COM_ On-Leakage Current
(Note 10)
I
COM_(ON)
V+ = 3.6V,
V
C OM
_ = 0.3V, 3.3V;
V
NO
_ or V
NC
_ = 0.3V, 3.3V, or
floating
T
MIN
to T
MAX
-10
+10
nA
MAX4736
0.8
, Low-Voltage, Single-Supply, Dual SPDT
Analog Switch
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS--Single 3V Supply (continued)
(V+ = 2.7V to 3.6V, V
IH
= 1.4V, V
IL
= 0.5V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at V+ = 3.0V,
T
A
= +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
SWITCH DYNAMIC CHARACTERISTICS
+25°C
20
25
Turn-On Time
t
ON
V
NO
_, V
NC
_ = 1.5V;
R
L
= 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
30
ns
+25°C
15
20
Turn-Off Time
t
OFF
V
NO
_, V
NC
_ = 1.5V;
R
L
= 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
25
ns
+25°C
5
Break-Before-Make (Note 7)
t
BBM
V
NO
_, V
NC
_ = 1.5V;
R
L
= 50
, C
L
= 35pF,
Figure 2
T
MIN
to T
MAX
1
ns
Charge Injection
Q
V
GEN
= 0, R
GEN
= 0,
C
L
= 1.0nF, Figure 3
+25°C
60
pC
NO_ or NC_ Off-Capacitance
C
OFF
f = 1MHz, Figure 4
+25°C
33
pF
COM_ Off-Capacitance
C
COM(OFF)
f = 1MHz, Figure 4
+25°C
60
pF
COM_ On-Capacitance
C
COM(ON)
f = 1MHz, Figure 4
+25°C
85
pF
-3dB On-Channel Bandwidth
BW
Signal = 0, R
IN
= R
OUT
=
50
, C
L
= 5pF, Figure 5
130
MHz
Off-Isolation (Note 8)
V
ISO
f = 1M H z, V
COM
_ = 1V
P - P
, R
L
=
50
, C
L
= 5p F, Fi g ur e 5
+25°C
-52
dB
Crosstalk (Note 9)
V
CT
f = 1M H z, V
COM
_ = 1V
P - P
, R
L
=
50
, C
L
= 5p F, Fi g ur e 5
+25°C
-78
dB
Total Harmonic Distortion
THD
f = 20Hz to 20kHz, V
COM
_ =
2V
P-P
, R
L
= 32
+25°C
0.018
%
LOGIC INPUT (A_, IN_)
Input Logic High
V
IH
1.4
V
Input Logic Low
V
IL
0.5
V
Input Leakage Current
I
IN
V
IN_
= 0 or 3.6V
-1
+0.005
+1
µA
POWER SUPPLY
Power-Supply Range
V+
1.6
3.6
V
Positive Supply Current
I+
V+ = 3.6V, V
IN
_ = 0 or V+,
all channels on or off
0.006
1
µA
MAX4736
0.8
, Low-Voltage, Single-Supply, Dual SPDT
Analog Switch
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS--Single 1.8V Supply
(V+ = 1.8V, V
IH
= 1.0V, V
IL
= 0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
ANALOG SWITCH
Analog Signal Range
V
COM
_,
V
NO
_,
V
NC
_
0
V+
V
+25°C
1.5
2
On-Resistance
R
ON
I
COM
_ = 10mA;
V
NO
_ or V
NC
_ = 1V
T
MIN
to T
MAX
3
SWITCH DYNAMIC CHARACTERISTICS
+25°C
25
30
Turn-On Time
t
ON
V
NO
_ or V
NC
_ = 1V;
RL = 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
35
ns
+25°C
18
25
Turn-Off Time
t
OFF
V
NO
_ or V
NC
_ = 1V;
R
L
= 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
28
ns
+25°C
7
Break-Before-Make (Note 7)
t
BBM
V
NO
_ or V
NC
_ = 1V;
R
L
= 50
, C
L
= 35pF,
Figure 2
T
MIN
to T
MAX
1
ns
Charge Injection
Q
V
GEN
= 0, R
GEN
= 0,
C
L
= 1nF, Figure 3
+25°C
35
pC
Off-Isolation (Note 8)
V
ISO
f = 1M H z, V
N O
_ = V
NC
_
= 1V
P - P
, R
L
= 50
,
C
L
= 5p F, Fi g ur e 5
+25°C
-52
dB
Crosstalk (Note 9)
V
CT
f = 1M H z, V
C OM
_ = 1V
P - P
,
R
L
= 50
, C
L
= 5p F, Fi g ur e 5
+25°C
-78
dB
LOGIC INPUT (IN_)
Input Logic High
V
IH
1
V
Input Logic Low
V
IL
0.4
V
Input Leakage Current
I
IN
V
IN
_ = 0 or 3.6V
1
µA
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value is a maximum, is
used in this data sheet.
Note 3: -40°C specifications are guaranteed by design.
Note 4: R
ON
and
R
ON
matching specifications for QFN packaged parts are guaranteed by design.
Note 5:
R
ON
= R
ON(MAX)
- R
ON(MIN)
.
Note 6: Flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 7: Guaranteed by design.
Note 8: Off-Isolation = 20log
10
(V
COM_
/V
NO
_), V
COM_
= output, V
NO
_ = input to OFF switch.
Note 9: Between two switches.
Note 10: Leakage parameters are 100% tested at hot temperature and guaranteed by correlation at room.
MAX4736
0.8
, Low-Voltage, Single-Supply, Dual SPDT
Analog Switch
_______________________________________________________________________________________
5
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. V
COM
MAX4736 toc01
V
COM
(V)
R
ON
(
)
0.5
1.0
1.5
2.0
2.5
0
3
2
1
0
4
V+ = 3.0V
V+ = 3.6V
V+ = 1.6V
V+ = 1.8V
V+ = 2.5V
MAX4736 toc02
V
COM
(V)
R
ON
(
)
2.5
2.0
1.5
1.0
0.5
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
0
3.0
ON-RESISTANCE
vs. V
COM
AND TEMPERATURE
V+ = 1.8V, T
A
= -40
°C
V+ = 1.8V, T
A
= +85
°C
V+ = 3.0V, T
A
= +85
°C
V+ = 1.8V, T
A
= +25
°C
V+ = 3.0V, T
A
= +25
°C
V+ = 3.0V, T
A
= -40
°C
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4736 toc03
TEMPERATURE (
°C)
LEAKAGE CURRENT (pA)
60
35
10
-15
10
100
1000
10,000
1
-40
85
OFF, V+ = 3.0V
ON, V+ = 3.0V
ON, V+ = 1.8V
OFF, V+ = 1.8V
-20
0
-10
30
20
10
60
50
40
70
0
1.0
0.5
2.0
2.5
3.0
CHARGE INJECTION vs. V
COM
MAX4736 toc04
V
COM
(V)
Q (pC)
V+ = 3.0V
V+ = 1.8V
1.5
1000
0.0001
0
0.4
2.0
2.8
SUPPLY CURRENT vs. SUPPLY
VOLTAGE AND TEMPERATURE
0.001
1
100
MAX4736 toc05
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
1.6
3.6
10
0.1
0.01
0.8 1.2
3.2
2.4
T
A
= -40
°C
T
A
= +25
°C
T
A
= +85
°C
0.5
0.7
0.6
1.0
0.9
0.8
1.1
1.2
2.4
2.0
2.8
3.2
3.6
LOGIC-LEVEL THRESHOLD
vs. SUPPLY VOLTAGE
MAX4736 toc06
SUPPLY VOLTAGE (V)
THRESHOLD (V)
1.6
RISING
FALLING
TURN-ON/OFF TIME
vs. SUPPLY VOLTAGE
MAX4736 toc07
SUPPLY VOLTAGE (V)
t
ON
/t
OFF
(ns)
3.2
2.8
2.4
2.0
5
10
15
20
25
30
0
1.6
3.6
t
OFF
t
ON
TURN-ON/OFF TIMES
vs. TEMPERATURE
MAX4736 toc08
TEMPERATURE (
°C)
t
ON
/t
OFF
(ns)
60
35
10
-15
5
10
15
20
25
30
0
-40
85
t
ON
, V+ = 1.8V
t
OFF
, V+ = 1.8V
t
ON
, V+ = 3.0V
t
OFF
, V+ = 3.0V
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