19-2645; Rev 2 12/06
50
Ω,
Dual SPST Analog Switches in UCSP
General Description
The MAX4731/MAX4732/MAX4733 low-voltage, dual,
single-pole/single-throw (SPST) analog switches oper-
ate from a single +2V to +11V supply and handle rail-
to-rail analog signals. These switches exhibit low
leakage current (0.1nA) and consume less than 0.5nW
(typ) of quiescent power, making them ideal for battery-
powered applications.
When powered from a +3V supply, these switches fea-
ture 50Ω (max) on-resistance (R
ON
) with 3.5Ω (max)
matching between channels, and 9Ω (max) flatness
over the specified signal range.
The MAX4731 has two normally open (NO) switches,
the MAX4732 has two normally closed (NC) switches,
and the MAX4733 has one NO and one NC switch. The
MAX4731/MAX4732/MAX4733 are available in 9-bump
chip-scale packages (UCSP™), along with 8-pin TDFN
and 8-pin µMAX
®
packages. The tiny UCSP occupies a
1.52mm
✕
1.52mm area and significantly reduces the
required PC board area.
Features
o
1.52mm
✕
1.52mm UCSP Package
o
Guaranteed On-Resistance (R
ON
)
25Ω (max) at +5V
50Ω (max) at +3V
o
On-Resistance Matching
3Ω (max) at +5V
3.5Ω (max) at +3V
o
Guaranteed < 0.1nA Leakage Current at
T
A
= +25°C
o
Single-Supply Operation from +2.0V to +11V
o
TTL/CMOS-Logic Compatible
o
-108dB Crosstalk (1MHz)
o
-72dB Off-Isolation (1MHz)
o
Low Power Consumption: 0.5nW (typ)
o
Rail-to-Rail Signal Handling
MAX4731/MAX4732/MAX4733
Ordering Information
PART
MAX4731EUA
MAX4731ETA
MAX4731EBL-
MAX4732EUA
MAX4732ETA
MAX4732EBL-
MAX4733EUA
MAX4733ETA
MAX4733EBL-
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN/BUMP-
PACKAGE
8 µMAX
8 TDFN-EP**
9 UCSP-9
8 µMAX
8 TDFN-EP**
9 UCSP-9
8 µMAX
8 TDFN-EP**
9 UCSP-9
TOP
MARK
—
ALG
ABV
—
ALH
ABT
—
ALI
ABS
Applications
Battery-Powered Systems
Audio/Video-Signal Routing
Low-Voltage Data-Acquisition Systems
Cell Phones
Communications Circuits
PDAs
UCSP is a trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
*Future
product—contact factory for availability.
**EP
= Exposed pad.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
(BUMPS
ON BOTTOM)
NO1
IN1
V+
MAX4731
COM1
MAX4731
A3
B3
GND
IN2
NO2
GND
4
TDFN
5
NO2
NO1
COM1
IN2
1
2
3
8
7
6
V+
IN1
COM2
TOP VIEW
(BUMPS
ON BOTTOM)
NC1
IN1
V+
MAX4732
COM1
MAX4732
A3
B3
GND
IN2
NC2
GND
4
TDFN
5
NC2
NC1
COM1
IN2
1
2
3
8
7
6
V+
IN1
COM2
A1
B1
C1
A2
A1
B1
C1
A2
C2
COM2
UCSP
C3
C2
COM2
UCSP
C3
MAX4731
IN_
NO_
OFF
ON
MAX4732
IN_
0
1
NC_
ON
OFF
Pin Configurations/Functional
Diagrams/Truth Tables
continued at end of data sheet.
0
1
SWITCHES SHOWN
FOR LOGIC "0" INPUT
SWITCHES SHOWN
FOR LOGIC "0" INPUT
________________________________________________________________
Maxim Integrated Products
1
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.
50
Ω,
Dual SPST Analog Switches in UCSP
MAX4731/MAX4732/MAX4733
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.)
V+ ...........................................................................-0.3V to +12V
IN_, COM_, NO_, NC_ (Note 1)....................-0.3V to (V+ + 0.3V)
Continuous Current (any pin) ...........................................±10mA
Peak Current (any pin, pulsed at 1ms, 10% duty cycle) ...±20mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW
8-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW
9-Bump UCSP (derate 4.7mW/°C above +70°C).........379mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Maximum Junction Temperature .....................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Bump Temperature (soldering, Note 2)
Infrared (15s) ...............................................................+220°C
Vapor Phase (60s) .......................................................+215°C
Note 1:
Signals on IN_, NO_, NC_, or COM_ exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to
maximum current rating.
Note 2:
This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device
can be exposed to during board level solder attach and rework. This limit permits only the use of the solder profiles recom-
mended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and Convection reflow. Pre-
heating is required. Hand or wave soldering is not allowed.
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 +3V Supply
(V+ = +3V ±10%, V
IH
= +2.0V, V
IL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +3V, T
A
= +25°C.)
(Notes 3, 4)
PARAMETER
ANALOG SWITCH
Analog Signal Range
V
COM_
,
V
NO_
, V
NC_
R
ON
V+ = +2.7V,
I
COM_
= 5mA;
V
NO_
or V
NC_
= +1.5V
V+ = +2.7V,
I
COM_
= 5mA;
V
NO_
or V
NC_
= +1.5V
V+ = +2.7V,
I
COM_
= 5mA;
V
NO_
or V
NC_
= +1V, +1.5V, +2V
V+ = +3.6V,
V
COM_
= +0.3V, +3V;
V
NO_
or V
NC_
= +3V, +0.3V
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
-0.1
-2
-0.1
-2
-0.2
-4
2.3
0.8
0
19
V+
50
60
3.5
4.5
9
11
+0.1
+2
+0.1
+2
+0.2
+4
nA
nA
nA
Ω
Ω
Ω
V
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
On-Resistance
On-Resistance Matching
Between Channels (Notes 5, 6)
∆R
ON
On-Resistance Flatness
(Note 7)
R
FLAT(ON)
NO_ or NC_ Off-Leakage Current
(Note 8)
I
NO_(OFF)
I
NC_(OFF)
COM_ Off-Leakage Current
(Note 8)
V+ = +3.6V,
I
COM_(OFF)
V
COM_
= +0.3V, +3V;
V
NO_
or V
NC_
= +3V, +0.3V
V+ = +3.6V,
V
COM_
= +0.3V, +3.0V;
V
NO_
or V
NC_
= +0.3V, +3V, or
floating
COM_ On-Leakage Current
(Note 8)
I
COM_(ON)
2
_______________________________________________________________________________________
50
Ω,
Dual SPST Analog Switches in UCSP
ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)
(V+ = +3V ±10%, V
IH
= +2.0V, V
IL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +3V, T
A
= +25°C.)
(Notes 3, 4)
PARAMETER
DYNAMIC CHARACTERISTICS
Turn-On Time
t
ON
V
NO_
or V
NC_
= +1.5V,
R
L
= 300Ω,
C
L
= 35pF, Figure 2
V
NO_
or V
NC_
= +1.5V,
R
L
= 300Ω, C
L
= 35pF,
Figure 2
V
NO_
or V
NC_
= +1.5V,
R
L
= 300Ω, C
L
= 35pF,
Figure 3
V
GEN
= 0V, R
GEN
= 0, C
L
= 1.0nF,
Figure 4
Signal = 0dBm, 50Ω in and out
f = 1MHz, V
COM_
= 1V
RMS
,
R
L
= 50Ω, C
L
= 5pF,
Figure 5
f = 1MHz, V
COM_
= 1V
RMS
,
R
L
= 50Ω, C
L
= 5pF,
Figure 6
f = 1MHz, Figure 7
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
+25°C
+25°C
1
7.5
300
-72
40
ns
30
70
150
170
60
70
ns
ns
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
MAX4731/MAX4732/MAX4733
Turn-Off Time
t
OFF
Break-Before-Make
(MAX4733 Only, Note 8)
Charge Injection
On-Channel -3dB Bandwidth
Off-Isolation (Note 9)
t
BBM
Q
BW
V
ISO
pC
MHz
dB
Crosstalk (Note 10)
NO_ or NC_ Off-Capacitance
COM_ Off-Capacitance
COM_ On-Capacitance
LOGIC INPUT
Input Logic High
Input Logic Low
Input Leakage Current
SUPPLY
Power-Supply Range
Positive Supply Current
V
CT
C
OFF
+25°C
+25°C
+25°C
+25°C
1.4
-108
20
20
40
dB
pF
pF
pF
V
0.8
V
µA
V
µA
C
COM_(OFF)
f = 1MHz, Figure 7
C
COM_(ON)
f = 1MHz, Figure 7
V
IH
V
IL
I
IN
V+
I+
V+ = +5.5V, V
IN_
= 0V or V+,
all switches on or off
V
IN_
= 0V or V+
-1
2.0
+0.005
+1
11
0.0001
1
_______________________________________________________________________________________
3
50
Ω,
Dual SPST Analog Switches in UCSP
MAX4731/MAX4732/MAX4733
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = +5V ±10%, V
IH
= +2.0V, V
IL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +5V, T
A
= +25°C.)
(Notes 3, 4)
PARAMETER
ANALOG SWITCH
Analog Signal Range
V
COM_
,
V
NO_
, V
NC_
R
ON
V+ = +4.5V,
I
COM_
= 5mA,
V
NO_
or V
NC_
= +3.5V
V+ = +4.5V,
I
COM_
= 5mA,
V
NO_
or V
NC_
= +3.5V
V+ = +4.5V,
I
COM_
= 5mA,
V
NO_
or V
NC_
= +1V, +2V, +3V
V+ = +5.5V,
V
COM_
= +1V, +4.5V;
V
NO_
or V
NC_
= +4.5V, +1V
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
-0.1
-2
-0.1
-2
-0.2
-4
2
0.2
0
8.5
V+
25
30
3
4
5
7
+0.1
+2
+0.1
+2
+0.2
+4
nA
nA
nA
Ω
Ω
Ω
V
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
On-Resistance
On-Resistance Matching
Between Channels (Notes 5, 6)
∆R
ON
On-Resistance Flatness
(Note 7)
R
FLAT(ON)
NO_ or NC_ Off-Leakage Current
(Note 8)
I
NO_(OFF)
I
NC_(OFF)
COM_ Off-Leakage Current
(Note 8)
V+ = +5.5V,
I
COM_(OFF)
V
COM_
= +1V, +4.5V;
V
NO_
or V
NC_
= +4.5V, +1V
V+ = +5.5V,
V
COM_
= +1V, +4.5V;
V
NO_
or V
NC_
= +1V, +4.5V, or
floating
COM_ On-Leakage Current
(Note 8)
DYNAMIC CHARACTERISTICS
Turn-On Time
I
COM_(ON)
t
ON
V
NO_
or V
NC_
= +3.0V,
R
L
= 300Ω, C
L
= 35pF,
Figure 2
V
NO_
or V
NC_
= +3.0V,
R
L
= 300Ω, C
L
= 35pF,
Figure 2
V
NO_
or V
NC_
= +3.0V,
R
L
= 300Ω, C
L
= 35pF,
Figure 3
V
GEN
= 0V, R
GEN
= 0,
C
L
= 1.0nF, Figure 4
Signal = 0dBm,
50Ω in and out
f = 1MHz, V
COM_
= 1V
RMS
,
R
L
= 50Ω, C
L
= 5pF,
Figure 5
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
+25°C
1
47
85
95
ns
23
45
55
ns
Turn-Off Time
t
OFF
25
ns
Break-Before-Make
(MAX4733 Only, Note 8)
Charge Injection
On-Channel Bandwidth
t
BBM
Q
BW
7.5
300
pC
MHz
Off-Isolation (Note 9)
V
ISO
+25°C
-72
dB
4
_______________________________________________________________________________________
50
Ω,
Dual SPST Analog Switches in UCSP
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = +5V ±10%, V
IH
= +2.0V, V
IL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +5V, T
A
= +25°C.)
(Notes 3, 4)
PARAMETER
Crosstalk (Note 10)
NO_ or NC_ Off-Capacitance
COM_ Off-Capacitance
COM_ On-Capacitance
LOGIC INPUT
Input Logic High
Input Logic Low
Input Leakage Current
SUPPLY
Power-Supply Range
Positive Supply Current
V+
I+
V+ = +5.5V, V
IN_
= 0V or V+,
all switches on or off
2.0
0.0001
11
1
V
µA
V
IH
V
IL
I
IN
V
IN_
= 0V or V+
-1
+0.005
2.0
0.8
+1
V
V
µA
SYMBOL
V
CT
C
OFF
CONDITIONS
f = 1MHz, V
COM_
= 1V
RMS
,
R
L
= 50Ω, C
L
= 5pF,
Figure 6
f = 1MHz, Figure 7
T
A
+25°C
+25°C
+25°C
+25°C
MIN
TYP
-108
20
20
40
MAX
UNITS
dB
pF
pF
pF
MAX4731/MAX4732/MAX4733
C
COM_(OFF)
f = 1MHz, Figure 7
C
COM_(ON)
f = 1MHz, Figure 7
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 4:
UCSP and TDFN parts are 100% tested at +25°C only, and guaranteed by design over temperature. µMAX parts are
100% tested at +85°C and +25°C and guaranteed by design over temperature.
Note 5:
∆R
ON
= R
ON(MAX)
- R
ON(MIN)
.
Note 6:
UCSP on-resistance matching between channels and on-resistance flatness guaranteed by design.
Note 7:
Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal range.
Note 8:
Guaranteed by design.
Note 9:
Off-Isolation = 20 log
10
(V
NO_
/V
COM_
), V
NO_
= output, V
COM_
= input to off switch.
Note 10:
Between any two switches.
Note 3:
_______________________________________________________________________________________
5
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