19-2632; Rev 0; 10/02
4.5
Ω
Dual SPST Analog Switches in UCSP
General Description
The MAX4721/MAX4722/MAX4723 low-voltage, low on-
resistance (R
ON
), dual single-pole/single throw (SPST)
analog switches operate from a single +1.8V to +5.5V
supply. These devices are designed for USB 1.1 and
audio switching applications.
The MAX4721/MAX4722/MAX4723 feature 4.5Ω R
ON
(max) with 1.2Ω flatness and 0.3Ω matching between
channels. These new switches feature guaranteed
operation from +1.8V to +5.5V and are fully specified at
3V and 5V. These switches offer break-before-make
switching (1ns) with t
ON
<80ns and t
OFF
<40ns at
+2.7V. The digital logic inputs are +1.8V logic compati-
ble with a +2.7V to +3.6V supply.
These switches are packaged in a chip-scale package
(UCSP™), significantly reducing the required PC board
area. The chip occupies only a 1.52mm
✕
1.52mm area
and has a 3
✕
3 bump array with a bump pitch of
0.5mm. These switches are also available in an 8-pin
µMAX package.
o
o
o
o
o
o
o
o
o
o
o
o
o
o
USB 1.1 Signal Switching
<2ns Differential Skew
-3dB Bandwidth: >300MHz
Low 15pF On-Channel Capacitance
Low R
ON
(max) Switches
4.5Ω (max) (+3V Supply)
3Ω (max) (+5V Supply)
0.3Ω (max) R
ON
Match (+3V Supply)
1.2Ω (max) R
ON
Flatness (+3V Supply)
<0.5nA Leakage Current at T
A
= +25°C
High Off-Isolation: -55dB (10MHz)
Low Crosstalk: -80dB (10MHz)
Low Distortion: 0.03%
+1.8V CMOS-Logic Compatible
Single-Supply Operation from +1.8V to +5.5V
Rail-to-Rail
®
Signal Handling
Features
MAX4721/MAX4722/MAX4723
Applications
Battery-Operated Equipment
Audio/Video-Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
PART
MAX4721EUA
MAX4721EBL-T*
MAX4722EUA
MAX4722EBL-T*
MAX4723EUA
MAX4723EBL-T*
Ordering Information
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
PIN/BUMP-
PACKAGE
8 µMAX
9 UCSP-9
8 µMAX
9 UCSP-9
8 µMAX
9 UCSP-9
TOP
MARK
—
ABP
—
ABQ
—
ABR
Note:
UCSP package requires special solder temperature pro-
file described in the Absolute Maximum Ratings section.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
UCSP is a trademark of Maxim Integrated Products, Inc.
*UCSP
reliability is integrally linked to the user’s assembly meth-
ods, circuit board material, and environment. See the UCSP reli-
ability notice in the UCSP Reliability section of this data sheet for
more information.
Pin Configurations/Functional Diagrams/Truth Tables
MAX4721
TOP VIEW
(BUMP SIDE DOWN)
A
IN2
B
COM1
C
NO1
V+
IN1
COM2
C
NC1
V+
IN1
GND
NO2
B
COM1
COM2
C
NO1
V+
IN1
A
IN2
GND
NC2
B
COM1
COM2
A
IN2
GND
NC2
IN_
LOW
HIGH
NO_
OFF
ON
NC_
ON
OFF
1
2
3
1
MAX4722
2
3
1
MAX4723
2
3
UCSP
UCSP
UCSP
1
________________________________________________________________
Maxim Integrated Products
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.
4.5
Ω
Dual SPST Analog Switches in UCSP
MAX4721/MAX4722/MAX4723
ABSOLUTE MAXIMUM RATINGS
(All Voltages Referenced to GND, Unless Otherwise Noted.)
V+, IN_...................................................................-0.3V to +6.0V
COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V)
Continuous Current COM_, NO_, NC_ ...........................±100mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle)................................±200mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW
9-Bump UCSP (derate 4.7mW/°C above +70°C).........379mW
ESD Method 3015.7 .............................................................>2kV
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +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 COM_, NO_, or NC_ exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to maxi-
mum 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.
Preheating 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+ = +2.7V to +3.6V, V
IH
= +1.4V, V
IL
= +0.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +3.0V,
T
A
= +25°C, unless otherwise noted.) (Notes 3, 4)
PARAMETER
Analog Signal Range
ANALOG SWITCH
+25°C
On-Resistance (Note 5)
R
ON
V+ = 2.7V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 1.5V
V+ = 2.7V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 1.5V
V+ = 2.7V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 1.0V, 1.5V, 2.0V
V+ = 3.6V, V
COM_
= 0.3V, 3.3V;
V
NO_
or V
NC_
= 3.3V, 0.3V
T
MIN
to
T
MAX
+25°C
On-Resistance Match Between
Channels (Notes 5, 6)
∆R
ON
T
MIN
to
T
MAX
+25°C
On-Resistance Flatness (Note 7)
R
FLAT(ON)
T
MIN
to
T
MAX
+25°C
NO_, NC_ Off-Leakage Current
(Note 8)
I
NO_(OFF),
I
NC_(OFF)
T
MIN
to
T
MAX
+25°C
COM_ Off-Leakage Current
(Note 8)
I
COM_ (OFF),
V+ = 3.6V, V
COM_
= 0.3V, 3.3V;
I
COM_ (OFF)
V
NO_
or V
NC_
= 3.3V, 0.3V
V+ = 3.6V, V
COM_
= 0.3V, 3.3V;
V
NO_
or V
NC_
= 0.3V, 3.3V, or
floating
V
NO_
, V
NC_
= 1.5V;
R
L
= 300Ω, C
L
= 35pF, Figure 1
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
Turn-On Time
t
ON
T
MIN
to
T
MAX
-0.5
-1.5
-0.5
-1.5
-1
-2
40
+0.01
+0.01
+0.01
0.6
0.1
3.0
4.5
5
0.3
0.4
1.2
1.5
+0.5
+1.5
+0.5
+1.5
+1
+2
80
100
ns
nA
nA
nA
Ω
Ω
Ω
SYMBOL
V
COM_
,
V
NO_
, V
NC_
CONDITIONS
T
A
MIN
0
TYP
MAX
V+
UNITS
V
COM_ On-Leakage Current
(Note 8)
I
COM_(ON)
2
_______________________________________________________________________________________
4.5
Ω
Dual SPST Analog Switches in UCSP
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 noted. Typical values are at V+ = +3.0V,
T
A
= +25°C, unless otherwise noted.) (Notes 3, 4)
PARAMETER
DYNAMIC CHARACTERISTICS
+25°C
Turn-Off Time
t
OFF
V
NO_
, V
NC_
= 1.5V;
R
L
= 300Ω, C
L
= 35pF, Figure 1
V
NO_
, V
NC_
= 1.5V;
R
L
= 300Ω, C
L
= 35pF, Figure 2
R
S
= 39Ω, C
L
= 50pF, Figure 3
V
GEN
= 2V, R
GEN
= 0Ω,
C
L
= 1.0nF, Figure 4
f = 10MHz; V
NO_
, V
NC_
= 1V
P-P
;
R
L
= 50Ω, C
L
= 5pF, Figure 5a
f = 1MHz; V
NO_
, V
NC_
= 1V
P-P
;
R
L
= 50Ω, C
L
= 5pF, Figure 5a
f = 10MHz; V
NO_
, V
NC_
= 1V
P-P
;
R
L
= 50Ω, C
L
= 5pF, Figure 5b
f = 1MHz; V
NO_
, V
NC_
= 1V
P-P
;
R
L
= 50Ω, C
L
= 5pF, Figure 5b
Signal = 0dBm, C
L
= 5pF,
R
L
= 50Ω, Figure 5a
R
L
= 600Ω
+25°C
+25°C
+25°C
+25°C
T
MIN
to
T
MAX
T
MIN
to
T
MAX
V+ = +3.6V, V
IN_
= 0 or 5.5V
T
MIN
to
T
MAX
T
MIN
to
T
MAX
V+ = 5.5V, V
IN_
= 0V or V+
T
MIN
to
T
MAX
-0.1
T
MIN
to
T
MAX
+25°C
Break-Before-Make Time Delay
(MAX4723 Only) (Note 8)
Skew (Note 8)
Charge Injection
t
BBM
T
MIN
to
T
MAX
T
MIN
to
T
MAX
+25°C
1
0.15
5
-55
+25°C
-80
-80
+25°C
-110
>300
0.03
9
15
MHz
%
pF
pF
dB
dB
0.2
8
ns
20
40
50
ns
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
MAX4721/MAX4722/MAX4723
t
SKEW
Q
ns
pC
Off-Isolation (Note 9)
V
ISO
Crosstalk (Note 10)
V
CT
On-Channel -3dB Bandwidth
Total Harmonic Distortion
NO_, NC_ Off-Capacitance
Switch On-Capacitance
DIGITAL I/O
Input Logic High Voltage
Input Logic Low Voltage
Input Leakage Current
SUPPLY
Supply Voltage Range
Positive Supply Current
BW
THD
C
NO_(OFF)
f = 1MHz, Figure 6
C
NC_(OFF)
C
(ON)
f = 1MHz, Figure 6
V
IH
V
IL
I
IN
1.4
0.5
+0.1
V
V
µA
V+
I+
1.8
5.5
1
V
µA
_______________________________________________________________________________________
3
4.5
Ω
Dual SPST Analog Switches in UCSP
MAX4721/MAX4722/MAX4723
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = +4.2V to +5.5V, V
IH
= +2.0V, V
IL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +5.0V,
T
A
= +25°C, unless otherwise noted.) (Notes 3, 4)
PARAMETER
Analog Signal Range
ANALOG SWITCH
+25°C
On-Resistance (Note 5)
R
ON
V+ = 4.2V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 3.5V
V+ = 4.2V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 3.5V
V+ = 4.2V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 1.0V, 2.0V, 3.5V
V+ = 5.5V, V
COM_
= 1.0V, 4.5V;
V
NO_
or V
NC_
= 4.5V, 1.0V
T
MIN
to
T
MAX
+25°C
On-Resistance Match Between
Channels (Notes 5, 6)
∆R
ON
T
MIN
to
T
MAX
+25°C
On-Resistance Flatness (Note 7)
R
FLAT(ON)
T
MIN
to
T
MAX
+25°C
NO_, NC_ Off-Leakage Current
(Note 8)
I
NO_(OFF),
I
NC_(OFF)
T
MIN
to
T
MAX
+25°C
COM _ Off-Leakage Current
(Note 8)
V+ = 5.5V, V
COM_
= 1V, 4.5V;
I
COM_(OFF)
V
NO_
or V
NC_
= 4.5V, 1V
V+ = 5.5V, V
COM_
= 1.0V, 4.5V;
V
NO_
or V
NC_
= 1.0V, 4.5V, or
floating
T
MIN
to
T
MAX
+25°C
T
MIN
to
T
MAX
+25°C
Turn-On Time
t
ON
V
NO_
, V
NC_
= 3.0V;
R
L
= 300Ω, C
L
= 35pF, Figure 1
V
NO_
, V
NC_
= 3.0V;
R
L
= 300Ω, C
L
= 35pF, Figure 1
V
NO_
, V
NC_
= 3.0V;
R
L
= 300Ω, C
L
= 35pF, Figure 2
R
S
= 39Ω, C
L
= 50pF, Figure 3
T
MIN
to
T
MAX
+25°C
Turn-Off Time
t
OFF
T
MIN
to
T
MAX
+25°C
Break-Before-Make Time Delay
(MAX4723 Only) (Note 8)
Skew (Note 8)
DIGITAL I/O
Input Logic High Voltage
Input Logic Low Voltage
V
IH
V
IL
T
MIN
to
T
MAX
T
MIN
to
T
MAX
2.0
0.8
V
V
t
BBM
T
MIN
to
T
MAX
T
MIN
to
T
MAX
1
1.5
2
8
ns
20
-0.5
-1.5
-0.5
-1.5
-1
-2
+0.01
+0.01
+0.01
0.4
0.1
1.7
3.0
3.5
0.3
0.4
1.2
1.5
+0.5
+1.5
+0.5
+1.5
+1
+2
nA
nA
nA
Ω
Ω
Ω
SYMBOL
V
COM_
,
V
NO_
, V
NC_
CONDITIONS
T
A
T
MIN
to
T
MAX
MIN
0
TYP
MAX
V+
UNITS
V
COM_ On-Leakage Current
(Note 8)
DYNAMIC CHARACTERISTICS
I
COM_(ON)
30
80
90
40
50
ns
ns
t
SKEW
ns
4
_______________________________________________________________________________________
4.5
Ω
Dual SPST Analog Switches in UCSP
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = +4.2V to +5.5V, V
IH
= +2.0V, V
IL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +5.0V,
T
A
= +25°C, unless otherwise noted.) (Notes 3, 4)
PARAMETER
Input Leakage Current
POWER SUPPLY
Power-Supply Range
Positive Supply Current
V+
I+
V+ = 5.5V, V
IN_
= 0V or V+
T
MIN
to
T
MAX
T
MIN
to
T
MAX
1.8
5.5
1
V
µA
SYMBOL
I
IN
CONDITIONS
V+ = 5.5V, V
IN
_ = 0V or V+
T
A
T
MIN
to
T
MAX
MIN
-0.1
TYP
MAX
+0.1
UNITS
µA
MAX4721/MAX4722/MAX4723
UCSP parts are 100% tested at +25°C only, and guaranteed by design over the specified temperature range. µMAX parts
are 100% tested at T
MAX
and guaranteed by design over the specified temperature range.
Note 4:
The algebraic convention used in this data sheet is where the most negative value is a minimum and the most positive
value is a maximum.
Note 5:
Guaranteed by design for UCSP parts.
Note 6:
∆R
ON
= R
ON(MAX)
- R
ON(MIN)
.
Note 7:
Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 8:
Guaranteed by design.
Note 9:
Off-Isolation = 20log
10
(V
COM
/ V
NO
), V
COM
= output, V
NO
= input to off switch.
Note 10:
Between any two switches.
Note 3:
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. V
COM
MAX4721/22/23 toc01
ON-RESISTANCE vs. V
COM
MAX4721/22/23 toc02
ON-RESISTANCE vs. V
COM
V+ = 5V
MAX4721/22/23 toc03
10
V+ = 1.8V
6
V+ = 3V
5
5
8
4
R
ON
(Ω)
R
ON
(Ω)
4
V+ = 3V
V+ = 4.2V
3
T
A
= +25°C
R
ON
(Ω)
6
V+ = 2.5V
4
T
A
= +85°C
3
T
A
= +85°C
2
2
V+ = 5V
0
1
2
3
4
5
2
T
A
= -40°C
1
0
0.5
1.0
1.5
V
COM
(V)
2.0
2.5
3.0
1
T
A
= -40°C
0
0
1
2
3
4
5
V
COM
(V)
T
A
= +25°C
0
V
COM
(V)
_______________________________________________________________________________________
5
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