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 4.5
R
ON
(max) with 1.2
flatness and 0.3 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
(UCSPTM), 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
MAX package.
Applications
Battery-Operated Equipment
Audio/Video-Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
Features
o USB 1.1 Signal Switching
o <2ns Differential Skew
o -3dB Bandwidth: >300MHz
o Low 15pF On-Channel Capacitance
o Low R
ON
(max) Switches
4.5
(max) (+3V Supply)
3
(max) (+5V Supply)
o 0.3 (max) R
ON
Match (+3V Supply)
o 1.2 (max) R
ON
Flatness (+3V Supply)
o <0.5nA Leakage Current at T
A
= +25C
o High Off-Isolation: -55dB (10MHz)
o Low Crosstalk: -80dB (10MHz)
o Low Distortion: 0.03%
o +1.8V CMOS-Logic Compatible
o Single-Supply Operation from +1.8V to +5.5V
o Rail-to-Rail
Signal Handling
MAX4721/MAX4722/MAX4723
4.5
Dual SPST Analog Switches in UCSP
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
19-2632; Rev 0; 10/02
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/BUMP-
PACKAGE
TOP
MARK
MAX4721EUA
-40C to +85C
8 MAX
--
MAX4721EBL-T*
-40C to +85C
9 UCSP-9
ABP
MAX4722EUA
-40C to +85C
8 MAX
--
MAX4722EBL-T*
-40C to +85C
9 UCSP-9
ABQ
MAX4723EUA
-40C to +85C
8 MAX
--
MAX4723EBL-T*
-40C to +85C
9 UCSP-9
ABR
MAX4721
UCSP
TOP VIEW
(BUMP SIDE DOWN)
IN_
LOW
HIGH
NO_
OFF
ON
NC_
ON
OFF
C
B
A
1
2
3
IN2
COM1
NO1
GND
V+
NO2
COM2
IN1
MAX4722
C
B
A
1
2
3
IN2
COM1
NC1
GND
V+
NC2
COM2
IN1
MAX4723
C
B
A
1
2
3
IN2
COM1
NO1
GND
V+
NC2
COM2
IN1
UCSP
UCSP
Pin Configurations/Functional Diagrams/Truth Tables
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
UCSP is a trademark of Maxim Integrated Products, Inc.
Note: UCSP package requires special solder temperature pro-
file described in the Absolute Maximum Ratings section.
*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.
MAX4721/MAX4722/MAX4723
4.5
Dual SPST Analog Switches in UCSP
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 noted. Typical values are at V+ = +3.0V,
T
A
= +25C, unless otherwise noted.) (Notes 3, 4)
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.
(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
= +70C)
8-Pin MAX (derate 4.5mW/C above +70C) .............362mW
9-Bump UCSP (derate 4.7mW/C above +70C).........379mW
ESD Method 3015.7 .............................................................>2kV
Operating Temperature Range ...........................-40C to +85C
Junction Temperature ......................................................+150C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10s) .................................+300C
Bump Temperature (soldering) (Note 2)
Infrared (15s) ...............................................................+220C
Vapor Phase (60s) .......................................................+215C
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.
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
Analog Signal Range
V
COM_
,
V
NO_
, V
NC_
0
V+
V
ANALOG SWITCH
+25C
3.0
4.5
On-Resistance (Note 5)
R
ON
V+ = 2.7V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 1.5V
T
MIN
to
T
MAX
5
+25C
0.1
0.3
On-Resistance Match Between
Channels (Notes 5, 6)
R
ON
V+ = 2.7V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 1.5V
T
MIN
to
T
MAX
0.4
+25C
0.6
1.2
On-Resistance Flatness (Note 7)
R
FLAT(ON)
V+ = 2.7V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 1.0V, 1.5V, 2.0V
T
MIN
to
T
MAX
1.5
+25C
-0.5
+0.01
+0.5
NO_, NC_ Off-Leakage Current
(Note 8)
I
NO_(OFF),
I
NC_(OFF)
V+ = 3.6V, V
COM_
= 0.3V, 3.3V;
V
NO_
or V
NC_
= 3.3V, 0.3V
T
MIN
to
T
MAX
-1.5
+1.5
nA
+25C
-0.5
+0.01
+0.5
COM_ Off-Leakage Current
(Note 8)
I
C OM _ (OF F) ,
I
C OM _ (OF F)
V+ = 3.6V, V
COM_
= 0.3V, 3.3V;
V
NO_
or V
NC_
= 3.3V, 0.3V
T
MIN
to
T
MAX
-1.5
+1.5
nA
+25C
-1
+0.01
+1
COM_ On-Leakage Current
(Note 8)
I
COM_(ON)
V+ = 3.6V, V
COM_
= 0.3V, 3.3V;
V
NO_
or V
NC_
= 0.3V, 3.3V, or
floating
T
MIN
to
T
MAX
-2
+2
nA
+25C
40
80
Turn-On Time
t
ON
V
NO_
, V
NC_
= 1.5V;
R
L
= 300
, C
L
= 35pF, Figure 1
T
MIN
to
T
MAX
100
ns
MAX4721/MAX4722/MAX4723
4.5
Dual SPST Analog Switches in UCSP
_______________________________________________________________________________________
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 noted. Typical values are at V+ = +3.0V,
T
A
= +25C, unless otherwise noted.) (Notes 3, 4)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
DYNAMIC CHARACTERISTICS
+25C
20
40
Turn-Off Time
t
OFF
V
NO_
, V
NC_
= 1.5V;
R
L
= 300
, C
L
= 35pF, Figure 1
T
MIN
to
T
MAX
50
ns
+25C
8
Break-Before-Make Time Delay
(MAX4723 Only) (Note 8)
t
BBM
V
NO_
, V
NC_
= 1.5V;
R
L
= 300
, C
L
= 35pF, Figure 2
T
MIN
to
T
MAX
1
ns
Skew (Note 8)
t
SKEW
R
S
= 39
, C
L
= 50pF, Figure 3
T
MIN
to
T
MAX
0.15
0.2
ns
Charge Injection
Q
V
GEN
= 2V, R
GEN
= 0
,
C
L
= 1.0nF, Figure 4
+25C
5
pC
f = 10MHz; V
NO_
, V
NC_
= 1V
P-P
;
R
L
= 50
, C
L
= 5pF, Figure 5a
-55
Off-Isolation (Note 9)
V
ISO
f = 1MHz; V
NO_
, V
NC_
= 1V
P-P
;
R
L
= 50
, C
L
= 5pF, Figure 5a
+25C
-80
dB
f = 10MHz; V
NO_
, V
NC_
= 1V
P-P
;
R
L
= 50
, C
L
= 5pF, Figure 5b
-80
Crosstalk (Note 10)
V
CT
f = 1MHz; V
NO_
, V
NC_
= 1V
P-P
;
R
L
= 50
, C
L
= 5pF, Figure 5b
+25C
-110
dB
On-Channel -3dB Bandwidth
BW
Signal = 0dBm, C
L
= 5pF,
R
L
= 50
, Figure 5a
+25C
>300
MHz
Total Harmonic Distortion
THD
R
L
= 600
+25C
0.03
%
NO_, NC_ Off-Capacitance
C
NO_(OFF)
C
NC_(OFF)
f = 1MHz, Figure 6
+25C
9
pF
Switch On-Capacitance
C
(ON)
f = 1MHz, Figure 6
+25C
15
pF
DIGITAL I/O
Input Logic High Voltage
V
IH
T
MIN
to
T
MAX
1.4
V
Input Logic Low Voltage
V
IL
T
MIN
to
T
MAX
0.5
V
Input Leakage Current
I
IN
V+ = +3.6V, V
IN_
= 0 or 5.5V
T
MIN
to
T
MAX
-0.1
+0.1
A
SUPPLY
Supply Voltage Range
V+
T
MIN
to
T
MAX
1.8
5.5
V
Positive Supply Current
I+
V+ = 5.5V, V
IN_
= 0V or V+
T
MIN
to
T
MAX
1
A
MAX4721/MAX4722/MAX4723
4.5
Dual SPST Analog Switches in UCSP
4
_______________________________________________________________________________________
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
= +25C, unless otherwise noted.) (Notes 3, 4)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
Analog Signal Range
V
COM_
,
V
NO_
, V
NC_
T
MIN
to
T
MAX
0
V+
V
ANALOG SWITCH
+25C
1.7
3.0
On-Resistance (Note 5)
R
ON
V+ = 4.2V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 3.5V
T
MIN
to
T
MAX
3.5
+25C
0.1
0.3
On-Resistance Match Between
Channels (Notes 5, 6)
R
ON
V+ = 4.2V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 3.5V
T
MIN
to
T
MAX
0.4
+25C
0.4
1.2
On-Resistance Flatness (Note 7)
R
FLAT(ON)
V+ = 4.2V, I
COM_
= 10mA;
V
NO_
or V
NC_
= 1.0V, 2.0V, 3.5V
T
MIN
to
T
MAX
1.5
+25C
-0.5
+0.01
+0.5
NO_, NC_ Off-Leakage Current
(Note 8)
I
NO_(OFF),
I
NC_(OFF)
V+ = 5.5V, V
COM_
= 1.0V, 4.5V;
V
NO_
or V
NC_
= 4.5V, 1.0V
T
MIN
to
T
MAX
-1.5
+1.5
nA
+25C
-0.5
+0.01
+0.5
COM _ Off-Leakage Current
(Note 8)
I
C OM _( OF F )
V+ = 5.5V, V
COM_
= 1V, 4.5V;
V
NO_
or V
NC_
= 4.5V, 1V
T
MIN
to
T
MAX
-1.5
+1.5
nA
+25C
-1
+0.01
+1
COM_ On-Leakage Current
(Note 8)
I
COM_(ON)
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
-2
+2
nA
DYNAMIC CHARACTERISTICS
+25C
30
80
Turn-On Time
t
ON
V
NO_
, V
NC_
= 3.0V;
R
L
= 300
, C
L
= 35pF, Figure 1
T
MIN
to
T
MAX
90
ns
+25C
20
40
Turn-Off Time
t
OFF
V
NO_
, V
NC_
= 3.0V;
R
L
= 300
, C
L
= 35pF, Figure 1
T
MIN
to
T
MAX
50
ns
+25C
8
Break-Before-Make Time Delay
(MAX4723 Only) (Note 8)
t
BBM
V
NO_
, V
NC_
= 3.0V;
R
L
= 300
, C
L
= 35pF, Figure 2
T
MIN
to
T
MAX
1
ns
Skew (Note 8)
t
SKEW
R
S
= 39
, C
L
= 50pF, Figure 3
T
MIN
to
T
MAX
1.5
2
ns
DIGITAL I/O
Input Logic High Voltage
V
IH
T
MIN
to
T
MAX
2.0
V
Input Logic Low Voltage
V
IL
T
MIN
to
T
MAX
0.8
V
MAX4721/MAX4722/MAX4723
4.5
Dual SPST Analog Switches in UCSP
_______________________________________________________________________________________
5
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
= +25C, unless otherwise noted.) (Notes 3, 4)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
Input Leakage Current
I
IN
V+ = 5.5V, V
IN
_ = 0V or V+
T
MIN
to
T
MAX
-0.1
+0.1
A
POWER SUPPLY
Power-Supply Range
V+
T
MIN
to
T
MAX
1.8
5.5
V
Positive Supply Current
I+
V+ = 5.5V, V
IN_
= 0V or V+
T
MIN
to
T
MAX
1
A
Note 3:
UCSP parts are 100% tested at +25C only, and guaranteed by design over the specified temperature range. MAX 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.
ON-RESISTANCE vs. V
COM
MAX4721/22/23 toc01
V
COM
(V)
R
ON
(
)
4
3
2
1
2
4
6
8
10
0
0
5
V+ = 1.8V
V+ = 2.5V
V+ = 3V
V+ = 4.2V
V+ = 5V
ON-RESISTANCE vs. V
COM
MAX4721/22/23 toc02
V
COM
(V)
R
ON
(
)
2.5
2.0
1.5
1.0
0.5
2
3
4
5
6
1
0
3.0
T
A
= +85
C
T
A
= +25
C
T
A
= -40
C
V+ = 3V
ON-RESISTANCE vs. V
COM
MAX4721/22/23 toc03
V
COM
(V)
R
ON
(
)
4
3
2
1
1
2
3
4
5
0
0
5
V+ = 5V
T
A
= +85
C
T
A
= -40
C
T
A
= +25
C
Typical Operating Characteristics
(T
A
= +25C, unless otherwise noted.)
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