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Part Number MAX4641

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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.
General Description
The MAX4641/MAX4642/MAX4643 are monolithic, dual,
single-pole/single-throw (SPST) switches that can operate
from a single supply ranging from +1.8V to +5.5V. The
MAX4641/MAX4642/MAX4643 provide low 4
on-resis-
tance (R
ON
), 0.6
R
ON
matching between channels, and
1
R
ON
flatness over the entire analog signal range.
These devices offer fast switching times of less than 20ns
while consuming less than 0.01µW of quiescent power.
The MAX4641 has two normally open (NO) switches,
and the MAX4642 has two normally closed (NC)
switches. The MAX4643 has one NO switch and one NC
switch. All three devices have low 0.35nA leakage cur-
rents over the entire temperature range. The MAX4641/
MAX4642/MAX4643 are available in small 8-pin µMAX
and 8-pin QFN packages.
Applications
Battery-Operated Equipment
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
Features
o +1.8V to +5.5V Single-Supply Operation
o Rail-to-RailTM Analog Signal Range
o Guaranteed R
ON
4
max (+5V supply)
8
max (+3V supply)
o +1.8V Operation
R
ON
30
typ Over Temperature
t
ON
18ns typ, t
OFF
12ns typ
o Guaranteed R
ON
Flatness: 1
(+5V supply)
o Guaranteed R
ON
Match Between Channels
0.6
(+5V supply)
o Low Leakage (<0.35nA) Over Entire Temperature
Range
o Excellent AC Characteristics
Low Crosstalk: -97dB at 1MHz
High Off-Isolation: -80dB at 1MHz
0.018% Total Harmonic Distortion
o Low Power Consumption: < 0.01µW
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4
, Dual SPST
CMOS Analog Switches
________________________________________________________________ Maxim Integrated Products
1
MAX4641
IN_
0
1
NO_
MAX4641
OFF
ON
COM2
IN2
NO2
GND
1
2
8
7
V+
IN1
COM1
NO1
TOP VIEW
3
4
6
5
MAX4642
IN_
0
1
NC_
MAX4642
ON
OFF
COM2
IN2
NC2
GND
1
2
8
7
V+
IN1
COM1
NC1
3
4
6
5
MAX4643
IN_
0
1
NO1
MAX4643
OFF
ON
NC2
ON
OFF
COM2
IN2
NC2
GND
1
2
8
7
V+
IN1
COM1
NO1
3
4
6
5
µMAX
µMAX
µMAX
Pin Configurations/Functional Diagrams/Truth Tables
19-1656; Rev 1; 2/02
Ordering Information
8 µMAX
PIN-PACKAGE
TEMP RANGE
-40°C to +85°C
MAX4643EUA
PART
8 µMAX
-40°C to +85°C
MAX4642EUA
8 µMAX
-40°C to +85°C
MAX4641EUA
Rail-to-Rail is a trademark of Nippon Motorola, Ltd.
8 QFN 3 x 3
-40°C to +85°C
MAX4641EGA
8 QFN 3 x 3
-40°C to +85°C
MAX4642EGA
8 QFN 3 x 3
-40°C to +85°C
MAX4643EGA
Pin Configurations continued at end of data sheet.
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MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4
, Dual SPST
CMOS Analog Switches
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS--Single +5V Supply
(V+ = +4.5V to +5.5V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
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)
V+ .............................................................................-0.3V to +6V
IN_, COM_, NO_, NC_ (Note 1)....................-0.3V to (V+ + 0.3V)
Continuous Current (any terminal)....................................±20mA
Continuous Current (NO_, NC_, COM_)...........................±50mA
Peak Current (NO_, NC_, COM_, pulsed at 1ms,
10% duty cycle)........................................................ ±100mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.5mW/°C above +70°C) ........... 362mW
8-Pin QFN (derate 24.4mW/°C above +70°C) ......... 1951mW
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
V+ = 4.5V,
I
COM_
= 10mA, V
NO_
or V
NC_
= 0 to V+
V
IN_
= 0.8V or 2.4V
V+ = 5.5V, V
COM_
=
1V or 4.5V
V+ = 4.5V, I
COM_
=
10mA, V
NO_
or
V
NC_
= 0 to V+
V+ = 4.5V, I
COM_
=
10mA, V
NO_
or
V
NC_
= 0 to V+
CONDITIONS
µA
-0.1
0.005
0.1
I
IN
IN_ Input Current
V
0.8
V
IL
IN_ Input Logic Low
V
2.4
V
IH
IN_ Input Logic High
2.5
4
R
ON
On-Resistance
V
0
V+
V
COM_
,
V
NO_
,
V
NC_
Analog Signal Range
DIGITAL INPUTS
-0.35
0.35
I
COM_(ON)
nA
-0.25
0.01
0.25
COM_ On-Leakage Current
(Notes 4, 5)
1.5
5
0.2
0.6
R
ON
On-Resistance Match
Between Channels
(Notes 2, 8)
0.8
0.85
1
R
FLAT
On-Resistance Flatness
(Note 3)
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
Note 1: Signals on NO_, NC_, COM_, or IN_ exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to
maximum current rating.
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
V+ = 5.5V, V
COM_
=
1V or 4.5V, V
NO_
or
V
NC_
= 4.5V or 1V
-0.35
0.35
T
A
= T
MIN
to T
MAX
nA
-0.25
0.01
0.25
I
NO_(OFF)
,
I
NC_(OFF)
NO_, NC_ Off-Leakage
Current (Note 4)
T
A
= +25°C
V+ = 5.5V, V
COM_
=
1V or 4.5V, V
NO_
or
V
NC_
= 4.5V or 1V
-0.35
0.35
T
A
= T
MIN
to T
MAX
nA
-0.25
0.01
0.25
I
COM_(OFF)
COM_ Off-Leakage Current
(Note 4)
T
A
= +25°C
T
A
= T
MIN
to T
MAX
ANALOG SWITCH
DIGITAL INPUTS
background image
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4
, Dual SPST
CMOS Analog Switches
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS--Single +5V Supply (continued)
(V+ = +4.5V to +5.5V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
ELECTRICAL CHARACTERISTICS--Single +3V Supply
(V+ = +2.7V to +3.3V, V
INH
= 2.0V, V
INL
= 0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
V+ = 2.7V, I
COM_
=
10mA, V
NO_
or
V
NC_
= 0 to V+
T
A
= +25°C
V+ = 2.7V, I
COM_
=
10mA, V
NO_
or
V
NC_
= 0 to V+
CONDITIONS
6
8
R
ON
On-Resistance
V
0
V+
V
COM_
,
V
NO_
,
V
NC_
Analog Signal Range
T
A
= T
MIN
to T
MAX
9
T
A
= +25°C
T
A
= T
MIN
to T
MAX
0.2
0.6
R
ON
On-Resistance Match
Between Channels
(Notes 2, 8)
0.8
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
T
A
= +25°C
V+ = 2.7V, I
COM_
=
10mA, V
NO_
or
V
NC_
= 0 to V+
T
A
= T
MIN
to T
MAX
1.5
3.0
R
FLAT
On-Resistance Flatness
(Note 3)
3.5
ANALOG SWITCH
%
0.018
R
L
= 600
, 0.5Vp-p, f = 20Hz to 20kHz
THD
Total Harmonic Distortion
µA
0.001
1.0
V+ = 5.5V, V
IN_
= 0 or V+
I+
Positive Supply Current
-77
-56
Crosstalk (Note 7)
V
CT
-97
dB
f = 10MHz
f = 1MHz
C
L
= 5pF, R
L
= 50
,
Figure 3
f = 10MHz
f = 1MHz
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Break-Before-Make (Note 4)
(MAX4643 only)
t
BBM
7
ns
T
A
= T
MIN
to T
MAX
10
Turn-Off Time (Note 4)
t
OFF
5
8
ns
T
A
= T
MIN
to T
MAX
T
A
= +25°C
18
T
A
= T
MIN
to T
MAX
1
Turn-On Time (Note 4)
t
ON
9
15
ns
Charge Injection
Q
2
pC
NO_, NC_ Off-Capacitance
C
NO_ (OFF),
C
NC
_
(OFF)
7
pF
COM_ Off-Capacitance
C
COM_
(OFF)
7
pF
Switch On-Capacitance
C
(ON)
18
pF
Off-Isolation (Note 6)
V
ISO
-80
dB
CONDITIONS
V
GEN
= 0, R
GEN
= 0, C
L
= 1nF, Figure 4
R
L
= 300
,
C
L
= 35pF, V
NO_
=
V
NC_
= 3V, Figure 2
NO_ or NC_ = GND, f = 1MHz, Figure 5
T
A
= +25°C
R
L
= 300
, C
L
=
35pF, V
NO_
= V
NC_
=
3V, Figure 2
T
A
= +25°C
f = 1MHz, Figure 5
f = 1MHz, Figure 5
C
L
= 5pF, R
L
= 50
,
Figure 3
R
L
= 300
, C
L
=
35pF, V
NO_
= V
NC_
=
3V, Figure 2
DYNAMIC
SUPPLY
background image
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4
, Dual SPST
CMOS Analog Switches
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS--Single +3V Supply (continued)
(V+ = +2.7V to +3.3V, V
INH
= 2.0V, V
INL
= 0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
Note 2:
R
ON
= R
ON(MAX)
- R
ON(MIN)
.
Note 3: R
ON
Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal range.
Note 4: Guaranteed by design.
Note 5: On-Leakage performed with voltage applied to COM_, with NO_ and NC_ left floating.
Note 6: Off-Isolation = 20log
10
(V
O_
/ V
I_
), where V
O
is V
COM_
and V
I
is V
NC_
or V
NO_
from the network analyzer.
Note 7: Crosstalk is measured between the two switches.
Note 8: R
ON
and
R
ON
matching specifications for QFN-packaged parts are guaranteed by design.
f =1MHz, Figure 5
NO_ or NC_ = GND, f = 1MHz, Figure 5
C
L
= 5pF, R
L
= 50
,
Figure 3
V
GEN
= 0, R
GEN
= 0, C
L
= 1nF, Figure 4
V
IN_
= 0.4V or 2.0V
R
L
= 300
, C
L
=
35pF, V
NO_
=
V
NC_
= 2V, Figure 2
C
L
= 5pF, R
L
= 50
,
Figure 3
R
L
= 300
, C
L
=
35pF, V
NO_
=
V
NC_
= 2V, Figure 2
CONDITIONS
dB
-77
-80
V
ISO
Off-Isolation (Note 6)
dB
-56
V
0.4
V
IL
IN_ Input Logic Low
V
2.0
V
IH
IN_ Input Logic High
pF
7
C
COM_(OFF)
COM_ Off-Capacitance
pF
7
C
NO_(OFF)
,
C
NC_(OFF)
NO_, NC_ Off-Capacitance
pC
2
Q
Charge Injection
µA
-0.1
0.005
0.1
I
IN
IN_ Input Current
ns
22
t
ON
Turn-On Time (Note 4)
ns
7
t
BBM
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
14
20
T
A
= T
MIN
to T
MAX
T
A
= +25°C
R
L
= 300
, C
L
=
35pF, V
NO_
=
V
NC_
= 2V, Figure 2
ns
11
t
OFF
Turn-Off Time (Note 4)
6
10
T
A
= T
MIN
to T
MAX
T
A
= +25°C
Break-Before-Make (Note 4)
(MAX4643 only)
T
A
= +25°C
T
A
= T
MIN
to T
MAX
1
f =1MHz, Figure 5
pF
18
C
(ON)
Switch On-Capacitance
-97
V
CT
Crosstalk (Note 7)
f = 10MHz
f = 1MHz
f = 10MHz
f = 1MHz
V+ = 3.3V, V
IN_
= 0 or V+
µA
0.001
1.0
I+
Positive Supply Current
DIGITAL INPUTS
DYNAMIC
SUPPLY
background image
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4
, Dual SPST
CMOS Analog Switches
_______________________________________________________________________________________
5
0
15
45
30
60
75
CHARGE INJECTION vs. V
COM
TOC4641/2/3toc04
V
COM
(V)
CHARGE INJECTION (pC)
0
3
4
2
1
5
V+ = 5V
20
15
10
5
0
0
2
1
3
4
5
ON-RESISTANCE vs. V
COM
MAX4641/2/3toc01
V
COM
(V)
R
ON
(
)
V+ = 3.0V
V+ = 2.5V
V+ = 5V
I
COM
= 10mA
V+ = 1.8V
R
ON
(
)
5
4
3
2
1
-40
10
-15
35
60
85
ON-RESISTANCE vs. TEMPERATURE
MAX4641/2/3toc02
TEMPERATURE (°C)
V+ = 3V
V+ = 5V
I
COM
= 10mA
1
-40
85
35
60
-15
10
ON-/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
1000
10
100
MAX4641/2/3toc03
TEMPERATURE (°C)
LEAKAGE (pA)
IN = GND
IN = V+
0
40
20
80
60
120
100
140
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4641/2/3toc05
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
1.8
2.8
3.8
4.8
5.8
IN = GND
IN = V+
2.0
1.5
1.0
0.5
0
1.8
3.4
2.6
4.2
5.0
5.8
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
MAX4641/2/3toc06
SUPPLY VOLTAGE (V)
LOGIC THRESHOLD (V)
0
3
9
6
12
15
SWITCHING TIMES vs. SUPPLY VOLTAGE
TOC4641/2/3toc07
SUPPLY VOLTAGE (V)
SWITCHING TIMES (ns)
2
4
3
5
0
2
6
4
8
10
SWITCHING TIMES vs. TEMPERATURE
TOC4641/2/3toc08
TEMPERATURE (°C)
SWITCHING TIMES (ns)
-40
35
60
10
-15
85
300
250
200
150
100
50
0
-40
10
-15
35
60
85
SUPPLY CURRENT
vs. TEMPERATURE
TOC4641/2/3toc09
TEMPERATURE (°C)
SUPPLY CURRENT (nA)
IN = GND
V+ = 5V
V+ = 3V
V+ = 1.8V
Typical Operating Characteristics
(V+ = +5V or +3V, V
INH
= V+, V
INL
= GND, T
A
= +25°C, unless otherwise noted.)