MAXIM MAX4641, MAX4642, MAX4643 Technical data

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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 4on-resis­tance (RON), 0.6Ω RONmatching between channels, and 1RONflatness 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 cur­rents 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
+1.8V to +5.5V Single-Supply OperationRail-to-Rail™ Analog Signal RangeGuaranteed R
ON
4max (+5V supply) 8max (+3V supply)
+1.8V Operation
RON30typ Over Temperature tON18ns typ, t
OFF
12ns typ
Guaranteed RONFlatness: 1(+5V supply) ♦ Guaranteed RONMatch Between Channels
0.6(+5V supply)
Low Leakage (<0.35nA) Over Entire Temperature
Range
Excellent AC Characteristics
Low Crosstalk: -97dB at 1MHz High Off-Isolation: -80dB at 1MHz
0.018% Total Harmonic Distortion
Low Power Consumption: < 0.01µW
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4, Dual SPST
CMOS Analog Switches
________________________________________________________________ Maxim Integrated Products 1
Pin Configurations/Functional Diagrams/Truth Tables
19-1656; Rev 1; 2/02
Ordering Information
8 µMAX
PIN-PACKAGETEMP 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°CMAX4641EGA
8 QFN 3 x 3-40°C to +85°CMAX4642EGA
8 QFN 3 x 3-40°C to +85°CMAX4643EGA
Pin Configurations continued at end of data sheet.
查询MAX4641EGA供应商
TOP VIEW
MAX4641
1
NO1
2
COM1
3
IN2
4
GND
µMAX
MAX4641
IN_
0
1
NO_
OFF
ON
MAX4642
8
V+
IN1
7
6
COM2
NO2
5
NC1
COM1
IN2
GND
1
2
3
4
µMAX
MAX4642
IN_
0
1
NC_
ON
OFF
8
V+
IN1
7
6
COM2
NC2
5
NO1
COM1
IN2
GND
IN_
0
1
MAX4643
1
2
3
4
µMAX
MAX4643
NO1
OFF
ON
8
V+
IN1
7
6
COM2
NC2
5
NC2
ON
OFF
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, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +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 0.1I
IN
IN_ Input Current
V0.8V
IL
IN_ Input Logic Low
V2.4V
IH
IN_ Input Logic High
2.5 4
R
ON
On-Resistance
V0V+
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)
UNITSMIN TYP MAXSYMBOLPARAMETER
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.
TA= +25°C
TA= T
MIN
to T
MAX
TA= +25°C
TA= T
MIN
to T
MAX
TA= +25°C
TA= T
MIN
to T
MAX
TA= +25°C
V+ = 5.5V, V
COM_
=
1V or 4.5V, V
NO_
or
V
NC_
= 4.5V or 1V
-0.35 0.35TA= 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)
TA= +25°C
V+ = 5.5V, V
COM_
=
1V or 4.5V, V
NO_
or
V
NC_
= 4.5V or 1V
-0.35 0.35TA= T
MIN
to T
MAX
nA
-0.25 0.01 0.25
I
COM_(OFF)
COM_ Off-Leakage Current (Note 4)
TA= +25°C
TA= T
MIN
to T
MAX
ANALOG SWITCH
DIGITAL INPUTS
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, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = +2.7V to +3.3V, V
INH
= 2.0V, V
INL
= 0.4V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
V+ = 2.7V, I
COM_
=
10mA, V
NO_
or
V
NC_
= 0 to V+
TA= +25°C
V+ = 2.7V, I
COM_
=
10mA, V
NO_
or
V
NC_
= 0 to V+
CONDITIONS
68
R
ON
On-Resistance
V0V+
V
COM_
,
V
NO_,
V
NC_
Analog Signal Range
TA= T
MIN
to T
MAX
9
TA= +25°C
TA= T
MIN
to T
MAX
0.2 0.6
R
ON
On-Resistance Match Between Channels (Notes 2, 8)
0.8
UNITSMIN TYP MAXSYMBOLPARAMETER
TA= +25°C
V+ = 2.7V, I
COM_
=
10mA, V
NO_
or
V
NC_
= 0 to V+
TA= T
MIN
to T
MAX
1.5 3.0
R
FLAT
On-Resistance Flatness (Note 3)
3.5
ANALOG SWITCH
%0.018RL= 600, 0.5Vp-p, f = 20Hz to 20kHzTHDTotal Harmonic Distortion
µA0.001 1.0V+ = 5.5V, V
IN_
= 0 or V+I+Positive Supply Current
-77
-56
Crosstalk (Note 7) V
CT
-97
dB
f = 10MHz
f = 1MHz
CL= 5pF, RL= 50Ω, Figure 3
f = 10MHz
f = 1MHz
PARAMETER SYMBOL MIN TYP MAX UNITS
Break-Before-Make (Note 4) (MAX4643 only)
t
BBM
7
ns
TA= T
MIN
to T
MAX
10
Turn-Off Time (Note 4) t
OFF
58
ns
TA= T
MIN
to T
MAX
TA= +25°C
18
TA= T
MIN
to T
MAX
1
Turn-On Time (Note 4) t
ON
915
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, CL= 1nF, Figure 4
RL= 300, C
L
= 35pF, V
NO_
=
V
NC_
= 3V, Figure 2
NO_ or NC_ = GND, f = 1MHz, Figure 5
TA= +25°C
RL= 300, CL= 35pF, V
NO_
= V
NC_
=
3V, Figure 2
TA= +25°C
f = 1MHz, Figure 5
f = 1MHz, Figure 5
CL= 5pF, RL= 50Ω, Figure 3
RL= 300, CL= 35pF, V
NO_
= V
NC_
=
3V, Figure 2
DYNAMIC
SUPPLY
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, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +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(VO_
/ VI_), where VOis V
COM_
and VIis V
NC_
or V
NO_
from the network analyzer.
Note 7: Crosstalk is measured between the two switches. Note 8: R
ON
and ∆RONmatching specifications for QFN-packaged parts are guaranteed by design.
f =1MHz, Figure 5
NO_ or NC_ = GND, f = 1MHz, Figure 5
CL= 5pF, RL= 50Ω, Figure 3
V
GEN
= 0, R
GEN
= 0, CL= 1nF, Figure 4
V
IN_
= 0.4V or 2.0V
RL= 300, CL= 35pF, V
NO_
=
V
NC_
= 2V, Figure 2
CL= 5pF, RL= 50Ω, Figure 3
RL= 300, CL= 35pF, V
NO_
=
V
NC_
= 2V, Figure 2
CONDITIONS
dB
-77
-80
V
ISO
Off-Isolation (Note 6) dB
-56
V0.4V
IL
IN_ Input Logic Low
V2.0V
IH
IN_ Input Logic High
pF7C
COM_(OFF)
COM_ Off-Capacitance
pF7
C
NO_(OFF)
,
C
NC_(OFF)
NO_, NC_ Off-Capacitance
pC2QCharge Injection
µA-0.1 0.005 0.1I
IN
IN_ Input Current
ns
22
t
ON
Turn-On Time (Note 4)
ns
7
t
BBM
UNITSMIN TYP MAXSYMBOLPARAMETER
14 20
TA= T
MIN
to T
MAX
TA= +25°C
RL= 300, CL= 35pF, V
NO_
=
V
NC_
= 2V, Figure 2
ns
11
t
OFF
Turn-Off Time (Note 4)
610
TA= T
MIN
to T
MAX
TA= +25°C
Break-Before-Make (Note 4) (MAX4643 only)
TA= +25°C
TA= T
MIN
to T
MAX
1
f =1MHz, Figure 5 pF18C
(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+ µA0.001 1.0I+Positive Supply Current
DIGITAL INPUTS
DYNAMIC
SUPPLY
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4, Dual SPST
CMOS Analog Switches
_______________________________________________________________________________________ 5
Typical Operating Characteristics
(V+ = +5V or +3V, V
INH
= V+, V
INL
= GND, TA= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. V
20
I
= 10mA
COM
15
()
10
ON
R
5
0
021 345
CHARGE INJECTION vs. V
75
V+ = 5V
60
45
30
CHARGE INJECTION (pC)
15
0
034215
V+ = 1.8V
V+ = 2.5V
V+ = 3.0V
V
(V)
COM
V
COM
(V)
COM
MAX4641/2/3toc01
()
ON
R
V+ = 5V
COM
140
120
TOC4641/2/3toc04
100
SUPPLY CURRENT (nA)
SWITCHING TIMES vs. SUPPLY VOLTAGE
15
12
9
6
SWITCHING TIMES (ns)
3
TOC4641/2/3toc07
SWITCHING TIMES (ns)
ON-RESISTANCE vs. TEMPERATURE
5
I
= 10mA
COM
4
V+ = 3V
3
V+ = 5V
2
1
-40 10-15 35 60 85 TEMPERATURE (°C)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
IN = GND
80
60
40
20
0
1.8 2.8 3.8 4.8 5.8 SUPPLY VOLTAGE (V)
SWITCHING TIMES vs. TEMPERATURE
10
8
6
4
2
IN = V+
1000
MAX4641/2/3toc02
100
LEAKAGE (pA)
10
2.0
MAX4641/2/3toc05
1.5
1.0
LOGIC THRESHOLD (V)
0.5
300
250
TOC4641/2/3toc08
200
150
100
SUPPLY CURRENT (nA)
50
ON-/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
IN = V+
IN = GND
1
-40 8535 60-15 10 TEMPERATURE (°C)
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
0
1.8 3.42.6 4.2 5.0 5.8 SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. TEMPERATURE
IN = GND
V+ = 5V
V+ = 3V
V+ = 1.8V
MAX4641/2/3toc03
MAX4641/2/3toc06
TOC4641/2/3toc09
0
2435
SUPPLY VOLTAGE (V)
0
-40 35 6010-15 85 TEMPERATURE (°C)
0
-40 10-15 35 60 85 TEMPERATURE (°C)
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V+ = +5V or +3V, V
INH
= V+, V
INL
= GND, TA= +25°C, unless otherwise noted.)
NAME FUNCTION
MAX4641
1, 5 NO1, NO2 Analog Switch Normally Open Terminals
NC1, NC2 Analog Switch Normally Closed Terminals
NO1 Analog Switch Normally Open Terminal
4 GND Ground
3, 7 IN2, IN1 Logic-Controlled Inputs
2, 6 COM1, COM2 Analog Switch Common Terminals
NC2 Analog Switch Normally Closed Terminal
8 V+ Positive Supply Input. Bypass with a 0.1µF capacitor to GND.
Pin Description
0
0.01 0.1 1 10 100 1000
-10
-40
-50
-30
-20
-60
-70
-80
-90
-100
FREQUENCY RESPONSE
MAX4641/2/3toc10
FREQUENCY (MHz)
(dB/div)
OFF-ISOLATION
ON-LOSS
V+ = 5V
0
0.01 1 100.1 100
MAX4641/2/3toc11
FREQUENCY (MHz)
CROSSTALK (dB)
-100
-80
-60
-40
-20
CROSSTALK vs. FREQUENCY
0.05
0.01 1 100.1 100
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX4641/2/3toc12
FREQUENCY (kHz)
THD (%)
0
0.01
0.02
0.03
0.04
V+ = 5V
MAX4643
PIN
1
4
3, 7
2, 6
5
8
MAX4642
1, 5
4
3, 7
2, 6
8
Note: NO_, NC_, and COM_ pins are identical and interchangeable. Signals can be passed through either side of these bidirectional switches. However, the typical off-capacitances differ, as shown in the Electrical Characteristics.
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4, Dual SPST
CMOS Analog Switches
_______________________________________________________________________________________ 7
Applications Information
The MAX4641/MAX4642/MAX4643 operate from a sin­gle supply ranging from +1.8V to +5.5V. The devices are guaranteed to be functional over that supply range, but TTL/CMOS compatibility is only valid for operation using a +5V supply. All voltage levels are referenced to GND. Positive and negative DC analog inputs or AC signals can be accommodated by shifting V+ and GND.
ESD-protection diodes are internally connected be­tween each analog-signal pin and both V+ and GND. One of these diodes conducts if any analog signal
exceeds V+ or GND (Figure 1). Virtually all of the ana­log leakage current comes from the ESD diodes to V+ or GND. Although the ESD diodes on a given signal pin are identical, and therefore fairly well balanced, they are reverse biased differently. Each is biased by either V+ or GND and the analog signal. This means their leakages will vary as the signal varies. The difference in the two diode leakages to the V+ and GND pins consti­tutes the analog-signal-path leakage current. All analog leakage current flows between each pin and one of the supply terminals, not to the other switch terminal. This is why both sides of a given switch can show leakage currents of the same or opposite polarity.
There is no normal current path between the analog­signal paths and V+ or GND. V+ and GND also power the internal logic and logic-level translators. The logic­level translators convert the logic level into switched V+ and GND signals to drive the analog signal gates.
Figure 1. Overvoltage Protection Using External Blocking Diodes
Pin Configurations/Functional Diagrams/Truth Tables (continued)
TOP VIEW
MAX4641
NO1
COM1
IN2
GND
1
2
3
4
QFN
MAX4641
IN_
0
1
NO_
OFF
ON
8
V+
IN1
7
6
COM2
NO2
5
NC1
COM1
IN2
GND
V+
NO_, NC_
GND
COM
MAX4642
1
2
3
4
QFN
MAX4642
IN_
0
1
NC_
ON
OFF
8
V+
IN1
7
6
COM2
NC2
5
NO1
COM1
IN2
GND
IN_
MAX4643
1
2
3
4
QFN
MAX4643
NO1
0
1
OFF
ON
8
V+
IN1
7
6
COM2
NC2
5
NC2
ON
OFF
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches
8 _______________________________________________________________________________________
Figure 2. Switching Times
50
50
NO_OPEN
IN_
NC_OPEN
IN_
V+
V+
MAX4641
GND
V+
V+
MAX4642
GND
V+
NO_
COM_
NC_
COM_
V
V
NO_
300
NC_
300
< 5ns
t
R
V
+ 0.5V
V
V
IH
IN_
COM_
V
IH
IN_
COM_
V
NO_
+ 0.5V
V
NC_
50% 50%
0
0
t
ON
0
0
50% 50%
t
OFF
V
COM_
35pF
V
COM_
35pF
tF < 5ns
90%90%
t
OFF
90%90%
t
ON
V
V+
NC_V
S
NO_
V
S
IH
IN_
+ 0.5V
MAX4643
50
IN_
GND
COM_
300
35pF
V
COM_
V
t
t
COM_
BBM
BBM
= t
= t
V
ON(NO_)
ON(NC_)
0
S
0
OR
- t
- t
OFF(NC_)
OFF(NO_)
t
BBM
90%
90%
t
BBM
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4, Dual SPST
CMOS Analog Switches
_______________________________________________________________________________________ 9
Figure 5. NO_, NC_, and COM_ Capacitance
Figure 3. Off-Isolation, On-Loss, and Crosstalk
Figure 4. Charge Injection
Chip Information
TRANSISTOR COUNT: 105
MAX4641
V+
MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM AND OFF TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM AND ON TERMINAL ON EACH SWITCH. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
MAX4642 MAX4643
IN_
GND
0.1µF
V+
NETWORK
IN
50
MEAS REF
50 50
ANALYZER
V
OUT
V
IN
50
V
OUT
V
IN
V+
NO_
OR
NC_
COM_
*
V
V
OUT
OFF-ISOLATION = 20log
ON-LOSS = 20log
* ADD 50 TERMINATION FOR OFF-ISOLATION
V+
V+
MAX4641
V
IN
50
V+
V
IN
0
V
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
V
OUT
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = V
OUT x CL
IN_
MAX4642 MAX4643
GND
NO_
NC_
COM_
V+
V
OR V
V
C
L
1000pF
OUT
NC_
= 0V
REQUIRED
V+
NO_
OR
NC_
MAX4641
IN_
MAX4642 MAX4643
GND
COM_
AS
1MHz
CAPACITANCE
ANALYZER
OR
NO_
MAX4642MAX4641
V
OUT
MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4, Dual SPST CMOS Analog Switches
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Package Information
8LUMAXD.EPS
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