19-3159; Rev 0; 1/04
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
General Description
The MAX4706/MAX4707 single-pole/single-throw
(SPST) switches operate from a single 1.8V to 5.5V sup-
ply. The MAX4706 is a normally closed (NC) switch and
the MAX4707 is the normally open (NO) version. These
switches provide 2Ω on-resistance (R
ON
) and 0.6Ω
R
ON
flatness with a +2.7V supply. These devices typi-
cally consume only 0.02µA of quiescent current, mak-
ing them suitable for use in low-power, portable
applications. The MAX4706/MAX4707 feature low-leak-
age currents over the entire temperature range,
TTL/CMOS-compatible digital logic, and excellent AC
characteristics.
The MAX4706/MAX4707 are offered in small 5-pin and
6-pin SC70 and 6-pin µDFN packages.
Features
♦
Guaranteed R
ON
2Ω max (+2.7V Supply)
♦
Guaranteed R
ON
Flatness: 0.6Ω (+2.7V Supply)
♦
Excellent AC Characteristics
High Off-Isolation: -67dB at 1MHz
-3dB Bandwidth: 190MHz
♦
0.013% Total Harmonic Distortion
♦
Low Supply Current: 0.02µA
♦
Tiny SC70 and µDFN Packages
♦
1.8V to 5.5V Single-Supply Operation
MAX4706/MAX4707
Ordering Information
PART
MAX4706EXK-T
MAX4706EXT-T
MAX4706ELT-T*
MAX4707EXK-T
MAX4707EXT-T
MAX4707ELT-T*
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-
PACKAGE
5 SC70-5
6 SC70-6
6 µDFN-6
5 SC70-5
6 SC70-6
6 µDFN-6
TOP
MARK
AFO
ABS
—
AFP
ABT
—
Applications
Battery-Operated Equipment
Audio Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
Relay Replacement
*Future
product—contact factory for availability.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
COM
1
5
V+
COM
1
5
V+
COM
1
6
V+
COM
1
6
V+
NC
2
NO
2
NC
2
5
N.C.
NO
2
5
N.C.
GND
3
MAX4706
4
IN
GND
3
MAX4707
4
IN
GND
3
MAX4706
4
IN
GND
3
MAX4707
4
IN
SC70-5
PIN 5
5
XYZ
4
NOTE: SC70-5
PACKAGE
HAS LETTERING
NEAREST PIN 5.
2
3
SC70-5
PIN 6
6
XYZ
5
4
SC70-6
SC70-6
N.C. = NOT INTERNALLY CONNECTED.
NOTE: SC70-6
PACKAGE
HAS LETTERING
NEAREST PIN 6.
2
3
INPUT
0
1
SWITCH STATE
MAX4706
ON
OFF
MAX4707
OFF
ON
1
1
Pin Configurations/Functional Diagrams/Truth Tables continued at end of data sheet.
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.
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
MAX4706/MAX4707
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to ground.)
V+, IN .......................................................................-0.3V to +6V
COM, NO, NC (Note 1).................................-0.3V to (V+ + 0.3V)
Continuous Current (IN, V+, GND) ...................................±30mA
Continuous Current COM, NO, NC .................................±160mA
Peak Current COM, NO, NC
(pulsed at 1ms, 10% duty cycle) ................................±300mA
C)
Continuous Power Dissipation (T
A
= +70º
5-Pin SC70 (derate 3.1mW/º above +70º ..............247mW
C
C)
6-Pin SC70 (derate 3.1mW/º above +70º ..............245mW
C
C)
6-Pin µDFN (derate 2.1mW/º above +70°C)...........167.7mW
C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Junction Temperature ......................................................+150°C
Note 1:
Signals on NO, NC, COM, or IN exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to maxi-
mum current rating.
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
(V+ = 2.7V to 3.6V, V
IH
= 2.0V, V
IL
= 0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
ANALOG SWITCH
Analog Signal Range
On-Resistance
On-Resistance Flatness
(Note 3)
NO, NC Off-Leakage
Current
COM On-Leakage Current
COM Off-Leakage Current
DIGITAL INPUTS
Input Logic High
Input Logic Low
Input Current
DYNAMIC
Turn-On Time (Note 4)
Turn-Off Time (Note 4)
Charge Injection
NO, NC Off-Capacitance
Switch On-Capacitance
t
ON
t
OFF
Q
C
NO(OFF)
,
C
NC(OFF)
C
ON
V
COM
= 2V, R
L
= 300Ω,
C
L
= 35pF, Figure 2
V
COM
= 2V, R
L
= 300Ω,
C
L
= 35pF, Figure 2
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
5
17
35
8
12
20
20
15
15
ns
ns
pC
pF
pF
V
IH
V
IL
I
IN
V
IN
= 0V or V+
-1
0.05
2.0
0.4
+1
V
V
µA
V
COM
,
V
NO,
V
NC
R
ON
R
FLAT (ON)
I
NO(OFF),
I
NC(OFF)
I
COM(ON)
I
COM(OFF)
V+ = 2.7V, I
COM
= 10mA,
V
NO
or V
NC
= 0V to V+
V+ = 2.7V, I
COM
= 10mA,
V
NO
or V
NC
= 0V to V+
V+ = 3.3V, V
COM
= 1V, 3V;
V
NO
or V
NC
= 3V, 1V
V+ = 3.3V, V
COM
= 1V or 3V;
V
NO
or V
NC
= 1V, 3V, or floating
V+ = 3.3V, V
COM
= 1V or 3V;
V
NO
or V
NC
= 3V, 1V
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
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
-1
-2
-1
-2
-1
-2
0.1
0.1
0.1
0.6
0
2.0
V+
3.0
3.5
0.85
0.97
+1
+2
+1
+2
+1
+2
V
Ω
Ω
nA
nA
nA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
GEN
= 0V, R
GEN
= 0, C
L
= 1.0nF, Figure 3
V
NO
, V
NC
= GND, f = 1MHz, Figure 5
V
COM
= V
NO/NC
, f = 1MHz, Figure 5
2
_______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 2.7V to 3.6V, V
IH
= 2.0V, V
IL
= 0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
Off-Isolation (Note 5)
On-Channel Bandwidth
-3dB
Total Harmonic Distortion
SUPPLY
Positive Supply Current
I+
V+ = 5.5V, V
IN
= 0V or V+
T
A
= +25°C
T
A
= T
MIN
to T
MAX
0.02
1
µA
SYMBOL
V
ISO
BW
THD
CONDITIONS
V
NO
= V
NC
= 1V
RMS,
R
L
= 50Ω, C
L
= 5pF, Figure 4
R
L
= 50Ω, C
L
= 5pF, Figure 4
R
L
= 600Ω, 2V
P-P
, f = 20Hz to 20kHz
T
A
= +25°C
f = 10MHz
f = 1MHz
MIN
TYP
-62
-82
190
0.013
MAX
UNITS
dB
MHz
%
MAX4706/MAX4707
Note 2:
SC70 and µDFN packaged parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by
design and correlation.
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 ranges.
Note 4:
Guaranteed by design.
Note 5:
Off-isolation = 20log10 (VO / VI), where VO is V
COM
and VI is either V
NC
or V
NO
from the network analyzer.
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. V
COM
MAX4706 toc01
ON-RESISTANCE vs. V
COM
MAX4706 toc02
ON-RESISTANCE vs. V
COM
V+ = 3V
2.0
ON-RESISTANCE (Ω)
MAX4706 toc03
7
6
ON-RESISTANCE (Ω)
5
4
V+ = 2.5V
3
2
1
0
0
1
2
V+ = 5V
3
V
COM
(V)
4
5
6
V+ = 3V
V+ = 4.5V
V+ = 1.8V
1.6
V+ = 5V
1.4
ON-RESISTANCE (Ω)
1.2
1.0
0.8
0.6
0.4
0.2
0
0
1
2
3
V
COM
(V)
4
5
6
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
2.5
1.5
1.0
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
0.5
0
0
1
2
V
COM
(V)
3
4
_______________________________________________________________________________________
3
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
MAX4706/MAX4707
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
ON-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4706 toc04
OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4706 toc05
CHARGE INJECTION vs. V
COM
40
CHARGE INJECTION (pC)
35
30
25
20
3V
15
10
5
5V
MAX4607 toc06
1.00
1.00
45
V+ = 5V
OFF-LEAKAGE CURRENT (nA)
ON-LEAKAGE CURRENT (nA)
0.10
V+ = 3V
0.10
V+ = 5V
V+ = 3V
0.01
-40
-15
10
35
60
85
TEMPERATURE (°C)
0.01
-40
-15
10
35
60
85
TEMPERATURE (°C)
0
0
1
2
3
V
C0M
(V)
4
5
6
SUPPLY CURRENT vs. TEMPERATURE
MAX4706 toc07
t
ON
/t
OFF
vs. SUPPLY VOLTAGE
MAX4706 toc08
t
ON
/t
OFF
vs. TEMPERATURE
V+ = 5V
10
8
6
4
t
OFF
t
ON
MAX4706 toc09
3.00
2.50
SUPPLY CURRENT (nA)
2.00
1.50
1.00
V+ = 3V
0.50
0
-0.50
-50
0
50
V
IN
= V+;
ALL OTHER SWITCH
TERMINALS ARE
FLOATING
V+ = 5V
35
30
25
t
ON
/t
OFF
(ns)
20
t
ON
15
10
t
OFF
5
0
12
t
ON
/t
OFF
(ns)
2
0
0
1
2
3
4
5
6
-40
-15
10
35
60
85
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
100
TEMPERATURE (°C)
t
ON
/t
OFF
vs. TEMPERATURE
MAX4706 toc10
ON-LOSS BANDWIDTH
V+ = 5V
V+ = 3V
MAX4706 toc11
18
V+ = 3V
16
14
t
ON
/t
OFF
(ns)
12
10
8
6
4
2
0
-40
-15
10
35
60
t
OFF
t
ON
0
-1
-2
RESPONSE (dB)
-3
-4
-5
-6
50Ω IN AND OUT
-7
85
0.01
0.1
1
10
100
1000
TEMPERATURE (°C)
FREQUENCY (MHz)
4
_______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
MAX4706/MAX4707
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX4706 toc12
OFF-ISOLATION
0
-10
-20
RESPONSE (dB)
-30
-40
-50
-60
-70
-80
50Ω IN AND OUT
-90
0.1
1
10
FREQUENCY (MHz)
100
1000
V+ = 5V
THD (%)
V+ = 3V
0.020
0.018
0.016
0.014
0.012
0.010
0.008
0.006
0.004
0.002
0
V+ = 3V, V
GEN
= 3V
P-P
V+ = 3V, V
GEN
= 2V
P-P
V+ = 5V, V
GEN
= 5V
P-P
V+ = 5V, V
GEN
= 3V
P-P
INPUT IMPEDANCE = 600Ω
f = 20Hz TO 20kHz
0.01
0.1
1
FREQUENCY (kHz)
10
100
Pin Description
PIN
MAX4706
SC70-5
1
2
3
4
5
—
—
SC70-6
1
2
3
4
6
—
5
µDFN-6
6
2
1
3
4
—
5
SC70-5
1
—
3
4
5
2
—
MAX4707
SC70-6
1
—
3
4
6
2
5
µDFN-6
6
—
1
3
4
2
5
COM
NC
GND
IN
V+
NO
N.C.
Analog Switch Common Terminal
Analog Switch Normally Closed Terminal
Ground
Logic Input Control
Positive Supply Voltage
Analog Switch Normally Open Terminal
No Connection. Not internally connected.
NAME
FUNCTION
_______________________________________________________________________________________
MAX4706 toc13
5
微控制器 MCU
