MAX4706 [MAXIM]
Low-Voltage, 2ohm, SPST, CMOS Analog Switches; 低电压， 2ohm ， SPST ， CMOS模拟开关
| 型号： | MAX4706 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Low-Voltage, 2ohm, SPST, CMOS Analog Switches |
| 文件： | 总11页 (文件大小：375K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-3159; Rev 0; 1/04
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
General Description
Features
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
♦ Guaranteed R
ON
2Ω max (+2.7V Supply)
♦ Guaranteed R
Flatness: 0.6Ω (+2.7V Supply)
ON
♦ Excellent AC Characteristics
High Off-Isolation: -67dB at 1MHz
-3dB Bandwidth: 190MHz
♦ 0.013% Total Harmonic Distortion
♦ Low Supply Current: 0.02µA
switches provide 2Ω on-resistance (R ) and 0.6Ω
ON
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.
♦ Tiny SC70 and µDFN Packages
♦ 1.8V to 5.5V Single-Supply Operation
The MAX4706/MAX4707 are offered in small 5-pin and
6-pin SC70 and 6-pin µDFN packages.
Ordering Information
PIN-
PACKAGE
TOP
MARK
PART
TEMP RANGE
Applications
MAX4706EXK-T
-40°C to +85°C
-40°C to +85°C
5 SC70-5
6 SC70-6
6 µDFN-6
5 SC70-5
6 SC70-6
6 µDFN-6
AFO
ABS
—
Battery-Operated Equipment
MAX4706EXT-T
Audio Signal Routing
MAX4706ELT-T* -40°C to +85°C
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
Relay Replacement
MAX4707EXK-T
-40°C to +85°C
-40°C to +85°C
AFP
ABT
—
MAX4707EXT-T
MAX4707ELT-T* -40°C to +85°C
*Future product—contact factory for availability.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
COM
1
2
3
5
4
V+
IN
COM
NO
1
2
3
5
4
V+
IN
COM
NC
1
2
3
6
V+
COM
NO
1
2
3
6
V+
NC
5
4
N.C.
IN
5
4
N.C.
IN
GND
GND
GND
GND
MAX4706
MAX4707
MAX4706
MAX4707
SC70-5
SC70-5
SC70-6
SC70-6
PIN 5
PIN 6
N.C. = NOT INTERNALLY CONNECTED.
5
4
6
5
4
XYZ
XYZ
NOTE: SC70-5
PACKAGE
NOTE: SC70-6
PACKAGE
SWITCH STATE
INPUT
HAS LETTERING
NEAREST PIN 5.
HAS LETTERING
NEAREST PIN 6.
MAX4706
ON
MAX4707
OFF
0
1
1
2
3
1
2
3
OFF
ON
SWITCHES SHOWN FOR LOGIC 0 INPUT.
Pin Configurations/Functional Diagrams/Truth Tables continued at end of data sheet.
________________________________________________________________ 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
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to ground.)
Continuous Power Dissipation (T = +70ºC)
A
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
5-Pin SC70 (derate 3.1mW/ºC above +70ºC) ..............247mW
6-Pin SC70 (derate 3.1mW/ºC above +70ºC) ..............245mW
6-Pin µDFN (derate 2.1mW/ºC above +70°C)...........167.7mW
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
(pulsed at 1ms, 10% duty cycle) ................................±300mA
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 = 2.0V, V = 0.4V, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 2)
MAX A
IH
IL
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
ANALOG SWITCH
V
,
COM
V
Analog Signal Range
0
V+
V
V
NO, NC
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
= +25°C
2.0
0.6
0.1
0.1
0.1
3.0
3.5
0.85
0.97
+1
V+ = 2.7V, I
= 10mA,
= 0V to V+
COM
On-Resistance
R
Ω
ON
V
or V
NO
NC
= T
to T
MIN
MAX
MAX
MAX
MAX
MAX
= +25°C
= T to T
On-Resistance Flatness
(Note 3)
V+ = 2.7V, I
= 10mA,
COM
R
I
Ω
FLAT (ON)
V
or V
= 0V to V+
NC
NO
MIN
= +25°C
= T to T
-1
-2
-1
-2
-1
-2
NO, NC Off-Leakage
Current
V+ = 3.3V, V
= 1V, 3V;
COM
NO(OFF),
nA
nA
nA
I
V
or V
= 3V, 1V
NC
NC(OFF)
NO
+2
MIN
= +25°C
= T to T
+1
V+ = 3.3V, V
= 1V or 3V;
COM
COM On-Leakage Current
COM Off-Leakage Current
I
COM(ON)
V
or V = 1V, 3V, or floating
NC
NO
+2
MIN
= +25°C
= T to T
+1
V+ = 3.3V, V
= 1V or 3V;
COM
I
COM(OFF)
V
or V = 3V, 1V
NC
NO
+2
MIN
DIGITAL INPUTS
Input Logic High
Input Logic Low
Input Current
V
2.0
-1
V
V
IH
V
0.4
+1
IL
I
V
V
= 0V or V+
0.05
12
8
µA
IN
IN
DYNAMIC
T
T
T
T
= +25°C
20
20
15
15
A
A
A
A
= 2V, R = 300Ω,
COM
L
Turn-On Time (Note 4)
t
ns
ON
C = 35pF, Figure 2
L
= T
to T
MIN
MAX
MAX
= +25°C
= T to T
V
= 2V, R = 300Ω,
L
COM
Turn-Off Time (Note 4)
Charge Injection
t
ns
pC
pF
pF
OFF
Q
C = 35pF, Figure 2
L
MIN
V
V
V
= 0V, R
= 0, C = 1.0nF, Figure 3
5
GEN
GEN
L
C
C
,
NO(OFF)
NO, NC Off-Capacitance
Switch On-Capacitance
, V = GND, f = 1MHz, Figure 5
NO NC
17
35
NC(OFF)
C
= V
, f = 1MHz, Figure 5
NO/NC
ON
COM
2
_______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 2.7V to 3.6V, V = 2.0V, V = 0.4V, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 2)
MAX A
IH
IL
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
-62
MAX UNITS
f = 10MHz
f = 1MHz
V
= V
= 1V
NC RMS,
R = 50Ω, C = 5pF, Figure 4
NO
Off-Isolation (Note 5)
V
dB
ISO
L
L
-82
On-Channel Bandwidth
-3dB
BW
R = 50Ω, C = 5pF, Figure 4
190
MHz
%
L
L
Total Harmonic Distortion
THD
R = 600Ω, 2V , f = 20Hz to 20kHz
T = +25°C
A
0.013
L
P-P
SUPPLY
T
T
= +25°C
0.02
A
Positive Supply Current
I+
V+ = 5.5V, V = 0V or V+
µA
1
IN
= T
to T
MAX
A
MIN
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
flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
ON
specified analog signal ranges.
Note 4: Guaranteed by design.
Note 5: Off-isolation = 20log10 (VO / VI), where VO is V
and VI is either V
or V
from the network analyzer.
NO
COM
NC
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
ON-RESISTANCE vs. V
ON-RESISTANCE vs. V
ON-RESISTANCE vs. V
COM
COM
COM
7
6
5
4
3
2
1
0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2.5
2.0
1.5
1.0
0.5
0
V+ = 5V
V+ = 3V
V+ = 1.8V
T
T
T
= +85°C
= +25°C
= -40°C
A
A
A
V+ = 2.5V
V+ = 3V
T
T
T
= +85°C
= +25°C
= -40°C
A
A
A
V+ = 4.5V
V+ = 5V
0
1
2
3
4
5
6
0
1
2
3
4
5
6
0
1
2
3
4
V
COM
(V)
V
COM
(V)
V
COM
(V)
_______________________________________________________________________________________
3
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
OFF-LEAKAGE CURRENT
vs. TEMPERATURE
ON-LEAKAGE CURRENT
vs. TEMPERATURE
CHARGE INJECTION vs. V
COM
45
40
35
30
25
20
15
10
5
1.00
0.10
0.01
1.00
5V
V+ = 5V
V+ = 5V
0.10
3V
V+ = 3V
V+ = 3V
0
0.01
0
1
2
3
4
5
6
-40
-15
10
35
60
85
-40
-15
10
35
60
85
V
C0M
(V)
TEMPERATURE (°C)
TEMPERATURE (°C)
SUPPLY CURRENT vs. TEMPERATURE
t
/t
vs. TEMPERATURE
t
/t
vs. SUPPLY VOLTAGE
ON OFF
ON OFF
3.00
2.50
2.00
1.50
1.00
0.50
0
12
10
8
35
30
25
20
15
10
5
V
= V+;
V+ = 5V
IN
V+ = 5V
ALL OTHER SWITCH
TERMINALS ARE
FLOATING
t
ON
t
OFF
t
ON
6
V+ = 3V
4
t
OFF
2
-0.50
0
0
-50
0
50
100
-40
-15
10
35
60
85
0
1
2
3
4
5
6
TEMPERATURE (°C)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
t
/t
vs. TEMPERATURE
ON-LOSS BANDWIDTH
ON OFF
18
16
14
12
10
8
0
V+ = 5V
V+ = 3V
-1
-2
-3
-4
-5
-6
-7
t
ON
V+ = 3V
t
OFF
6
4
2
50Ω IN AND OUT
10 100 1000
0
-40
-15
10
35
60
85
0.01
0.1
1
TEMPERATURE (°C)
FREQUENCY (MHz)
4
_______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
TOTAL HARMONIC DISTORTION
OFF-ISOLATION
vs. FREQUENCY
0
0.020
0.018
-10
V+ = 3V, V
V+ = 3V, V
= 3V
= 2V
GEN
P-P
V+ = 3V
0.016
0.014
0.012
0.010
0.008
0.006
0.004
0.002
0
-20
GEN
P-P
-30
-40
-50
-60
-70
-80
V+ = 5V
V+ = 5V, V
V+ = 5V, V
= 5V
= 3V
GEN
P-P
GEN
P-P
INPUT IMPEDANCE = 600Ω
f = 20Hz TO 20kHz
50Ω IN AND OUT
100 1000
-90
0.1
1
10
0.01
0.1
1
10
100
FREQUENCY (MHz)
FREQUENCY (kHz)
Pin Description
PIN
NAME
FUNCTION
MAX4706
MAX4707
SC70-5
SC70-6
µDFN-6
SC70-5
SC70-6
µDFN-6
1
2
1
2
6
2
1
—
3
1
—
3
6
—
1
COM
NC
Analog Switch Common Terminal
Analog Switch Normally Closed Terminal
Ground
3
3
1
GND
IN
4
4
3
4
4
3
Logic Input Control
5
6
4
5
6
4
V+
Positive Supply Voltage
—
—
—
5
—
5
2
2
2
NO
Analog Switch Normally Open Terminal
No Connection. Not internally connected.
—
5
5
N.C.
_______________________________________________________________________________________
5
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
the entire temperature range, TTL/CMOS-compatible
digital logic, and excellent AC characteristics.
Detailed Description
The MAX4706/MAX4707 SPST switches operate from a
single supply ranging from 1.8V to 5.5V. The MAX4706
is a normally closed (NC) switch and the MAX4707 is
the normally open (NO) version. These switches provide
The MAX4706/MAX4707 are offered in small 5-pin and
6-pin SC70 and 6-pin µDFN packages.
Applications Information
3.5Ω on-resistance (R ) and 0.9Ω R
flatness with a
ON
ON
The MAX4706/MAX4707 operate from a single +1.8V to
+5.5V supply. The MAX4706/MAX4707 accept bipolar
input signals when V+ and GND are biased from bipolar
+2.7V supply. These devices typically consume only
0.02µA of quiescent current, making them suitable for
use in low-power, portable applications. The
MAX4706/MAX4707 feature low-leakage currents over
supplies. For example, the switch accepts a 1V
input
P-P
when V+ = 2V and GND = -2V. ESD-protection diodes
are internally connected between each analog switch
terminal and both V+ and GND. One of these diodes
conducts if any analog signal is greater than V+ or less
than GND (Figure 1). Virtually all analog leakage current
is attributed to the ESD diodes. Each diode is biased by
the analog signal and either V+ or GND. The ESD
diodes’ leakage currents vary as the signal changes.
POSITIVE SUPPLY
MAX4706
MAX4707
D1
V+
Power-Supply Sequencing and
Overvoltage Protection
Caution: Do not exceed the absolute maximum
ratings because stresses beyond the listed ratings
may cause permanent damage to the device.
COM
N0
V
g
Proper power-supply sequencing is recommended for
all CMOS devices. Always apply V+ before applying
analog signals, especially if the analog signal is not
current-limited.
GND
D2
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
V+
MAX4706
MAX4707
t < 5ns
t < 5ns
f
r
SWITCH
OUTPUT
V+
0V
LOGIC
INPUT
V+
50%
NO
COM
IN
SWITCH
INPUT
V
COM
V
OUT
OR NC
R
L
C
L
t
OFF
V
OUT
GND
LOGIC
INPUT
0.9 x V
0.9 x V
0UT
0UT
SWITCH
OUTPUT
0V
t
ON
C INCLUDES FIXTURE AND STRAY CAPACITANCE.
L
RL
R + R
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
V
OUT
= V
COM
(
)
L
ON
Figure 2. Switching Time
6
_______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
V+
V+
MAX4706
MAX4707
∆V
OUT
SWITCH
OUTPUT
SWITCH
INPUT
V
OUT
R
GEN
COM
NO
OR NC
V
OUT
C
L
V
GEN
GND
IN
V+
0V
ON
Q = (∆V )(C )
OFF
OFF
IN
OUT
L
LOGIC INPUT (0 TO V+)
Figure 3. Charge Injection
0.1µF
V+
V+
NETWORK
ANALYZER
V
V
IN
REF
50Ω
50Ω
NO
OR
NC
50Ω
MAX4706
MAX4707
V
MEAS
MEAS
REF
COM
V+
IN
50Ω
50Ω
GND
V
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.
MEAS
OFF-ISOLATION = 20log
ON-LOSS = 20log
REF
V
MEAS
V
REF
Figure 4. Off-Isolation and On-Loss Bandwidth
Chip Information
V+
TRANSISTOR COUNT: 190
PROCESS: CMOS
V+
NO
OR
NC
f = 1MHz
CAPACITANCE
ANALYZER
MAX4706
MAX4707
AS
REQUIRED
COM
IN
GND
Figure 5. Channel Off/On-Capacitance
_______________________________________________________________________________________
7
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
Pin Configurations/Functional Diagrams/Truth Tables (continued)
TOP VIEW
MAX4706
MAX4707
GND
NO
IN
1
2
3
6
5
4
COM
N.C.
V+
GND
NC
IN
1
2
3
6
5
4
COM
N.C.
V+
µDFN-6
µDFN-6
SWITCH STATE
MAX4706 MAX4707
ON OFF
OFF ON
INPUT
0
1
SWITCHES SHOWN FOR LOGIC 0 INPUT.
N.C. = NOT INTERNALLY CONNECTED.
8
_______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
_______________________________________________________________________________________
9
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
10 ______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
A
COMMON DIMENSIONS
MIN.
0.64
--
1.45
0.95
0.30
--
--
0.17
--
NOM.
0.72
0.20
1.50
1.00
0.35
--
--
0.20
0.50
MAX.
0.80
--
1.55
1.05
0.40
0.08
0.05
0.23
--
PIN 1
INDEX AREA
A
A1
D
E
L
L1
L2
b
E
A1
D
e
TOP VIEW
SIDE VIEW
e
b
5
6
4
b
PIN 1
0.075x45∞
L2
L
3
2
1
SECTION A-A
A
A
L1
BOTTOM VIEW
PROPRIETARY INFORMATION
TITLE:
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0147
B
1
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11
© 2004 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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