Maxim MAX4707EXT-T Low-voltage, 2ohm, spst, cmos analog switch Datasheet

19-3159; Rev 0; 1/04
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
Features
♦ Guaranteed RON
2Ω max (+2.7V Supply)
♦ Guaranteed RON 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
The MAX4706/MAX4707 single-pole/single-throw
(SPST) switches operate from a single 1.8V to 5.5V supply. 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
RON flatness with a +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 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.
Ordering Information
PART
TEMP RANGE
PINPACKAGE
Battery-Operated Equipment
MAX4706EXK-T
-40°C to +85°C
5 SC70-5
AFO
Audio Signal Routing
MAX4706EXT-T
-40°C to +85°C
6 SC70-6
ABS
MAX4706ELT-T*
-40°C to +85°C
6 µDFN-6
—
MAX4707EXK-T
-40°C to +85°C
5 SC70-5
AFP
MAX4707EXT-T
-40°C to +85°C
6 SC70-6
ABT
MAX4707ELT-T*
-40°C to +85°C
6 µDFN-6
—
Applications
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
Relay Replacement
TOP
MARK
*Future product—contact factory for availability.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
COM 1
5
V+
NC 2
5
V+
NO 2
4
GND 3
PIN 5
COM 1
IN
GND 3
4
IN
COM 1
6
V+
NC 2
5
N.C.
4
IN
GND 3
COM 1
6
V+
NO 2
5
N.C.
4
IN
GND 3
MAX4706
MAX4707
MAX4706
MAX4707
SC70-5
SC70-5
SC70-6
SC70-6
5
4
XYZ
1
PIN 6
NOTE: SC70-5
PACKAGE
HAS LETTERING
NEAREST PIN 5.
2
3
6
5
XYZ
1
N.C. = NOT INTERNALLY CONNECTED.
4
NOTE: SC70-6
PACKAGE
HAS LETTERING
NEAREST PIN 6.
2
3
Pin Configurations/Functional Diagrams/Truth Tables continued at end of data sheet.
INPUT
0
1
SWITCH STATE
MAX4706
ON
OFF
MAX4707
OFF
ON
SWITCHES SHOWN FOR LOGIC 0 INPUT.
________________________________________________________________ Maxim Integrated Products
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.
1
MAX4706/MAX4707
General Description
MAX4706/MAX4707
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
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
Continuous Power Dissipation (TA = +70ºC)
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
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.
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, VIH = 2.0V, VIL = 0.4V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
On-Resistance
On-Resistance Flatness
(Note 3)
VCOM,
VNO, VNC
0
RON
V+ = 2.7V, ICOM = 10mA,
VNO or VNC = 0V to V+
TA = +25°C
RFLAT (ON)
V+ = 2.7V, ICOM = 10mA,
VNO or VNC = 0V to V+
TA = +25°C
2.0
TA = TMIN to TMAX
3.0
3.5
0.6
TA = TMIN to TMAX
0.85
0.97
NO, NC Off-Leakage
Current
INO(OFF),
INC(OFF)
V+ = 3.3V, VCOM = 1V, 3V;
VNO or VNC = 3V, 1V
TA = +25°C
-1
TA = TMIN to TMAX
-2
COM On-Leakage Current
ICOM(ON)
V+ = 3.3V, VCOM = 1V or 3V;
VNO or VNC = 1V, 3V, or floating
TA = +25°C
-1
TA = TMIN to TMAX
-2
COM Off-Leakage Current
ICOM(OFF)
V+ = 3.3V, VCOM = 1V or 3V;
VNO or VNC = 3V, 1V
TA = +25°C
-1
TA = TMIN to TMAX
-2
0.1
+1
+2
0.1
+1
+2
0.1
+1
+2
Ω
Ω
nA
nA
nA
DIGITAL INPUTS
Input Logic High
VIH
Input Logic Low
VIL
2.0
Input Current
IIN
VIN = 0V or V+
Turn-On Time (Note 4)
tON
VCOM = 2V, RL = 300Ω,
CL = 35pF, Figure 2
TA = +25°C
Turn-Off Time (Note 4)
tOFF
VCOM = 2V, RL = 300Ω,
CL = 35pF, Figure 2
TA = +25°C
-1
V
0.4
V
0.05
+1
µA
12
20
DYNAMIC
Charge Injection
Q
TA = TMIN to TMAX
20
8
TA = TMIN to TMAX
15
15
ns
ns
VGEN = 0V, RGEN = 0, CL = 1.0nF, Figure 3
5
pC
NO, NC Off-Capacitance
CNO(OFF),
CNC(OFF)
VNO, VNC = GND, f = 1MHz, Figure 5
17
pF
Switch On-Capacitance
CON
VCOM = VNO/NC, f = 1MHz, Figure 5
35
pF
2
_______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
(V+ = 2.7V to 3.6V, VIH = 2.0V, VIL = 0.4V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
Off-Isolation (Note 5)
VISO
VNO = VNC = 1VRMS,
RL = 50Ω, CL = 5pF, Figure 4
On-Channel Bandwidth
-3dB
BW
RL = 50Ω, CL = 5pF, Figure 4
Total Harmonic Distortion
THD
RL = 600Ω, 2VP-P, f = 20Hz to 20kHz
MIN
TYP
f = 10MHz
-62
f = 1MHz
-82
TA = +25°C
MAX
UNITS
dB
190
MHz
0.013
%
SUPPLY
Positive Supply Current
I+
TA = +25°C
V+ = 5.5V, VIN = 0V or V+
0.02
TA = TMIN to TMAX
µA
1
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: RON 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 VCOM and VI is either VNC or VNO from the network analyzer.
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM
4
V+ = 2.5V
3
V+ = 3V
2
V+ = 4.5V
1.2
1.0
TA = +85°C
TA = +25°C
TA = -40°C
0.8
0.6
0.4
1
V+ = 3V
2.0
ON-RESISTANCE (Ω)
5
2.5
MAX4706 toc02
MAX4706 toc01
V+ = 1.8V
V+ = 5V
1.4
ON-RESISTANCE (Ω)
ON-RESISTANCE (Ω)
6
ON-RESISTANCE vs. VCOM
1.6
MAX4706 toc03
ON-RESISTANCE vs. VCOM
7
1.5
1.0
TA = +85°C
TA = +25°C
TA = -40°C
0.5
0.2
V+ = 5V
0
0
1
2
3
VCOM (V)
4
0
5
6
0
0
1
2
3
VCOM (V)
4
5
6
0
1
2
3
4
VCOM (V)
_______________________________________________________________________________________
3
MAX4706/MAX4707
ELECTRICAL CHARACTERISTICS (continued)
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
OFF-LEAKAGE CURRENT
vs. TEMPERATURE
0.10
V+ = 3V
MAX4706 toc05
45
V+ = 5V
0.10
40
CHARGE INJECTION (pC)
V+ = 5V
CHARGE INJECTION vs. VCOM
1.00
OFF-LEAKAGE CURRENT (nA)
MAX4706 toc04
ON-LEAKAGE CURRENT (nA)
1.00
V+ = 3V
MAX4607 toc06
ON-LEAKAGE CURRENT
vs. TEMPERATURE
35
5V
30
25
20
3V
15
10
5
0
0.01
-15
10
35
60
-15
-40
85
SUPPLY CURRENT vs. TEMPERATURE
1
0
85
2
1.00
30
20
tON
V+ = 5V
10
15
V+ = 3V
0.50
10
0
5
5
6
tON/tOFF vs. TEMPERATURE
25
1.50
4
12
MAX4706 toc08
V+ = 5V
3
VC0M (V)
tON/tOFF vs. SUPPLY VOLTAGE
tON/tOFF (ns)
2.00
60
35
MAX4706 toc07
3.00
VIN = V+;
ALL OTHER SWITCH
TERMINALS ARE
FLOATING
35
TEMPERATURE (°C)
TEMPERATURE (°C)
2.50
10
tON/tOFF (ns)
-40
MAX4706 toc09
0.01
SUPPLY CURRENT (nA)
tON
8
tOFF
6
4
tOFF
2
0
0
-50
0
50
100
0
1
TEMPERATURE (°C)
2
3
4
-40
6
5
-15
tON/tOFF vs. TEMPERATURE
V+ = 3V
16
tON
14
35
ON-LOSS BANDWIDTH
0
MAX4706 toc10
18
10
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
V+ = 5V
-1
V+ = 3V
MAX4706 toc11
-0.50
-2
12
RESPONSE (dB)
tON/tOFF (ns)
MAX4706/MAX4707
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
10
tOFF
8
6
-3
-4
-5
4
-6
2
50Ω IN AND OUT
0
-7
-40
-15
10
35
TEMPERATURE (°C)
4
60
85
0.01
0.1
1
10
100
FREQUENCY (MHz)
_______________________________________________________________________________________
1000
60
85
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
OFF-ISOLATION
V+ = 3V, VGEN = 3VP-P
0.016
V+ = 3V, VGEN = 2VP-P
0.014
-30
THD (%)
RESPONSE (dB)
0.018
V+ = 5V
-40
-50
MAX4706 toc13
V+ = 3V
-20
0.020
MAX4706 toc12
0
-10
0.012
V+ = 5V, VGEN = 5VP-P
0.010
0.008
-60
V+ = 5V, VGEN = 3VP-P
0.006
-70
0.004
-80
0.002
50Ω IN AND OUT
-90
0
1
0.1
10
100
1000
INPUT IMPEDANCE = 600Ω
f = 20Hz TO 20kHz
0.01
FREQUENCY (MHz)
0.1
1
10
100
FREQUENCY (kHz)
Pin Description
PIN
MAX4706
NAME
MAX4707
FUNCTION
SC70-5
SC70-6
µDFN-6
SC70-5
SC70-6
1
1
6
1
1
µDFN-6
6
COM
2
2
2
—
—
—
NC
3
3
1
3
3
1
GND
4
4
3
4
4
3
IN
Logic Input Control
5
6
4
5
6
4
V+
Positive Supply Voltage
—
—
—
2
2
2
NO
Analog Switch Normally Open Terminal
—
5
5
—
5
5
N.C.
No Connection. Not internally connected.
Analog Switch Common Terminal
Analog Switch Normally Closed Terminal
Ground
_______________________________________________________________________________________
5
MAX4706/MAX4707
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
MAX4706/MAX4707
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
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
3.5Ω on-resistance (RON) and 0.9Ω RON flatness with a
+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
POSITIVE SUPPLY
MAX4706
MAX4707
D1
V+
Applications Information
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
supplies. For example, the switch accepts a 1VP-P input
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.
Power-Supply Sequencing and
Overvoltage Protection
N0
COM
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.
Caution: Do not exceed the absolute maximum
ratings because stresses beyond the listed ratings
may cause permanent damage to the device.
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.
Vg
GND
D2
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
V+
MAX4706
MAX4707
SWITCH
INPUT
V COM
SWITCH
OUTPUT
V+
NO
OR NC
COM
VOUT
RL
LOGIC
INPUT
V+
t r < 5ns
t f < 5ns
50%
0V
CL
t OFF
IN
LOGIC
INPUT
VOUT
GND
SWITCH
OUTPUT
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
RL
VOUT = VCOM
RL + RON
(
)
0.9 x V0UT
0V
t ON
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
Figure 2. Switching Time
6
0.9 x V0UT
_______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
SWITCH
INPUT
RGEN
MAX4706/MAX4707
V+
MAX4706
MAX4707
∆VOUT
V+
COM
NO
SWITCH
OUTPUT
VOUT
VOUT
OR NC
CL
V GEN
GND
IN
V+
ON
OFF
IN 0V
OFF
Q = (∆V OUT )(C L )
LOGIC INPUT (0 TO V+)
Figure 3. Charge Injection
V+ 0.1µF
V+
MAX4706
MAX4707
V+
VIN
NO
OR
NC
NETWORK
ANALYZER
50Ω
50Ω
VREF
50Ω
VMEAS
COM
IN
MEAS
50Ω
GND
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.
REF
50Ω
V
OFF-ISOLATION = 20log MEAS
VREF
V
ON-LOSS = 20log MEAS
VREF
Figure 4. Off-Isolation and On-Loss Bandwidth
Chip Information
V+
V+
AS
REQUIRED
MAX4706
MAX4707
IN
TRANSISTOR COUNT: 190
NO
OR
NC
PROCESS: CMOS
f = 1MHz
CAPACITANCE
ANALYZER
COM
GND
Figure 5. Channel Off/On-Capacitance
_______________________________________________________________________________________
7
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
MAX4706/MAX4707
Pin Configurations/Functional Diagrams/Truth Tables (continued)
TOP VIEW
MAX4706
6
COM
GND 1
NC 2
5
N.C.
IN 3
4
V+
GND 1
MAX4707
6
COM
NO 2
5
N.C.
IN 3
4
V+
µDFN-6
µDFN-6
INPUT
0
1
SWITCH STATE
MAX4706
ON
OFF
MAX4707
OFF
ON
SWITCHES SHOWN FOR LOGIC 0 INPUT.
N.C. = NOT INTERNALLY CONNECTED.
8
_______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
SC70, 5L.EPS
_______________________________________________________________________________________
9
MAX4706/MAX4707
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.)
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.)
SC70, 6L.EPS
MAX4706/MAX4707
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
10
______________________________________________________________________________________
Low-Voltage, 2Ω, SPST,
CMOS Analog Switches
6L UDFN.EPS
A
COMMON DIMENSIONS
PIN 1
INDEX AREA
A
A1
D
E
L
L1
L2
b
e
E
A1
D
TOP VIEW
6
e
5
SIDE VIEW
4
L2
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
--
b
PIN 1
0.075x45∞
b
L
3
L1
2
A
1
SECTION A-A
A
BOTTOM VIEW
PROPRIETARY INFORMATION
TITLE:
APPROVAL
DOCUMENT CONTROL NO.
21-0147
REV.
B
1
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.
MAX4706/MAX4707
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.)