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19-3159; Rev 0; 1/04
Low-Voltage, 2, SPST, CMOS Analog Switches
General Description
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 2 on-resistance (R ON) and 0.6 RON flatness with a +2.7V supply. These devices typically consume only 0.02A 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 DFN packages.
Features
Guaranteed RON 2 max (+2.7V Supply) Guaranteed RON Flatness: 0.6 (+2.7V Supply) Excellent AC Characteristics High Off-Isolation: -67dB at 1MHz -3dB Bandwidth: 190MHz 0.013% Total Harmonic Distortion Low Supply Current: 0.02A Tiny SC70 and DFN 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 -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PINPACKAGE 5 SC70-5 6 SC70-6 6 DFN-6 5 SC70-5 6 SC70-6 6 DFN-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
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Low-Voltage, 2, 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 (TA = +70 5-Pin SC70 (derate 3.1mW/ above +70 ..............247mW C C) 6-Pin SC70 (derate 3.1mW/ above +70 ..............245mW C C) 6-Pin DFN (derate 2.1mW/ above +70C)...........167.7mW C Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C Junction Temperature ......................................................+150C 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 = +25C.) (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 tON tOFF Q CNO(OFF), CNC(OFF) CON VCOM = 2V, RL = 300, CL = 35pF, Figure 2 VCOM = 2V, RL = 300, CL = 35pF, Figure 2 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 5 17 35 8 12 20 20 15 15 ns ns pC pF pF VIH VIL IIN VIN = 0V or V+ -1 0.05 2.0 0.4 +1 V V A VCOM, VNO, VNC RON RFLAT (ON) INO(OFF), INC(OFF) ICOM(ON) ICOM(OFF) V+ = 2.7V, ICOM = 10mA, VNO or VNC = 0V to V+ V+ = 2.7V, ICOM = 10mA, VNO or VNC = 0V to V+ V+ = 3.3V, VCOM = 1V, 3V; VNO or VNC = 3V, 1V V+ = 3.3V, VCOM = 1V or 3V; VNO or VNC = 1V, 3V, or floating V+ = 3.3V, VCOM = 1V or 3V; VNO or VNC = 3V, 1V TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX -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 nA nA nA SYMBOL CONDITIONS MIN TYP MAX UNITS
VGEN = 0V, RGEN = 0, CL = 1.0nF, Figure 3 VNO, VNC = GND, f = 1MHz, Figure 5 VCOM = VNO/NC, f = 1MHz, Figure 5
2
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Low-Voltage, 2, SPST, CMOS Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 2.7V to 3.6V, VIH = 2.0V, VIL = 0.4V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2)
PARAMETER Off-Isolation (Note 5) On-Channel Bandwidth -3dB Total Harmonic Distortion SUPPLY Positive Supply Current I+ V+ = 5.5V, VIN = 0V or V+ TA = +25C TA = TMIN to TMAX 0.02 1 A SYMBOL VISO BW THD CONDITIONS VNO = VNC = 1VRMS, RL = 50, CL = 5pF, Figure 4 RL = 50, CL = 5pF, Figure 4 RL = 600, 2VP-P, f = 20Hz to 20kHz TA = +25C f = 10MHz f = 1MHz MIN TYP -62 -82 190 0.013 MAX UNITS dB MHz %
MAX4706/MAX4707
Note 2: SC70 and DFN packaged parts are 100% tested at +25C. 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 = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM
MAX4706 toc01
ON-RESISTANCE vs. VCOM
MAX4706 toc02
ON-RESISTANCE vs. VCOM
V+ = 3V 2.0 ON-RESISTANCE ()
MAX4706 toc03
7 6 ON-RESISTANCE () 5 4 V+ = 2.5V 3 2 1 0 0 1 2 V+ = 5V 3 VCOM (V) 4 5 6 V+ = 3V V+ = 4.5V V+ = 1.8V
1.6 V+ = 5V 1.4 ON-RESISTANCE () 1.2 1.0 0.8 0.6 0.4 0.2 0 0 1 2 3 VCOM (V) 4 5 6 TA = +85C TA = +25C TA = -40C
2.5
1.5
1.0
TA = +85C TA = +25C TA = -40C
0.5
0 0 1 2 VCOM (V) 3 4
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3
Low-Voltage, 2, SPST, CMOS Analog Switches MAX4706/MAX4707
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.)
ON-LEAKAGE CURRENT vs. TEMPERATURE
MAX4706 toc04
OFF-LEAKAGE CURRENT vs. TEMPERATURE
MAX4706 toc05
CHARGE INJECTION vs. VCOM
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 VC0M (V) 4 5 6
SUPPLY CURRENT vs. TEMPERATURE
MAX4706 toc07
tON/tOFF vs. SUPPLY VOLTAGE
MAX4706 toc08
tON/tOFF vs. TEMPERATURE
V+ = 5V 10 8 6 4 tOFF tON
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 VIN = V+; ALL OTHER SWITCH TERMINALS ARE FLOATING V+ = 5V
35 30 25 tON/tOFF (ns) 20 tON 15 10 tOFF 5 0
12
tON/tOFF (ns)
2 0 0 1 2 3 4 5 6 -40 -15 10 35 60 85 SUPPLY VOLTAGE (V) TEMPERATURE (C)
100
TEMPERATURE (C)
tON/tOFF vs. TEMPERATURE
MAX4706 toc10
ON-LOSS BANDWIDTH
V+ = 5V V+ = 3V
MAX4706 toc11
18 V+ = 3V 16 14 tON/tOFF (ns) 12 10 8 6 4 2 0 -40 -15 10 35 60 tOFF tON
0 -1 -2 RESPONSE (dB) -3 -4 -5 -6
50 IN AND OUT -7 85 0.01 0.1 1 10 100 1000 TEMPERATURE (C) FREQUENCY (MHz)
4
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Low-Voltage, 2, SPST, CMOS Analog Switches MAX4706/MAX4707
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION vs. FREQUENCY
MAX4706 toc12
OFF-ISOLATION
0 -10 -20 RESPONSE (dB) -30 -40 -50 -60 -70 -80 50 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, VGEN = 3VP-P V+ = 3V, VGEN = 2VP-P
V+ = 5V, VGEN = 5VP-P
V+ = 5V, VGEN = 3VP-P INPUT IMPEDANCE = 600 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 DFN-6 6 2 1 3 4 -- 5 SC70-5 1 -- 3 4 5 2 -- MAX4707 SC70-6 1 -- 3 4 6 2 5 DFN-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
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MAX4706 toc13
5
Low-Voltage, 2, SPST, CMOS Analog Switches MAX4706/MAX4707
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 3.5 on-resistance (RON) and 0.9 RON flatness with a +2.7V supply. These devices typically consume only 0.02A 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 DFN packages.
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.
POSITIVE SUPPLY D1 V+
MAX4706 MAX4707
COM Vg
N0
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. 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
SWITCH INPUT V COM COM
V+ NO OR NC RL IN
SWITCH OUTPUT VOUT CL
LOGIC INPUT
V+ 0V
50%
t r < 5ns t f < 5ns
t OFF VOUT SWITCH OUTPUT 0V t ON LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE.
LOGIC INPUT
GND
0.9 x V0UT
0.9 x V0UT
CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VCOM RL + RON
(
)
Figure 2. Switching Time
6
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Low-Voltage, 2, SPST, CMOS Analog Switches MAX4706/MAX4707
MAX4706 MAX4707
SWITCH INPUT V GEN GND IN RGEN COM V+ V+ NO OR NC CL V+ IN 0V LOGIC INPUT (0 TO V+) OFF ON Q = (V OUT )(C L ) SWITCH OUTPUT VOUT VOUT VOUT
OFF
Figure 3. Charge Injection
V+ 0.1F NETWORK ANALYZER 50 50
V+
NO OR NC 50
VIN
VREF
MAX4706 MAX4707
V+ IN GND
VMEAS COM MEAS REF
50
50
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.
V OFF-ISOLATION = 20log MEAS VREF V ON-LOSS = 20log MEAS VREF
Figure 4. Off-Isolation and On-Loss Bandwidth
Chip Information
V+ V+ NO OR NC
TRANSISTOR COUNT: 190 PROCESS: CMOS
f = 1MHz CAPACITANCE ANALYZER
AS REQUIRED
MAX4706 MAX4707
IN GND
COM
Figure 5. Channel Off/On-Capacitance _______________________________________________________________________________________ 7
Low-Voltage, 2, SPST, CMOS Analog Switches MAX4706/MAX4707
Pin Configurations/Functional Diagrams/Truth Tables (continued)
TOP VIEW
GND 1
MAX4706
6
COM
GND 1
MAX4707
6
COM
NC 2
5
N.C.
NO 2
5
N.C.
IN 3
4
V+
IN 3
4
V+
DFN-6
INPUT 0 1 SWITCH STATE MAX4706 ON OFF MAX4707 OFF ON
DFN-6
SWITCHES SHOWN FOR LOGIC 0 INPUT. N.C. = NOT INTERNALLY CONNECTED.
8
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Low-Voltage, 2, 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.)
SC70, 5L.EPS
MAX4706/MAX4707
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9
Low-Voltage, 2, SPST, CMOS Analog Switches 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.)
SC70, 6L.EPS
10
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Low-Voltage, 2, 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.)
6L UDFN.EPS
REV.
MAX4706/MAX4707
A
COMMON DIMENSIONS
PIN 1 INDEX AREA
E
D
A1
TOP VIEW
SIDE VIEW
A A1 D E L L1 L2 b e
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 --
6
e
5
4
b
L2 L
3 2 A A
PIN 1 0.075x45
b
L1
1
SECTION A-A
BOTTOM VIEW
PROPRIETARY INFORMATION TITLE:
APPROVAL
DOCUMENT CONTROL NO.
21-0147
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 (c) 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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