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19-2046; Rev 0; 4/01
High-Current, 25, SPDT, CMOS Analog Switches
General Description
The MAX4659/MAX4660 are medium voltage CMOS analog switches with a low on-resistance of 25 max specifically designed to handle large switch currents. With a switch capability of up to 200mA peak current and 150mA continuous current (MAX4660), and up to 150mA peak current and 75mA continuous current (MAX4659), these parts can switch loads as low as 50. They can replace reed relays with a million times the speed and a virtually unlimited number of lifetime cycles. Normal power consumption is only 3mW, whether the switch is on or off. These parts are TTL/CMOS compatible and will switch any voltage within their power-supply range. The devices are single-pole/double-throw (SPDT) switches. The MAX4659/MAX4660 contain one normally closed (NC) switch and one normally open (NO) switch. The MAX4659/MAX4660s' power-supply range is from 4.5V to 20V for dual-supply operation and +9V to +40V for single-supply operation. These switches can operate from any combination of supplies, within a 40V V+ to V- range. They conduct equally well in either direction and can handle Rail-to-Rail(R) analog signals. The off-leakage current is only 1nA max at TA = +25C. The MAX4659 is available in 8-pin MAX and SO packages. The MAX4660 is available in thermally enhanced exposed paddle MAX and SO packages.
Features
o High Continuous Current Handling 150mA Continuous Current (MAX4660) 75mA Continuous Current (MAX4659) o High Peak Current Handling 200mA Peak Current (MAX4660) 150mA Peak Current (MAX4659) o 25 max On-Resistance (15V Supplies) o VL Supply Not Required o 1.5 max RON Flatness (15V Supplies) o Rail-to-Rail Signal Handling o +12V Single Supply or 15V Dual-Supply Operation o Pin Compatible with DG419, MAX319
MAX4659/MAX4660
Ordering Information
PART MAX4659EUA MAX4659ESA MAX4660EUA MAX4660ESA TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 8 MAX 8 SO 8 MAX EP* 8 SO EP*
Applications
Relay Replacement Test Equipment Communication Systems xDSL Modems PBX, PABX Systems Audio Signal Routing Audio Systems PC Multimedia Boards Redundant/Backup Systems
* Exposed paddle
Pin Configuration
TOP VIEW
COM NC GND
1 2 3
8 7 6
NO VIN N.C.
V+ 4
MAX4659 MAX4660
MAX/SO
5
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
LOGIC 0 1
MAX4659/MAX4660 NC NO ON OFF OFF ON
SWITCH SHOWN FOR LOCIC "0" INPUT
________________________________________________________________ Maxim Integrated Products
1
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High-Current, 25, SPDT, CMOS Analog Switches MAX4659/MAX4660
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +44V V- to GND ...............................................................-44V to +0.3V V+ to V-...................................................................-0.3V to +44V All Other Pins to GND (Note 1) ............ (V- - 0.3V) to (V+ + 0.3V) Continuous Current COM, NO, NC (MAX4660)..............150mA Continuous Current COM, NO, NC (MAX4659)................75mA Continuous Current IN ......................................................30mA Peak Current COM, NO, NC MAX4660 (pulsed at 1ms, 10% duty cycle) ..............200mA MAX4659 (pulsed at 1ms, 10% duty cycle) ..............150mA Continuous Power Dissipation (TA = +70C) 8-Pin MAX-EP (derate 10.3mW/C above +70C) MAX4660.....................................................................825mW 8-Pin MAX (derate 4.50mW/C above +70C) MAX4659.....................................................................362mW 8-Pin SO-EP (derate 18.9mW/C above +70C) MAX4660...................................................................1509mW 8-Pin SO (derate 5.88mW/C above +70C) MAX4659.....................................................................471mW Operating Temperature Ranges MAX4659/MAX4660........................................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
Note 1: Signals on NO, NC, COM, or IN exceeding V+ or V- 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--Dual Supplies
(V+ = +15V, V- = -15V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 2, 6)
PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Matching Between Channels On-Resistance Flatness (Note 3) NO or NC Off-Leakage Current (Note 4) COM On-Leakage Current (Note 4) DYNAMIC CHARACTERISTICS Transition Time tTRANS VNO or VNC = 10V; RL = 300, CL = 35pF; Figure 3 VNO or VNC = 10V; RL = 300, CL = 35pF, Figure 3 +25C TMIN to TMAX +25C TMIN to TMAX 10 5 20 85 150 ns 200 ns VCOM, VNO, VNC RON RON RFLAT (ON) ICOM = 50mA; VNO or VNC = 10V ICOM = 50mA; VNO or VNC = 10V ICOM = 50mA; VNO or VNC = -5V, 0, +5V +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX -1 -10 -2 -20 0.02 0.01 0.5 0.4 V18 V+ 25 30 1.2 1.5 1.5 2 1 10 2 nA 20 V nA SYMBOL CONDITIONS TA MIN TYP MAX UNITS
INO(OFF) or VCOM = -14.5V, +14.5V; VNO INC(OFF) or VNC = +14.5V, -14.5V ICOM(ON) VCOM = +14.5V, -14.5V; VNO or VNC = +14.5V, -14.5V, or floating
Break-Before-Make Delay
tBBM
2
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High-Current, 25, SPDT, CMOS Analog Switches
ELECTRICAL CHARACTERISTICS--Dual Supplies (continued)
(V+ = +15V, V- = -15V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 2, 6)
PARAMETER Charge Injection -3dB Bandwidth Off-Isolation (Note 5) Total Harmonic Distortion Crosstalk NO or NC Off-Capacitance COM On-Capacitance DIGITAL I/O Input Logic High Input Logic Low Input Leakage Current POWER SUPPLY Power-Supply Range VIN = 0 or 5V, VN_ = 3V, ISWITCH = 100mA, MAX4660; ISWITCH = 50mA, MAX4659 VIN = 0 or 5V, VN_ = 3V, ISWITCH = 100mA, MAX4660; ISWITCH = 50mA, MAX4659 VIN = 0 or 5V, VN_ = 3V, ISWITCH = 100mA, MAX4660; ISWITCH = 50mA, MAX4659 TMIN to TMAX +25C 4.5 135 20 200 A TMIN to TMAX +25C 30 300 V VIH VIL IIN VIN = 0.8V or 2.4V TMIN to TMAX TMIN to TMAX TMIN to TMAX -1 2.4 0.8 1 V V A SYMBOL Q BW VISO THD VCROSS CNO(OFF), CNC(OFF) CCOM(ON) f = 1MHz, RL = 50, Figure 5 f = 20Hz to 20kHz, VN_ = 5Vp-p, RL = 600 RL = 50, CL = 5pF, f = 1MHz, Figure 6 f = 1MHz, Figure 7 f = 1MHz, Figure 8 CONDITIONS VGEN = 0, RGEN = 0, CL = 1nF, Figure 4 TA +25C +25C +25C +25C +25C +25C +25C MIN TYP 1.5 225 -70 0.005 -76 6 25 MAX UNITS pC MHz dB % dB pF pF
MAX4659/MAX4660
Positive Supply Current
I+
50 A
Negative Supply Current
I-
TMIN to TMAX +25C 100
75
175 A
Ground Current
IGND
TMIN to TMAX
225
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High-Current, 25, SPDT, CMOS Analog Switches MAX4659/MAX4660
ELECTRICAL CHARACTERISTICS--Single Supply
(V+ = +12V, V- = 0, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 2, 6)
PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Matching Between Channels On-Resistance Flatness (Note 3) DYNAMIC CHARACTERISTICS Transition Time tTRANS VNO or VNC = 10V; RL = 300; CL = 35pF, Figure 2 VNO or VNC = 10V; RL = 300 ; CL = 35pF, Figure 2 VGEN = 0, RGEN = 0, CL = 1nF, Figure 4 +25C TMIN to TMAX +25C TMIN to TMAX +25C 20 10 1 pC 50 ns 120 200 ns 250 SYMBOL VIN RON RON ICOM = 25mA; VNO or VNC = +10V ICOM = 25mA; VNO or VNC = 10V ICOM = 25mA; VNO or VNC = +2V, +6V, +10V CONDITIONS TA TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX 4 0.4 MIN 0 38 TYP MAX V+ 50 60 2 2.5 7 9 UNITS V
RFLAT (ON)
Break-Before-Make Delay
tBBM
Charge Injection POWER SUPPLY Power-Supply Range
Q
V+ VIN = 0 or 12V, VN_ = 3V; ISWITCH = 50mA, MAX4660; ISWITCH = 25mA, MAX4659 VIN = 5V, VN_ = 3V; ISWITCH = 50mA, MAX4660; ISWITCH = 25mA, MAX4659 +25C TMIN to TMAX +25C TMIN to TMAX
+9 50
+40 100 125 70 125 150
V
Positive Supply Current
I+
A
Note 2: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. Note 3: 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: Leakage parameters are 100% tested at maximum-rated hot temperature and guaranteed by correlation at TA = +25C. Note 5: Off-isolation = 20log10 [VCOM / (VNC or VNO)], VCOM = output, VNC or VNO = input to off switch. Note 6: -40C specifications are guaranteed by design.
4
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High-Current, 25, SPDT, CMOS Analog Switches
Typical Operating Characteristics
(TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM (DUAL SUPPLIES)
MAX4659/MAX4660 toc01
MAX4659/MAX4660
ON-RESISTANCE vs. VCOM (SINGLE SUPPLY)
MAX4659/MAX4660 toc02
ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES)
MAX4659/MAX4660 toc03
55 50 45 40 35 RON () 30 25 20 15 10 5 0 E D C B A
55 50 45 40 35 RON () 30 25 20 15 10 5 0 0 8 16 C B A
A: V+ = +9V, V- = 0 B: V+ = +12V, V- = 0 C: V+ = +24V, V- = 0 D: V+ = +36V, V- = 0 E: V+ = +40V, V- = 0
30
25 RON () TA = +85C 20 TA = +25C
D E 15 TA = -40C 10 24 32 40 -15 -10 -5 0 VCOM (V) 5 10 15 VCOM (V)
A: V+ = +4.5V, V- = -4.5V D: V+ = +15V, V- = -15V B: V+ = +10V, V- = -10V E: V+ = +20V, V- = -20V C: V+ = +12V, V- = -12V -20 -10 0 VCOM (V) 10 20
ON-RESISTANCE vs. VCOM AND TEMPERATURE (SINGLE SUPPLY)
MAX4659/MAX4660 toc04
LEAKAGE CURRENT vs. TEMPERATURE
MAX4659/MAX4660 toc05
CHARGE INJECTION vs. VCOM
A: V+ = 15V, V- = -15V B: V+ = 12V, V- = 0 60
MAX4659/MAX4660 toc06
50 45 40 RON () 35 30 25 20 0 2 4 6 VCOM (V) 8 10 TA = -40C
10,000 V+ = +15V V- = -15V 1000 OFF-LEAKAGE (pA) ICOM(ON) 100 ICOM(OFF) 10
90
TA = +85C
Q (pC)
30
A
B
TA = +25C
0
1
-30
0.1 12 -40 -15 10 35 60 85 TEMPERATURE (C)
-60 -15 -10 -5 0 VCOM (V) 5 10 15
SUPPLY CURRENT vs. SUPPLY VOLTAGE (SINGLE SUPPLY)
MAX4659/MAX4660 toc07
SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE
TOTAL HARMONIC DISTORTION (%) DUAL SUPPLIES VCOM = 3V, ISWITCH = 100mA, IN = GND
MAX4659/MAX4660 toc08
TOTAL HARMONIC DISTORTION vs. FREQUENCY
V+ = 15V V- = -15V 5VRMS SIGNAL 600 SOURCE AND BW = 80kHz
MAX4659/MAX4660 toc09
1500 V- = 0 1200 SUPPLY CURRENT (A)
200
1
160 SUPPLY CURRENT (A)
A B
0.1
900
120 A: I+, TA = -40C B: I+, TA = +25C C: I+, TA = +85C D: I-, TA = -40C E: I-, TA = +25C F: I-, TA = +85C
600
80
C
0.01
300
40
D F
E
0 0 5 10 15 20 25 30 35 40 SUPPLY VOLTAGE (V)
0 0 5 10 SUPPLY VOLTAGE (V)
0.0001 15 10 100 1k FREQUENCY (Hz) 10k 100k
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High-Current, 25, SPDT, CMOS Analog Switches MAX4659/MAX4660
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.)
FREQUENCY RESPONSE
MAX4659/MAX4660 toc10
LOGIC LEVEL THRESHOLD VOLTAGE vs. SUPPLY VOLTAGE
MAX4659/MAX4660 toc11
TRANSISTION TIME vs. SUPPLY VOLTAGE
RL = 200 CL = 35pF
MAX4659/MAX4660 toc12
0 -10 -20 -30 LOSS (dB) -40 -50 -60 -70 -80 -90 -100 -110 0.01 0.1 1 V+ = 15V, V- = -15V 10 100 ON-RESPONSE BW = 225MHz
3.0
300 250 TRANSITION TIME (ns) 200 150 100 50 0
2.6
OFF-ISOLATION CROSSTALK
VTH (V)
2.2
1.8
1.4
1.0 1000 5 10 15 20 25 30 35 40 V+ (V)
5
7
9
11
13
15
FREQUENCY (MHz)
V+, V- (V)
BREAK-BEFORE-MAKE DELAY vs. SUPPLY VOLTAGE
RL = 200 CL = 35pF
MAX4659/MAX4660 toc13
SUPPLY CURRENT vs. VOLTAGE ACROSS SWITCH
V+ = +15V, V- = -15V
MAX4659/MAX4660 toc14
60 BREAK-BEFORE-MAKE DELAY (ns) 50 40 30 20 10 0 5
3000 2500 2000 I + (A) 1500 1000 500 0
7
9
11
13
15
-10
-5
0 VCOM - VN_ (mV)
5
10
IV+, V- (V)
Pin Description
PIN 1 2 3 4 5 6 7 8 NAME COM NC GND V+ N.C. IN VNO Analog Switch Common Normally Closed Switch Terminal. NC is connected to COM when IN is low. Ground Positive Supply Voltage Input No Connection Digital Control Input Negative Supply Voltage Input Normally Open Switch Terminal. NO is connected to COM when IN is high. FUNCTION
6
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High-Current, 25, SPDT, CMOS Analog Switches
Detailed Description
The MAX4659/MAX4660 are single, single-pole/doublethrow (SPDT) CMOS analog switches. The CMOS switch construction provides rail-to-rail signal handling while consuming very little power. The switch is controlled by a TTL/CMOS level compatible digital input. The MAX4659/MAX4660 have a normally open switch and a normally closed switch. These devices can be operated with either single power supplies or dual power supplies. Operation at up to 20V supplies allows users a wide switching dynamic range. Additionally, asymmetrical operation is possible to tailor performance to a particular application. These switches have been specifically designed to handle high switch currents, up to 200mA peak current and 150mA continuous currents. In order to do this, a new technique is used to drive the body of the output N-channel device. (Note: The basic switch between the input, NC/NO terminal and the output common terminal consists of an N-channel MOSFET and a P-channel MOSFET in parallel.) The standard method limits operation to approximately a 600mV drop across the switch. More than 600mV causes an increase in IdON leakage current (due to the turn-on of on-chip parasitic diodes), and an increase in V+ supply current. With this new sensing method, there is no limitation to the voltage drop across the switch. Current and voltage are limited only by the power dissipation rating of the package and the absolute maximum ratings of the switch. When the analog input voltage drop is approximately 7mV there is an increase in power supply current from 90A to 2mA (typ) within a 1mV to 7mV range, caused by the new sensing/driving circuitry. supply pins (Figure 1). Adding diodes reduces the analog signal range to one diode drop below V+ and one diode drop above V-, but does not affect the devices' low switch resistance and low leakage characteristics. Device operation is unchanged, and the difference between V+ and V- should not exceed 44V. The protection diode for the negative supply is not required when V- is connected to GND.
MAX4659/MAX4660
Off-Isolation at High Frequencies
In 50 systems, the high-frequency on-response of these parts extends from DC to above 100MHz, with a typical loss of -2dB. When the switch is turned off, however, it behaves like a capacitor and off-isolation decreases with increasing frequency. This effect is more pronounced with higher source and load impedances. Above 5MHz, circuit board layout becomes critical. The graphs shown in the Typical Operating Characteristics were taken using a 50 source and load connected with BNC connectors.
V+
D1 V+
N_ COM Vg
VD2
Applications Information
Overvoltage Protection
Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings can cause permanent damage to the devices. First, connect GND, followed by V+, V-, and the remaining pins. If power-supply sequencing is not possible, add two small-signal diodes (D1, D2) in series with
V-
Figure 1. Overvoltage Protection Using Blocking Diodes
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7
High-Current, 25, SPDT, CMOS Analog Switches MAX4659/MAX4660
Test Circuits/Timing Diagrams
MAX4659/MAX4660
V+ LOGIC INPUT +3V 50% 0 t R < 20ns t F < 20ns NC V+ COM NO IN LOGIC INPUT GND VVCL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL 300 CL 35pF VO
VNC VNO
t TRANS VNC SWITCH VO OUTPUT V NO
t TRANS 0.9V NO 0.9V NC
Figure 2. Functional Diagram
MAX4659/MAX4660
V+ V+ LOGIC INPUT COM VOUT RL 300 GND VVCL 35pF SWITCH OUTPUT (VOUT)
+3V 50% 0
+3V
NC NO IN
LOGIC INPUT
0.9 VOUT tBBM
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 3. Break-Before-Make Time
V+ VO COM VO V GEN IN OFF ON Q = (V O )(C L ) IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. OFF VVIN = +3V GND V+ NC OR NO V-
MAX4659/MAX4660
VO CL 1nF
Figure 4. Charge Injection 8 _______________________________________________________________________________________
High-Current, 25, SPDT, CMOS Analog Switches
Test Circuits/Timing Diagrams (continued)
V+
MAX4659/MAX4660
C SIGNAL GENERATOR COM
V+
MAX4659/MAX4660
C
MAX4659/MAX4660
V+
V+ COM
VIN
IN ANALYZER RL VNC OR NO GND VC
IN CAPACITANCE METER NC OR NO f = 1MHz GND VC
V IN
V-
Figure 5. Off-Isolation
Figure 7. Channel Off-Capacitance
C
V+
C
V+
MAX4659/MAX4660
MAX4659/MAX4660
50
SIGNAL GENERATOR
V+
COM
V+ COM CAPACITANCE METER IN f = 1MHz V IN
NC
VIN ANALYZER RL
IN
NO GND VC
NC OR NO GND VC
V-
V-
Figure 6. Crosstalk
Figure 8. Channel On-Capacitance
Chip Information
TRANSISTOR COUNT: 45 PROCESS: CMOS
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High-Current, 25, SPDT, CMOS Analog Switches MAX4659/MAX4660
Package Information
8L, MAX, EXP PAD.EPS
10
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High-Current, 25, SPDT, CMOS Analog Switches
Package Information (continued)
SOICN.EPS
MAX4659/MAX4660
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11
High-Current, 25, SPDT, CMOS Analog Switches MAX4659/MAX4660
Package Information (continued)
8LUMAXD EPS
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.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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