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19-1709; Rev 0; 4/00
Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch
General Description
The MAX4636 is a fast, dual 4 single-pole/doublethrow (SPDT) analog switch that operates with supply voltages from +1.8V to +5.5V. High switching speeds, 1 on-resistance flatness, and low power consumption make this device ideal for audio/video, communications, and battery-operated devices. Containing two independently controllable SPDT switches in a single 10-pin MAX package, the MAX4636 uses little board space, and its low power consumption ensures minimal impact on your power budget. The analog signal range extends to the supply rails.
Features
o Guaranteed On-Resistance 4 (max) +5V Supply 5.5 (max) +3V Supply o Guaranteed Match Between Channels 0.2 (max) o Guaranteed Flatness Over Signal Range 1 (max) with +5V Supply o Fast Switching Speeds 14ns (max) Turn-On Time 6ns (max) Turn-Off Time o 1.8V Operation 100 (typ) On-Resistance Over Temperature 56ns (typ) Turn-On Time 17ns (typ) Turn-Off Time o +1.8V to +5.5V Single-Supply Operation o Rail-to-Rail(R) Signal Handling o Low Crosstalk: -67dB at 1MHz o High Off-Isolation: -65dB at 1MHz o THD: 0.1%
MAX4636
________________________Applications
Battery-Powered Equipment Relay Replacement Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Sample-and-Hold Circuits Communications Circuits
Ordering Information
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
PART MAX4636EUB TEMP. RANGE -40C to +85C PIN-PACKAGE 10 MAX
Pin Configuration/Functional Diagram/Truth Table
TOP VIEW
IN1 1 NC1 GND NC2 IN2 2 3 4 5 10 COM1 9 NO1 V+ NO2 COM2
MAX4636
8 7 6
MAX
IN_ 0 1 NO_ TO COM_ NC_ TO COM_ OFF ON ON OFF
________________________________________________________________ MAXIM Integrated Products
1
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Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch MAX4636
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND) V+, IN_ .....................................................................-0.3V to +6V COM_, NC_, NO_ (Note 1) .......................... -0.3V to (V+ + 0.3V) Continuous Current into Any Terminal .............................30mA Peak Current into COM_, NC_, NO_ (pulsed at 1ms, 10% duty cycle).................................100mA Continuous Power Dissipation (TA = +70C) 10-Pin MAX (derate 4.7mW/C above +70C) ............330mW Operating Temperature Range .......................... -40C to +85C Storage Temperature Range ........................... -65C to +150C Lead Temperature (soldering, 10s) ............................... +300C
Note 1: Signals on NO_, NC_, or COM_ 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--Single +5V Supply
(V+ = +4.5V to +5.5V, VIH = +2.4V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2)
PARAMETER ANALOG SWITCH Analog Signal Range VCOM_ , VNO_ , V NC_ RON RON RFLAT(ON) INC_(OFF) , INO_(OFF) V+ = 4.5V, ICOM_ = 10mA, VNO_ or V NC_ = 0 to V+ V+ = 4.5V, ICOM_ = 10mA, VNO_ or V NC_ = 0 to V+ TA = +25C TA = T MIN to TMAX TA = +25C TA = T MIN to TMAX 0.5 0.01 0 2.5 0.1 V+ 4 4.5 0.2 0.4 1 1.2 -0.1 -0.3 -0.1 -0.3 -0.1 -0.3 0.01 0.01 0.1 nA TA = T MIN to TMAX TA = +25C TA = T MIN to TMAX TA = +25C TA = T MIN to TMAX 0.3 0.1 nA 0.3 0.1 nA 0.3 V SYMBOL CONDITIONS MIN TYP MAX UNITS
On-Resistance On-Resistance Match Between Channels (Note 3) On-Resistance Flatness (Note 4) NO_, NC_ Off-Leakage Current (Note 5) COM_ Off-Leakage Current (Note 5) COM_ On-Leakage Current (Note 5) DIGITAL I/O (IN1, IN2) Input Logic High Input Logic Low Input Leakage Current

V+ = 4.5V, I COM_ = 10mA, TA = +25C VNO_ or V NC_ = 0 to V+ TA = T MIN to TMAX V+ = 5.5V; V COM_ = 1V, 4.5V; VNO_ or VNC_ = 4.5V, 1V TA = +25C
V+ = 5.5V; V COM_ = 1V, ICOM_(OFF) 4.5V; VNO_ or VNC_ = 4.5V, 1V ICOM_(ON) V+ = 5.5V; VCOM_ = 4.5V, 1V; VNO_ or VNC_ = 4.5V, 1V or floating
VIH VIL IIH , IIL VIN_ = 0 or +5.5V
2.4 0.8 -100 5 100
V V nA
2
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Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch
ELECTRICAL CHARACTERISTICS--Single +5V Supply (continued)
(V+ = +4.5V to +5.5V, VIH = +2.4V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2)
PARAMETER DYNAMIC Turn-On Time (Note 5) Turn-Off Time (Note 5) Break-Before-Make Time (Note 5) Charge Injection NO_, NC_ Off-Capacitance COM_ On-Capacitance Off-Isolation (Note 6) Crosstalk (Note 7) Total Harmonic Distortion SUPPLY Positive Supply Current I+ V+ = 5.5V, V IN_ = 0 or V+ 0.001 1.0 A tON VNO_ , V NC_ = 3V; RL = 300, C L = 35pF, Figure 1a VNO_ , V NC_ = 3V; RL = 300, C L = 35pF, Figure 1a VNO_ , V NC_ = 3V; RL = 300, C L = 35pF, Figure 1b TA = +25C TA = T MIN to TMAX TA = +25C TA = T MIN to TMAX TA = +25C TA = T MIN to TMAX 1 2 9 32 -52 -65 -66 -67 0.1 pC pF pF dB dB % 7 ns 5 12 14 ns 16 6 ns 8 SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4636
tOFF
tBBM Q
VGEN = 2V, R GEN = 0, C L = 1.0nF, Figure 2
CNO_(OFF) , VNO_ , V NC_ = GND, f = 1MHz, Figure 3 CNC_(OFF) CCOM_(ON) VCOM_ = GND, f = 1MHz, Figure 3 VISO VCT THD CL = 5pF, R L = 50, f = 10MHz, Figure 4 CL = 5pF, RL = 50, f = 1MHz, Figure 4 CL = 5pF, R L = 50, f = 10MHz, Figure 4 CL = 5pF, R L = 50, f = 1MHz, Figure 4 RL = 600, V NO_ = 5Vp-p, f = 20Hz to 20kHz
ELECTRICAL CHARACTERISTICS--Single +3V Supply
(V+ = +2.7V to +3.6V, VIH = +2.0V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2)
PARAMETER ANALOG SWITCH Analog Signal Range SYMBOL VCOM_, VNO_, VNC_ RON RON RFLAT(ON) INO_(OFF), INC_(OFF) V+ = 2.7V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ V+ = 2.7V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ V+ = 2.7V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX -0.1 -0.3 -0.1 -0.3 0.01 0.01 1.5 0.1 CONDITIONS MIN TYP MAX UNITS
0 5
V+ 5.5 8 0.2 0.4 2 2.5 0.1 0.3 0.1 0.3
V
On-Resistance On-Resistance Match Between Channels (Note 3) On-Resistance Flatness (Note 4) NO_, NC_ Off-Leakage Current (Note 5) COM_ Off-Leakage Current (Note 5)
nA nA
V+ = 3.3V; VCOM_ = 1V, 3V; TA = +25C VNO_ or VNC_ = 3V, 1V TA = TMIN to TMAX V+ = 3.3V; VCOM_ = 1V, 3V; TA = +25C ICOM_(OFF) VNO_ or VNC_ = 3V, 1V T =T to T
A MIN MAX
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Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch MAX4636
ELECTRICAL CHARACTERISTICS--Single +3V Supply (continued)
(V+ = +2.7V to +3.6V, VIH = +2.0V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2)
PARAMETER COM_ On-Leakage Current (Note 5) DIGITAL I/O (IN1, IN2) Input Logic High Input Logic Low Input Leakage Current DYNAMIC Turn-On Time (Note 5) tON VNO_, VNC_ = 2V; CL = 35pF, RL = 300, Figure 1a VNO_, VNC_ = 2V; CL = 35pF, RL = 300, Figure 1a VNO_, VNC_ = 2V; CL = 35pF, RL = 300, Figure 1b Q TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 1 11 9 32 -52 -65 -66 -67 0.001 1 pC pF pF dB dB 7 ns 6 14 18 ns 20 8 ns 10 VIH VIL IIH, IIL VIN_ = 0 or +5.5V -100 5 2.0 0.4 100 V V nA SYMBOL ICOM_(ON) CONDITIONS V+ = 3.3V; VCOM_ =1V, 3V; VNO_ or VNC_ = 1V, 3V, or floating TA = +25C TA = TMIN to TMAX MIN -0.1 -0.3 TYP 0.01 MAX 0.1 nA 0.3 UNITS
Turn-Off Time (Note 5)
tOFF
Break-Before-Make Time (Note 5) Charge Injection NO_, NC_ Off-Capacitance COM On-Capacitance Off-Isolation (Note 6) Crosstalk (Note 7) SUPPLY Positive Supply Current I+
VGEN = 1.5V, RGEN = 0, CL = 1.0nF, Figure 2
CNO_(OFF), VNO_, VNC_ = GND, f = 1MHz, Figure 3 CNC_(OFF) CCOM (ON) VCOM = GND, f = 1MHz, Figure 3 VISO VCT CL = 5pF, RL = 50, f = 10MHz, Figure 4 CL = 5pF, RL = 50, f = 1MHz, Figure 4 CL = 5pF, RL = 50, f = 10MHz, Figure 4 CL = 5pF, RL = 50, f = 1MHz, Figure 4 V+ = 3.6V, VIN = 0 or +3.6V
A
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value a MAXIMum, is used in this data sheet. Note 3: RON = RON(MAX) - RON(MIN). Note 4: Flatness is defined as the difference between the MAXIMum and minimum values of on-resistance as measured over the specified analog signal ranges. Note 5: Guaranteed by design. Note 6: Off-Isolation = 20log10 (VCOM / VNO), VCOM = output, VNO = input to off switch. Note 7: Between any two switches.
4
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Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch
Typical Operating Characteristics
(TA = +25C, unless otherwise noted.)
MAX4636
ON-RESISTANCE vs. VCOM
MAX4636-01
ON-RESISTANCE vs. VCOM AND TEMPERATURE (V+ = +3V)
MAX4636-02
ON-RESISTANCE vs. VCOM AND TEMPERATURE (V+ = +5V)
MAX4636-03
14 12 V+ = 1.8V 10
4.0 TA = +85C 3.5
3.0 TA = +85C 2.5
RON ()
RON ()
8 6 4 2
3.0
V+ = 3.0V V+ = 4.5V
RON () 2.0 TA = -40C TA = +25C 1.5 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 3.0 0 1 2 3 4 5 VCOM (V)
V+ = 2.5V
2.5
TA = -40C TA = +25C
V+ = 5.0V 0 0 1 2 3 4 5 VCOM (V) 2.0
ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE (V+ = +5V)
MAX4636-04
CHARGE INJECTION vs. VCOM
MAX4636-05
TURN-ON/OFF TIME vs. SUPPLY VOLTAGE
MAX4636-06
0.15 0.10 0.05 0 LEAKAGE (nA) -0.05 -0.10 -0.15 -0.20 -0.25 -0.30 -0.35 -50 0 50 NO(OFF) ICOM(ON)
25 20 15 Q (pC) 10 VCC = +3V 5 VCC = +5V
40
tON/tOFF (ns)
20
tON tOFF
0 -5 100 0 1 2 3 4 5 TEMPERATURE (C) VCOM (V) 0 1.5 2.5 3.5 4.5 5.5 SUPPLY VOLTAGE (V)
TURN-ON/OFF TIME vs. TEMPERATURE (V+ = +5V)
MAX4636-07
POWER-SUPPLY CURRENT vs. TEMPERATURE (V+ = +5V)
MAX4636-08
LOGIC-LEVEL THRESHOLD vs. SUPPLY VOLTAGE
MAX4636-09
25
2.0
2.5
LOGIC-LEVEL THRESHOLD (V) -50 0 50 100
20 tON/tOFF (ns)
tON I+, IGND (nA)
1.5
2.0
15
1.5
1.0
10 tOFF
1.0
0.5 5
0.5
0 -50 0 50 100 TEMPERATURE (C)
0 TEMPERATURE (C)
0 1 2 3 SUPPLY VOLTAGE (V) 4 5
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Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch MAX4636
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.)
FREQUENCY RESPONSE
MAX4636-10
TOTAL HARMONIC DISTORTION vs. FREQUENCY
MAX4636-11
10 0 -10 BANDWIDTH -20 LOSS (dB) -30 OFF-ISOLATION -40 -50 -60 -70 -80 0.01 0.1 1 10 100 CROSSTALK
0.12 0.10 0.08 THD (%) 0.06 0.04 0.02 0 600 IN AND OUT V+ = 5V 10 100 1k FREQUENCY (Hz) 10k
1k
100k
FREQUENCY (MHz)
Pin Description
PIN 1 2 3 4 5 6 7 8 9 10 NAME IN1 NC1 GND NC2 IN2 COM2 NO2 V+ NO1 COM1 Logic Control for Switch 1 Normally Closed Terminal of Switch 1 Ground Normally Closed Terminal of Switch 2 Logic Control Input for Switch 2 Common Terminal of Switch 2 Normally Open Terminal of Switch 2 Input Supply Voltage, +1.8V to +5.5V Normally Open Terminal of Switch 1 Common Terminal of Switch 1 FUNCTION
6
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Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch MAX4636
MAX4636
V+ V+ VIN NC_ or NO_ COM_ NO_ or NC_ IN_ LOGIC INPUT GND RL CL SWITCH OUTPUT 0 t ON VOUT 0.9 V0UT VOUT t OFF 0.9 VOUT LOGIC INPUT VIH + 0.5V 50% 0 t r < 5ns t f < 5ns
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE.
Figure 1a. Switching Time
MAX4636
V+ V+ LOGIC INPUT
t r < 5ns t f < 5ns VIH + 0.5V 50% 0 COM_ VOUT
VIN
NC_ or NO_ NO_ or NC_ IN_ RL GND
CL
LOGIC INPUT
VOUT tD CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
0.9 VOUT
Figure 1b. Break-Before-Make Interval
MAX4636
V+ V+ RGEN NC_ OR NO_ GND IN OFF ON Q = (V OUT )(C L ) COM_ CL VOUT VOUT IN OFF ON
VOUT
OFF
V GEN
VINL TO VINH
IN
OFF
IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 2. Charge Injection _______________________________________________________________________________________ 7
Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch MAX4636
Detailed Description
The MAX4636 is a low-on-resistance (RON), low-voltage, dual SPDT analog switch that operates from a +1.8V to +5.5V supply. The MAX4636 features very fast switching speed (tON = 14ns max, tOFF = 6ns max) and guaranteed break-before-make switching. Its low MAXIMum RON allows high continuous currents to be switched in a variety of applications.
Logic Inputs
The MAX4636 logic inputs (IN1, IN2) can be driven up to +5.5V, regardless of the voltage on V+. This allows interfacing to 5V logic signals while operating with a +3.3V supply voltage without external level translation.
Analog Signal Levels
Analog signals ranging over the entire supply voltage (V+ to GND) can be passed with very little change in on-resistance (see Typical Operating Characteristics). The switches are bidirectional, so the NO_, NC_, and COM_ pins may be used as either inputs or outputs.
Applications Information
10nF
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. 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. If this sequencing is not possible, and if the analog inputs are not current limited to less than 30mA, add a small-signal diode (D1) as shown in Figure 5. If the analog signal can dip below GND, add D2. Adding protection diodes reduces the analog range to a diode drop (about 0.7V) below V+ (for D1), and a diode drop above ground (for D2).
V+ COM_
MAX4636
VINL OR VINH
IN_ CAPACITANCE METER f = 1MHz NC_ OR NO_ GND
Figure 3. Channel Off/On-Capacitance
+5V 10nF OFF-ISOLATION = 20log NETWORK ANALYZER 0 OR V+ IN_ V+ COM_ VIN 50 50
VOUT VIN
V ON-LOSS = 20log OUT VIN V CROSSTALK = 20log OUT VIN
NC_ 50
MAX4636
NO GND VOUT MEAS REF
50
50
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
Figure 4. On-Loss, Off-Isolation, and Crosstalk 8 _______________________________________________________________________________________
Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch
Chip Information
POSITIVE SUPPLY D1 V+
MAX4636
TRANSISTOR COUNT: 239 PROCESS: CMOS
MAX4636
NO_ Vg
COM_
GND D2
Figure 5. Overvoltage Protection Using Two External Blocking Diodes
On-resistance increases slightly at low supply voltages. MAXIMum supply voltage (V+) must not exceed +6V. Adding protection diode D2 causes the logic threshold to be shifted relative to GND. Protection diodes D1 and D2 also protect against some overvoltage situations. With Figure 5's circuit, if the supply voltage is below the absolute MAXIMum rating, and if a fault voltage up to the absolute MAXIMum rating is applied to an analog signal pin, no damage results.
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9
Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch MAX4636
Package Information
10LUMAX.EPS
Note: The MAX4636 does not have an exposed pad.
10
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Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch MAX4636
NOTES
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11
Fast, Low-Voltage, Dual 4 SPDT CMOS Analog Switch MAX4636
NOTES
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) 2000 MAXIM Integrated Products Printed USA is a registered trademark of MAXIM Integrated Products.

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