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19-1062; Rev 1; 11/99
Low-Voltage, SPST, CMOS Analog Switches
_________________General Description
The MAX4501/MAX4502 are single-pole/single-throw (SPST), low-voltage, single-supply, CMOS analog switches. The MAX4501 is normally open (NO). The MAX4502 is normally closed (NC). These CMOS switches can operate continuously with a single supply between +2V and +12V. Each switch can handle Rail-to-Rail(R) analog signals. The off-leakage current is only 1nA at +25C or 10nA at +85C. The digital input has 0.8V and 2.4V logic thresholds, ensuring TTL/CMOS-logic compatibility when using a single +5V supply.
_____________________________Features
o o o o Available in SOT23-5 and SC70-5 Packages +2V to +12V Single-Supply Operation Guaranteed On-Resistance: 250 at +5V Guaranteed Low Off-Leakage Current 1nA at +25C 10nA at +85C Guaranteed Low On-Leakage Current 2nA at +25C 20nA at +85C Low Charge Injection: 10pC Fast Switching Speed: tON = 75ns, tOFF = 50ns TTL/CMOS-Logic Compatible with +5V Supply
MAX4501/MAX4502
o
o o o
_________________________Applications
Battery-Operated Equipment Audio and Video Signal Routing
________________Ordering Information
PART MAX4501CUK-T TEMP. RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -55C to +125C PINPACKAGE 5 SOT23-5 8 SO 8 Plastic DIP Dice* 5 SC70-5 5 SOT23-5 8 SO 8 Plastic DIP 8 CERDIP** TOP MARK AAAA -- -- -- AAE AAAA -- -- --
Low-Voltage Data-Acquisition Systems Communications Circuits PCMCIA Cards Cellular Phones Modems
MAX4501CSA MAX4501CPA MAX4501C/D MAX4501EXK-T MAX4501EUK-T MAX4501ESA MAX4501EPA MAX4501MJA
Ordering Information continued at end of data sheet. *Contact factory for dice specifications. **Contact factory for availability.
_______________________Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
COM 1 N.C. 2 N.C. 3 V+ 4 8 7 6 NO GND IN N.C. COM 1 N.C. 2 N.C. 3 V+ 4 8 7 6 NC GND IN N.C. NO 2 NC 2 COM 1 5 V+ COM 1 5 V+
MAX4501 SO/DIP
5
MAX4502 SO/DIP
INPUT LOW HIGH
5
GND 3
MAX4501
4
IN
GND 3
MAX4502
4
IN
SC70-5/SOT23-5
SWITCH STATE MAX4502 MAX4501 ON OFF OFF ON
SC70-5/SOT23-5
N.C. = NOT INTERNALLY CONNECTED
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. ________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
Low-Voltage, SPST, CMOS Analog Switches MAX4501/MAX4502
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND) V+ ...........................................................................-0.3V to +13V Voltage into Any Terminal (Note 1) ..........-0.3V to (V+ + 0.3V) or 10mA (whichever occurs first) Continuous Current into Any Terminal..............................10mA Peak Current, NO or COM (pulsed at 1ms, 10% duty cycle)..................................20mA ESD per Method 3015.7 ..................................................>2000V Continuous Power Dissipation (TA = +70C) 5-Pin SC70-5 (derate 2.5mW/C above +70C)...........200mW 5-Pin SOT23-5 (derate 7.1mW/C above +70C) ........571mW 8-Pin SO (derate 5.88mW/C above +70C)................471mW 8-Pin Plastic DIP (derate 9.09mW/C above +70C) ...727mW 8-Pin CERDIP (derate 8.00mW/C above +70C)........640mW Operating Temperature Ranges MAX4501C_ _/MAX4502C_ _ .............................0C to +70C MAX4501E_ _/MAX4502E_ _ ...........................-40C to +85C MAX4501MJA/MAX4502MJA ........................-55C to +125C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
Note 1: Voltages exceeding V+ or GND on any signal terminal 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--+5V Supply
(V+ = +4.5V to +5.5V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER ANALOG SWITCH Analog Signal Range COM to NO or NC On-Resistance NO or NC Off-Leakage Current (Notes 3, 4) VCOM, VNO, VNC RON INO(OFF), INC(OFF) VCOM = 3.5V, ICOM = 1mA V+ = 5.5V, VCOM = 1V, VNO or VNC = 4.5V TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN C, E to TMAX M TA = +25C TA = TMIN C, E to TMAX M TA = +25C TA = TMIN C, E to TMAX M -1 -10 -100 -1 -10 -100 -2 -20 -200 2.4 0 VIN = V+, 0 VNO = VNC = 1.5V, VIN = 3V, RL = 1k, CL = 35pF, Figure 1 VNO = VNC = 1.5V, VIN = 3V, RL = 1k, CL = 35pF, Figure 1 -1 0.03 0.01 0.01 0.01 0 90 V+ 250 350 1 10 100 1 10 100 2 20 200 V+ 0.8 1 V V A nA nA nA V SYMBOL CONDITIONS MIN TYP MAX UNITS
COM Off-Leakage Current (Notes 3, 4)
V+ = 5.5V, ICOM(OFF) VCOM = 1V, VNO or VNC = 4.5V V+ = 5.5V, VCOM = 1V, 4.5V
COM On-Leakage Current (Notes 3, 4) DIGITAL I/O Input Logic High Input Logic Low Input Current Logic High or Low
ICOM(ON)
VINH VINL IINH, IINL
SWITCH DYNAMIC CHARACTERISTICS TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 10 16 75 ns 150 50 ns 150 Turn-On Time tON
Turn-Off Time
tOFF
2
_______________________________________________________________________________________
Low-Voltage, SPST, CMOS Analog Switches MAX4501/MAX4502
ELECTRICAL CHARACTERISTICS--+5V Supply (continued)
(V+ = +4.5V to +5.5V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS CL = 1nF, VNO = 0, RS = 0, TA = +25C, Figure 2 RL = 50, CL = 15pF, VNO = 1VRMS, f = 100kHz, TA = +25C, Figure 3 f = 1MHz, Figure 4 f = 1MHz, Figure 4 f = 1MHz, Figure 4 TA = +25C TA = TMIN to TMAX -1 -10 MIN TYP MAX UNITS SWITCH DYNAMIC CHARACTERISTICS (continued) Charge Injection (Note 5) Off-Isolation NO or NC Off-Capacitance COM Off-Capacitance COM On-Capacitance POWER SUPPLY V+ Supply Current I+ VIN = 0 or V+ 1 10 A Q VISO CNO(OFF), CNC(OFF) CCOM(OFF) CCOM(ON) 1 < -100 3 3 8 10 pC dB pF pF pF
ELECTRICAL CHARACTERISTICS--+12V Supply
(V+ = +11.4V to +12.6V, VINH = 5.0V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER ANALOG SWITCH Analog Signal Range COM to NO or NC On-Resistance NO or NC Off-Leakage Current (Notes 3, 4) VCOM, VNO, VNC RON INO(OFF), INC(OFF) VCOM = 10V, ICOM = 1mA VCOM = 10V, VNO or VNC = 1V, V+ = +12.6V TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN C, E to TMAX M TA = +25C TA = TMIN C, E to TMAX M TA = +25C TA = TMIN C, E to TMAX M -5 -50 -500 -5 -50 -500 -10 -100 -1000 5.0 0 VIN = 0 or V+ TA = +25C TA = TMIN to TMAX -1 -1 -10 0.03 0 40 V+ 160 200 5 50 500 5 50 500 10 100 1000 V+ 0.8 1 1 10 V V A nA nA nA V SYMBOL CONDITIONS MIN TYP MAX UNITS
COM Off-Leakage Current (Notes 3, 4)
VCOM = 10V, ICOM(OFF) VNO or VNC = 1V, V+ = +12.6V VCOM = 10V, V+ = +12.6V
COM On-Leakage Current (Notes 3, 4) DIGITAL I/O Input Logic High Input Logic Low Input Current Logic High or Low POWER SUPPLY V+ Supply Current
ICOM(ON)
VINH VINL IINH, IINL
I+
IN = 0 or V+
A
_______________________________________________________________________________________
3
Low-Voltage, SPST, CMOS Analog Switches MAX4501/MAX4502
ELECTRICAL CHARACTERISTICS--+3V Supply
(V+ = +3.0V to +3.6V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER ANALOG SWITCH Analog Signal Range COM to NO or NC On-Resistance DIGITAL I/O Input Logic High Input Logic Low Input Current Logic High or Low VINH VINL IINH, IINL VIN = 0 or V+ 2.4 0 -1.00 0.03 V+ 0.8 1.00 V V A VCOM, VNO, VNC RON VCOM = 1.5V, ICOM = 0.1mA TA = +25C TA = TMIN to TMAX 0 175 V+ 600 800 V SYMBOL CONDITIONS MIN TYP MAX UNITS
SWITCH DYNAMIC CHARACTERISTICS Turn-On Time (Note 5) tON VNO = VNC = 1.5V, VIN = 3V, RL = 1k, Figure 1 VNO = VNC = 1.5V, VIN = 3V, RL = 1k, Figure 1 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 0.5 -1 -10 10 45 300 ns 500 125 ns 175 10 1 10 pC
Turn-Off Time (Note 5) Charge Injection (Note 5) POWER SUPPLY V+ Supply Current
tOFF Q
CL = 1nF, TA = +25C, Figure 2 TA = +25C TA = TMIN to TMAX
I+
IN = 0 or V+
A
Note 2: Algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. Note 3: Leakage parameters are 100% tested at maximum-rated hot operating temperature, and are guaranteed by correlation at +25C. Note 4: SOT and SC70 packaged parts are 100% tested at +25C. Limits at maximum and minimum rated temperature are guaranteed by design and correlation limits at +25C. Note 5: Guaranteed, not production tested.
4
_______________________________________________________________________________________
Low-Voltage, SPST, CMOS Analog Switches
__________________________________________Typical Operating Characteristics
(V+ = +5V, GND = 0, TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM AND TEMPERATURE
MAX4501-01
MAX4501/MAX4502
ON-RESISTANCE vs. VCOM
MAX4501-02
OFF-LEAKAGE vs. TEMPERATURE
V+ = 5.5V 100
MAX4501-03
250
1000 V+ = 2V
1000
200 V+ = 3V RON () 100 V+ = 5V V+ = 9V OFF-LEAKAGE (pA)
RON ()
150 TA = +85C 100
TA = +125C
10
50
TA = +25C TA = -55C
V+ = 12V
1
0 0 1 2 3 4 5 VCOM (V)
10 0 2 4 6 VCOM (V) 8 10 12
0.1 -50 -25 0 25 50 75 100 125 TEMPERATURE (C)
ON-LEAKAGE vs. TEMPERATURE
V+ = 5.5V 1000 ON-LEAKAGE (pA)
MAX4501-04
FREQUENCY RESPONSE
0 -10 -20 -30 LOSS (dB) -40 -50 -60 OFF-ISOLATION ON-LOSS ON-PHASE
MAX4501-05
10,000
10 0 -10 -20 -30 -40 -50 -60 PHASE (DEGREES)
100
10
1
-70 -80 V+ = +5V 50 IN/OUT 0.1 1 10 FREQUENCY (MHz) 100 1000
-70 -80
0.1 -50 -25 0 25 50 75 100 125
-90
TEMPERATURE (C)
CHARGE INJECTION vs. VCOM
MAX4501-05a
TOTAL HARMONIC DISTORTION vs. FREQUENCY
MAX4501-06
SWITCHING TIME vs. SUPPLY VOLTAGE
RLOAD = 1k tON 90 80
MAX4501-07
6 5 V+ = 12V 4 3 2 1 0 0 1 2 3 4 5 6 7 8 V+ = 5V V+ = 3V
100 V+ = 5V 600 IN/OUT 10
100
70 tON /tOFF (ns) 60 50 40 30 20 10 tOFF
THD (%)
Q (pC)
1
0.1
0.01
9 10 11 12
10
100
1k FREQUENCY (Hz)
10k
100k
0 0 2 4 6 VSUPPLY (V) 8 10 12
VCOM (V)
_______________________________________________________________________________________
5
Low-Voltage, SPST, CMOS Analog Switches MAX4501/MAX4502
______________________________________________________________Pin Description
PIN MAX4501 SO/DIP 1 2, 3, 5 4 6 7 8 -- SC70-5/SOT23-5 1 -- 5 4 3 2 -- SO/DIP 1 2, 3, 5 4 6 7 -- 8 MAX4502 SC70-5/SOT23-5 1 -- 5 4 3 -- 2 COM N.C. V+ IN GND NO NC Analog Switch Common Terminal No Connection. Not internally connected. Positive Supply-Voltage Input (analog and digital) Digital Control Input Ground Analog Switch (normally open) Analog Switch (normally closed) NAME FUNCTION
Note: NO, NC, and COM pins are identical and interchangeable. Any may be considered as an input or an output; signals pass equally well in both directions.
Applications Information
Power-Supply Considerations
The MAX4501/MAX4502 are constructed like most CMOS analog switches, except they have only two supply pins: V+ and GND. V+ and GND drive the internal CMOS switches and set the analog voltage limits of the switch. Reverse ESD-protection diodes are internally connected between each analog signal pin and both V+ and GND. One of these diodes conducts if any analog signal exceeds V+ or GND. During normal operation, these and other reverse-biased ESD diodes leak, forming the only current drawn from V+ or GND. Virtually all the analog leakage current comes from the ESD diodes. Although the ESD diodes on a given signal pin are identical and therefore fairly well balanced, they are reverse biased differently. Each is biased by either V+ or GND and the analog signal. This means their leakages will vary as the signal varies. The difference in the two diode leakages to the V+ and GND pins constitutes the analog signal-path leakage current. All analog leakage current flows between each pin and one of the supply terminals, not to the other switch terminal. This is why both sides of a given switch can show leakage currents of the same or opposite polarity. There is no connection between the analog-signal paths and V+ or GND. V+ and GND also power the internal logic and logiclevel translators, and set the input logic limits. The logic-level translators convert the logic levels to switched V+ and GND signals to drive the analog sig-
nal gates. This drive signal is the only connection between the logic supplies (and signals) and the analog supplies. COM, NO, and NC pins have ESD-protection diodes to V+ and GND. The logic-level thresholds are CMOS/TTL compatible when V+ is +5V. As V+ rises, the threshold increases slightly. When V+ reaches +12V, the logic-level threshold is about 3V--above the TTL guaranteed high-level minimum of 2.8V, but still compatible with CMOS outputs. Do not connect the MAX4501/MAX4502's V+ pin to +3V and then connect the logic-level pins to TTL logic-level signals. TTL levels can exceed +3V and violate the absolute maximum ratings, damaging the part and/or external circuits.
High-Frequency Performance
In 50 systems, signal response is reasonably flat up to 250MHz (see Typical Operating Characteristics). Above 20MHz, the on-response has several minor peaks that are highly layout dependent. The problem is not in turning the switch on; it's in turning it off. The offstate switch acts like a capacitor and passes higher frequencies with less attenuation. At 10MHz, off-isolation is about -60dB in 50 systems, decreasing approximately 20dB per decade as frequency increases. Higher circuit impedances also cause off-isolation to decrease. Adjacent channel attenuation is about 3dB above that of a bare IC socket, and is due entirely to capacitive coupling.
6
_______________________________________________________________________________________
Low-Voltage, SPST, CMOS Analog Switches
______________________________________________Test Circuits/Timing Diagrams
V+ +3V V+ NO VNO VIN 0 50%
MAX4501/MAX4502
VIN
MAX4501
IN 50 GND COM 1k VOUT 35pF
VOUT
90%
90%
0 tON tOFF
V+ +3V V+ NC VNC VIN 0 50%
VIN
MAX4502
IN 50 GND COM 1k VOUT 35pF
VOUT 90% 90%
0 tOFF tON
Figure 1. Switching Times
V+ V+ NO OR NC VNO OR VNC = 0 VIN 0 MAX4502 VOUT CL 1000pF VOUT VOUT VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q = VOUT * CL MAX4501 V+
VIN
IN 50
MAX4501 MAX4502 COM
GND
Figure 2. Charge Injection
_______________________________________________________________________________________
7
Low-Voltage, SPST, CMOS Analog Switches MAX4501/MAX4502
_________________________________Test Circuits/Timing Diagrams (continued)
V+ 10nF OFF-ISOLATION = 20log NETWORK ANALYZER V+ NO OR NC VIN 50 50 ON-LOSS = 20log VOUT VIN VOUT VIN
V+ IN
MAX4501 MAX4502 COM
GND
VOUT
MEAS
REF MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM AND NO OR NC TERMINAL. ON-LOSS IS MEASURED BETWEEN COM AND NO OR NC TERMINAL. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
50
50
Figure 3. Off-Isolation and On-Loss
V+
___________________Chip Topography
V+ NO OR NC
IN V+
AS REQUIRED
IN
MAX4501 MAX4502 COM
GND
1MHz CAPACITANCE ANALYZER
COM
0.031" (0.79mm)
GND
NO or NC
Figure 4. NO, NC, and COM Capacitance
Ordering Information (continued)
PART MAX4502CUK-T MAX4502CSA MAX4502CPA MAX4502C/D MAX4502EXK-T MAX4502EUK-T MAX4502ESA MAX4502EPA MAX4502MJA TEMP. RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -55C to +125C PINPACKAGE 5 SOT23-5 8 SO 8 Plastic DIP Dice* 5 SC70-5 5 SOT23-5 8 SO 8 Plastic DIP 8 CERDIP** TOP MARK AAAB -- -- -- AAF AAAB -- -- --
0.029" (0.74mm)
TRANSISTOR COUNT: 17 SUBSTRATE CONNECTED TO V+
*Contact factory for dice specifications. **Contact factory for availability.
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.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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