MAX4503CUK-T中文资料
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General Description
The MAX4503/MAX4504 are low-voltage, dual-supply,single-pole/single-throw (SPST), CMOS analog switch-es. The MAX4503 is normally open (NO). The MAX4504is normally closed (NC).
These CMOS switches can operate continuously with dual supplies between ±1.V and ±6V. Each switch can handle rail-to-rail analog signals. The off-leakage cur-rent is only 1nA at +25°C or 10nA at +85°C.
The digital input is CMOS-logic compatible when using ±5V supplies. A unique logic input architecture allows this even though the parts have no ground pin.
For single-supply operation, use the MAX4501/MAX4502, which are pin-for-pin equivalents.
________________________Applications
Battery-Operated Equipment Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits Cellular Phones PCMCIA Cards Modems
____________________________Features
o Available in SOT23-5 Package
o Dual-Supply Operation from ±1V to ±6V o Guaranteed On-Resistance:
250?with ±5V Supplies
o Guaranteed Low Off-Leakage Currents:
1nA at +25°C 10nA at +85°C
o Guaranteed Low On-Leakage Currents:
2nA at +25°C 20nA at +85°C
o Guaranteed Low Charge Injection: 10pC Max o Fast Switching Speed: t ON = 150ns, t OFF = 100ns o CMOS-Logic Compatible Input
MAX4503/MAX4504
Low-Voltage, Dual-Supply, SPST,
CMOS Analog Switches
________________________________________________________________Maxim Integrated Products 1
___________________________________________________________Pin Configurations
19-1064; Rev 1; 1/07
______________Ordering Information
Ordering Information continued at end of data sheet.*Contact factory for dice specifications.**Contact factory for availability.
M A X 4503/M A X 4504
Low-Voltage, Dual-Supply, SPST,CMOS Analog Switches 2_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS —±5V Supply
(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, V INH =3.5V, V INL = 1.5V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
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.
Note 1:Voltages on any signal terminal exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to maximum
current rating.
(Voltages Referenced to V-)
V+..............................................................................-0.3V, +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 Continuous Power Dissipation (T A = +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)...727mW 8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
5-Pin SOT23-5 (derate 7.1mW/°C above +70°C)........571mW 8-Pin CERDIP (derate 8.00mW/°C above +70°C)........640mW Operating Temperature Ranges
MAX4503C_ _/MAX4504C_ _.............................0°C to +70°C MAX4503E_ _/MAX4504E_ _...........................-40°C to +85°C MAX4503MJA/MAX4504MJA........................-55°C to +125°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10sec).............................+300°C
MAX4503/MAX4504
Low-Voltage, Dual-Supply, SPST,
CMOS Analog Switches
_______________________________________________________________________________________3
ELECTRICAL CHARACTERISTICS —±5V Supply (continued)
(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, V INH = 3.5V, V INL = 1.5V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
M A X 4503/M A X 4504
Low-Voltage, Dual-Supply, SPST,CMOS Analog Switches 4_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS —±3V Supply
(V+ = +2.7V to +3.3V, V- = -2.7V to -3.3V, V INH = 2.4V, V INL = 0.8V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
Note 2:The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.Note 4:Guaranteed, not production tested.
Note 3:Leakage parameters are 100% tested at maximum rated hot operating temperature, and guaranteed by correlation at +25°C.Note 5:
SOT packaged parts are 100% tested at +25°C. Limits at maximum and minimum rated temperature are guaranteed by design and correlation limits at +25°C.
MAX4503/MAX4504
Low-Voltage, Dual-Supply, SPST,
CMOS Analog Switches
_______________________________________________________________________________________
5
200180160140
120
100806040200
-5-2-1
1
2
3
-4-34
5
ON-RESISTANCE
vs. V COM AND TEMPERATURE
V COM (V)
R O N (?)
1000
10
-5-20
4
3
2
1
-1
-4-35
ON-RESISTANCE vs. V COM
V COM (V)
R O N (?)
100
5
43
210-1
-2-3-4-5
-5-2-1
1
2
3
-4-34
5
CHARGE INJECTION vs. V COM
V COM (V)
Q (p C )
10
1
0.01
0.001
0.0001
0.00001
-600
20406080100-40-20120140
LEAKAGE CURRENT vs. TEMPERATURE
TEMPERATURE (°C)
L E A K A G E C U R R E N T (n A )
3.0
2.52.01.01.500.5-0.5
-1.0
2
3
4
1
5
LOGIC THRESHOLD vs. V+ AND V-M A X 4503-07
V+, V- VOLTAGE (V)
L O G I C T H R E S H O L D (V )
0-10-20-30-40-50-60-70-80-90-100-110
-120
6050403020100
-10-20-30
-40-50-60
0.00010.1
110
0.0010.01
1001000
FREQUENCY RESPONSE (50? IN AND OUT)
FREQUENCY (MHz)
L O S S (d B )
P H A S E (D E G R E E S )
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
M A X 4503-06
FREQUENCY (Hz)
T O T A L H A R M O N I C D I S T O R T I O N (%)
1000.01
10
100
100010,000100,0000.1
1
10
__________________________________________Typical Operating Characteristics
(V+ = +5V, V- = -5V, T A = +25°C, unless otherwise noted.)
__________Applications Information
Power-Supply Considerations
The MAX4503/MAX4504’s construction is typical of most CMOS analog switches, except they have only two supply pins: V+ and V-. These voltages set the analog voltage limits of the switch. Reverse ESD-pro-tection diodes are internally connected between IN and each analog signal pin and both V+ and V-. If any ana-log signal exceeds V+ or V-, one of these diodes will conduct. During normal operation, these (and other)reverse-biased ESD diodes leak, forming the only cur-rent drawn from V-. Additional current flows through V+from the logic-level translator.
Virtually all the analog leakage current is provided through 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 V- 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 V-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 ter-minal. This is why both sides of a given switch can show leakage currents of either the same or opposite polarity.
There is no connection between the analog signal paths and V+ or V-.
V+ and V- also power the internal logic and logic-level translators. Since there is no ground pin, the logic input
has a low-current pull-up to V+ and the logic limit is set by an internal comparator referenced to V+. The logic-level translators convert the logic levels to switched V+and V- signals, to drive the gates of the analog signals.This drive signal is the only connection between the logic supplies (and signals) and the analog https://www.sodocs.net/doc/77793960.html,, NO, and NC pins have ESD-protection diodes to V+ and V-.
The logic is CMOS compatible when V+ is +5V. CMOS compatibility is maintained with all V+ values, assuming that the CMOS logic is operated from the same V+ sup-ply. Since the MAX4503/MAX4504 have no ground pins, the logic levels are internally referenced to V+.Do not connect the M AX4503/M AX4504 V+ to +3V and 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 50MHz. (see Typical Operating Characteristics ).Above 20MHz the on-response has several minor peaks which are highly layout dependent. The problem is not in turning the switch on, but in turning it off. The off-state switch acts like a capacitor, and passes higher frequencies with less attenuation. At 10MHz, off isola-tion is about -65dB in 50?systems, becoming worse (approximately 20dB per decade) as frequency increases. Higher circuit impedances also make off iso-lation worse.
M A X 4503/M A X 4504
Low-Voltage, Dual-Supply, SPST,CMOS Analog Switches 6
_______________________________________________________________________________________
______________________________________________________________Pin Description
Note:NO, NC, and COM pins are identical and interchangeable. Either may be considered as an input or output; signals pass
equally well in both directions.
MAX4503/MAX4504
Low-Voltage, Dual-Supply, SPST,
CMOS Analog Switches
_______________________________________________________________________________________7
______________________________________________Test Circuits/Timing Diagrams
Figure 1. Switching Times
Figure 2. Charge Injection
M A X 4503/M A X 4504
Low-Voltage, Dual-Supply, SPST,CMOS Analog Switches 8_______________________________________________________________________________________
Figure 3. Off Isolation and On Loss
Figure 4. NO, NC, and COM Capacitance
___________________Chip Topography
TRANSISTOR COUNT: 36
SUBSTRATE IS INTERNALLY CONNECTED TO V+
_Ordering Information (continued)
*Contact factory for dice specifications.**Contact factory for availability.
_________________________________Test Circuits/Timing Diagrams (continued)
MAX4503/MAX4504
Low-Voltage, Dual-Supply, SPST,
CMOS Analog Switches
_______________________________________________________________________________________9
__________________________________________________Tape-and-Reel Information
M A X 4503/M A X 4504
Low-Voltage, Dual-Supply, SPST,CMOS Analog Switches 10______________________________________________________________________________________
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 https://www.sodocs.net/doc/77793960.html,/packages .)
S O T -23 5L .E P
S
MAX4503/MAX4504
Low Voltage, Dual-Supply, SPST,
CMOS Analog Switches
______________________________________________________________________________________11
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 https://www.sodocs.net/doc/77793960.html,/packages .)
M A X 4503/M A X 4504
Low-Voltage, Dual-Supply, SPST,CMOS Analog Switches 12______________________________________________________________________________________
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 https://www.sodocs.net/doc/77793960.html,/packages .)
P D I P N .E P
S
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 https://www.sodocs.net/doc/77793960.html,/packages.)
Revision History
Changes made at Rev 1: 1, 4, 10, 11, 12
Maxim cannot assume responsibility f or 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.
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