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MAX4522EEE中文资料

General Description

The MAX4521/MAX4522/MAX4523 are quad, low-volt-age, single-pole/single-throw (SPST) analog switches.On-resistance (100Ωmax) is matched between switch-es to 4Ωmax, and is flat (12Ωmax) over the specified signal range. Each switch can handle rail-to-rail analog signals. The off-leakage current is only 1nA at +25°C and 10nA at +85°C.

The MAX4521 has four normally closed (NC) switches,and the MAX4522 has four normally open (NO) switch-es. The MAX4523 has two NC switches and two NO switches.

These CMOS switches can operate with dual power supplies ranging from ±2V to ±6V or a single supply between +2V and +12V. They are fully specified for sin-gle +2.7V operation.

All digital inputs have +0.8V and +2.4V logic thresh-olds, ensuring TTL/CMOS-logic compatibility when using ±5V or a single +5V supply.

Applications

Battery-Operated Equipment Data Acquisition Test Equipment Avionics

Audio Signal Routing Networking

Features

?+2V to +12V Single Supply ±2V to ±6V Dual Supplies

?100ΩSignal Paths with ±5V Supplies ?Low Power Consumption, <1μW ?4 Separately Controlled SPST Switches ?Rail-to-Rail Signal Handling

?Pin Compatible with Industry-Standard DG211/DG212/DG213?>2kV ESD Protection per Method 3015.7?TTL/CMOS-Compatible Inputs with ±5V or Single +5V Supply

MAX4521/MAX4522/MAX4523

Quad, Low-Voltage, SPST Analog Switches

________________________________________________________________Maxim Integrated Products

Pin Configurations/Functional Diagrams/Truth Tables

19-1136; Rev 6; 7/07

Ordering Information continued at end of data sheet.*Contact factory for dice specifications.**EP = Exposed pad.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at https://www.wendangku.net/doc/2c2717853.html,.

M A X 4521/M A X 4522/M A X 4523

Quad, Low-Voltage, SPST Analog Switches 2_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—Dual Supplies

(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)

Note 1:Signals on NC_, NO_, COM_, or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to maxi-mum current rating.

Note 2:All leads are soldered or welded to PC boards.

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.

Voltages Referenced to GND

V+.....................................................................-0.3V to +13.0V V-.....................................................................-13.0V to +0.3V V+ to V-............................................................-0.3V to +13.0V All Other Pins (Note 1)..........................(V- - 0.3V) to (V+ + 0.3V)Continuous Current into Any Terminal..............................±10mA Peak Current into Any Terminal

(pulsed at 1ms,10% duty cycle)...................................±20mA ESD per Method 3015.7.. (2000)

Continuous Power Dissipation (T A = +70°C) (Note 2)

Plastic DIP (derate 10.53mW/°C above +70°C)..........842mW Narrow SO (derate 8.70mW/°C above +70°C)............696mW QSOP (derate 9.52mW/°C above +70°C)....................762mW CERDIP (derate 10.00mW/°C above +70°C)...............800mW TSSOP (derate 6.7mW/°C above +70°C)....................457mW QFN (derate 16.9mW/°C above +70°C)....................1349mW Operating Temperature Ranges

MAX452_C_E......................................................0°C to +70°C MAX452_E_E...................................................-40°C to +85°C MAX452_MJE ................................................-55°C to +125°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°C

MAX4521/MAX4522/MAX4523

Quad, Low-Voltage, SPST Analog Switches

_______________________________________________________________________________________3

ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)

(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)

M A X 4521/M A X 4522/M A X 4523

Quad, Low-Voltage, SPST Analog Switches 4_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—Single +5V Supply

(V+ = +4.5V to +5.5V, V- = 0V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)

MAX4521/MAX4522/MAX4523

Quad, Low-Voltage, SPST Analog Switches

_______________________________________________________________________________________5

Note 3:The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.Note 4:Guaranteed by design.

Note 5:ΔR ON = ΔR ON(MAX)- ΔR ON(MIN).

Note 6:Resistance flatness is defined as the difference between the maximum and minimum on-resistance values, as measured

over the specified analog signal range.

Note 7:Leakage parameters are 100% tested at maximum rated temperature, and guaranteed by correlation at T A = +25°C.Note 8:Off-Isolation = 20log 10[ V COM_/ (V NC_or V NO_) ], V COM_= output, V NC_or V NO_= input to off switch.Note 9:Between any two switches.

Note 10:Leakage testing for single-supply operation is guaranteed by testing with dual supplies.

ELECTRICAL CHARACTERISTICS—Single +3V Supply

(V+ = +2.7V to +3.6V, V- = 0V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)

M A X 4521/M A X 4522/M A X 4523

Quad, Low-Voltage, SPST Analog Switches 6_______________________________________________________________________________________

Typical Operating Characteristics

(V+ = +5V, V- = -5V, GND = 0, T A = +25°C, unless otherwise noted.)

1000

-5-31

ON-RESISTANCE vs. V COM

(DUAL SUPPLIES)

2080

V COM (V)

R O N (Ω)

-1

-4-22

60160180140120408030

-5-31

ON-RESISTANCE vs. V COM AND TEMPERATURE (DUAL SUPPLIES)

V COM (V)R O N (Ω)

-1

-4-22

601101009050

250

ON-RESISTANCE vs. V COM

(SINGLE SUPPLY)

50200V COM (V)

R O N (Ω)

150350

30010016060

ON-RESISTANCE vs. V COM AND TEMPERATURE (SINGLE SUPPLY)

140V COM (V)

R O N (Ω)

1202001801002000

TURN-ON/OFF TIME vs. SUPPLY VOLTAGE

40160t ON

t OFF

M A X 4521/2/3-T O C 07

t O N , t O F F (n s )

V+ (V)

103

7115

12080180201401006010n 0.1p

-55

-25

ON- AND OFF-LEAKAGE CURRENT

vs. TEMPERATURE

1n TEMPERATURE (°C)

L E A K A G E C U R R E N T (

A )

100125

100p

10p

-2

-5-31

CHARGE INJECTION

vs. V COM

1V COM (V)

Q (p C )

-1

-4-22

-1

1000-55

-25

TURN-ON/OFF TIME vs. TEMPERATURE

2080t ON

t OFF

M A X 4521/2/3-T O C 08

TEMPERATURE (°C)

t O N , t O F F (n s )

125

10060409010

7050301

0.00001

-55

-25

POWER-SUPPLY CURRENT vs. TEMPERATURE

0.0001

0.1I+

I-

M A X 4521/2/3-T O C 09

TEMPERATURE (°C)

I +, I - (μA )

125

1000.01

0.001

MAX4521/MAX4522/MAX4523

Quad, Low-Voltage, SPST Analog Switches

_______________________________________________________________________________________

100

0.001

1k 100

100k

10k

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

0.01

FREQUENCY (Hz)

T H D (%)

0.1

100-10-90

0.01

0.1

100300

FREQUENCY RESPONSE

-80

-70FREQUENCY (MHz)

L O S S (d B )

P H A S E (D E G R E E S )

-50-60

-40-20-3050-40

-35-30-20-25

-15-5-10

INSERTION LOSS

50Ω IN/OUT

OFF-ISOLATION

ON-PHASE

Typical Operating Characteristics (continued)

(V+ = +5V, V- = -5V, GND = 0, T A = +25°C, unless otherwise noted.)

equally well in either direction.

M A X 4521/M A X 4522/M A X 4523

Applications Information

Power-Supply Considerations

Overview

The MAX4521/MAX4522/MAX4523 construction is typi-cal of most CMOS analog switches. They have three supply pins: V+, V-, and GND. V+ and V- are used to drive the internal CMOS switches, and they set the lim-its of the analog voltage on any switch. Reverse ESD-protection diodes are internally connected between each analog-signal pin and both V+ and V-. If any ana-log signal exceeds V+ or V-, one of these diodes con-ducts. During normal operation these reverse-biased ESD diodes leak, forming the only current drawn from V+ or V-.

Virtually all the analog leakage current is through the ESD diodes. Although the ESD diodes on a given sig-nal 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 vary as the signal varies. The difference in the two diode leakages from the signal path to the V+ and V- pins constitutes the analog-signal-path leakage cur-rent. All analog leakage current flows to the supply ter-minals, not to the other switch terminal. This explains how 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 GND. The analog-signal paths consist of an N-channel and P-channel MOSFET with their sources and drains paralleled, and their gates driven out of phase to V+ and V- by the logic-level translators.V+ and G ND power the internal logic and logic-level translators, and set the input logic thresholds. The logic-level translators convert the logic levels to switched V+ and V- signals to drive the gates of the analog switches. This drive signal is the only connec-tion between the logic supplies and the analog sup-plies. V+ and V- have ESD-protection diodes to G ND.The logic-level inputs and output have ESD protection to V+ and to GND.

Increasing V- has no effect on the logic-level thresh-olds, but it does increase the drive to the P-channel switches, reducing their on-resistance. V- also sets the negative limit of the analog-signal voltage.

The logic-level thresholds are CMOS/TTL compatible when V+ = +5V. The threshold increases slightly as V+is raised, and when V+ reaches +12V, the level thresh-old is about 3.1V. This is above the TTL output high-level minimum of 2.8V, but still compatible with CMOS outputs.

Bipolar Supplies

The MAX4521/MAX4522/MAX4523 operate with bipolar supplies between ±2V and ±6V. The V+ and V- sup-plies need not be symmetrical, but their sum cannot exceed the absolute maximum rating of 13.0V. Do not connect the MAX4521/MAX4522/MAX4523 V+ to +3V,and then connect the logic-level-input pins to TTL logic-level signals. TTL logic-level outputs in excess of the absolute maximum ratings can damage the part and/or external circuits.

Caution:The absolute maximum V+ to V- differential voltage is 13.0V. Typical ±6V or 12V supplies with ±10% tolerances can be as high as 13.2V. This voltage can damage the MAX4521/MAX4522/MAX4523. Even ±5% tolerance supplies may have overshoot or noise spikes that exceed 13.0V.

Single Supply

The MAX4521/MAX4522/MAX4523 operate from a single supply between +2V and +12V when V- is con-nected to GND. All of the bipolar precautions must be observed.

High-Frequency Performance

In 50Ωsystems, signal response is reasonably flat up to 50MHz (see T ypical Operating Characteristics ).Above 20MHz, the on-response has several minor peaks that are highly layout dependent. The problem with high-frequency operation is not turning the switch on, but turning it off. The off-state switch acts like a capacitor and passes higher frequencies with less attenuation. At 10MHz, off-isolation is about -52dB in 50Ωsystems, becoming worse (approximately 20dB per decade) as frequency increases. Higher circuit impedances also make off-isolation worse. Adjacent channel attenuation is about 3dB above that of a bare IC socket, and is due entirely to capacitive coupling.

Quad, Low-Voltage, SPST Analog Switches 8_______________________________________________________________________________________

MAX4521/MAX4522/MAX4523

Quad, Low-Voltage, SPST Analog Switches

_______________________________________________________________________________________

Figure 3. Charge Injection

Figure 1. Switching Time

Figure 2. Break-Before-Make Interval (MAX4523 only)

Test Circuits/Timing Diagrams

M A X 4521/M A X 4522/M A X 4523

Quad, Low-Voltage, SPST Analog Switches 10______________________________________________________________________________________

Figure 5. Crosstalk

Figure 4. Off-Isolation

Test Circuits/Timing Diagrams (continued)

Figure 7. Channel On-Capacitance

Figure 6. Channel Off-Capacitance

MAX4521/MAX4522/MAX4523

Quad, Low-Voltage, SPST Analog Switches

______________________________________________________________________________________11

*Contact factory for dice specifications.**EP = Exposed pad.

***Contact factory for availability.

Chip Topography

COM4

IN3

COM3

IN4

SUBSTRATE CONNECTED TO V+

A B C D

MAX4521MAX4522MAX4523PIN NAME NAME NAME PIN PIN NC1NC4NC3NC2

NO1NO4NO3NO2

NO1NO4NC3NC2

Ordering Information (continued)

M A X 4521/M A X 4522/M A X 4523

Quad, Low-Voltage, SPST Analog Switches 12______________________________________________________________________________________

Pin Configurations

*EP = Exposed Pad, connect EP to V+

MAX4521/MAX4522/MAX4523

Quad, Low-Voltage, SPST 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 https://www.wendangku.net/doc/2c2717853.html,/packages .)

M A X 4521/M A X 4522/M A X 4523

Quad, Low-Voltage, SPST Analog Switches 14______________________________________________________________________________________

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.wendangku.net/doc/2c2717853.html,/packages .)

Quad, Low-Voltage, SPST Analog Switches

MAX4521/MAX4522/MAX4523

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.

15__________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600?2007 Maxim Integrated Products

is a registered trademark of Maxim Integrated Products, Inc.

T S S O P 4.40m m .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.wendangku.net/doc/2c2717853.html,/packages .)

Revision History

Pages changed at Rev 6: 1, 7, 11, 12, 15