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MAX4661CPE+中文资料

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General Description

The MAX4661/MAX4662/MAX4663 quad analog switches feature low on-resistance of 2.5?max. On-resistance is matched between switches to 0.5?max and is flat (0.5?max) over the specified signal range. Each switch can handle Rail-to-Rail ?analog signals. Off-leakage current is only 5nA max at T A = +85°C. These analog switches are ideal in low-distortion applications and are the preferred solution over mechanical relays in automatic test equipment or applications where current switching is required. They have lower power require-ments, use less board space, and are more reliable than mechanical relays.

The MAX4661 has four normally closed (NC) switches,and the MAX4662 has four normally open (NO) switches.The MAX4663 has two NC and two NO switches, and fea-tures guaranteed break-before-make switching.

These devices operate from a single +4.5V to +36V sup-ply or from dual ±4.5V to ±20V supplies. A separate logic supply pin guarantees TTL/CMOS-logic compatibility when operating across the entire supply voltage range.

Applications

Reed Relay Replacement Avionics Test Equipment

ADC Systems

Communication Systems Sample-and-Hold Circuits PBX, PABX Systems Data Acquisition Systems

Audio-Signal Routing

Features

o Low On-Resistance (2.5?max)

o Guaranteed R ON Match Between Channels (0.5?max)o Guaranteed R ON Flatness over Specified Signal Range (0.5?max)o Rail-to-Rail Signal Handling

o Guaranteed Break-Before-Make (MAX4663)o > 2kV ESD Protection per Method 3015.7o +4.5V to +36V Single-Supply Operation ±4.5V to ±20V Dual-Supply Operation o TTL/CMOS-Compatible Control Inputs

MAX4661/MAX4662/MAX4663

2.5?, Quad, SPST,

CMOS Analog Switches

________________________________________________________________Maxim Integrated Products

19-1516; Rev 0; 7/99

Ordering Information continued at end of data sheet.

Ordering Information

Pin Configurations/Functional Diagrams/Truth Tables

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

M A X 4661/M A X 4662/M A X 4663

2.5?, Quad, SPST,

CMOS Analog Switches 2_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

V+ to GND..............................................................-0.3V to +44V V- to GND..............................................................+0.3V to -44V V+ to V-...................................................................-0.3V to +44V V L to GND.......................................(GND - 0.3V) to (V+ + 0.3V)All Other Pins to GND (Note 1).............(V- - 0.3V) to (V+ + 0.3V) Continuous Current (COM_, NO_, NC_) ........................±200mA Peak Current (COM_, NO_, NC_)

(pulsed at 1ms, 10% duty cycle)................................±300mA

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

SSOP (derate 7.1mW/°C above +70°C).......................571mW Wide SO (derate 9.52mW/°C above +70°C).................762mW Plastic DIP (derate 10.53mW/°C above +70°C)...........842mW Operating Temperature Ranges

MAX466_C_E ......................................................0°C to +70°C MAX466_E_E....................................................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10sec).............................+300°C

ELECTRICAL CHARACTERISTICS—Dual Supplies

(V+ = +15V, V- = -15V, V L = +5V, V IN_H = +2.4V, V IN_L = +0.8V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 2)

Note 1: Signals on NC_, NO_, COM_, or IN_ exceeding V+ or V- will be clamped by internal diodes. Limit forward diode current to maximum

current rating.

ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)

MAX4661/MAX4662/MAX46632.5?, Quad, SPST, CMOS Analog Switches (V+ = +15V, V- = -15V, V L= +5V, V IN_H= +2.4V, V IN_L= +0.8V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at

T A= +25°C.) (Note 2)

_______________________________________________________________________________________3

M A X 4661/M A X 4662/M A X 4663

2.5?, Quad, SPST,

CMOS Analog Switches 4_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—Single Supply

(V+ = +12V, V- = 0, V L = +5V, V IN_H = +2.4V, V IN_L = +0.8V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 2)

MAX4661/MAX4662/MAX4663

2.5?, Quad, SPST,

CMOS Analog Switches

_______________________________________________________________________________________5

ELECTRICAL CHARACTERISTICS—Single Supply (continued)

(V+ = +12V, V- = 0, V L = +5V, V IN_H = +2.4V, V IN_L = +0.8V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 2)

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:Guaranteed by design.

Note 4:?R ON = R ON(MAX)- R ON(MIN).

Note 5:Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the

specified analog signal range.

Note 6:Leakage parameters are 100% tested at maximum-rated hot temperature and guaranteed by correlation at +25°C.Note 7:Off-isolation = 20log 10[V COM / (V NC or V NO )], V COM = output, V NC or V NO = input to off switch.Note 8:Between any two switches.

Note 9:Leakage testing at single supply is guaranteed by testing with dual supplies.

M A X 4661/M A X 4662/M A X 4663

2.5?, Quad, SPST,

CMOS Analog Switches 6_______________________________________________________________________________________

Typical Operating Characteristics

(T A = +25°C, unless otherwise noted.)

01.00.52.01.53.02.53.54.54.05.0-20

-10

-5

-15

ON-RESISTANCE vs. V COM

(DUAL SUPPLIES)

V COM (V)

R O N (?)

0.500.251.000.751.501.251.752.252.002.50

-10

-5

-15

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

V COM (V)

R O N (?)

03214

5678910

12162024

106

141822ON-RESISTANCE vs. V COM

(SINGLE SUPPLY)

V COM (V)

R O N (?)

01.501.000.502.002.503.503.004.0002

9101112

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

V COM (V)

R O N (?)0.1m

0.01

1m 1010.11k 10k 100100k -40

-20

100

ON/OFF-LEAKAGE CURRENT

vs. TEMPERATURE

TEMPERATURE (°C)

L E A K A G E (p A )

-200

-100200100300

400-20-5

0-10-15

CHARGE INJECTION

vs. V COM

V COM (V)

Q (p C )

0.10.010.001

100

10110k 100k 1k -40

-20

100

POWER-SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (°C)

I +, I - (n A )

-10-100

0.1

100

FREQUENCY RESPONSE

-70-90-30-500-60-80-20-40

FREQUENCY (MHz)

L O S S (d B )

90180-720-450-630

-90-270-360-540-0

-180P H A S E (d e g r e e s )

MAX4661/MAX4662/MAX4663

2.5?, Quad, SPST,

CMOS Analog Switches

_______________________________________________________________________________________

Pin Description

Applications Information

Overvoltage Protection

Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maxi-mum ratings because stresses beyond the listed rat-ings can cause permanent damage to the devices.Always sequence V+ on first, then V-, followed by the logic inputs, NO, or COM. If power-supply sequencing is not possible, add two small-signal diodes (D1, D2) in series with the supply pins and a Schottky diode between V+ and V L for overvoltage protection (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.

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, how-ever, it behaves like a capacitor and off-isolation decreases with increasing frequency. (Above 300MHz,

the switch actually passes more signal turned off than turned on.) This effect is more pronounced with higher source and load impedances.

Above 5MHz, circuit board layout becomes critical and it becomes difficult to characterize the response of the switch independent of the circuit. The graphs shown in the Typical Operating Characteristics were taken using a 50?source and load connected with BNC connec-tors to a circuit board deemed “average”; that is,designed with isolation in mind, but not using stripline or other special RF circuit techniques. For critical appli-cations above 5MHz, use the MAX440, MAX441, and MAX442, which are fully characterized up to 160MHz.

Figure 1. Overvoltage Protection Using External Blocking Diodes

M A X 4661/M A X 4662/M A X 4663

2.5?, Quad, SPST,

CMOS Analog Switches 8_______________________________________________________________________________________

Figure 3. Break-Before-Make Interval (MAX4663 only)

Figure 2. Switching-Time Test Circuit

Figure 4. Charge-Injection Test Circuit Figure 5. Off-Isolation Test Circuit

Figure 6. Crosstalk Test Circuit

MAX4661/MAX4662/MAX46632.5?, Quad, SPST, CMOS Analog Switches

_______________________________________________________________________________________9

M A X 4661/M A X 4662/M A X 4663

2.5?, Quad, SPST,

CMOS Analog Switches 10______________________________________________________________________________________

Figure 7. Switch Off-Capacitance Test Circuit

Figure 8. Switch On-Capacitance Test Circuit

Chip Information

TRANSISTOR COUNT: 108

Ordering Information (continued)

Package Information

MAX4661/MAX4662/MAX46632.5?, Quad, SPST, CMOS Analog Switches

M A X 4661/M A X 4662/M A X 46663

2.5?, Quad, SPST,

CMOS Analog Switches 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?1999 Maxim Integrated Products

Printed USA

is a registered trademark of Maxim Integrated Products.

Package Information (continued)