Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - analogue switches uMAX 8

General Description

The MAX4575/MAX4576/MAX4577 are low-voltage,

high electrostatic discharge (ESD)-protected, dual sin-

gle-pole/single-throw (SPST) analog switches. The nor-

mally closed (NO) and normally open (NC) pins are

protected against ±15kV ESD without latchup or dam-

age. Each switch can handle Rail-to-Rail

analog sig-

nals. Off-leakage current is 0.5nA at +25°C. These

analog switches are suitable for low-distortion audio

applications and are the preferred solution over

mechanical relays in automated test equipment or

applications where current switching is required. They

have low power requirements (0.5µW), require less

board space, and are more reliable than mechanical

relays. Each device is controlled by TTL/CMOS input

voltage levels and is bilateral.

These switches feature guaranteed operation from a

single supply of +2V to +12V, making them ideal for

use in battery-powered applications. On-resistance is

70Ω (max), matched between switches to 0.5Ω (typ)

and flat (2Ω typ) over the specified signal range.

The MAX4575 has two NO switches, the MAX4576 has

two NC switches, and the MAX4577 has one NO and

one NC switch. These devices are available in 8-pin

µMAX and SO packages.

Applications

Battery-Powered Systems

Audio and Video Signal Routing

Low-Voltage Data-Acquisition Systems

Sample-and-Hold Circuits

Communications Circuits

Relay Replacement

____________________________Features

♦ ESD-Protected NO/NC Pins

±15kV (Human Body Model)

±15kV (IEC 1000-4-2 Air-Gap Discharge)

±8kV (IEC 1000-4-2 Contact Discharge)

♦ Pin Compatible with MAX4541/MAX4542/MAX4543

♦ Guaranteed On-Resistance

70Ω (max) at +5V

150Ω (max) at +3V

♦ On-Resistance Flatness

2Ω (typ) at +5V

6Ω (typ) at +3V

♦ On-Resistance Matching

0.5Ω (typ) at +5V

0.6Ω (typ) at +3V

♦ Guaranteed 0.5nA Leakage Current at T

= +25°C

♦ +2V to +12V Single-Supply Voltage

♦ TTL/CMOS-Logic Compatible

♦ Low Distortion: 0.015%

♦ -3dB Bandwidth >300MHz

♦ Rail-to-Rail Signal Range

MAX4575/MAX4576/MAX4577

±15kV ESD-Protected, Low-Voltage, Dual, SPST,

CMOS Analog Switches

________________________________________________________________ Maxim Integrated Products 1

19-1762; Rev 0; 7/00

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

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

Ordering Information

PART TEMP. RANGE PIN-PACKAGE

MAX4575 EUA -40°C to +85°C 8 µMAX

MAX4575ESA -40°C to +85°C 8 SO

MAX4576 EUA -40°C to +85°C 8 µMAX

MAX4576ESA -40°C to +85°C 8 SO

MAX4577 EUA -40°C to +85°C 8 µMAX

MAX4577ESA -40°C to +85°C 8 SO

TOP VIEW

SWITCHES SHOWN FOR LOGIC "0" INPUT

SO/µMAX

MAX4575

LOGIC SWITCH

OFF

V+

IN1

COM2

NO2

GND

IN2

COM1

NO1

Pin Configurations/

Functional Diagrams/Truth Tables

Pin Configurations/Functional Diagrams/Truth Tables

continued at end of data sheet.

Summary of content (12 pages)

PAGE 1
9-1762; Rev 0; 7/00 ±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches These switches feature guaranteed operation from a single supply of +2V to +12V, making them ideal for use in battery-powered applications. On-resistance is 70Ω (max), matched between switches to 0.5Ω (typ) and flat (2Ω typ) over the specified signal range. The MAX4575 has two NO switches, the MAX4576 has two NC switches, and the MAX4577 has one NO and one NC switch.
PAGE 2
MAX4575/MAX4576/MAX4577 ±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches ABSOLUTE MAXIMUM RATINGS V+ to GND ..............................................................-0.3V to +13V IN_, COM_, NO_, NC_ to GND (Note 1).......-0.3V to (V+ + 0.3V) Continuous Current (NO_, NC_, COM).............................±10mA Peak Current (NO_, NC_, COM_; pulsed at 1ms 10% duty cycle) ................................................................................
PAGE 3
±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches (V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at V+ = +5V, TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0.8 V 1 µA LOGIC INPUT IN_ Input High VIH IN_ Input Low VIL Logic Input Leakage IIN 2.
PAGE 4
MAX4575/MAX4576/MAX4577 ±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches ELECTRICAL CHARACTERISTICS—SINGLE +3V SUPPLY (V+ = +2.7V to +3.6V, VIH = 2.0V, VIL = 0.6V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V ANALOG SWITCH Input Voltage Range On-Resistance On-Resistance Match Between Channels (Notes 3, 8) On-Resistance Flatness (Notes 4, 8) VCOM_, VNO_, VNC_ RON 0 V+ = 2.
PAGE 5
±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches ON-RESISTANCE vs. VCOM AND SUPPLY VOLTAGE 40 V+ = 2.5V 100 RON (Ω) RON (Ω) 120 V+ = 3.3V V+ = 5V 80 60 30 TA = +85°C TA = +25°C TA = -40°C 20 MAX4575-03 50 LEAKAGE CURRENT (pA) V+ = 1.8V 140 1000 MAX4575-02 160 60 MAX4575-01 180 ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE ON-RESISTANCE vs. VCOM AND TEMPERATURE 100 ON OFF 10 40 10 20 0 -40 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.
PAGE 6
Typical Operating Characteristics (continued) (V+ = 5V, TA = +25°C, unless otherwise specified.) TOTAL HARMONIC DISTORTION + NOISE vs. FREQUENCY FREQUENCY RESPONSE 0 MAX4575-11 0.016 MAX4575-10 20 0.014 0.012 -20 ON-LOSS -40 THD + N (%) LOSS (dB) MAX4575/MAX4576/MAX4577 ±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches OFF-LOSS -60 -80 0.010 0.008 0.006 0.004 CROSSTALK -100 0.002 -120 V+ = 5V 600Ω IN AND OUT 0 0.01 0.
PAGE 7
±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches V+ SWITCH OUTPUT V+ SWITCH INPUT NO_/NC_ COM V COM VOUT RL 300Ω IN LOGIC INPUT V+ 50% 0 CL 35pF t OFF GND LOGIC INPUT t R < 20ns t F < 20ns VOUT SWITCH OUTPUT 0 0.9 x V0UT 0.9 x VOUT t ON CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VCOM RL + RON ( ) Figure 1. Switching Time switches is independently controlled by a TTL/CMOSlevel-compatible digital input.
PAGE 8
MAX4575/MAX4576/MAX4577 ±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches MAX4575 MAX4576 MAX4577 V+ ∆VOUT V+ RGEN VOUT COM NO_/NC_ VOUT CL V GEN GND IN IN ON OFF OFF Q = (∆V OUT )(C L ) VIN Figure 3. Charge Injection MAX4575 MAX4576 MAX4577 V+ 10nF SIGNAL GENERATOR 0dBm V+ COM IN CAPACITANCE METER VIL OR VIH NO_/NC_ f = 1MHz 10nF 0 OR 2.4V V+ COM1 NO1/NC1 IN2 IN1 NO2/NC2 ANALYZER MAX4575 MAX4576 MAX4577 V+ COM2 50Ω 0 OR 2.4V NC GND GND RL Figure 4.
PAGE 9
±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches ESD Test Conditions Contact Maxim Integrated Products for a reliability report that documents test setup, methodology, and results. Human Body Model Figure 6 shows the Human Body Model and Figure 7 shows the waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which can be discharged into the test device through a 1.5kΩ resistor.
PAGE 10
RC 1MΩ CHARGE-CURRENT LIMIT RESISTOR RD 1500Ω IP 100% 90% DISCHARGE RESISTANCE Ir PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) AMPERES HIGHVOLTAGE DC SOURCE Cs 100pF STORAGE CAPACITOR DEVICE UNDER TEST 36.8% 10% 0 0 CHARGE-CURRENT LIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 150pF RD 330Ω I 100% 90% DISCHARGE RESISTANCE STORAGE CAPACITOR tDL CURRENT WAVEFORM Figure 7. Human Body Model Current Waveform Figure 6.
PAGE 11
±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches TOP VIEW MAX4577 MAX4576 NC1 1 8 V+ NO1 1 8 V+ COM1 2 7 IN1 COM1 2 7 IN1 IN2 3 6 COM2 IN2 3 6 COM2 GND 4 5 NC2 GND 4 5 NC2 SO/ µMAX SO/ µMAX MAX4576 LOGIC SWITCH 0 1 ON OFF LOGIC MAX4577 SWITCH 1 SWITCH 2 0 1 OFF ON ON OFF SWITCHES SHOWN FOR LOGIC "0" INPUT 8LUMAXD.
PAGE 12
±15kV ESD-Protected, Low-Voltage, Dual, SPST, CMOS Analog Switches SOICN.EPS MAX4575/MAX4576/MAX4577 Package Information (continued) 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.