Datasheet

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General Description

The MAX4634 fast, low-voltage, 4-channel CMOS ana-

log multiplexer features 4Ω (max) on-resistance (R

It offers R

matching between switches to 0.3Ω (max)

and R

flatness of 1Ω (max) over the specified signal

range. Each switch can handle V+ to GND analog sig-

nals. Off-leakage current is only 0.1nA (max) at +25°C.

The MAX4634 features fast turn-on (t

) and turn-off

OFF

) times of 18ns and 11ns, respectively. All this

comes in the tiny 10-pin µMAX

and 10-pin, 3mm x

3mm, TDFN packages.

This low-voltage multiplexer operates from a +1.8V to

+5.5V single supply. All digital inputs have +0.8V and

+2.4V logic thresholds, ensuring TTL/CMOS-logic com-

patibility with +5V operation.

________________________Applications

Battery-Operated Equipment

Audio and Video Signal Routing

Low-Voltage Data-Acquisition Systems

Sample-and-Hold Circuits

Communications Circuits

Features

♦ Guaranteed R

2.5Ω (typ) with 5V Supply

4.5Ω (typ) with 3V Supply

♦ 0.3Ω (max) Guaranteed R

Match Between

Channels

♦ 1Ω (max) Guaranteed R

Flatness Over Signal

Range

♦ 0.1nA (at +25°C) Guaranteed Low Leakage

Currents

♦ +1.8V to +5.5V Single-Supply Operation

♦ +1.8V Operation

= 30Ω (typ) Overtemperature

= 30ns (typ), t

OFF

= 13ns (typ)

♦ V+ to GND Signal Handling

♦ TTL/CMOS-Logic Compatible

♦ -78dB Crosstalk (at 1MHz)

♦ -80dB Off-Isolation (at 1MHz)

♦ 0.018% Total Harmonic Distortion

MAX4634

Fast, Low-Voltage, 4

4-Channel CMOS Analog Multiplexer

________________________________________________________________

Maxim Integrated Products

µMAX

TOP VIEW

NO2

COM

NO4NO3

GND

NO1

V+EN

MAX4634EUB

X = DON'T CARE

ON SWITCH

NONE

LOGIC

TDFN

NO2

COM

NO4NO3

GND

NO1

V+

*EP = EXPOSED PAD

*EP

MAX4634ETB

LOGIC

Pin Configurations/Functional Diagrams/Truth Table

19-1717; Rev 3; 2/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

PART

TEMP RANGE PIN-PACKAGE

TOP

MARK

MAX4634EUB

-40°C to +85°C

10 µMAX —

MAX4634ETB

-40°C to +85°C

10 TDFN-EP*

(3mm x 3mm)

AAU

EP = Exposed pad.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Summary of content (10 pages)

PAGE 1
9-1717; Rev 3; 2/09 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer Features ♦ Guaranteed RON 2.5Ω (typ) with 5V Supply 4.5Ω (typ) with 3V Supply The MAX4634 fast, low-voltage, 4-channel CMOS analog multiplexer features 4Ω (max) on-resistance (RON). It offers RON matching between switches to 0.3Ω (max) and RON flatness of 1Ω (max) over the specified signal range. Each switch can handle V+ to GND analog signals. Off-leakage current is only 0.1nA (max) at +25°C.
PAGE 2
MAX4634 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) V+ .............................................................................-0.3V to +6V A_, EN, COM, NO_ (Note 1) .........................-0.3V to (V+ + 0.3V) Continuous Current (all other pins) ..................................±20mA Continuous Current (COM, NO_) .....................................±50mA Peak Current (COM, NO_ pulsed at 1ms, 10% duty cycle) .......................
PAGE 3
Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer (V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +5V, TA = +25°C.
PAGE 4
MAX4634 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued) (V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +3V, TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL On-Resistance Flatness (Note 6) RFLAT(ON) NO_ Off-Leakage Current (Note 7) INO_(OFF) COM Off-Leakage Current (Note 7) ICOM(OFF) COM On-Leakage Current (Note 7) ICOM(ON) CONDITIONS MIN V+ = 2.
PAGE 5
Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer (V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +3V, TA = +25°C.
PAGE 6
Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE ON/OFF-ENABLE TIME vs. SUPPLY VOLTAGE CHARGE INJECTION vs. VCOM 0.10 30 25 Q (pC) 0.05 0 tON/tOFF (ns) ICOM(OFF) 1.5 V+ = 3V 1.0 INO_(OFF) 20 tON 15 10 ICOM(ON) -0.05 MAX4634-06 V+ = 5V 2.0 35 MAX4634-05 2.5 MAX4634-04 0.15 LEAKAGE (nA) tOFF 0.5 5 -0.10 0 0 -50 0 50 100 0 TEMPERATURE (°C) 1 3 2 VCOM (V) 4 2.5 3.0 3.5 0.
PAGE 7
Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer +5V D1 PIN µMAX/ TDFN NAME FUNCTION 1 A0 Address Input. See the Truth Table for details. 2 NO1 Normally Open Switch 1 3 GND Ground 4 NO3 Normally Open Switch 3 5 EN Enable Logic Input. See the Truth Table for details. V+ Positive Supply Voltage. Connect to an external power supply. Bypass to GND with a 10µF capacitor placed as close to the pin as possible.
PAGE 8
Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer MAX4634 Test Circuits/Timing Diagrams VEN = VIH + 0.5 V+ VEN 0 V+ EN tR < 5ns tF < 5ns 50% NO1 V+ NO2–NO4 A0 VOUT MAX4634 90% 90% A1 COM VOUT GND 50Ω V+ 35pF 300Ω 0 tON tOFF Figure 2. Switching Time V+ VEN +2.4V V+ EN MAX4634 tR < 5ns tF < 5ns 50% 0 +5V A0 VA VIH + 0.5V LOGIC INPUT VA_ +10V NO1–NO4 90% A1 COM SWITCH OUTPUT VOUT VOUT GND 35pF tOPEN 0 300Ω 50Ω Figure 3.
PAGE 9
Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer V+ 10nF V+ VIN V+ EN OFF-ISOLATION = 20log VOUT VIN ON-LOSS = 20log VOUT VIN CROSSTALK = 20log VOUT VIN NO MAX4634 V+ NETWORK ANALYZER 50Ω 50Ω VOUT MEAS REF COM A GND 50Ω 50Ω NOTES: MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM AND “OFF” TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM AND “ON” TERMINAL ON EACH SWITCH.
PAGE 10
MAX4634 Fast, Low-Voltage, 4Ω, 4-Channel CMOS Analog Multiplexer Revision History PAGES CHANGED REVISION NUMBER REVISION DATE 0 4/00 Initial release 1 2/02 Added QFN package — 2 5/03 Added QFN packaging information — 3 2/09 Added TDFN package information (replaced QFN), style edits DESCRIPTION — 1, 7 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.