Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - analogue switches uMAX 10

General Description

The MAX4684/MAX4685 low on-resistance (R

), low-

voltage, dual single-pole/double-throw (SPDT) analog

switches operate from a single +1.8V to +5.5V supply.

The MAX4684 features a 0.5Ω (max) R

for its NC

switch and a 0.8Ω (max) R

for its NO switch at a

+2.7V supply. The MAX4685 features a 0.8Ω max on-

resistance for both NO and NC switches at a +2.7V

supply.

Both parts feature break-before-make switching action

(2ns) with t

= 50ns and t

OFF

= 40ns at +3V. The digi-

tal logic inputs are 1.8V logic-compatible with a +2.7V to

+3.3V supply.

The MAX4684/MAX4685 are packaged in the chipscale

package (UCSP)™, significantly reducing the required

PC board area. The chip occupies only a 2.0mm

1.50mm area. The 4

3 array of solder bumps are

spaced with a 0.5mm bump pitch.

________________________Applications

Speaker Headset Switching

MP3 Players

Power Routing

Battery-Operated Equipment

Relay Replacement

Audio and Video Signal Routing

Communications Circuits

PCMCIA Cards

Cellular Phones

Modems

Features

♦ 12-Bump, 0.5mm-Pitch UCSP

♦ NC Switch R

0.5Ω max (+2.7V Supply) (MAX4684)

0.8Ω max (+2.7V Supply) (MAX4685)

♦ NO Switch R

0.8Ω max (+2.7V Supply)

♦ R

Match Between Channels

0.06Ω (max)

♦ R

Flatness Over Signal Range

0.15Ω (max)

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

♦ Rail-to-Rail Signal Handling

♦ 1.8V Logic Compatibility

♦ Low Crosstalk: -68dB (100kHz)

♦ High Off-Isolation: -64dB (100kHz)

♦ THD: 0.03%

♦ 50nA (max) Supply Current

♦ Low Leakage Currents

1nA (max) at T

= +25°C

MAX4684/MAX4685

0.5

ΩΩ

/0.8

ΩΩ

Low-Voltage, Dual SPDT

Analog Switches in UCSP

________________________________________________________________

Maxim Integrated Products

19-1977; Rev 4; 1/09

COM2COM1

NO2NO1

NC2

IN2IN1

NC1

GND

V+

TOP VIEW

IN_

NO_

MAX4684/MAX4685

OFF

NC_

SWITCHES SHOWN FOR LOGIC "0" INPUT

OFF

UCSP

MAX4684/MAX4685

NC2

IN1

GND

NC1

COM2

IN2

COM1

NO1

NO2

V+

µMAX

C4 B4 A4

A1B1

Pin Configurations/Functional Diagrams/Truth Table

UCSP is a trademark of Maxim Integrated Products, Inc.

µMAX is a registered trademark of Maxim Integrated Products,

Inc.

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.

Continued at end of data sheet.

Ordering Information

Denotes a lead(Pb)-free/RoHS-compliant package.

Note: Requires special solder temperature profile described in

the Absolute Maximum Ratings section.

UCSP reliability is integrally linked to the user’s assembly

methods, circuit board material, and environment. Refer to the

UCSP Reliability Notice in the UCSP Reliability section of this

data sheet for more information.

EP = Exposed Pad

T = Tape and reel.

PART

TEMP RANGE

PIN /B U M P-

PACKAGE

TOP

MARK

M A X4 6 8 4 E BC + T

-40°C to +85°C

12 UCSP* AAF

M AX 4684E TB+ T

-40°C to +85°C 10 TD FN - E P **

AAG

M AX 4684E U B+ T

-40°C to +85°C

10 µMAX

—

M A X4 6 8 5 E BC + T

-40°C to +85°C

12 UCSP* AAG

M AX 4685E TB+ T

-40°C to +85°C 10 TD FN - E P **

AAH

M AX 4685E U B+ T

-40°C to +85°C

10 µMAX —

Summary of content (10 pages)

PAGE 1
9-1977; Rev 4; 1/09 0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSP Features ♦ 12-Bump, 0.5mm-Pitch UCSP ♦ NC Switch RON 0.5Ω max (+2.7V Supply) (MAX4684) 0.8Ω max (+2.7V Supply) (MAX4685) ♦ NO Switch RON 0.8Ω max (+2.7V Supply) ♦ RON Match Between Channels 0.06Ω (max) ♦ RON Flatness Over Signal Range 0.15Ω (max) ♦ +1.8V to +5.5V Single-Supply Operation ♦ Rail-to-Rail Signal Handling ♦ 1.8V Logic Compatibility ♦ Low Crosstalk: -68dB (100kHz) ♦ High Off-Isolation: -64dB (100kHz) ♦ THD: 0.
PAGE 2
MAX4684/MAX4685 0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSP ABSOLUTE MAXIMUM RATINGS (All Voltages Referenced to GND) V+, IN_......................................................................-0.3V to +6V COM_, NO_, NC_ (Note1) ........................... -0.3V to (V+ + 0.3V) Continuous Current NO_, NC_, COM_ .......................... ±300mA Peak Current NO_, NC_, COM_ (pulsed at 1ms, 50% duty cycle).................................
PAGE 3
0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSP (V+ = +2.7V to +3.3V, VIH = +1.4V, VIL = +0.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at +3V and +25°C.) (Notes 3, 9, 10) PARAMETER SYMBOL CONDITIONS Turn-Off Time tOFF V+ = 2.7V, VNO_ or VNC_ = 1.5V; RL = 50Ω; CL = 35pF; Figure 2 Break-Before-Make Delay tBBM V+ = 2.7V, VNO_, or VNC_ = 1.
PAGE 4
Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) MAX4685 NC ON-RESISTANCE vs. COM VOLTAGE 1.4 1.8 1.4 1.0 V+ = +2.0V 0.8 V+ = +2.3V 0.6 RON (Ω) V+ = +5.0V V+ = +2.0V 1.2 1.0 V+ = +2.3V V+ = +2.5V 0.8 V+ = +2.5V 0.4 0.6 V+ = +2.3V 1.0 V+ = +2.5V V+ = +3.0V V+ = +5.0V V+ = +5.0V 0.5 0.2 0 0 1 2 3 4 5 0 VCOM (V) 2 3 VCOM (V) MAX4684 NC ON-RESISTANCE vs. COM VOLTAGE MAX4685 NC ON-RESISTANCE vs. COM VOLTAGE V+ = +5V 0.26 0.
PAGE 5
0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSP 40 tON/tOFF (ns) tON/tOFF (ns) 40 40 tOFF 30 tON 30 25 20 15 20 10 0 5 0 0 1 2 3 4 5 6 1.8 2.3 2.8 3.3 -40 5.3 Q (pC) 0 VIN FALLING -100 -200 0.5 35 -300 100 ICOM(ON) 10 1 2 3 4 5 1 0 6 1 2 3 4 5 6 -40 -15 10 35 60 VSUPPLY (V) VCOM (V) TEMPERATURE (°C) MAX4685 ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE FREQUENCY RESPONSE (µMAX) TOTAL HARMONIC DISTORTION PLUS NOISE vs.
PAGE 6
MAX4684/MAX4685 0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSP Pin Description NAME PIN UCSP FUNCTION µMAX/TDFN NC_ A1, C1 5, 7 Analog Switch—Normally Closed Terminal IN_ A2, C2 4, 8 Digital Control Input COM_ A3, C3 3, 9 Analog Switch—Common Terminal NO_ A4, C4 2, 10 V+ B4 1 Positive Supply Voltage Input GND B1 6 Ground EP — — Exposed Pad. Connect EP to GND (for TDFN only.
PAGE 7
0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSP UCSP Reliability The chip-scale package (UCSP) represents a unique packaging form factor that may not perform equally to a packaged product through traditional mechanical reliability tests. UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and usage environment. The user should closely review these areas when considering use of a UCSP package.
PAGE 8
MAX4684/MAX4685 0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSP Test Circuits/Timing Diagrams (continued) V+ MAX4684 MAX4685 ΔVOUT V+ RGEN VOUT COM_ NC_ OR NO_ VOUT IN OFF CL V GEN GND OFF ON IN_ VIL TO VIH ON OFF IN OFF Q = (ΔV OUT )(C L ) IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 4.
PAGE 9
0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSP PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 12 UCSP B12-4 21-0104 10 TDFN-EP T1033-1 21-0137 10 µMAX U10-2 21-0061 _______________________________________________________________________________________ 9 MAX4684/MAX4685 Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
PAGE 10
MAX4684/MAX4685 0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSP Revision History REVISION NUMBER REVISION DATE 3 2/03 Added TDFN packaging, noted parts are now UCSP qualified 4 1/09 Added lead-free packaging and exposed pad note PAGES CHANGES DESCRIPTION — 1, 2, 6–9 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.