General Description

The MAX4991–MAX4994 low on-resistance analog

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

The MAX4991/MAX4993 feature a slow turn-on time to

reduce clicks and pops due to coupling capacitors and

audio amplifiers with a DC output bias. This feature pro-

vides click-and-pop reduction without adding additional

parts for existing architectures.

The MAX4991/MAX4992 are dual single-pole/double-

throw (SPDT) switches, while the MAX4993/MAX4994

are double-pole/double-throw (DPDT) switches. The

MAX4993/MAX4994 feature an active-low enable input

(EN) that sets all the channels to high impedance and

reduces supply current when driven high. These

devices have 0.3

Ω on-resistance and 0.004% THD+N

to route high fidelity audio signals.

The MAX4991–MAX4994 are available in space-saving

10-pin UTQFN (1.4mm x 1.8mm) package, and are

specified for operation over the -40°C to +85°C extend-

ed temperature range.

Applications

Speaker Headset Source Switching

Cellular Phones

Portable MP3 Players

Audio Signal Routing

Features

♦ Slow Turn-On for Click-and-Pop Reduction Without

Additional Parts

♦ Low 0.3Ω On-Resistance

♦ Low THD+N: 0.004%

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

♦ 1.2µA (typ) Supply Current

♦ Space-Saving Packages

10-Pin UTQFN (1.4mm x 1.8mm x 0.55mm)

Switches with Slow Turn-On Time

________________________________________________________________

Maxim Integrated Products

1

Ordering Information/Selector Guide

19-4150; Rev 1; 6/09

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.

Note: All devices operate over -40°C to +85°C extended temperature range.

+

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

*

Future product—contact factory for availability.

PART

PIN-PACKAGE

CONFIGURATION

SLOW-SWITCHING

TIME

ENABLE LINE

TOP

MARK

MAX4991EVB+*

10 UTQFN

Dual SPDT

Yes

No

AAD

MAX4992EVB+

10 UTQFN

Dual SPDT

No

No

AAE

MAX4993EVB+

10 UTQFN

DPDT

Yes

Yes

AAF

MAX4994EVB+*

10 UTQFN

DPDT

No

Yes

AAG

Typical Application Circuit appears at end of data sheet.

TOP VIEW

5

4

3

8

9

10

MAX4993/

MAX4994

7

6

1

2

NC1

CB

COM1

NO2

COM2

UTQFN

EN

5

4

3

8

9

10

MAX4991/

MAX4992

7

6

1

2

NC1

CB1

COM1

NO2

COM2

CB2

UTQFN

Pin Configurations