Rainbow-electronics MAX4912 Manuel d'utilisateur télécharger pdf

MAX4910/MAX4911/MAX4912

Quad-SPDT, Clickless Audio Switches

with Negative Signal Handling

________________________________________________________________ Maxim Integrated Products 1

19-3854; Rev 0; 2/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

COM4 NO4 EN NC3

NC1 CB NO2 COM2

12 10 9

NO1

COM1

COM3

NO3

GND

NC2

MAX4911

NC4

THIN QFN

3 mm x 3 mm

COM4 NO4 CB2 NC3

NC1 CB1 NO2 COM2

12 10 9

NO1

COM1

COM3

NO3

GND

NC2

MAX4910

MAX4912

NC4

THIN QFN

3 mm x 3 mm

TOP VIEW

Pin Configurations

General Description

The MAX4910/MAX4911/MAX4912 quad, single-

pole/double-throw (SPDT), clickless audio switches fea-

ture negative signal capability that allows signals as low

as V

-5.5V to pass through without distortion. These

analog switches have a low on-resistance, low supply

current, and operate from a single +1.8V to +5.5V supply.

The MAX4910/MAX4911/MAX4912 have internal shunt

resistors that automatically discharge the capacitance at

the normally open (NO) and normally closed (NC) termi-

nals when they are not connected. The MAX4910/

MAX4911 have shunt resistors on all NO and NC terminals

and the MAX4912 has shunt resistors on all NO, NC1, and

NC3 terminals. These shunt resistors reduce click-and-

pop sounds that occur when switching audio signals

between precharged points. A break-before-make feature

further reduces popping.

The MAX4910/MAX4912 control the switches in pairs with

two control bits CB1 and CB2. The MAX4911 has one con-

trol bit to switch all four switches and an enable pin EN to

put the switches in a high-impedance mode. The MAX4912

has two terminals without shunt resistors for switching

applications that do not require pre-discharge switching.

The MAX4910/MAX4911/MAX4912 are available in a tiny

16-pin TQFN-EP (3mm x 3mm) package and operate

over the -40°C to +85°C extended temperature range.

Applications

Cell Phones

PDAs and Handheld Devices

Notebook Computers

MP3 Players

Features

♦ Distortion-Free Negative Signal Throughput Down

to V

- 5.5V

♦ Internal Shunt Resistors Reduce Click-and-Pop

Sounds

♦ High PSRR Reduces Supply Noise

♦ Low On-Resistance (0.37Ω)

♦ 0.1Ω Channel-to-Channel Matching

♦ 0.35Ω On-Resistance Flatness

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

♦ -80dB Crosstalk (20kHz)

♦ -90dB Off-Isolation (20kHz)

♦ 0.05% Total Harmonic Distortion

♦ Enable Control (MAX4911)

♦ 10nA Leakage Current

♦ 150nA Supply Current

Ordering Information

PA RT

T EM P R AN G E

PIN-

PA CK A G E

T O P

M A RK

PK G

C O DE

M A X4 9 1 0E TE+

- 40°C to + 85°C 16 TQFN- E P ** AD Y

T1633- 4

M A X4 9 1 1E TE+ *

- 40°C to + 85°C 16 TQFN- E P ** AD Z

T1633- 4

M A X4 9 1 2E TE+ *

- 40°C to + 85°C 16 TQFN- E P ** AE A

T1633- 4

+ Denotes lead-free package.

*Future product—contact factory for availability.

**EP = Exposed pad.

Typical Operating Circuit appears at end of data sheet.

1 2 3 4 5 6 ... 12 13

MAX4910/MAX4911/MAX4912 1

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MAX4910/MAX4911/MAX4912Quad-SPDT, Clickless Audio Switcheswith Negative Signal HandlingMaxim cannot assume responsibility for use of any circuitry oth

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