MAX13331 Maxim Integrated Products, MAX13331 Datasheet

MAX13331

Manufacturer Part Number

MAX13331

Description

(MAX13330 / MAX13331) Automotive DirectDrive Headphone Amplifiers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX13331.pdf (15 pages)

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The MAX13330/MAX13331 stereo headphone amplifiers

are designed for automotive applications requiring out-

put short-circuit and ESD protection to battery/ground

with diagnostics. These devices use Maxim’s unique,

patented

ground-referenced output from a single supply, elimi-

nating the need for large DC-blocking capacitors, sav-

ing board space and component height. The gain of the

amplifier is set internally (-1.5V/V) on the MAX13330 or

adjusted externally with resistors on the MAX13331.

The MAX13330/MAX13331 deliver 120mW per channel

into a 16Ω load or 135mW into a 32Ω load and have a

low 0.01% THD+N. Low output impedance and the effi-

cient integrated charge pump allows the device to drive

loads as low as 8Ω, enabling the use of small loud-

speakers. An 80dB at 217Hz PSRR allows these

devices to operate from noisy digital supplies without

an additional linear regulator. These devices include

±15kV Human Body Model ESD protection and short-

circuit protection up to +45V at the headphone outputs.

Comprehensive click-and-pop circuitry suppresses

audible clicks and pops on startup and shutdown. A

low-power shutdown mode reduces the supply current

to 3µA (typ).

The MAX13330/MAX13331 are specified from -40°C to

+105°C AEC-Q100 Level 2 automotive temperature

range and are available in a 16-pin QSOP package.

19-4341; Rev 0; 10/08

DirectDrive 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.

U.S. Patent #7,061,327

RIGHT-CHANNEL

LEFT-CHANNEL

Automotive DirectDrive Headphone Amplifiers

AUDIO IN

SHDN

Automotive Entertainment Systems

Automotive Rear Seat Entertainment Systems

†

DirectDrive

Simplified Block Diagram

MAX13330

________________________________________________________________ Maxim Integrated Products

with Output Protection and Diagnostics

General Description

CLICK-AND-POP

SUPPRESSION

architecture to produce a

Applications

DIAGNOSTICS

OUTPUT

♦ 4V to 5.5V Single-Supply Operation

♦ 2MHz Charge Pump Prevents AM Radio

♦ Ground-Referenced Outputs Eliminate Bulky DC-

♦ Short-to-Ground and Battery (V

♦ Short-Circuit Diagnostic Output

♦ Adjustable Gain (MAX13331) or Fixed -1.5V/V Gain

♦ 135mW per Channel into 32Ω at 1% THD+N

♦ Low 0.01% THD+N

♦ Integrated Click-and-Pop Suppression

♦ High PSRR Eliminates LDO

♦ No Degradation of Low-Frequency Response Due

♦ ±15kV Human Body Model ESD Protection for

+ Denotes a lead-free/RoHS-compliant package.

T = Tape-and-reel.

/V denotes an automotive qualified part.

Typical Application Circuits appear at end of data sheet.

M A X1 3 3 3 0 GE E /V + T

M A X1 3 3 3 1 GE E /V + T

Interference

Blocking Capacitors

Output Protection, Load Dump Protection

(MAX13330)

to Output Capacitors

Output Pins

PART

CPVDD

SGND

SHDN

C1P

INR

INL

E xter nal l y

-1.5V/V

GAIN

Ordering Information

Set

MAX13330

MAX13331

QSOP

Pin Configuration

- 40°C to + 105°C

RANGE

TEMP

BAT

OUTL

PGND

OUTR

DIAG

CPVSS

C1N

PGND

up to +45V)

Features

PACKAGE

16 QSOP

PIN-

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