MAX98355AEWL+ Maxim Integrated, MAX98355AEWL+ Datasheet

MAX98355AEWL+

Manufacturer Part Number

MAX98355AEWL+

Description

Audio Amplifiers PCM Input Class D Audio Power Amp

Manufacturer

Maxim Integrated

Datasheet

1.MAX98355BEWL.pdf (34 pages)

Specifications of MAX98355AEWL+

Rohs

yes

Product

Class-D

Output Power

3.2 W

Thd Plus Noise

0.013 %

Operating Supply Voltage

2.5 V to 5.5 V

Supply Current

2.5 mA

Maximum Power Dissipation

1096 mW

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Package / Case

WLP-9

Minimum Operating Temperature

- 40 C

Current page: 1 of 34
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The MAX98355A/MAX98355B are digital pulse-code

modulation (PCM) input Class D power amplifiers that

provide Class AB audio performance with Class D effi-

ciency. These ICs offer five selectable gain settings

(3dB, 6dB, 9dB, 12dB, and 15dB) set by a single gain-

select input (GAIN).

The digital audio interface is highly flexible with the

MAX98355A supporting I

supporting left-justified data. Both ICs support time divi-

sion multiplexed (TDM) data. The digital audio interface

accepts sample rates ranging from 8kHz to 96kHz for all

supported data formats. The ICs can be configured to

produce a left channel, right channel, or (left + right)/2

output from the stereo input data. The ICs operate using

16/24/32-bit data for I

as 16-bit data with up to four slots when using TDM

mode. The ICs eliminate the need for the external MCLK

signal that is typically used for PCM communication. This

reduces EMI and possible board coupling issues in addi-

tion to reducing the size and pin count of the ICs.

The ICs also feature a very high wideband jitter tolerance

(12ns typ) on BCLK and LRCLK to provide robust operation.

Active emissions-limiting, edge-rate limiting, and over-

shoot control circuitry greatly reduce EMI. A filterless

spread-spectrum modulation scheme eliminates the

need for output filtering found in traditional Class D

devices and reduces the component count of the solution.

The ICs are available in a 9-pin WLP package (1.345mm

x 1.435mm x 0.64mm) and are specified over the -40NC

to +85NC temperature range.

Ordering Information

Functional Diagram

For related parts and recommended products to use with this part,

refer to www.maxim-ic.com/MAX98355A.related.

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.

Cellular Phones

Tablets

Portable Media Players

Notebook Computers

�� Maxim Integrated Products 1

appears at end of data sheet.

PCM Input Class D Audio Power Amplifiers

appears at end of data sheet.

S and left justified modes as well

General Description

S data and the MAX98355B

Applications

MAX98355A/MAX98355B

S Single-Supply Operation (2.5V to 5.5V)

S 3.2W Output Power into 4I at 5V

S 2.2mA Quiescent Current

S 92% Efficiency (R

S 25µV

S Low 0.013% THD+N at 1kHz

S No MCLK Required

S Sample Rates of 8kHz to 96kHz

S Supports Left, Right, or (Left + Right)/2 Outputs

S Sophisticated Edge Rate Control Enables

S 77dB PSRR at 217Hz

S Low RF Susceptibility Rejects TDMA

S Extensive Click-and-Pop Reduction Circuitry

S Robust Short-Circuit and Thermal Protection

S Available in Space-Saving Package:

Filterless Class D Outputs

Noise from GSM Radios

1.345mm x 1.435mm WLP (0.4mm Pitch)

INPUT

PCM

= 3.7V)

RMS

Output Noise (A

SHUTDOWN

INTERFACE

CHANNEL

DIGITAL

SELECT

AUDIO

Simplified Block Diagram

AND

E V A L U A T I O N K I T A V A I L A B L E

= 8I, P

MAX98355A

MAX98355B

DAC

OUT

= 15dB)

= 900mW,

CONTROL

CLASS D

OUTPUT

STAGE

GAIN

19-6278; Rev 0; 5/12

Features

Related parts for MAX98355AEWL+

MAX98355AEWL+ Summary of contents

... SD_MODE A1 Ordering Information PART TEMP RANGE MAX98355AEWL+ -40NC to +85NC -40NC to +85NC MAX98355BEWL+ +Denotes a lead(Pb)-free/RoHS-compliant package. �� Maxim Integrated Products 32 MAX98355A/MAX98355B 2 ...

Page 33

... �� ...

Page 34

... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2012 Maxim Integrated Products © ...

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MAX98355AEWL+ Maxim Integrated, MAX98355AEWL+ Datasheet

MAX98355AEWL+

Specifications of MAX98355AEWL+

Related parts for MAX98355AEWL+

MAX98355AEWL+ Summary of contents

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