Datasheet > MAX98355B

MAX98355B

更新时间： 2024-11-29 12:10:19

品牌	Logo	应用领域
美信 - MAXIM		放大器功率放大器 PC
页数	文件大小	规格书
34页	1708K
描述
PCM Input Class D Audio Power Amplifiers

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MAX98355B 数据手册

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MAX98355A/MAX98355B

PCM Input Class D Audio Power Amplifiers

General Description

Features

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).

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

S 3.2W Output Power into 4I at 5V

S 2.4mA Quiescent Current

S 92% Efficiency (R = 8I, P

= 900mW,

OUT

= 3.7V)

The digital audio interface is highly flexible with the

MAX98355A supporting I²S data and the MAX98355B

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/2 + right/2

output from the stereo input data. The ICs operate using

16/24/32-bit data for I²S and left justified modes as well

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.

S 25µV

Output Noise (A = 15dB)

RMS

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/2 + Right/2 Outputs

S Sophisticated Edge Rate Control Enables

Filterless Class D Outputs

S 77dB PSRR at 217Hz

S Low RF Susceptibility Rejects TDMA

Noise from GSM Radios

The ICs also feature a very high wideband jitter tolerance

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

S Extensive Click-and-Pop Reduction Circuitry

S Robust Short-Circuit and Thermal Protection

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.

S Available in Space-Saving Package:

1.345mm x 1.435mm WLP (0.4mm Pitch)

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.

Simplified Block Diagram

Applications

Cellular Phones

Tablets

SHUTDOWN

AND

CHANNEL

SELECT

GAIN

CONTROL

MAX98355A

MAX98355B

Portable Media Players

Notebook Computers

CLASS D

OUTPUT

STAGE

DIGITAL

AUDIO

INTERFACE

PCM

INPUT

Ordering Information appears at end of data sheet.

Functional Diagram appears at end of data sheet.

DAC

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

refer to www.maximintegrated.com/MAX98355A.related.

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

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

19-6278; Rev 1; 8/13

12 3 4 5 6 7...34

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与MAX98355B相关器件

型号	品牌	获取价格	描述	数据表
MAX98355BEWL	MAXIM	获取价格	PCM Input Class D Audio Power Amplifiers
MAX98355BEWL+	MAXIM	获取价格	PCM Input Class D Audio Power Amplifiers
MAX98355EVKIT	MAXIM	获取价格	2.5V to 5.5V Single-Supply Operation
MAX98356	MAXIM	获取价格	PDM Input Class D Audio Power Amplifier
MAX98356EWL	MAXIM	获取价格	PDM Input Class D Audio Power Amplifier
MAX98356EWL+	MAXIM	获取价格	PDM Input Class D Audio Power Amplifier
MAX98357	MAXIM	获取价格	MAX98357 Development Board/ Evaluation System (WLP)
MAX98357A	MAXIM	获取价格	PCM Input Class D Audio Power Amplifiers
MAX98357A	ADI	获取价格	尺寸小，成本低，PCM输入的 D类放大器，兼具AB类性能
MAX98357A_V01	MAXIM	获取价格	Tiny, Low-Cost, PCM Class D Amplifier with Class AB Performance

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