Datasheet > MAX9850_V01

MAX9850_V01

更新时间： 2024-11-19 02:52:55

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
36页	3658K
描述
Stereo Audio DAC with DirectDrive Headphone Amplifier

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中文翻译

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MAX9850

Stereo Audio DAC with DirectDrive

Headphone Amplifier

General Description

Features

● 1.8V to 3.6V Single-Supply Operation

The MAX9850 is a low-power, high-performance stereo

audio DAC with an integrated DirectDrive headphone

amplifier. The MAX9850 is designed to meet the board

space and performance requirements of portable devices

such as cell phones and MP3 and portable DVD players.

● 30mW Stereo Headphone Output Power with

1.8V Supply

● DirectDrive Outputs Eliminate DC-Blocking

Capacitors

The MAX9850 uses Maxim’s DirectDrive headphone

technology that produces a ground-biased analog audio

output from a single supply, which allows for driving the

headphones directly from the amplifier outputs without large

DC-blocking capacitors. This feature saves board space,

provides higher click/pop suppression, and improves

low-frequency (bass) response. The architecture does not

require the headphone jack to be biased to a DC voltage

and thus allows for a conventional, grounded chassis

design.

● 91dB PSRR at 1kHz

● Any Master Clock Up to 40MHz

● Flexible I S-Compatible Digital Audio Interface

● I C Headphone Volume and Mute Control

● Stereo Line Inputs and Outputs

● Clickless/Popless Operation

● 2-Wire (I C)-Compatible Control Interface

● Available in 28-Pin Thin QFN Package

The MAX9850’s flexible clocking circuitry utilizes any available

system clock up to 40MHz, eliminating the need for an

external PLL and multiple crystal oscillators. The DAC

supports a wide range of sample rates from 8kHz to 48kHz

in both master and slave modes, making the MAX9850 the

easiest to use and most versatile audio DAC available. It

can also be operated like traditional synchronous DACs, at

any integer-oversampling ratio.

Ordering Information

PIN-

PACKAGE

PKG

CODE

PART

TEMP RANGE

MAX9850ETI+ -40°C to +85°C 28 TQFN-EP** T2855+

**EP = Exposed pad.

+Denotes lead-free package.

The audio DAC receives input data over a flexible

3-wire interface that supports left-justified, right-

justified audio data, or I S-compatible audio data. Stereo

Pin Configuration appears at end of data sheet.

audio line inputs are provided to either mix analog audio

with the digital input stream, or to drive the headphone

outputs directly. Mode settings, headphone amplifier

volume controls, and shutdown for both the headphone

and line outputs are programmed through a 2-wire,

Block Diagram

MCLK

1.8V TO 3.6V

INR

I C-compatible interface.

DIGITAL

PLL

OUTR

HPR

LINE

OUT

MAX9850

The MAX9850 is fully specified over the -40°C to +85°C

extended temperature range and is available in a low-

profile, 28-pin thin QFN package (5mm x 5mm x 0.8mm).

DAC

SDIN

BCLK

LRCLK

DIGITAL

AUDIO

HPL

Applications

DAC

●ꢀ MP3/Portable Multimedia Players

●ꢀ Cell Phones/Smart Phones

●ꢀ Portable DVD Players

SDA

SCL

ADD

GPIO

OUTL

LINE

OUT

I C

INL

19-3454; Rev 4; 8/19

12 3 4 5 6 7...36

中文翻译

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与MAX9850_V01相关器件

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MAX98500	MAXIM	获取价格	升压型2.2W D类扬声器放大器
MAX98500EVKIT	MAXIM	获取价格	MAX98500 Evaluation Kit
MAX98500EVKIT+	MAXIM	获取价格	MAX98500 Evaluation Kit
MAX98500EWE+	MAXIM	获取价格	Boosted 2.2W Class D Amplifier with Automatic Level Control
MAX98500EWE+T	MAXIM	获取价格	暂无描述
MAX98502	MAXIM	获取价格	Boosted 2.2W Class D Amplifier with Automatic Level Control
MAX98502	ADI	获取价格	内置boost转换器的2.2W D类放大器，带有自动电平控制
MAX98502EWE+T	MAXIM	获取价格	Audio Amplifier,
MAX9850ETI	MAXIM	获取价格	Stereo Audio DAC with DirectDrive Headphone Amplifier
MAX9850ETI/GH9	MAXIM	获取价格	Consumer Circuit, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, MO-220WHHD-1, TQFN-28

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