Datasheet > MAX9778ETI+

MAX9778ETI+

更新时间： 2024-02-21 21:41:02

品牌	Logo	应用领域
罗彻斯特 - ROCHESTER		放大器
页数	文件大小	规格书
28页	1890K
描述
3W, 2 CHANNEL, AUDIO AMPLIFIER, QCC28, 5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WHHD-1, TQFN-28

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MAX9778ETI+ 技术参数

是否无铅：	不含铅	生命周期：	Active
零件包装代码：	QFN	包装说明：	5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WHHD-1, TQFN-28
针数：	28	Reach Compliance Code：	unknown
风险等级：	5.77	标称带宽：	22 kHz
商用集成电路类型：	AUDIO AMPLIFIER	JESD-30 代码：	S-XQCC-N28
JESD-609代码：	e3	长度：	5 mm
湿度敏感等级：	NOT SPECIFIED	信道数量：	2
功能数量：	1	端子数量：	28
最高工作温度：	85 °C	最低工作温度：	-40 °C
标称输出功率：	3 W	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装形状：	SQUARE
封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	COMMERCIAL	座面最大高度：	0.8 mm
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	4.5 V
表面贴装：	YES	技术：	BICMOS
温度等级：	INDUSTRIAL	端子面层：	MATTE TIN
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	5 mm	Base Number Matches：	1

MAX9778ETI+ 数据手册

19-0509; Rev 0; 4/06

Stereo 3W Audio Power Amplifiers with

Headphone Drive and Input Mux

/MAX978

General Description

Features

♦ Industry-Leading, Ultra-High 100dB PSRR

The MAX9777/MAX9778 combine a stereo 3W bridge-

tied load (BTL) audio power amplifier, stereo single-

ended (SE) headphone amplifier, headphone sensing,

and a 2:1 input multiplexer all in a tiny 28-pin thin QFN

package. These devices operate from a single 4.5V to

5.5V supply and feature an industry-leading 100dB

PSRR, allowing these devices to operate from noisy

supplies without the addition of a linear regulator. An

ultra-low 0.002% THD+N ensures clean, low-distortion

amplification of the audio signal. Click-and-pop sup-

pression minimizes audible transients on power and

shutdown cycles. Power-saving features include low

♦ 3W BTL Stereo Speaker Amplifier

♦ 200mW Stereo Headphone Amplifier

♦ Low 0.002% THD+N

♦ Click-and-Pop Suppression

♦ ESD-Protected Outputs

♦ Low Quiescent Current: 13mA

♦ Low-Power Shutdown Mode: 10µA

♦ MUTE Function

♦ Headphone Sense Input

♦ Stereo 2:1 Input Multiplexer

4mV V

(minimizes DC current drain through the

speakers), low 13mA supply current, and a 10µA shut-

down mode. A MUTE function allows the outputs to be

quickly enabled or disabled.

♦ Optional 2-Wire, I C-Compatible or Parallel

Interface

♦ Tiny 28-Pin Thin QFN (5mm x 5mm x 0.8mm)

A headphone sense input detects the presence of a

headphone jack and automatically configures the

amplifiers for either speaker or headphone mode. In

speaker mode, the amplifiers can deliver up to 3W of

continuous average power into a 3Ω load. In head-

phone mode, the amplifier can deliver up to 200mW of

continuous average power into a 16Ω load. The gain of

the amplifiers is externally set, allowing maximum flexi-

bility in optimizing output levels for a given load. The

amplifiers also feature a 2:1 input multiplexer, allowing

multiple audio sources to be selected. The multiplexer

can also be used to compensate for limitations in the

frequency response of the loud speakers by selecting

an external equalizer network. The various functions are

Package

Ordering Information

CONTROL

INTERFACE

PIN-

PACKAGE

PKG

PART

CODE

MAX9777ETI+

MAX9778ETI+

I C Compatible 28 Thin QFN-EP* T2855-6

Parallel 28 Thin QFN-EP* T2855-6

Note: All devices are specified over the -40°C to +85°C operat-

ing temperature range.

+Denotes lead-free package.

*EP = Exposed paddle.

Pin Configurations and Functional Diagrams appear at end

of data sheet.

controlled by either an I C-compatible (MAX9777) or

simple parallel control interface (MAX9778).

The MAX9777/MAX9778 are available in a thermally

efficient 28-pin thin QFN package (5mm x 5mm x

0.8mm). These devices have thermal-overload protec-

tion (OVP) and are specified over the extended -40°C

to +85°C temperature range.

Simplified Block Diagram

SINGLE SUPPLY

4.5V TO 5.5V

LEFT IN1

LEFT IN2

Applications

SE/

BTL

Notebooks

PC Audio Peripherals

Camcorders

Portable DVD Players

Tablet PCs

RIGHT IN1

RIGHT IN2

Multimedia Monitor

I²C-

CONTROL

COMPATIBLE

MAX9777

________________________________________________________________ Maxim Integrated Products

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.

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