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MAX9789CETJ+

更新时间： 2024-02-09 21:32:40

品牌	Logo	应用领域
美信 - MAXIM		放大器
页数	文件大小	规格书
28页	501K
描述
Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers

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MAX9789CETJ+ 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	QFN
包装说明：	HVQCCN, LCC32,.2SQ,20	针数：	32
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.33.00.01	Factory Lead Time：	1 week
风险等级：	5.81	标称带宽：	20 kHz
商用集成电路类型：	AUDIO AMPLIFIER	增益：	21.6 dB
JESD-30 代码：	S-XQCC-N32	长度：	5 mm
信道数量：	2	功能数量：	1
端子数量：	32	最高工作温度：	85 °C
最低工作温度：	-40 °C	标称输出功率：	2 W
封装主体材料：	UNSPECIFIED	封装代码：	HVQCCN
封装等效代码：	LCC32,.2SQ,20	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
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	0.8 mm	子类别：	Audio/Video Amplifiers
最大压摆率：	40 mA	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

MAX9789CETJ+ 数据手册

19-0606; Rev 3; 9/09

Windows Vista-Compliant, Stereo Class AB Speaker

Amplifiers and DirectDrive Headphone Amplifiers

8/MAX790

General Description

Features

The MAX9789/MAX9790 combine a stereo, 2W Class AB

speaker power amplifier with a stereo 100mW

DirectDrive^®headphone amplifier in a single device. The

MAX9789/MAX9790 are designed for use with the

Microsoft Windows Vista^®operating system and are fully

compliant with Microsoft’s Windows Vista specifications.

o Microsoft Windows Vista Compliant

o Class AB 2W Stereo BTL Speaker Amplifier

o 100mW DirectDrive Headphone Amplifier

Eliminates Costly, Bulky DC-Blocking Capacitors

o Excellent RF Immunity

†

The headphone amplifier features Maxim’s patented

o Integrated 120mA LDO (MAX9789)

o High +90dB PSRR, Low 0.002% THD+N

o Low-Power Shutdown Mode

o Click-and-Pop Suppression

o Short-Circuit and Thermal-Overload Protection

DirectDrive architecture that produces a ground-refer-

enced output from a single supply to eliminate the need

for large DC-blocking capacitors, as well as save cost,

board space, and component height. A high +90dB

PSRR and low 0.002% THD+N ensures clean, low-distor-

tion amplification of the audio signal.

o Available in 32-Pin Thin QFN (5mm x 5mm x

0.8mm) Package

Separate speaker and headphone amplifier control

inputs provide independent shutdown of the speaker

and headphone amplifiers, allowing speaker and head-

phone amplifiers to be active simultaneously, if

required. The industry-leading click-and-pop suppres-

sion circuitry reduces audible transients during startup

and shutdown cycles.

Ordering Information

PART

PIN-PACKAGE INTERNAL LDO t

(ms)

MAX9789AETJ+ 32 TQFN-EP*

MAX9789BETJ+** 32 TQFN-EP*

MAX9789CETJ+ 32 TQFN-EP*

MAX9790AETJ+ 32 TQFN-EP*

MAX9790BETJ+** 32 TQFN-EP*

Yes

100

The MAX9789 features an internal LDO that can be used

as a clean power supply for a CODEC or other circuits.

The LDO output voltage is set internally at 4.75V or can

be adjusted between 1.21V and 4.75V using a simple

resistive divider. The LDO is protected against thermal

overloads and short circuits while providing 120mA of

continuous output current and can be enabled indepen-

dently of the audio amplifiers.

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

temperature range.

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

*EP = Exposed pad.

**Future product—contact factory for availability.

By disabling the speaker and headphone amplifiers, and

the LDO (for MAX9789), the MAX9789/MAX9790 enter

low-power shutdown mode and draw only 0.3µA.

Simplified Block Diagrams

The MAX9789/MAX9790 operate from a single 4.5V to

5.5V supply and feature thermal-overload and output

short-circuit protection. Devices are specified over the

-40°C to +85°C extended temperature range.

SPEAKER SUPPLY HEADPHONE SUPPLY

4.5V TO 5.5V

3.0V TO 5.5V

SPKR_INR

MAX9789

Applications

SPKR_INL

HP_INR

Notebook Computers

Tablet PCs

HP_INL

Portable Multimedia Players

SPKR_EN

HP_EN

Pin Configurations appear at end of data sheet.

MUTE

GAIN1

GAIN2

†

U.S. Patent # 7,061,327.

LDO

Windows Vista is a registered trademark of Microsoft Corp.

1.21V TO 4.75V

4.5V TO 5.5V

DirectDrive is a registered trademark of Maxim Integrated

Products, Inc.

Simplified Block Diagrams continued at end of data sheet.

________________________________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7...28

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