Datasheet > MAX9770EUI+

MAX9770EUI+

更新时间： 2024-11-23 20:49:35

品牌	Logo	应用领域
美信 - MAXIM		放大器信息通信管理光电二极管商用集成电路
页数	文件大小	规格书
22页	450K
描述
Audio Amplifier, 1.2W, 2 Channel(s), 1 Func, BICMOS, PDSO28, 4.40 MM, TSSOP-28

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MAX9770EUI+ 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	SSOP	包装说明：	TSSOP, TSSOP28,.25
针数：	28	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.33.00.01
风险等级：	5.71	标称带宽：	22 kHz
商用集成电路类型：	AUDIO AMPLIFIER	增益：	9 dB
JESD-30 代码：	R-PDSO-G28	JESD-609代码：	e3
长度：	9.7 mm	湿度敏感等级：	1
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：	1.2 W
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装等效代码：	TSSOP28,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
电源：	3/5 V	认证状态：	Not Qualified
座面最大高度：	1.1 mm	子类别：	Audio/Video Amplifiers
最大压摆率：	10 mA	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2.5 V	表面贴装：	YES
技术：	BICMOS	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	4.4 mm
Base Number Matches：	1

MAX9770EUI+ 数据手册

19-3134; Rev 2; 4/08

EVALUATION KIT

AVAILABLE

1.2W, Low-EMI, Filterless, Mono Class D Amplifier

with Stereo DirectDrive Headphone Amplifiers

MAX970

General Description

Features

♦ 1.2W Filterless Class D Amplifiers Pass FCC

The MAX9770 combines a mono, filterless, Class D

speaker amplifier and stereo DirectDrive^®headphone

amplifier in a single device. The MAX9770 operates

from a single 2.5V to 5.5V supply and includes features

that reduce external component count, system cost,

board space, and offer improved audio reproduction.

Class B Radiated EMI Standards with 100mm

of Cable

♦ Spread-Spectrum Mode Offers 5dB EMI

Improvement over Conventional Methods

♦ 80mW DirectDrive Headphone Amplifier

Eliminates Bulky DC-Blocking Capacitors

♦ High 85dB PSRR at 217Hz

The speaker amplifier makes use of Maxim’s Class D

architecture, providing Class AB performance with Class

D efficiency, conserving board space, and extending

battery life. The speaker amplifier delivers 1.2W into an

8Ω load while offering efficiencies above 85%. A spread-

spectrum modulation scheme reduces radiated emis-

sions caused by the modulation frequency. Furthermore,

the MAX9770 oscillator can be synchronized to an exter-

nal clock through the SYNC input, avoiding possible

problem frequencies inside a system. The speaker

amplifier features THD+N as low as 0.025%, high 70dB

PSRR, and SNR in excess of 90dB.

♦ 85% Efficiency

♦ Low 0.015% THD+N

♦ Industry-Leading Click-and-Pop Suppression

♦ Integrated 3-Way Input Mixer/Multiplexer

(MAX9770)

♦ Logic-Adjustable Gain

♦ Short-Circuit and Thermal Protection

♦ Available in Space-Saving, Thermally Efficient

Packages

The headphone amplifiers feature Maxim’s DirectDrive

architecture that produces a ground-referenced output

from a single supply, eliminating the need for large DC-

blocking capacitors. The headphone amplifiers deliver up

to 80mW into a 16Ω load, feature low 0.015% THD+N,

high 85dB PSRR, and 8kV ESD-protected outputs. A

headphone sense input detects the presence of a head-

phone, and automatically configures the amplifiers for

either speaker or headphone mode.

Ordering Information

PART

PIN-PACKAGE

28 TQFN-EP*

28 TSSOP

SELECTABLE INPUTS

2 stereo, 1 mono

MAX9770ETI+

MAX9770EUI

2 stereo, 1 mono

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

temperature range.

*EP = Exposed pad.

Denotes a lead-free package.

The MAX9770 includes internally set, logic-selectable

gain, and a comprehensive input multiplexer/mixer, allow-

ing multiple audio sources to be selected and for true

mono reproduction of a stereo source in speaker mode.

Industry-leading click-and-pop suppression eliminates

audible transients during power and shutdown cycles. A

low-power shutdown mode decreases supply current

consumption to 0.1µA, further extending battery life.

Pin Configuration appears at end of data sheet.

Simplified Block Diagram

DirectDrive

STEREO

HEADPHONE

IN1L

IN2L

The MAX9770 is offered in space-saving, thermally effi-

cient 28-pin TQFN (5mm x 5mm x 0.8mm) and 28-pin

TSSOP packages. The MAX9770 features thermal-over-

load and output short-circuit protection, and is speci-

fied over the extended -40°C to +85°C temperature

range.

MONO

IN1R

IN2R

Applications

Cellular Phones

Compact Notebooks

PDAs

GAIN SEL

INPUT SEL

MUTE

SPKR

(MONO)

CLASS

SHDN

HPS

MAX9770

________________________________________________________________ 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.

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MAX9770EUI+ 替代型号

型号	品牌	替代类型	描述	数据表
MAX9770EUI+T	MAXIM	完全替代	Audio Amplifier, 1.2W, 2 Channel(s), 1 Func, BICMOS, PDSO28, 4.40 MM, TSSOP-28
MAX9770EUI	MAXIM	完全替代	1.2W Low-EMI, Filterless, Mono Class D Amplifier with Stereo DirectDrive Headphone Amplifi
MAX9770ETI+	MAXIM	类似代替	Audio Amplifier, 1.2W, 2 Channel(s), 1 Func, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE,

与MAX9770EUI+相关器件

型号	品牌	获取价格	描述	数据表
MAX9770EUI+T	MAXIM	获取价格	Audio Amplifier, 1.2W, 2 Channel(s), 1 Func, BICMOS, PDSO28, 4.40 MM, TSSOP-28
MAX9773	MAXIM	获取价格	1.8W, Filterless, Ultra-Low EMI, Stereo Class D Audio Power Amplifier
MAX9773EBP-T	MAXIM	获取价格	1.8W, Filterless, Ultra-Low EMI, Stereo Class D Audio Power Amplifier
MAX9773ETG+	MAXIM	获取价格	1.8W, Filterless, Ultra-Low EMI, Stereo Class D Audio Power Amplifier
MAX9773ETG+T	MAXIM	获取价格	Audio Amplifier, 1.8W, 2 Channel(s), 1 Func, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, LEAD FREE,
MAX9775	MAXIM	获取价格	2 x 1.5W, Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier
MAX9775_V01	MAXIM	获取价格	2 x 1.5W, Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier
MAX9775EBX+	MAXIM	获取价格	Audio Amplifier, 3 Func, BICMOS, PBGA36
MAX9775EBX+T	MAXIM	获取价格	2 x 1.5W, Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier
MAX9775EBX+T*	MAXIM	获取价格	2 x 1.5W, Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier

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