MAX9770EUI

更新时间： 2024-11-04 22:37:07

品牌	Logo	应用领域
美信 - MAXIM		消费电路商用集成电路音频放大器视频放大器光电二极管信息通信管理
页数	文件大小	规格书
24页	493K
描述
1.2W Low-EMI, Filterless, Mono Class D Amplifier with Stereo DirectDrive Headphone Amplifiers

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MAX9770EUI 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	TSSOP	包装说明：	4.40 MM, MO-153AE, TSSOP-28
针数：	28	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.33.00.01
风险等级：	5.78	Is Samacsys：	N
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：	e0	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）：	245	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：	Tin/Lead (Sn/Pb)
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 0; 5/04

1.2W Low -EMI, Filte rle s s , Mono Cla s s D Am plifie r

w ith Ste re o Dire c tDrive He a dphone Am plifie rs

Ge n e ra l De s c rip t io n

Fe a t u re s

♦ 1.2W Filterless Class D Amplifier Passes FCC

The MAX9770 combines a mono, filterless, Class D

speaker amplifier and stereo DirectDrive headphone

amplifiers 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 Emissions Standards with

100mm of Cable

♦ Unique Spread-Spectrum Mode Offers 5dB

Emissions Improvement Over Conventional

Methods

The speaker amplifier makes use of Maxim’s patented

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 scheme reduces radiated

e mis s ions c a us e d b y the mod ula tion fre q ue nc y.

Furthermore, the MAX9770 oscillator can be synchro-

nized to an external clock through the SYNC input,

avoiding possible problem frequencies inside a system.

The speaker amplifier features a low 0.025% THD+N,

high 70dB PSRR, and SNR in excess of 90dB.

♦ 80mW DirectDrive Headphone Amplifier

Eliminates Bulky DC-Blocking Capacitors

♦ High 80dB PSRR at 217Hz

♦ 85% Efficiency

♦ Low 0.015% THD+N

♦ Industry-Leading Click-and-Pop Suppression

♦ Integrated 3-Way Input Mixer/Multiplexer

♦ Logic-Selectable Gain

♦ Short-Circuit and Thermal Protection

♦

8kV ESD-Protected Headphone Outputs

The headphone amplifiers feature Maxim’s patented

DirectDrive architecture that produces a ground-refer-

enced output from a single supply, eliminating the need

for large DC-blocking capacitors. The headphone ampli-

fiers deliver up to 80mW into a 16Ω load, feature low

0.015% THD+N, high 80dB PSRR, and 8kV ESD-pro-

tected outputs. A headphone sense input detects the

presence of a headphone, and automatically configures

the amplifiers for either speaker or headphone mode.

♦ Low-Power Shutdown Mode

♦ Available in Space-Saving, Thermally Efficient

Packages

28-Pin TQFN (5mm x 5mm x 0.8mm)

28-Pin TSSOP

Ord e rin g In fo rm a t io n

PART

MAX9770ETI^†

TEMP RANGE

-40^oC to +85^oC

PIN-PACKAGE

28 TQFN-EP*

28 TSSOP

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.

MAX9770EUI

†

Lead-free package.

*EP = Exposed paddle.

S im p lifie d Blo c k Dia g ra m

DirectDrive

STEREO

HEADPHONE

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 specified

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

L1IN

L2IN

MONO

Ap p lic a t io n s

R1IN

R2IN

Cellular Phones

PDAs

SPKR

(MONO)

GAIN SEL

INPUT SEL

MUTE

CLASS

Compact Notebooks

SHDN

HPS

MAX9770

Pin Configuration appears at end of data sheet.

________________________________________________________________ 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.

12 3 4 5 6 7...24

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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	Audio Amplifier, 1.2W, 2 Channel(s), 1 Func, BICMOS, PDSO28, 4.40 MM, TSSOP-28
MAX9791AETI+	MAXIM	类似代替	Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers

与MAX9770EUI相关器件

型号	品牌	获取价格	描述	数据表
MAX9770EUI+	ROCHESTER	获取价格	1.2W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO28, 4.40 MM, TSSOP-28
MAX9770EUI+	MAXIM	获取价格	Audio Amplifier, 1.2W, 2 Channel(s), 1 Func, BICMOS, PDSO28, 4.40 MM, TSSOP-28
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

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