MAX9770ETI

更新时间： 2024-09-15 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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技术参数
数据手册
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MAX9770ETI 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	QFN	包装说明：	5 X 5 MM, 0.80 MM HEIGHT, QFN-28
针数：	28	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.33.00.01
风险等级：	5.75	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：	S-XQCC-N28
JESD-609代码：	e4	长度：	5 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：	UNSPECIFIED
封装代码：	HVQCCN	封装等效代码：	LCC28,.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）：	245	电源：	3/5 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：	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：	NICKEL PALLADIUM GOLD
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

MAX9770ETI 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

中文翻译

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MAX9770ETI 替代型号

型号	品牌	替代类型	描述	数据表
MAX9770ETI+	MAXIM	功能相似	Audio Amplifier, 1.2W, 2 Channel(s), 1 Func, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE,
MAX9770EUI+	MAXIM	功能相似	Audio Amplifier, 1.2W, 2 Channel(s), 1 Func, BICMOS, PDSO28, 4.40 MM, TSSOP-28
MAX9702ETI+	MAXIM	功能相似	1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone A

与MAX9770ETI相关器件

型号	品牌	获取价格	描述	数据表
MAX9770ETI+	MAXIM	获取价格	Audio Amplifier, 1.2W, 2 Channel(s), 1 Func, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE,
MAX9770ETI-T	MAXIM	获取价格	Audio Amplifier, 1.2W, 2 Channel(s), 1 Func, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, QFN-28
MAX9770EUI	MAXIM	获取价格	1.2W Low-EMI, Filterless, Mono Class D Amplifier with Stereo DirectDrive Headphone Amplifi
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,

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