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MAX9705DEUB+ PDF预览

MAX9705DEUB+

更新时间： 2024-09-23 23:14:43
品牌 Logo 应用领域
美信 - MAXIM 音频放大器
页数 文件大小 规格书
20页 2358K
描述
2.3W, Ultra-Low-EMI, Filterless, Class D Audio Amplifier

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MAX9705DEUB+ 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：TSSOP包装说明：TSSOP, TSSOP10,.19,20
针数：10Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.83标称带宽：22 kHz
商用集成电路类型：AUDIO AMPLIFIER增益：20 dB
JESD-30 代码：S-PDSO-G10JESD-609代码：e3
长度：3 mm信道数量：1
功能数量：1端子数量：10
最高工作温度：85 °C最低工作温度：-40 °C
标称输出功率：2.3 W封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP10,.19,20
封装形状：SQUARE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：7 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：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：3 mm

MAX9705DEUB+ 数据手册

 浏览型号MAX9705DEUB+的Datasheet PDF文件第2页浏览型号MAX9705DEUB+的Datasheet PDF文件第3页浏览型号MAX9705DEUB+的Datasheet PDF文件第4页浏览型号MAX9705DEUB+的Datasheet PDF文件第5页浏览型号MAX9705DEUB+的Datasheet PDF文件第6页浏览型号MAX9705DEUB+的Datasheet PDF文件第7页 
19-3405; Rev 0; 7/05  
2.3W, Ultra-Low-EMI, Filterless,  
Class D Audio Amplifier  
General Description  
Features  
♦ Filterless Amplifier Passes FCC-Radiated  
The MAX9705 3rd-generation, ultra-low EMI, mono, Class  
D audio power amplifier provides Class AB performance  
with Class D efficiency. The MAX9705 delivers 2.3W into  
a 4Ω load and offers efficiencies above 85%. Active  
emissions limiting (AEL) circuitry greatly reduces EMI by  
actively controlling the output FET gate transitions under  
all possible transient output-voltage conditions. AEL pre-  
vents high-frequency emissions resulting from conven-  
tional Class D free-wheeling behavior in the presence of  
an inductive load. Zero dead time (ZDT) technology  
maintains state-of-the-art efficiency and THD+N perfor-  
mance by allowing the output FETs to switch simultane-  
ously without cross-conduction. A patented spread-  
spectrum modulation scheme eliminates the need for out-  
put filtering found in traditional Class D devices. These  
design concepts reduce an application’s component  
count and extend battery life.  
Emissions Standards with 24in of Cable  
♦ Unique Spread-Spectrum Mode and Active  
Emissions Limiting (AEL) Achieves Better than  
20dB Margin Under FCC Limits  
♦ Zero Dead Time (ZDT) H-Bridge Maintains State-  
of-the-Art Efficiency and THD+N  
♦ Simple Master-Slave Setup for Stereo Operation  
♦ Up to 90% Efficiency  
♦ 2.3W into 4Ω (1% THD+N)  
♦ Low 0.02% THD+N (P  
= 1W, V  
= 5.0V)  
OUT  
DD  
♦ High PSRR (75dB at 217Hz)  
♦ Integrated Click-and-Pop Suppression  
♦ Low Quiescent Current (5.4mA)  
♦ Low-Power Shutdown Mode (0.3µA)  
♦ Short-Circuit and Thermal-Overload Protection  
The MAX9705 offers two modulation schemes: a fixed-  
frequency (FFM) mode and a spread-spectrum (SSM)  
mode that further reduces EMI-radiated emissions due to  
the modulation frequency. The MAX9705 oscillator can  
be synchronized to an external clock through the SYNC  
input, allowing the switching frequency to be externally  
defined. The SYNC input also allows multiple MAX9705s  
to be cascaded and frequency locked, minimizing inter-  
ference due to clock intermodulation. The device utilizes  
a fully differential architecture, a full-bridged output, and  
comprehensive click-and-pop suppression. The gain of  
the MAX9705 is set internally (MAX9705A: 6dB,  
MAX9705B: 12dB, MAX9705C: 15.6dB, MAX9705D:  
20dB), further reducing external component count.  
♦ Available in Thermally Efficient, Space-Saving  
Packages  
10-Pin TDFN (3mm x 3mm x 0.8mm)  
10-Pin µMAX  
12-Bump UCSP (1.5mm x 2mm x 0.6mm)  
♦ Pin-for-Pin Compatible with the MAX9700 and  
MAX9712  
Ordering Information  
PIN-  
PACKAGE  
TOP  
MARK  
PART  
TEMP RANGE  
MAX9705AETB+T  
MAX9705AEUB+  
MAX9705AEBC+T  
MAX9705BETB+T  
MAX9705BEUB+  
MAX9705BEBC+T  
-40oC to +85oC 10 TDFN-10  
-40oC to +85oC 10 µMAX  
-40oC to +85oC 12 UCSP-12  
-40oC to +85oC 10 TDFN-10  
-40oC to +85oC 10 µMAX  
-40oC to +85oC 12 UCSP-12  
ACY  
—
The MAX9705 is available in 10-pin TDFN (3mm x 3mm x  
ACH  
ACX  
—
®
0.8mm), 10-pin µMAX , and 12-bump UCSP™ (1.5mm x  
2mm x 0.6mm) packages. The MAX9705 is specified over  
the extended -40°C to +85°C temperature range.  
ACG  
Ordering Information continued at end of data sheet.  
+Denotes lead-free package.  
Applications  
EMI Spectrum Diagram  
Cellular Phones  
PDAs  
MP3 Players  
Portable Audio  
50.0  
45.0  
40.0  
FCC EMI LIMIT  
35.0  
30.0  
25.0  
20.0  
15.0  
10.0  
5.0  
Selector Guide appears at end of data sheet.  
MAXIM'S NEW ULTRA-LOW  
OUTPUT SPECTRUM  
30.0  
60.0 80.0 100.0 120.0 140.0 160.0 180.0 200.0 220.0 240.0 260.0 280.0 300.0  
FREQUENCY (MHz)  
µMAX is a registered trademark and UCSP is a trademark of  
Maxim Integrated Products, Inc.  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...20

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