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MAX9879ERV+T

更新时间： 2024-11-25 13:11:11
品牌 Logo 应用领域
美信 - MAXIM 放大器
页数 文件大小 规格书
31页 526K
描述
Volume Control Circuit,

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中文翻译

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MAX9879ERV+T 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：ActiveReach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
Factory Lead Time：20 weeks风险等级：5.72
Is Samacsys：N商用集成电路类型：VOLUME CONTROL CIRCUIT
湿度敏感等级：1峰值回流温度（摄氏度）：NOT SPECIFIED
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

MAX9879ERV+T 数据手册

 浏览型号MAX9879ERV+T的Datasheet PDF文件第2页浏览型号MAX9879ERV+T的Datasheet PDF文件第3页浏览型号MAX9879ERV+T的Datasheet PDF文件第4页浏览型号MAX9879ERV+T的Datasheet PDF文件第5页浏览型号MAX9879ERV+T的Datasheet PDF文件第6页浏览型号MAX9879ERV+T的Datasheet PDF文件第7页 
19-4436; Rev 0; 2/09  
Stereo Class D Audio Subsystem  
with DirectDrive Headphone Amplifier  
MAX879  
General Description  
Features  
The MAX9879 combines a high-efficiency stereo Class D  
audio power amplifier with a stereo capacitor-less  
DirectDrive® headphone amplifier. Maxim’s filterless class  
D amplifiers with active emissions limiting technology pro-  
vide Class AB performance with Class D efficiency.  
♦ Better than 9dB Margin Under EN 55022 Class B  
Limits with No Filter Components  
♦ Low RF Susceptibility Design Rejects TDMA  
Noise from GSM Radios  
♦ Input Mixer with User Defined Input Mode  
The Class D power amplifier delivers up to 715mW from  
a 3.7V supply into an 8Ω load with 88% efficiency to  
extend battery life. The filterless modulation scheme  
combined with active emission limiting circuitry and  
spread-spectrum modulation greatly reduces EMI while  
eliminating the need for output filtering used in tradition-  
al Class D devices.  
The headphone amplifier delivers up to 58mW from a  
3.7V supply into a 16Ω load. Maxim’s patented  
DirectDrive architecture produces a ground-referenced  
output from a single supply, eliminating the need for  
large DC-blocking capacitors, saving cost, space and  
component height.  
The device utilizes a user-defined input architecture,  
three preamplifier gain settings, an input mixer, volume  
control, comprehensive click-and-pop suppression, and  
I2C control. A bypass mode feature disables the integrat-  
ed Class D amplifier and utilizes an internal DPST switch  
to allow an external amplifier to drive the speaker that is  
connected at the outputs of the MAX9879.  
♦ Stereo 715mW Speaker Output (R = 8Ω,  
L
V
DD  
= 3.7V)  
♦ Stereo 58mW Headphone Output (16Ω,  
V
= 3.7V)  
DD  
♦ Low 0.04% THD+N at 1kHz (Class D Power  
Amplifier)  
♦ Low 0.018% THD+N at 1kHz (Headphone  
Amplifier)  
♦ 88% Efficiency (R = 8Ω, P  
= 750mW)  
L
OUT  
♦ 1.6Ω Analog Switch for Speaker Amplifier Bypass  
♦ High Speaker Amplifier PSRR (72dB at 217Hz)  
♦ High Headphone Amplifier PSRR (84dB at 217Hz)  
♦ I2C Control  
♦ Hardware and Software Shutdown Mode  
♦ Ultra-Low Click and Pop  
♦ Robust Design with Current and Thermal  
Protection  
♦ Available in Space-Saving Package  
5x6 UCSP (2.5mm x 3mm)  
The MAX9879 is available in a thermally efficient,  
space-saving 30-bump UCSP™ package.  
Ordering Information  
Applications  
Portable Multimedia Players  
PART  
TEMP RANGE  
PIN-PACKAGE  
Cell Phones  
MAX9879ERV+  
-40°C to +85°C  
30 UCSP (5x6)  
DirectDrive is a registered trademark of Maxim Integrated  
Products, Inc.  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
UCSP is a trademark of Maxim Integrated Products, Inc.  
Pin Configuration  
Simplified Block Diagram  
TOP VIEW  
(BUMP SIDE DOWN)  
SINGLE SUPPLY  
2.7V TO 5.5V  
2
3
4
1
5
6
A
VOLUME  
PREAMPLIFIER  
CONTROL  
C1P  
C1N  
OUTL- PVDDL  
OUTL+  
RXIN+  
PGNDR OUTR-  
PGNDR PVDDR  
MIXER  
B
RXIN-  
PGNDL  
VOLUME  
2
I C  
CONTROL  
INTERFACE  
C
D
E
V
GND  
BIAS  
GND  
INB1  
INB2  
GND  
INA1  
INA2  
GND  
SCL  
OUTR+  
SDA  
SS  
HPL  
HPR  
BYPASS  
V
SHDN  
V
DD  
CCIO  
MAX9879  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...31

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