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MAX9718BEUB+

更新时间： 2024-09-12 11:14:15
品牌 Logo 应用领域
美信 - MAXIM 放大器功率放大器
页数 文件大小 规格书
26页 615K
描述
Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers

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19-3050; Rev 7; 4/10  
Low-Cost, Mono/Stereo,  
1.4W Differential Audio Power Amplifiers  
8/MAX719  
General Description  
Features  
The MAX9718/MAX9719 differential input audio power  
amplifiers are ideal for portable audio devices with  
internal speakers. The differential input structure  
improves noise rejection and provides common-mode  
rejection. A bridge-tied load (BTL) architecture mini-  
mizes external component count, while providing high-  
quality, power audio amplification. The MAX9718 is a  
single-channel amplifier while the MAX9719 is a dual-  
channel amplifier for stereo systems. Both devices  
deliver 1.4W continuous average power per channel to  
a 4Ω load with less than 1% THD+N while operating  
from a single +5V supply. The devices are available as  
adjustable gain amplifiers or with internally fixed gains  
of 0dB, 3dB, and 6dB to reduce component count.  
o 2.7V to 5.5V Single-Supply Operation  
o Very High -93dB PSRR at 217Hz  
o 1.4W into 4Ω at 1% THD+N (per Channel)  
o Differential Input  
o Internal Fixed Gain to Reduce Component Count  
o Adjustable Gain Option (MAX9718A/H/MAX9719A)  
o 100nA Low-Power Shutdown Mode  
o No Audible Clicks or Pops at Power-Up/Down  
o Improved Performance Pin-Compatible Upgrade  
to LM4895 (MAX9718D/G)  
o 1.8V Logic Compatible  
A shutdown input disables the bias generator and  
amplifiers and reduces quiescent current consumption  
to less than 100nA. The MAX9718 shutdown input can  
be set as active high or active low. These devices fea-  
ture Maxim’s comprehensive click-and-pop suppres-  
sion circuitry that reduces audible clicks and pops  
during startup and shutdown.  
Ordering Information  
PIN-  
PACKAGE  
TOP  
MARK  
PART  
TEMP RANGE  
MAX9718AEBL+TG45 -40°C to +85°C 3 x 3 UCSP  
MAX9718AETB+T  
+ADX  
The MAX9718 is pin compatible with the LM4895,  
and is available in 9-bump UCSP™, 10-pin TDFN, and  
10-pin µMAX® packages. The MAX9719 is available in  
16-pin TQFN, 16-pin TSSOP, and 16-bump UCSP pack-  
ages. Both devices operate over the -40°C to +85°C  
extended temperature range.  
-40°C to +85°C 10 TDFN-EP* +AAV  
+Denotes lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
G45 indicates protective die coating.  
Ordering Information continued at end of data sheet.  
Pin Configurations appear at end of data sheet.  
Applications  
Mobile Phones  
PDAs  
UCSP is a trademark of Maxim Integrated Products, Inc.  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
Portable Devices  
Simplified Block Diagrams  
SINGLE SUPPLY  
2.7V TO 5.5V  
SINGLE SUPPLY  
2.7V TO 5.5V  
OUTL+  
INL+  
OUT+  
IN+  
INL-  
OUTL-  
OUTR+  
INR+  
IN-  
OUT-  
SHDN  
INR-  
OUTR-  
SHDM  
MAX9718  
SHDN  
MAX9719  
________________________________________________________________ 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.  
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