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MA12070

更新时间： 2024-09-25 11:15:51
品牌 Logo 应用领域
英飞凌 - INFINEON /
页数 文件大小 规格书
86页 1751K
描述
2x80W 超高效全集成式音频功放 IC，带模拟输入

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中文翻译

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MA12070 数据手册

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MA12070  
Filterless and High-Efficiency +4V to +26V  
Audio Amplifier with Analog Input  
Description  
Features  
The MA12070 is a super-efficient audio power amplifier  
based on proprietary multi-level switching technology.  
It supports a 4-26V supply voltage range, allowing it to  
be used in many different applications.  
•
Proprietary Multi-level Switching Technology  
◦
3-level and 5-level modulation  
◦
◦
Low EMI emission  
Filterless amplification  
Multi-level switching enables very low power loss  
during operation. In addition, it allows the amplifier to  
be used in filterless configurations at full rated power  
in a wide range of audio products.  
◦
Digital Power Management Algorithm  
•
•
High Power Efficiency (PMP4)  
◦
<160mW Idle power dissipation (26V PVDD,  
all channels switching)  
The MA12070 features an embedded digital power  
management scheme. The power management  
algorithm dynamically adjusts switching frequency and  
modulation to optimize power loss and EMI across the  
output power range.  
◦
◦
>80% Efficiency at 2W power (1kHz sine, 8Ω)  
>91% Efficiency at Full Power (1kHz sine, 8Ω)  
Audio Performance (PMP2)  
◦
>110dB DNR (A-w, rel. to 1% THD+N power  
level)  
A 4th order feedback loop ensures low distortion and a  
high PSRR.  
◦
◦
45µV output integrated noise (A-w)  
0.004% THD+N at high output levels  
The MA12070 operates from a single power stage  
supply voltage (PVDD) and a +5V system supply voltage  
(DVDD, AVDD).  
•
•
4th Order Feedback Error Control  
◦
◦
High suppression of supply disturbance  
HD audio quality  
Highly flexible output stage configurations are offered,  
ranging from four single-ended outputs to a single  
parallel-BTL output.  
Supply Voltages: +4V to +26V (PVDD) and +5V  
(A/DVDD)  
•
•
Selectable Gain (20dB/26dB)  
The MA12070 features protection against DC, short-  
2x30W continuous output power (RL = 8Ω at 22V,  
PMP4, 10% THD+N level, without heatsink)  
circuits,  
over-temperature  
and  
under-voltage  
situations.  
•
2×80W peak output power (26V PVDD, RL = 4Ω,  
10% THD+N level)  
Flexible “Power Mode Profiles” allow the user to utilize  
the multi-level switching technique for very low power  
loss or very high audio performance.  
•
•
2.0, 2.1, 4.0, 1.0 Output Stage Configurations  
Protection  
◦
◦
◦
◦
◦
◦
Under-voltage-lockout  
Device configuration is controlled through an I2C  
interface as well as dedicated control pins.  
Over-temperature warning/error  
Short-circuit/overload protection  
Power stage pin-to-pin short-circuit  
Error-reporting through serial interface (I2C)  
DC protection  
Applications  
•
•
•
•
•
Battery Operated Speakers  
Wireless and Docking Speakers  
Soundbars  
•
•
I2C control (four selectable addresses)  
Heatsink free operation with EPAD-down package  
Package  
Multiroom Systems  
•
64-pin QFN Package with exposed thermal pad  
(EPAD) and Lead-free Soldering  
Home Theater Systems  
Datasheet  
www.infineon.com  
Please read the Important Notice and Warnings at the end of this document  
page 1 of 86  
V 1.0  
2018-07-17  
1234567...86

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