Datasheet > EUA2011HIR1

EUA2011HIR1

更新时间： 2024-09-24 02:54:31

品牌	Logo	应用领域
德信 - EUTECH		放大器功率放大器
页数	文件大小	规格书
16页	571K
描述
3-W Mono Filterless Class-D Audio Power Amplifier

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EUA2011HIR1 数据手册

EUA2011

3-W Mono Filterless Class-D

Audio Power Amplifier

DESCRIPTION

FEATURES

The EUA2011 is a high efficiency, 3W mono class-D audio

power amplifier. A low noise, filterless PWM architecture

eliminates the output filter, reducing external component

count, system cost, and simplifying design.

Operating in a single 5V supply, EUA2011 is capable of

driving 4Ω speaker load at a continuous average output of

3W/10% THD+N or 2W/1% THD+N. The EUA2011 has

high efficiency with speaker load compared to a typical

class AB amplifier. With a 3.6V supply driving an 8Ω

speaker , the efficiency for a 400mW power level is 88%.

In cellular handsets, the earpiece, speaker phone, and

melody ringer can each be driven by the EUA2011. The

gain of EUA2011 is externally configurable which allows

independent gain control from multiple sources by

summing signals from separate sources.

Unique Modulation Scheme Reduces EMI Emissions

Efficiency at 3.6V With an 8-Ω Speaker:

−

88% at 400 mW

80% at 100 mW

Low 2.4-mA Quiescent Current and

0.5-µA Shutdown Current

2.5V to 5.5V Wide Supply Voltage

Shutdown Pin Compatible with 1.8V Logic GPIO

Optimized PWM Output Stage Eliminates

LC Output Filter

Improved PSRR (−72 dB) Eliminates Need for a

Voltage Regulator

Fully Differential Design Reduces RF Rectification

and Eliminates Bypass Capacitor

Improved CMRR Eliminates Two Input

Coupling Capacitors

The EUA2011 is available in space-saving WCSP and

Internally Generated 250-kHz Switching

Frequency

TDFN packages.

Integrated Pop and Click Suppression Circuitry

1.5mm× 1.5mm Wafer Chip Scale Package (WCSP)

and 3mm× 3mm TDFN-8 package

RoHS compliant and 100% lead(Pb)-free

APPLICATIONS

Typical Application Circuit

Ideal for Wireless or cellular Handsets and PDAs

Figure1.

DS2011 Ver 1.1 Dec. 2007

12 3 4 5 6 7...16

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