Datasheet > EUA4890

EUA4890

更新时间： 2024-09-24 03:34:59

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
14页	406K
描述
1 Watt Audio Power Amplifier

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EUA4890 数据手册

EUA4890

1 Watt Audio Power Amplifier

DESCRIPTION

FEATURES

The EUA4890 is an audio power amplifier designed for

portable communication device applications such as

mobile phone applications. The EUA4890 is capable of

delivering 1.0W of continuous average power to an 8Ω

BTL and with less than 1% distortion (THD+N) from a

5.0V power supply, and 350mW to a 8Ω BTL load from a

3V power supply.

2.5-5.5V operation

65dB PSRR at 217Hz, V_DD=5V

0.1µA ultra low current shutdown mode

Improved pop & click circuitry

No output coupling capacitors, snubber networks or

bootstrap capacitors required

Thermal shutdown protection

The EUA4890 provides high quality audio while requiring

few external components and minimal power consumption.

It features a low-power shutdown mode, which is achieved

Unity-gain stable

External gain configuration capability

BTL output can drive capacitive loads

RoHS compliant and 100% lead(Pb)-free

by driving the

pin with logic low.

SHUTDOWN

The EUA4890 contains circuitry to prevent from ”pop and

click” noise that would otherwise occur during turn-on and

turn-off transitions.

APPLICATIONS

For maximum flexibility, the EUA4890 provides an

externally controlled gain (with resistors), as well as an

externally controlled turn-on and turn-off times (with the

bypass capacitor).

Mobile Phones

PDAs

Portable electronic devices

The EUA4890 is available in a MSOP-8 , 3mm×3mm DFN

package.

Block Diagram

Figure1.

DS4890 Ver 1.7 Dec. 2006

12 3 4 5 6 7...14

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