Datasheet > PA4894

PA4894

更新时间： 2024-11-30 07:15:15

品牌	Logo	应用领域
友顺 - UTC		放大器功率放大器
页数	文件大小	规格书
11页	489K
描述
1.8 WATT DIFFERENTIAL AUDIO POWER AMPLIFIER WITH SELECTABLE SHUTDOWN

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PA4894 数据手册

UNISONIC TECHNOLOGIES CO., LTD

PA4894

CMOS IC

1.8 WATT DIFFERENTIAL

AUDIO POWER AMPLIFIER

WITH SELECTABLE

SHUTDOWN

DESCRIPTION

The UTC PA4894 is a differential audio power amplifier,

characterized by its selectable shutdown mode for flexible operation.

Shutdown may be enabled by either logic high or low depending on

the voltage applied on the SD MODE pin and the shutdown mode

features low power consumption.

This device provides customers perfect sound performance by

its high quality audio, moreover, less external components and lower

power dissipation are required.

Operating with a 5.5V power supply, the UTC PA4894 is

capable of driving an 8.0Ω load at a continuous average output of

1.8W under a 10% THD+N. If it works with a 5.0V voltage under the

same load conditions, 1.0W power will be delivered and the

distortion will be less than 0.01%.

The UTC PA4894 incorporates protection circuit to avoid the

click and pop noise, which may occur during the transition state

between turn-on and turn-off.

The UTC PA4894 can be directly connected to a battery without

an LDO since it has perfect PSRR. The UTC PA4894 can be

configured externally with resistors to provide a controlled gain and

with bypass capacitor to provide a controlled turn-on time for more

flexibility.

MSOP-10

FEATURES

* Differential amplification

* Selectable and low current shutdown

mode

* 1.0W/Ch(typ.)into a 8Ω load @5.0V

* Directly connected to the battery due to

excellent PSRR

* Operation supply: 2.2 V-5.5 V

* External controlled gain and turn-on

time configuration

* Circuits for protection

* Thermal overload protection circuit

* “Click and pop” noise protection circuit

* Halogen Free

The UTC PA4894 is suitable for applications, such as portable

electronic devices, PDAs and mobile phones.

ORDERING INFORMATION

Ordering Number

PA4894G-SM2-R

Package

Packing

MSOP-10

Tape Reel

www.unisonic.com.tw

1 of 11

QW-R502-379.A

12 3 4 5 6 7...11

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