《電子技術(shù)應(yīng)用》
您所在的位置:首頁 > 模擬設(shè)計(jì) > 解決方案 > On Semi NCS8353立體聲每路20W D類功率放大方案

On Semi NCS8353立體聲每路20W D類功率放大方案

2011-07-07
作者:On Semi公司

On Semi公司的NCS8353是立體聲每路輸出20W的D類音頻功率放大器,具有可編程" title="可編程">可編程程的功率限制和可選擇的增益: 20 dB, 26 dB, 32 dB, 36 dB。NCS8353的效率高達(dá)86%,每路的輸出功率限制有10W,12W,15W和20W.工作電壓8 V 到26 V,主要用在平板電視機(jī)和有源揚(yáng)聲器。本文介紹了NCS8353主要特性,基本方框圖和8歐姆揚(yáng)聲器典型應(yīng)用電路圖。

Stereo 20W/Ch Class D Audio Power Amplifier with Programmable Power Limit and Selectable Gain

The NCS8353 is a stereo Class D audio power amplifier capable of delivering a continuous power of up to 20 W/ch into an 8ohm bridge tied load (BTL). It can be powered from the existing 24 V rail in Flat Panel Television (FPTV) systems. The high efficiency of the NCS8353, 86%, reduces the requirement of an external heat sink when driving
high power.

The digital power limit feature can program the output power limit at 10 W, 12 W, 15 W, or 20 W/ch, allowing the NCS8353 to be a single system solution in FPTV audio applications.

The NCS8353 includes a digital power limit feature. The digital power limiter quickly reduces the internal gain of the amplifier when high amplitude signals would cause excessive clipping on the output.

The NCS8353 minimizes pop and click artifacts in the audio system by reducing voltage and current transients during power supply cycling, entering or recovering from shutdown, and mute. The shutdown feature reduces the quiescent current draw of the amplifier

to 100u NCS8353uA typical. The mute feature ensures that audio is not present at the output during audio source switching.

The gain of the NCS8353 is programmed via two gain pins, G0 and G1, allowing four selectable ranges: 20 dB, 26 dB, 32 dB, and 36 dB.

Auto recovery short circuit and over temperature protection circuitry are incorporated to ensure device functionality after short circuit and high temperature events occur.

NCS8353主要特性:

Powered from 8 V to 26 V to include FPTV Backlight Supply (24 V ?5%)

Digital Power Limiter Controlled by Two External bits: 10 W, 12 W,

15 W,or 20 W per Channel

♦?Allows for Maximum System Flexibility

♦?Reduces Distortion with Excessive Inputs

Pop and Click Suppression

Selectable Gain: 20 dB, 26 dB, 32 dB, 36 dB

High Efficiency Eliminates the Need for External Heat Sink

Low Supply Current: IQ = 100uA Typical During Shutdown at 12 V

Mute Function

Auto−recovery Short−Circuit Protection

Over Temperature Protection

Fully Differential Architecture

This is a Pb−Free Device

NCS8353典型應(yīng)用:

Flat Panel Television (FPTV)

Powered Speakers

圖1。NCS8353基本方框圖

圖2。NCS8353 8歐姆揚(yáng)聲器典型應(yīng)用電路圖
詳情請(qǐng)見:
http://www.onsemi.cn/pub_link/Collateral/NCS8353-D.PDF



本站內(nèi)容除特別聲明的原創(chuàng)文章之外,轉(zhuǎn)載內(nèi)容只為傳遞更多信息,并不代表本網(wǎng)站贊同其觀點(diǎn)。轉(zhuǎn)載的所有的文章、圖片、音/視頻文件等資料的版權(quán)歸版權(quán)所有權(quán)人所有。本站采用的非本站原創(chuàng)文章及圖片等內(nèi)容無法一一聯(lián)系確認(rèn)版權(quán)者。如涉及作品內(nèi)容、版權(quán)和其它問題,請(qǐng)及時(shí)通過電子郵件或電話通知我們,以便迅速采取適當(dāng)措施,避免給雙方造成不必要的經(jīng)濟(jì)損失。聯(lián)系電話:010-82306118;郵箱:aet@chinaaet.com。
主站蜘蛛池模板: 亚洲最大激情中文字幕 | 99热精品国产麻豆 | 一级全黄生活片 | 99久免费精品视频在线观看2 | 午夜性刺激在线观看视频 | 91精品国产91久久久久久青草 | 精品视频在线播放 | 生活片一级播放免费 | 欧美日韩亚洲区久久综合 | 5060午夜电视网| 欧美成人看片一区二区三区尤物 | 草草影院欧美 | 国产亚洲精品自在线亚洲情侣 | 国产亚洲精品福利在线 | 男女在线无遮挡毛片免费 | 欧美日批 | 深夜福利网站在线 | 黄色小视频免费 | 美国一级做a爰片性色毛片 美国一级做a一级视频 | 欧美做a一级视频免费观看 欧美最猛性xxxxx短视频 | 免费高清资源黄网站在线观看 | 亚洲成a人片在线观看中 | 肉动漫成人免费无遮羞 | 日日摸夜夜添夜夜添97 | 欧美日韩精品一区二区三区四区 | 欧美精品成人一区二区视频一 | 成人免费看吃奶视频网站 | 51免费看片| 偷偷要色偷偷 | 国产专区在线 | 日韩欧美在线不卡 | 色天天综合色天天看 | 日韩在线欧美在线 | 国产一级特黄高清在线大片 | 激情五月综合综合久久69 | 欧美日韩激情一区二区三区 | 高清成人综合 | 九九亚洲精品 | 18性夜影院午夜寂寞影院免费 | 国产剧情乱偷 | 亚洲视屏在线观看 |