ST ndi Alps amapanga ma apamwamba apamwamba a Class-D apamwamba yamagalimoto

Amatchedwa FDA901, "chip chikufuna kuthandizira kuti pakhale zida zamagetsi zamagalimoto ambiri, zomwe zimagwiritsa ntchito zida zambiri zamagetsi zam'makalasi a D ndi mawu apamwamba a ST's class-AB amplifiers", malinga ndi ST .

Malinga ndi ST imakhala ndi kaphokoso kotsalira kotsalira, kupotoza pang'ono, kuyankha pafupipafupi ndi EMI yotsika. Dongosolo lazidziwitso (sindingapeze pepala lotulutsidwa pagulu) silimayika nyama yambiri m'mafupa awa. Imatchula CISPR25 - Class V (Edition 4) EMI, komanso kuti chosakanizira 24bit D / A Converter chimapereka chiwonetsero cha 115dB S / N ndi 110 dB yamphamvu yosintha - mphamvu yayikulu yotulutsa ndi 28W ku 4Ω ndi 10% THD (Vd = 14.4 V). Pogwiritsa ntchito 15.2V, 4 x 50W imatha kuperekedwa ku 4Ω katundu pa 1kHz. Mphamvu zamagetsi zili mpaka 93%.

Ponena za kuyankha kwapafupipafupi, ST yakwanitsa kuphatikiza chojambula cha LC-low-pass pass mkati mwa ndemanga, "kulola maulalo apamwamba pafupipafupi ndikuchepetsa pang'ono pang'onopang'ono kuchokera ku inductor ndi capacitor quality".

Kuwongolera kudutsa I2C ndi audio kudzera mu I2S, ndikuyika zitsanzo pa 44.1, 48, 96 kapena 192kHz. Kwezani zambiri zomwe zilipo kuti alembe DSP kuti ikwaniritse zowunikira eni eni nthawi yayikulu komanso kuwongolera magwiridwe antchito.

Imabwera mu 12 x 12mm QFP.

ST m'mbuyomu adapanga ma ampplifera a class-AB omwe ali ndi Alps.

"Kwa zaka zambiri, Alpine Electronics yakhala ikugwira ntchito ndi ST, ndikugawana nzeru zofananira," atero a Alps Alpine Sound Meister (dzina lake lenileni) Yukihiro Kobori. "Tigwira ntchito ndi ST kuti tipeze mtundu wa ma CD amtundu wa CD -D wokhoza kukweza mawu omvera m'makampani onse omvera mawu."

Zipangazi zikuwoneka pamitundu 39 ya Alpine 'All New BigX' yotsogola pambuyo pa msika chakumapeto kwa chaka chino, ndipo idzagwiritsidwa ntchito ndi "opanga magalimoto akuluakulu", inatero ST.

Zomwe zimasungidwa zimapezeka kudzera patsamba lino.