The AD8322 comprises a digitally controlled variable attenuator of 0 dB to -42 dB, which is preceded by a low noise, fixed gain buffer and is followed by a low distortion high power amplifier. When used in a DOCSIS modem application the AD8322 works with the attenuator available on some demodulators to support the 50 dB range required by DOCSIS. The AD8322 accepts a differential or single-ended input signal. The output is specified for driving a 75 Ohm load, such as coaxial cable, although the AD8322 is capable of driving other loads.
An evaluation board is available for this product and may be ordered using the following product number AD8322-EVAL.
------百度翻譯-----
ad8322是一種低成本的數(shù)字控制可變增益放大器的同軸電纜調(diào)制解調(diào)器驅(qū)動(dòng)等應(yīng)用而設(shè)計(jì)的微小病變腎病- DOCSIS上行線標(biāo)準(zhǔn)優(yōu)化。一個(gè)8位串行字在42分貝范圍內(nèi)決定所需的輸出增益,使增益變化為6分貝/ LSB。
的ad8322包括數(shù)字控制可變衰減器的0分貝至42分貝,這是之前有一個(gè)低噪聲,固定增益緩沖器,是由高功率低失真放大器。當(dāng)使用一個(gè)DOCSIS調(diào)制解調(diào)器應(yīng)用ad8322作品對解調(diào)器可用衰減器來支持所需的DOCSIS 50 dB范圍。的ad8322接受差分或單端輸入信號。輸出驅(qū)動(dòng)75歐姆的負(fù)載指定,例如同軸電纜,雖然ad8322能夠驅(qū)動(dòng)其他負(fù)載。
評估板可用此產(chǎn)品可使用以下產(chǎn)品數(shù)量ad8322-eval有序。