Automatic gain control detection circuit

专利名称：Automatic gain control detection circuit发明人：Maeda, Jyoji Patent Division Toshiba

Corp.,Hasegawa, Kazuo Patent DivisionToshiba Corp.,Miyahara, Yasunori PatentDivision Toshiba Corp.

申请号：EP863023.1申请日：19860401公开号：EP0196906A3公开日：190308

专利附图：

摘要：An automatic gain control (AGC) detection circuit. The AGC detection circuit

includes; a current source (13), first to fourth transistors (Q21 to Q24) whose emitters areconnected in common to the current source (13), a reference voltage source (E2) forsupplying the bases of the first and the second transistors (Q21, Q22) with a referencevoltage, input terminal means (11A, 11B) connected to the bases of the third and thefourth transistors (Q23, Q24) for receiving an input signal, a power supply source (E3) forsupplying the first to fourth transistors (Q21 Q24) with a power supply voltage, firstcollector load means (R21) connected between the power supply source (E3) and a nodeconnecting the collectors of the first and second transistors (Q21, Q22) in common,second collector load means (R22) connected between the power supply source (E3) andanother node connecting the collectors of the third and fourth transistors (Q23, Q24) incommon, and an output terminal means (12A, 128) connected between the nodes fortaking out an automatic gain control detection output.

申请人：KABUSHIKI KAISHA TOSHIBA

地址：72, Horikawa-cho, Saiwai-ku Kawasaki-shi, Kanagawa-ken 210 JP

国籍：JP

代理机构：Muir, Ian R.

更多信息请下载全文后查看