电话机电路

• 描述: 单片电话机通话电路，合并了必 需的放大器、衰减器和几种控制 功能，包括发送和接收衰减器、 背景噪声电平检测系统和一个衰 减器控制系统，对发送和接收电 平好于背景噪声做出反应。配上 外围阻容器件可做成一种高品质 的免提手柄式扬声电话系统。\n• 工作电压范围: 6V ～ 11V\n• 接受衰减器 增益: 40dB ～ 48dB\n• 发送衰减器 增益: 40dB ～ 48dB\n• 功率放大器 增益: 33dB ～ 35dB\n• MIC 放大器 增益: 32.5dB ～ 35dB\n• 封装形式: SOP28\n\n\n\n;

Silicore

芯谷科技

VOICE SWITCHED SPEAKER-PHONE CIRCUIT

DESCRIPTION The UTC MC34018 speaker-phone integrated circuit incorporates the necessary functions to produce a high quality hands-free speaker-phone system. The applications include household and office speaker-phones, intercom systems, hand free kit for mobile phones, and others. FEATURES

文件：182.46 Kbytes 页数：14 Pages

UTC

友顺

L to S BAND LOW NOISE AMPLIFIER N-CHANNEL HJ-FET

DESCRIPTION NE34018 is a n-channel HJ-FET housed in MOLD package. FEATURES • Low noise figure NF = 0.6 dB TYP. at f = 2 GHz • High associated gain Ga = 16 dB TYP. at f = 2 GHz • Gate width: Wg = 400 μm • 4 pins super mini mold • Tape & reel packaging only available

文件：114.81 Kbytes 页数：16 Pages

NEC

瑞萨

VOICE SWITCHED SPEAKER-PHONE CIRCUIT

DESCRIPTION The UTC MC34018 speaker-phone integrated circuit incorporates the necessary functions to produce a high quality hands-free speaker-phone system. The applications include household and office speaker-phones, intercom systems, hand free kit for mobile phones, and others. FEATURES

文件：182.46 Kbytes 页数：14 Pages

UTC

友顺