BL34018

GENERAL DESCRIPTION The BL34018 Speakerphone integrated circuit Incorporates the necessary amplifiers, attenuators, and control functions to produce a high quality hands free speakerphone system. Include are a microphone amplifier, a power audio amplifier for the spea

通讯终端应用电路：电话机,免提通话

BL34018合并了必需的放大器、衰减器和几种控制功能而设计成的一种高品质免提通话电路 ·单片集成必须的电平检测和用于免提手柄式电话机的衰减控制器\n·背景噪音控制\n·动态工作范围大\n·有片选和电源稳压功能\n·典型输出功率为100mw（负载为25欧姆），具有自动增益控制\n·线性音量控制功能;

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

GaAs HJ-FET L TO S BAND LOW NOISE AMPLIFIER (New Plastic Package)

DESCRIPTION NECs NE34018 is a low cost gallium arsenide Hetero-Junction FET housed in a miniature (SOT-343) plastic surface mount package. The device is fabricated using ion implantation for improved RF and DC performance, reliability, and uniformity. Its low noise figure, high gain, small size a

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

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