W-CDMA/N-CDMA Cellular Phone HBT PA Management ICs

General Description The MAX1958/MAX1959 power amplifier (PA) power-management ICs (PMICs) integrate an 800mA, dynamically adjustable step-down converter, a 5mA Rail-to-Rail® operational amplifier (op amp), and a precision temperature sensor to power a heterojunction bipolar transistor (HBT) PA in

W-CDMA/N-CDMA蜂窝电话HBT PA管理IC

MAX1958/MAX1959功率放大器(PA)电源管理IC (PMIC)是为W-CDMA和N-CDMA移动电话内的异质结型双极性晶体管(HBT) PA供电的芯片，集成了一个800mA动态可调的降压控制器、一个5mA满摆幅运算放大器、和一个精密的温度传感器。\n 该高效率、脉宽调制(PWM)、DC-DC buck转换器经过优化，提供保证的800mA输出电流。输出电压是动态控制的，可以产生0.75V至3.4V范围之间(MAX1958)或者1V至3.6V范围之间(MAX1959)的任何固定电压，且在整个电压和电流满量程变化内，建立时间小于30µs。1MHz的PWM开关频率允许使用小型外部元件，而脉 \n• 0.75V至3.4V的动态可调输出电压(MAX1958) \n• 保证800mA输出电流 \n• 低静态电流 \n• PWM模式时3mA的电源电流 \n• 1MHz固定频率PWM工作模式 \n• 无软启动所需要的外部肖特基二极管 \n• 5mA满摆幅输出 \n• 800kHz增益带宽积 \n• 温度传感器 \n• -40°C至+125°C额定温度范围 \n• 20引脚、0.8mm高度(最大)的薄型QFN (5mm x 5mm)封装;

W-CDMA/N-CDMA Cellular Phone HBT PA Management ICs

General Description The MAX1958/MAX1959 power amplifier (PA) power-management ICs (PMICs) integrate an 800mA, dynamically adjustable step-down converter, a 5mA Rail-to-Rail® operational amplifier (op amp), and a precision temperature sensor to power a heterojunction bipolar transistor (HBT) PA in

PLL/Multibit DAC

PRODUCT OVERVIEW The AD1959 is a complete high-performance single-chip stereo digital audio playback system. It is comprised of a multibit sigma delta modulator, digital interpolation filters, and analog output drive circuitry with an on-board dual PLL clock generator.

PLL/Multibit DAC

PRODUCT OVERVIEW The AD1959 is a complete high-performance single-chip stereo digital audio playback system. It is comprised of a multibit sigma delta modulator, digital interpolation filters, and analog output drive circuitry with an on-board dual PLL clock generator.

PLL/Multibit DAC

PRODUCT OVERVIEW The AD1959 is a complete high-performance single-chip stereo digital audio playback system. It is comprised of a multibit sigma delta modulator, digital interpolation filters, and analog output drive circuitry with an on-board dual PLL clock generator.

NPN EPITAXIAL PLANAR TRANSISTOR

Description The HSC1959 is designed for audio frequency Low power amplifier applications. Features • Excellent hFE Linearity

4.5A, 500kHz Step-Down Switching Regulator

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