全极霍尔开关

DH248是一款基于混合信号CMOS技术的全极型霍尔效应传感器，这款IC采用了先进的斩波稳定技术，因而能够提供准确而稳定的磁开关点。\n   在电路设计上，DH248提供了一个内嵌的受控时钟机制来为霍尔器件和模拟信号处理电路提供时钟源，同时这个受控时钟机制可以发出控制信号使得消耗电流较大的电路周期性的进入“休眠”模式；同样通过这个机制，芯片被周期性地“唤醒”并且根据预定好的磁场强度阈值检测外界穿过霍尔器件磁场强度的大小。如果磁通密度高于“工作点”阈值或者低于“释放点”阈值，则开漏输出晶体管被驱动并锁存成与之相对应的状态。而在“休眠”周期中，输出晶体管被锁定在其先前的状态下。在电池供电应用中，这

HALLWAFER

欣凯祥

Quad 741 Op Amps LM149 Wide Band Decompensated (AV MIN = 5)

文件：388.73 Kbytes 页数：15 Pages

NSC

国半

FOUR UA741 QUAD BIPOLAR OPERATIONAL AMPLIFIERS

DESCRIPTION The LM148 consists of four independent, high gain internally compensated, low power operational amplifiers which have been designed to provide functional characteristics identical to those of the familiar UA741 operational amplifier. In addition the total supply current for all four a

文件：139.85 Kbytes 页数：9 Pages

STMICROELECTRONICS

意法半导体

Silicon Complementary Transistors Darlington Power Amplifier

Description: The NTE247 (NPN) and NTE248 (PNP) are silicon complementary Darlington transistors in a TO3 type case designed for general–purpose amplifier and low–frequency switching applications. Features: • High DC Current Gain: hFE = 3500 Typ @ IC = 5A • Collector–Emitter Sustainin

文件：26.37 Kbytes 页数：2 Pages

NTE