按分类查找:

  • 简单、高效USB电源管理IC解决方案

      Linear Technology offers a variety of devices that simplifyconverting power from a USB cable, but the LTC®3455represents the highest level of functional integration yet. The LTC3455 seamlessly manages power flowbetween an AC adapter, USB cable and Li-ion battery,while complying with U ...

    /dl/24270.html

    标签: USB 电源管理IC 方案

    上传时间: 2013-11-02

    上传用户:名爵少年

  • Circuitry for Single Cell Operation

      Portable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitoring and other applicationsare good candidates for batteryoperation. In some circumstances,due to space, power or reliability considerations,it is pre ...

    /dl/24408.html

    标签: Circuitry Operation Single Cell

    上传时间: 2013-10-30

    上传用户:hz07104032

  • 基于MT8880的一键拨号电话系统设计

      针对煤矿井下调度及紧急救援系统的需求,以DTMF编解码模块为核心,设计了具有自动拨号功能的新型电话系统。该系统利用MT8880对DTMF信号的编解码功能实现一键拨号和远程设置,通过检测振铃和忙音信号,完成自动摘机和挂机过程,配合AGC等外围电路达到话音清晰流畅的效果。   Abstract:   To meet the demand f ...

    /dl/29090.html

    标签: 8880 MT 拨号电话 系统设计

    上传时间: 2014-11-18

    上传用户:ly1994

  • 基于ATmega16的简易示波器设计

    介绍了以AVR单片机ATmega16为核心,采用前端信号调理电路、程控增益放大器以及波形显示LCD(GDM12864A)实现的一个简易示波器。并给出该系统设计的硬件和软件设计方案。 Abstract:  Abstract:This paper introduces an easy digital storage oscilloscope based on the AVR microcontroller ATmega16,especially em ...

    /dl/29200.html

    标签: ATmega 16 简易示波器

    上传时间: 2013-10-13

    上传用户:ccccccc

  • MT8870D DTMF解码芯片

    Features• Complete DTMF Receiver• Low power consumption• Internal gain setting amplifier• Adjustable guard time• Central office quality• Power-down mode• Inhibit mode• Backward compatible withMT8870C/MT8870C-1Applications• Receiver system for Bri ...

    /dl/30328.html

    标签: 8870D 8870 DTMF MT

    上传时间: 2013-11-20

    上传用户:mpquest

  • NEC 16位MCU参考手册

    NEC 16位MCU参考手册 The 78K0R/IC3 is a 16-bit single-chip microcontroller that uses a 78K0R CPU core and incorporates peripheral functions, such as ROM/RAM, a multi-function timer, a multi-function serial interface, an A/D converter, a programmable gain amplifier (PGA), a comparator, a real-time cou ...

    /dl/30589.html

    标签: NEC MCU 参考手册

    上传时间: 2013-11-02

    上传用户:努力努力再努力

  • PCA9541 2 to 1 I2C-bus master

    The PCA9541 is a 2-to-1 I2C-bus master selector designed for high reliability dual masterI2C-bus applications where system operation is required, even when one master fails orthe controller card is removed for maintenance. The two masters (for example, primaryand back-up) are located on separate I2C ...

    /dl/31003.html

    标签: master C-bus 9541 PCA

    上传时间: 2013-10-09

    上传用户:3294322651

  • 单片机外围线路设计

    当拿到一张CASE单时,首先得确定的是能用什么母体才能实现此功能,然后才能展开对外围硬件电路的设计,因此首先得了解每个母体的基本功能及特点,下面大至的介绍一下本公司常用的IC:单芯片解决方案• SN8P1900 系列–  高精度 16-Bit  模数转换器–  可编程运算放大器 (PGIA)•  信号 ...

    /dl/31398.html

    标签: 单片机 线路设计

    上传时间: 2013-10-21

    上传用户:jiahao131

  • PCB设计经典资料

    本文将接续介绍电源与功率电路基板,以及数字电路基板导线设计。宽带与高频电路基板导线设计a.输入阻抗1MHz,平滑性(flatness)50MHz 的OP增幅器电路基板图26 是由FET 输入的高速OP 增幅器OPA656 构成的高输入阻抗OP 增幅电路,它的gain取决于R1、R2,本电路图的电路定数为2 倍。此外为改善平滑性特别追加设置可以加大噪讯ga ...

    /dl/40423.html

    标签: PCB

    上传时间: 2013-11-09

    上传用户:z754970244

  • 频谱仪测噪声系数

    因为测量系统都用50欧姆, 如非特指, 以下所说的Gain均指功率增益(Power Gain). 但是一般的接收机的输入输出并非50欧姆, 因此有必要考虑电压增益(Voltage Gain).

    /dl/41874.html

    标签: 频谱仪 噪声系数

    上传时间: 2015-01-03

    上传用户:1318695663