SI-PNP 60 V 0,6 A 0,6 W 100 MHZ
标签: 2N2905
上传时间: 2021-07-02
上传用户:xiangshuai
EN 300220-1V2.4.1 Electromagnetic compatibility and Radio spectrum Matters (ERM);Short Range Devices (SRD);Radio equipment to be used in the 25 MHZ to 1 000 MHZ frequency range with power levels ranging up to 500 mW; Part 1: Technical characteristics and test methods
标签: EMC
上传时间: 2021-07-25
上传用户:beiyouxia
NUC980 是新唐推出的工业控制物联网系列处理器. NUC980 系列采用 ARM926EJ-S 核心,执行速度高达 300 MHZ ,有 LQFP64、LQFN128、LQFN216 3 种封装,堆迭 64 MB 或 128 MB DDR-II 记忆体于同一封装。该文档是 nuc980 硬件设计手册,包含如下内容:1、NUC980 电源部分电路设计2、NUC980 复位部分电路设计3、NUC980 上电、下电时序4、时钟电路设计5、EBI(外部总线接口)、ADC、USB、网络、摄像头、QSPI、CAN、SPI、I2S、uart等外设原理图、layout 设计。文件末尾还有参考设计原理图
上传时间: 2021-10-27
上传用户:默默
Wherever possible the overall technique used for this series will be "definition by example" withgeneric formulae included for use in other applications. To make stability analysis easy we will usemore than one tool from our toolbox with data sheet information, tricks, rules-of-thumb, SPICESimulation, and real-world testing all accelerating our design of stable operational amplifier (op amp)circuits. These tools are specifically targeted at voltage feedback op amps with unity-gain bandwidths<20 MHZ, although many of the techniques are applicable to any voltage feedback op amp. 20 MHZ ischosen because as we increase to higher bandwidth circuits there are other major factors in closing theloop: such as parasitic capacitances on PCBs, parasitic inductances in capacitors, parasitic inductancesand capacitances in resistors, etc. Most of the rules-of-thumb and techniques were developed not justfrom theory but from the actual building of real-world circuits with op amps <20 MHZ.
标签: 运算放大器
上传时间: 2021-11-01
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黑金CYCLONE4 EP4CE6F17C8 FPGA开发板ALTIUM设计硬件工程(原理图+PCB+AD集成封装库),Altium Designer 设计的工程文件,包括完整的原理图及PCB文件,可以用Altium(AD)软件打开或修改,可作为你产品设计的参考。集成封装器件型号列表:Library Component Count : 50Name Description----------------------------------------------------------------------------------------------------1117-3.3 24LC04B_0 4148 BAV99 CAP NP_Dup2CAP NP_Dup2_1 CAP NP_Dup2_2CP2102_0 C_Dup1 C_Dup1_1C_Dup2 C_Dup3 C_Dup4 C_Dup4_1 Circuit Breaker Circuit BreakerConnector 15 Receptacle Assembly, 15-Pin, Sim Line ConnectorDS1302_8SO EC EP4CE6F17C8 Cyclone IV Family FPGA, 2V Core, 179 I/O Pins, 2 PLLs, 256-Pin FBGA, Speed Grade 8, Commercial GradeEP4CE6F17C8_1 Cyclone IV Family FPGA, 2V Core, 179 I/O Pins, 2 PLLs, 256-Pin FBGA, Speed Grade 8, Commercial GradeFuse 2 FuseHEX6HY57651620/SO_0 Header 2 Header, 2-PinHeader 9X2 Header, 9-Pin, Dual rowINDUCTOR JTAG-10_Dup1 KEYB LED LED_Dup1 M25P16-VMN3PB 16 Mb (x1) Automotive Serial NOR Flash Memory, 75 MHZ, 2.7 to 3.6 V, 8-pin SO8 Narrow (MN), TubeMHDR2X20 Header, 20-Pin, Dual rowMiniUSBB OSCPNP R RESISTOR RN RN_Dup1 R_Dup1 R_Dup2 R_Dup3 R_Dup5R_Dup6 SD SPEAKERSRV05-4SW KEY-DPDT ZTAbattery
标签: 黑金 cyclone4 ep4ce6f17c8 fpga
上传时间: 2021-12-22
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STM32L053C8T6数据手册Features • Ultra-low-power platform – 1.65 V to 3.6 V power supply – -40 to 125 °C temperature range – 0.27 µA Standby mode (2 wakeup pins) – 0.4 µA Stop mode (16 wakeup lines) – 0.8 µA Stop mode + RTC + 8 KB RAM retention – 139 µA/MHZ Run mode at 32 MHZ – 3.5 µs wakeup time (from RAM) – 5 µs wakeup time (from Flash) • Core: ARM® 32-bit Cortex®-M0+ with MPU – From 32 kHz up to 32 MHZ max. – 0.95 DMIPS/MHZ • Reset and supply management – Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds – Ultralow power POR/PDR – Programmable voltage detector (PVD) • Clock sources – 1 to 25 MHZ crystal oscillator – 32 kHz oscillator for RTC with calibration – High speed internal 16 MHZ factory-trimmed RC (+/- 1%) – Internal low-power 37 kHz RC – Internal multispeed low-power 65 kHz to 4.2 MHZ RC – PLL for CPU clock • Pre-programmed bootloader – USART, SPI supported • Development support – Serial wire debug supported • Up to 51 fast I/Os (45 I/Os 5V tolerant) • Memories – Up to 64 KB Flash with ECC – 8KB RAM – 2 KB of data EEPROM with ECC – 20-byte backup register
标签: stm32l053c8t6
上传时间: 2022-02-06
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这是一篇哈尔滨工业大学2012年 物理电子学工学博士的毕业论文。相干多普勒激光雷达是测量遥感风场和运动目标速度的有力工具。相干多普勒激光雷达的发射源普遍使用单纵模激光器,而锁模激光所具有的宽频谱、窄脉宽、高峰值功率等特性使其在作为相干激光雷达发射源方面具有潜在的应用价值。本文从理论上和实验上对基于锁模激光的相干多普勒激光雷达进行了研究。 理论上,在单频外差探测原理的基础上,考虑了具有 m+1 个模式、纵模间隔为 ω 的本振光,与发生了 Δω 频移的信号光相干拍频后的理论模型,证明了相位差恒定的锁模激光可以实现相干混频,并可以通过低通滤波或 FFT 频谱分析的方式检测出差频信号。利用这一理论模型进行了数值模拟计算,分析了信号光在不同的频移值时的拍频波形,讨论了实现相干探测本振光与信号光应满足的条件。 基于相干多普勒激光雷达系统对发射光源的要求,进行了锁模激光器的实验研究。通过使用不同的锁模器件得到锁模激光输出,其中主动锁模和调 Q 主动锁模都获得了单脉冲宽度在百皮秒量级、锁模深度 100%、锁模几率 95%以上的稳定的锁模脉冲序列输出。对被动锁模、主动锁模、调 Q 主动锁模的激光输出特性进行了对比研究,主动锁模脉冲序列包络时间较长但峰值功率较低,而调 Q 主动锁模峰值功率高但包络时间较短,不同类型的激光输出为后续的相干测速实验提供了多种选择。 利用声光移频器模拟外差探测中信号光发生的多普勒频移,进行了锁模激光拍频实验研究,并与单纵模激光拍频实验结果进行了比较。使用锁模激光在频移为 30 ~ 80 MHZ 的范围内进行了拍频实验研究,拍频波形及信号处理的结果均与理论分析相符, 测量结果的相对误差在 0.5%以下。 分别使用脉宽为 10 ns和 16 ns 的调 Q 单纵模脉冲进行拍频,在信号光频移为 150 MHZ 时测量结果的相对误差分别为 3.7%和 1.6%。对比实验结果发现,调 Q 单纵模脉冲由于有限的脉宽限制了拍频后包络的数量,导致误差相对较大,而锁模脉冲序列由于具有较长包络时间,在测量较低频移值时仍具有较高的精度,即测量低速目标时更具有优势。在具有较长包络时间的同时,锁模激光还具有高峰值功率和窄脉宽的特点。使用光纤耦合的方式进行了相干拍频实验,得到了稳定的相干拍频波形,FFT 频谱分析的结果与设定值和理论分析相符。
标签: 激光雷达
上传时间: 2022-02-12
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高通蓝牙芯片QCC5144 详细规格手册datasheet (共99页)含各个接口说明,应用原理图等信息。 QualcommTrueWireless™ stereo earbuds (无线双耳) Features(特点) ■ Qualifiedto Bluetooth v5.2 specification (蓝牙协议标准5.2) ■ 120 MHZ Qualcomm ® Kalimba ™ audio DSP (120MHZ 的音频DSP处理器) ■ 32 MHZ/80MHZ Developer Processor for applications ■ Firmware Processor for system ■ Flexible QSPI flash programmable platform (可编程的QSPI外挂存储器) ■ High-performance 24‑bit audio interface (高性能的24位音频接口) ■ Digital and analog microphone interfaces (含 数字 及模拟 MIC接口) ■ Flexible PIO controller and LED pins with PWM support ■ Serial interfaces: UART, Bit Serializer (I²C/SPI), USB 2.0 (支持串口,I2C, SPI,USB 接口) ■ Advanced audio algorithms (高级的音频算法) ■ ActiveNoise Cancellation: (支持ANC 主动降噪功能) Hybrid, Feedforward, and Feedback modes, using Digital or Analog Mics, enabled using license keys available from Qualcomm® ■ Qualcomm ® aptX ™ and aptX HD Audio (支持独特的aptx 功能)
上传时间: 2022-04-07
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高通蓝牙芯片QCC3040 详细规格手册datasheet (共96页)QualcommTrueWireless™ stereo earbuds (无线双耳)Features(特点)■ Qualifiedto Bluetooth v5.2 specification (蓝牙协议标准5.2)■ 120 MHZ Qualcomm ® Kalimba ™ audio DSP (120MHZ 的音频DSP处理器)■ 32 MHZ Developer Processor for applications (32MH的 应用处理器)■ Firmware Processor for system■ Flexible QSPI flash programmable platform (可编程的QSPI外挂存储器)■ High-performance 24‑bit audio interface (高性能的24位音频接口)■ Digital and analog microphone interfaces (含 数字 及模拟 MIC接口)■ Flexible PIO controller and LED pins with PWM support■ Serial interfaces: UART, Bit Serializer (I²C/SPI), USB 2.0 (支持串口,I2C, SPI,USB 接口)■ Advanced audio algorithms (高级的音频算法)■ ActiveNoise Cancellation: (支持ANC 主动降噪功能)Hybrid, Feedforward, and Feedback modes, using Digitalor Analog Mics, enabled using license keys available from Qualcomm®■ Qualcomm ® aptX ™ and aptX HD Audio (支持独特的aptx 功能)
上传时间: 2022-04-09
上传用户:slq1234567890
AD5791是一款单通道、20位、无缓冲电压输出DAC,采用最高33V的双极性电源供电。正基准电压输入范围为4V至VDD–2.5V,负基准电压输入范围为VSS + 2.5 V至0V。相对精度最大值为±1 LSB,保证工作单调性,微分非线性(DNL)最大值为±1 LSB。特性分辨率:1ppm积分非线性(INL):1ppm噪声谱密度:7.5nV/√Hz长期线性稳定性:0.19 LSB温度漂移:<0.05 ppm/°C建立时间:1μs毛刺脉冲:1 nV-s工作温度范围:-40°C至125°C20引脚TSSOP封装宽电源电压范围:最高达±16.5V35 MHZ施密特触发数字接口1.8 V兼容数字接口
上传时间: 2022-04-28
上传用户:XuVshu