安全系统 - 应用笔记



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Maxim > 方案 > 安全系统

应用笔记

App Note 4421: Alternatives to the DS1991L MultiKey iButton®
App Note 4409: USB Carries 16-Bit Voltage Measurements
App Note 4392: How to Replace a DS1213 SmartSocket with an Equivalent-Density NV SRAM Module
应用笔记4380：3S3P汽车尾灯(RCL) LED驱动器参考设计
App Note 4377: Comparison of the DS18B20 and DS18S20 1-Wire® Digital Thermometers
应用笔记4298：为DS1845/DS1855数字电位器构建按键接口
App Note 4297: Battery Selection for Secure Supervisor Applications
App Note 4292: Where Is Ground?
App Note 4291: Stack References for Higher Adjustable Voltages from a Digital Pot
App Note 4290: Ratiometric Design Overcomes the 25% Tolerance of a Digital Potentiometer
App Note 4289: Low-Temperature Data Retention in Nonvolatile SRAM
App Note 4287: Reconstructing Analog Video with the Maxim Video Filter Family
应用笔记4282：HFRD-33.0 HDMI和DVI、4 x 4交叉点开关
应用笔记4277：采用MAXQ2000 USB “拇指”评估套件进行设计
应用笔记4255：为1-Wire®器件的扩展功能供电
应用笔记4253：MAX6964 LED驱动器的PWM亮度控制
应用笔记4244：安全监控电路提供全方位监测，确保系统的安全性
应用笔记4242：在音频衰减器电路中使用MAXQ3210
App Note 4240: Active High-Voltage Transient Protectors Trump Conventional Approaches in Automotive Electronics
应用笔记4232：HFRD-34.0 4 x 4 DVI KVM开关
应用笔记4229：内部与外部看门狗定时器的比较
应用笔记4206：为嵌入式应用选择合适的1-Wire®主机
应用笔记4199：从高速微控制器系列向超高速闪存微控制器的升级
应用笔记4192：为DS2784独立式电量计添加热保护功能
应用笔记4186：视频滤波器的热管理设计
应用笔记4184：用于MAX7456随屏显示器SPI接口的C程序
应用笔记4167：摄像系统的模拟视频滤波技术
应用笔记4133：使用MAX7461同步丢失报警功能实现简单快速的标清视频检测
应用笔记4126：iButton数据记录器和iButton套的IP (进入防护)等级
应用笔记4120：DS8007在智能卡交易中的应用
应用笔记4117：使用MAX7456存储器和评估板文件生成定制字符和图形
应用笔记4104：DS2480B 1-Wire时序的理解及配置
应用笔记4081：过压保护的备用电路: 技巧和窍门
应用笔记4075：如何将DS1864的电流DAC转换成电压DAC
应用笔记4051：使用模拟电压控制数字电位器
应用笔记4036：利用DS8007评估套件进行设计
应用笔记4029：DS8007和智能卡接口基础
应用笔记4028：直流耦合视频放大器/滤波器的视频信号电平转换
应用笔记4024：可控制多外设的SPI/I²C总线
应用笔记4021：MAX6956编程指南
App Note 4006: NVSRAM Device Programmers
应用笔记4002：理解倒装芯片和晶片级封装技术及其应用
应用笔记3989：通过单个触点增加控制、存储器、安全和混合信号功能
应用笔记3980：下一代汽车照明电源
应用笔记3976：嵌入式安全系统的发展趋势
App Note 3974: Using a DS32x35 with an 8051-Type Microcontroller
应用笔记3967：选择串行总线
应用笔记3965：用MAXQ3212微控制设计数字温度监控器
App Note 3954: Characteristics of Manganese Lithium (ML) Batteries
App Note 3953: Side-by-Side Comparison of Fiber-Monitoring and Control ICs
应用笔记3950：确定RF抗干扰能力的测量技术
应用笔记3939：平均电流模式DC-DC控制器在信息娱乐终端的应用
App Note 3930: Package Thermal Resistance Values (Theta JA, Theta JC) for Dallas Semiconductor Temperature Sensors
App Note 3928: Automotive Linear Regulators Minimize Quiescent Current
应用笔记3925：1-Wire®扩展网络标准
App Note 3921: Using a DS1307 with a PIC Microcontroller
应用笔记3911：提高MAX1464 ADC性能
应用笔记3892：iButton传感器和温度/湿度数据记录器综述
App Note 3874: Simple Characterization Circuit for Rechargeable AA Cells
App Note 3869: Variations Among Current-Sink/Source Circuits with a Single Op Amp
应用笔记3855：精密监视负电源电流的电路
应用笔记3852：MAX1464数字传感器信号调理器常见问题解答
App Note 3846: Analysis of a Digitally Controlled Wien-Bridge Oscillator
应用笔记3829：确定多从机1-Wire网络的恢复时间
App Note 3816: Selecting a Backup Source for Real-Time Clocks
应用笔记3815：UHF ISM波段发射器的辐射功率和场强测试
应用笔记3814：端口扩展器降低折叠手机的成本及尺寸
应用笔记3809：将DS192x的记录数据从OneWireViewer中导入到Excel
应用笔记3808：什么是iButton?
App Note 3779: Calculating ML Cell Life for an RTC Backup Operation
App Note 3778: Problems and Solutions for Adjusting to Changes in Daylight Saving Time
应用笔记3769：用MAXQ3210构建1-Wire温度记录仪
应用笔记3761：DS1922/DS1923电池电量计
App Note 3759: Timing Considerations When Using NVSRAM
App Note 3757: Bias Supply Powers Low-Power Geiger-Mueller Tube
App Note 3754: Single-Wire Serial Bus Carries Isolated Power and Data
App Note 3745: Low-Cost Quad Op Amp Drives RF Modulator
应用笔记3728：单SCART视频驱动器
应用笔记3721：DS1318与8051微控制器的接口
应用笔记3693：Maxim为什么选择设计单片NV SRAM模块
应用笔记3680：音/视频应用中利用负压电荷泵和模拟开关构建DirectDrive视频滤波放大器
应用笔记3676：SHA-1安全系统中的DS2460
应用笔记3675：保护您的研发成果—双向认证及软件功能保护
App Note 3671: Data Slicing Techniques for UHF ASK Receivers
App Note 3658: Serializing an HD44780 LCD Display
应用笔记3650：MAX1464的片上温度传感器
App Note 3649: MAX1464 Signal-Conditioner, Sensor Compensation Algorithm
App Note 3643: How to Use the DS1678 Real-Time Event Recorder
App Note 3623: Battery-Charger PWM Input Has Watchdog Protection
应用笔记3611：集成直流对数放大器
应用笔记3589：高效率﹑低成本ISM频段发送器中的功放
应用笔记3587：FCC和ETSI对ASK调制、短距离UHF发送器的要求
应用笔记3572：有关内置晶体封装的常见问题
App Note 3553: CAN-to-Ethernet Using the DS80C400
应用笔记3550：用IAR编译器开发DS80C400
App Note 3530: Circuit Converts PWM Fan Drive to Linear and Reduces Acoustic Noise
应用笔记3522：白皮书9：SHA-1器件的安全性是否依然足够安全？
应用笔记3520：低成本、30MHz、三通道HDTV重建滤波器
应用笔记3510：DS1305 RTC与8051微控制器的接口
App Note 3502: Effect of PC Board Trace Width on Remote-Diode Temperature-Sensor Accuracy
应用笔记3489：DS91230 USB适配器在Windows® 98系统中的安装
App Note 3481: Using the DS1859 with External EEPROM
应用笔记3466：利用GPIO扩展器构建电荷泵，驱动蓝光LED
App Note 3452: Instant Performance Enhancement with Flash Microcontrollers
应用笔记3447：用MAX2742构建GPS接收机
应用笔记3438：串行数字网络
App Note 3435: Manchester Data Encoding for Radio Communications
App Note 3421: Interfacing 8051-based Microcontrollers to an SCI Port
应用笔记3401：Maxim 300MHz至450MHz发送器到小环形天线的匹配网络
应用笔记3395：遥控门禁(RKE)系统的设计要求
应用笔记3377：Maxim晶片级封装安装指南
App Note 3364: Creating a Ratiometric Current Excitation in Sensors Using the MAX1464 Signal Conditioner
应用笔记3358：OneWireViewer用户指南
App Note 3317: Adding Windows NT/2000/XP Support to the AN3315 Parallel-Port 2-Wire Software
App Note 3315: Writing Parallel-Port 2-Wire Software in C
应用笔记3313：DS1390/DS1391 RTC与Motorola SPI接口DSP的连接
应用笔记3305：MAX4090与重建滤波器的配合使用
应用笔记3303：掌握视频信号的箝位、偏置和交流耦合
应用笔记3300：I²C串行实时时钟与微控制器的接口
应用笔记3294：使用DS5250作为安全协处理器提高系统安全
App Note 3291: Using DS4510/DS4520/DS4550 to Select Backup Flash Memory
应用笔记3289：具有风扇失效指示的监控IC
App Note 3287: White-LED Driver Provides 64-Step Logarithmic Dimming
App Note 3283: One Button Turns Microprocessor On and Off
应用笔记3262：基于8051的微控制器在系统编程
应用笔记3242：GPS和DGPS概述和完整的RF前端设计
应用笔记3241：通过USB为电池充电
应用笔记3230：如何使用PC并口与2线设备通信
应用笔记3227：上电复位与相关监控功能
应用笔记3191：电池与PWM充电电源短路保护
应用笔记3175：基站RF功率放大器的偏置
应用笔记3173：风扇自动控制：高速芯片冷却技术的趋势
应用笔记3170：中庸之道：高速8位微控制器的用武之地
应用笔记3081：怎样将数字电位器的带宽从10倍提高到100倍
App Note 2965: 1-Wire® Master Device Configuration
应用笔记2853：多电压系统监控器
应用笔记2852：用PC机测试MAX7300/MAX7301的端口扩展功能
App Note 2833: Interfacing an SPI RTC with a Motorola DSP
应用笔记2815：计算ASK接收机的灵敏度
App Note 2765: Flexible Fault Protection
应用笔记2740：如何访问DS1318的时钟寄存器
应用笔记2420：与Microchip PICmicro微控制器之间的1-Wire通信
App Note 2400: A Compact 36-72V DC Input, 3.3V/10A Output Power Supply
App Note 2383: Active HDTV Reconstruction Filter Lowers Cost and Improves Performance
应用笔记2378：灵活的系统故障保护电路设计
App Note 2361: Interfacing an SPI-Interface RTC with a PIC Microcontroller
App Note 2237: Simple Circuit Disconnects Load from Low-Voltage Supply
App Note 2199: Driving LEDs with Push-Pull Port Expander Outputs
App Note 2198: Driving LEDs with Open Drain Port Expander Outputs
应用笔记2143：用DS1340-33替代ST M41T00
应用笔记2142：利用DS1340的校准功能
App Note 2099: DS1847/DS1848 Online Interactive Temperature Calculator
应用笔记244：性能优异的1-Wire网络驱动器
App Note 2077: Using Dallas Semiconductor NV SRAMs in RAID Applications
App Note 2047: Step-Up/Step-Down Converter Features Ultra-Low Quiescent Current
应用笔记2035：高速8051微控制器：引领成长与创新之路
应用笔记2033：基于SRAM的微控制器提供更优的安全性
应用笔记710：利用DS80C400微控制器构建拨号网络
App Note 2004: Calibrating the DS1340 Real-Time Clock
App Note 1988: Circuit Enables PC-Based Voltage Measurements
应用笔记1974：利用看门狗改善系统可靠性―如何正确选择器件
App Note 1960: Simple Pulse Generator Has Low Parts Count
应用笔记1955：快启动振荡器(FOX)提升了超外差性能
App Note 1954: Designing Output-Matching Networks for the MAX1472 ASK Transmitter
App Note 1953: 8:1 Mux-Amps Form Large Multiplane Mux Structures
App Note 1952: 48x16 Video-Crosspoint IC Eliminates External Mux-Amps
App Note 1943: Improving the Performance of the MAX4455 by Reducing On-Screen Display Artifacts
App Note 517: DS1371/DS1372/DS1374 32-Bit Binary Counter Time Conversion
App Note 1926: Watchdogs Improve System Reliability—How to Choose the Right Part
App Note 233: Regenerating the DS1847/DS1848 Resistor Calibration Constants
App Note 237: Introduction of the DS1847 for Industrial Controls
App Note 516: Using Multiplexed Bus Clocks with a Microcontroller
App Note 235: Using Spare NV Digital Pots as NV Digital Configuration Bits
App Note 234: Calculate Ratiometric Outputs of the Log Pot DS1802
App Note 610: Replacing an Atmel TS80C51U2 with a DS80C320/323 Microcontroller
App Note 1879: Using Maxim SPI-compatible Display Drivers with other SPI Peripherals
App Note 1873: 4mA–20mA Loop Powered Temperature Sensor
App Note 1868: Negative Resistor Cancels Op Amp Load
App Note 1867: Optocoupler Extends High-Side Current Sensor to 1kV
App Note 1865: Different Ways to Use a MAX6369 Series Watchdog Timer
App Note 1845: Choosing the Right DC-DC Converter for Automotive Applications
App Note 1837: One-Shot Timing Improves Microprocessor Reset Circuit
App Note 1836: Improving Receiver Sensitivity with External LNA
App Note 1830: How to Tune and Antenna Match the MAX1470 Circuit
App Note 1828: Audio Gain Control Using Digital Potentiometers
App Note 1826: Satellite Radio Receiver 1st Mixer: MAX2682 Tuned for 2642.5MHz
App Note 1820: White Paper 1: SHA Devices Used in Small Cash Systems
App Note 226: Step-Up DC-DC Converter Calibration and Adjustment Using a Digital Potentiometer
App Note 1802: ESD-Protected EPOT System has Pushbutton Interface
App Note 1800: Smart IC Maintains Uniform Bias Current For GaAs MESFETs
App Note 1794: Interfacing Digitally Controlled Pots and Resistors to Laser Drivers
App Note 512: Using the Watchdog/Alarm Counter in the DS1371 and DS1374 Real-Time Clocks
应用笔记1776：MAX1470超外差接收机常见问题(FAQ)
应用笔记1774：遥控车门开关系统综述
应用笔记1773：设计遥控车门开关(RKE)系统
App Note 1771: Microcontrollers Improve Power Efficiency of 8051-Based Designs
App Note 1770: Securing Electronic Transactions Using SHA-1 Secure Hash Algorithm
App Note 1769: Behind the Light Show in Optical Transceivers
App Note 1757: HFAN-08.2.1: PWM Temperature Controller for Thermoelectric Modules Keeps Components within 0.1°C
应用笔记1201：白皮书8: 1-Wire® SHA-1概述
App Note 1195: Maximize Battery Life and Minimize Replacements
App Note 216: How to Interpret DS1847/DS1848 Temperature Readings
App Note 215: 2-Wire Communication Using LabVIEW
App Note 214: Using a UART to Implement a 1-Wire Bus Master
App Note 511: Using the DS1672 Low-Voltage Serial Timekeeping IC
App Note 213: Using a PC with a DS3900 to Communicate with DS1267s, DS1867s, and DS1868s
App Note 1156: Low-Cost AC Supply
App Note 1151: HFRD-02.0: 2.5Gbps Small Form Factor (SFF) Transmitter
App Note 1145: Interface a Multiplexed-Bus Real-Time Clock to a µP With Separate Address and Data Buses
App Note 1136: Switching Between Battery and External Power Sources
App Note 1127: Amplifier Provides Signal Conditioning for Piezofilm Sensor
App Note 1126: Simple Circuit Protects Systems from Overheating
App Note 1125: Circuit Generates Analog Fan-Speed Control
App Note 208: Curve Fitting the Error of a Bandgap-Based Digital Temperature Sensor
App Note 207: DS1845/DS1855 Temperature Coefficient Analysis
App Note 1100: White Paper 5: Using 1-Wire APIs for Data Sheet Commands
App Note 1099: White Paper 4: Glossary of 1-Wire SHA-1 Terms
应用笔记1098：白皮书3：为什么1-Wire SHA-1器件是安全的？
App Note 1097: White Paper 2: Using the 1-Wire® Public Domain Kit
App Note 206: Using a PC's RS-232 Serial Port To Communicate with 2-Wire Devices
App Note 1093: HFAN-02.3.2: Maintaining Average Power and Extinction Ratio, Part 2, MAX3863 Laser Driver and DS1847 Digital Resistor
App Note 1087: Micro Tutorial 1: Understanding DC Electrical Characteristics of Microcontrollers
App Note 1075: Simplify Isolated Temperature Sensing With Single Wire Sensors
App Note 1074: DAC and Op Amp Generate Variable Negative Control Voltage
App Note 204: iButton ID Badge Mounting Options
App Note 1070: Windowed Watchdog Enhances µP Supervisors
App Note 202: NV SRAM Frequently Asked Questions
App Note 1066: Tech. Brief 39: NV SRAM Cross Reference Table
App Note 166: Interfacing Digitally Controlled Potentiometers and Resistors to Laser Drivers
App Note 161: Using a DS1802 Push-Button Digital Potentiometer to Create an Audio Preamp with Attenuator
应用笔记890：用于GPS接收机的硅锗(SiGe)下变频器
应用笔记957：调谐于GPS前端的MAX2681 SiGe下变频混频器
App Note 506: Recording Total On-Time and Power Cycling Information Using the DS1682
App Note 939: Choosing Supervisor Outputs
App Note 1057: Compensating for Ideality Factor and Series Resistance Differences between Thermal Sense Diodes
App Note 893: Switch-Debouncer IC Creates A Long-Period Timer
App Note 1050: Reset Circuit Ensures Valid Supply Voltage
应用笔记1024：用于视频系统的单SCART接口
App Note 193: Extending 1-Wire Range with Network Proxies
应用笔记187：1-Wire搜索算法
App Note 505: Lithium Coin-Cell Batteries: Predicting an Application Lifetime
应用笔记1018：如何将现有的TDA5200或者TDA5201设计修改为MAX1470超外差接收机
应用笔记157：SHA iButton API概述
应用笔记1017：如何为MAX1470超外差接收机选择石英晶体振荡器
App Note 1010: Methods of Controlling Laser Drivers: POTs and DACs
App Note 603: Implementing a Serial Port FIFO Using Dual Data Pointers
App Note 190: Challenge and Response with 1-Wire® SHA Devices
应用笔记192：DS2480B串行接口1-Wire线驱动器的使用
应用笔记155：1-Wire®软件资源指南和器件说明
App Note 152: SHA iButton Secrets and Challenges
App Note 151: Maxim Digital Monetary Certificates
App Note 162: Interfacing the DS18X20/DS1822 1-Wire Temperature Sensor in a Microcontroller Environment
App Note 994: Reference Voltage for Multiple ADCs
App Note 181: DS1847/DS1848 Temperature Coefficient Supplement
App Note 154: Passwords in SHA Authentication
App Note 504: Design Considerations for Dallas Semiconductor Real-Time Clocks
App Note 701: Using the DS32kHz with Dallas Real-Time Clocks
App Note 961: Thermal Protection in Low-Cost Systems, Part 1
App Note 795: Designing Large Video-Crosspoint Systems Just Got Easier
应用笔记159：绝对可靠的1-Wire通信
App Note 150: Small Message Encryption using SHA Devices
App Note 170: Adding Nonvolatile SRAM into Embedded Systems
App Note 165: Interfacing the DS2760 1-Wire High-Precision Li-Ion Battery Monitor and Protection IC in a Microcontroller Environment
应用笔记156：DS1963S SHA 1-Wire API用户指南
App Note 167: Considerations for the DS1847/DS1848 Look-Up Tables
App Note 898: Selecting LDO Linear Regulators for Cellphone Designs
App Note 169: Interfacing a DS1868 3-Wire Device to a SPI Bus
App Note 823: Two ICs Convert 4-20mA Signal to 0-5V Output
应用笔记158：用XML实现1-Wire®标签
应用笔记148：1-Wire网络可靠设计指南
应用笔记806：3.5GHz无线本地环路收发信机射频芯片
App Note 843: Industrial 0V to +10V Digital Potentiometer
App Note 838: Creating Non-Linear Transfer Functions With Linear Potentiometer Circuits
App Note 825: Sawtooth Generator Exhibits ~1% Linearity And >80dB Dynamic Frequency Range
App Note 805: Low-Cost, 24V Industrial Controller Is ESD-Protected
App Note 595: 8051 Microcontrollers: Frequently Asked Questions
App Note 593: Dallas Semiconductor Digital Potentiometers: Frequently Asked Questions
App Note 56: The DS80C320 as a Drop-In Replacement for the 8051/8032 Microcontroller
App Note 101: Using the Secure Microcontroller Watchdog Timer
App Note 94: Using the Secure Microcontroller with EPROM/ROM
App Note 764: Interfacing Switches and Relays to the Real World in Real Time
App Note 114: 1-Wire File Structure
App Note 145: Interfacing the 1-Wire Master (DS1WM) to an ARM7 Processor
App Note 111: Dual, Voltage-Output DAC Consumes Miniscule Power
App Note 137: Using a EconOscillator™ to Clock an 8051 Microprocessor
App Note 608: Micropower Circuit Offers Automatic Shutdown and Low-Battery Lockout
应用笔记602：GPS接收机射频芯片
App Note 1858: Tiny IC Debounces Pushbutton Switch
App Note 1118: Manually Operated Digital Potentiometer Doesn't Need a Microprocessor
App Note 502: Interfacing SPI Real-Time Clocks (RTCs) with a Microcontroller
应用笔记749：利用选择性改善接收机的截止点
App Note 91: Microcontroller Design Guidelines for Reducing ALE Signal Noise
App Note 93: Design Guidelines for Microcontrollers Incorporating NV RAM
App Note 582: Watchdog Timer Assumes Varied Roles
App Note 87: DS1867 Power Supply Conditioning for EEPROM Wiper Storage
App Note 122: Using Dallas' 1-Wire ICs in 1-Cell Li-Ion Battery Packs With Low-Side N-Channel Safety FETs Master
App Note 102: Using the High-Speed Microcontroller as a Bootstrap Loader
App Note 571: Using Analog Temperature Sensors with ADCs
App Note 89: High-Speed Micro Memory Interface Timing
App Note 92: DS5002FP Memory Expansion Techniques
应用笔记27：理解和运用Maxim iButton产品中的循环冗余校验(CRC)
App Note 58: Crystal Considerations with Dallas Real-Time Clocks (RTCs)
App Note 57: DS80C320 Memory Interface Timing
App Note 66: Watchdog Timekeeper
App Note 74: Reading and Writing 1-Wire® Devices Through Serial Interfaces
App Note 548: Using the High-Speed Micro's Watchdog Timer
App Note 78: Using Power Management with High-Speed Microcontrollers
App Note 75: Using the High-Speed Micro's Serial Ports
App Note 408: Controlling a DS1803 Digital Potentiometer Using an 8051 Microprocessor to Generate 2-Wire Signals
App Note 95: Interfacing the DS1307 with an 8051-Compatible Microcontroller
App Note 2119: Audio Characterization Report for the DS1802 Dual Digital Audio Potentiometer
App Note 79: Using the DS87C530/DS5250 Real-Time Clock
App Note 81: Memory Expansion with the High-Speed Microcontroller Family
App Note 741: Rail-to-Rail Outputs and Beyond-the-Rails Inputs: The Inside Story on Micropower Op Amps
应用笔记120：利用API控制DS1WM 1-Wire®总线主机
App Note 694: Temperature Sensor ICs Simplify Designs
应用笔记119：嵌入1-Wire®主机
App Note 720: Microprocessor Supervisors Offer Big Insurance in Small Packages
App Note 481: Simple Circuit Activates Fan When Processor Heats Ups
App Note 34: Low-Power Op-Amp Reduces Cable Costs for pH Probe
应用笔记335：Maxim无线/射频功率放大器选择指南
App Note 287: Switch Bounce and Other Dirty Little Secrets
App Note 685: How to Simplify the Interface between Microcontroller and Temperature Sensor
应用笔记126：用软件实现1-Wire®通信
App Note 687: Distributed Temperature Sensing Improves Reliability
App Note 1094: Choosing The Optimum Buffer/ADC Combination For Your Application
应用笔记697：SiGe技术提高无线前端性能
App Note 655: Supervisor ICs Monitor Battery-Powered Equipment
App Note 50: Proximity Detector Features Ultrasonic Transducers
App Note 42: Large Capacitor Replaces Backup Battery
App Note 1031: Low-Power 3V ADC is 0.05% Linear
App Note 23: µP-Supervisor Chip Controls Programmable Filter
App Note 426: One-Hour Battery Charger Has Switch-Mode PWM Control
App Note 36: Op-Amp Inputs Provide Ultra Low-Leakage Clamps
App Note 1903: Dual Comparator Forms Temperature-Compensated Proximity Detector
应用笔记942：仅吸收6µA电流的负载开关
应用笔记2594：低功耗、3V工作电压、精度0.05%的A/D变换器