2018-08-09T11:14:48+00:00

型号:开奖大厅 功能:全极 工作电压: 1.8-6V 输出电流: 唤醒状态:2mA; 睡眠状态: 1.9μA 工作点 (Bop): -3.5mT 释放点 (Brp): +/-2.6mT 睡眠时间: 140ms 唤醒时间: 100us 工作温度: -40~ 85℃ 封装外型: SOT23 概述: 产品型号:开奖大厅 工作温度: -40~85℃, 封装: T-SOT23-3,  包装: 3000只/盘 开奖大厅 是一款基于混合信号CMOS 技术的无极性霍尔开关,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。在电路设计上,OH4913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,芯片被周期性的“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“操作点”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,这种设计对于延长工作寿命提供了最好支持。开奖大厅的输出晶体管在面向封装标示一面存在一定强南极或北极磁场时被锁定在开状态,而在无磁场时锁定在关状态。 产品特点: 2.4V — 6V 电池应用 磁开关点的高灵敏度高稳定性 抗机械应力强 数字输出信号 全极性的开关 典型应用领域: 移动电话 笔记本电脑 便携电子设备 其他开关应用 极限参数: 项目 符号 值 单位 工作电压 VS -0.3—6.0 V 工作电流 IS -1—4.5 mA 输出电压 VQ -0.3—6.0 V 输出电流 IQ -1—2 mA 贮存温度 Tstg -45—150 ℃ 结点温度 — -150 ℃ ESD参数 — 4000 V 电参数:    Vcc =3V, TA=25°C 参  数 符 号 测试条件 量值 单位 最小 典型 最大 电源电压 VCC 2.4 - 6 V 电源电流 IAW 唤醒状态 0.5 2 4.5 mA ISL 睡眠状态 1 1.9 8 μA IAVG 平均供电电流 1 3 10 μA 输出漏电流 ILEAK - 0.01 1.0 μA 输出低电平电压 VSAT IOUT =1.0mA - 0.13 0.4 V 工作时间(唤醒时间) tAW 工作状态 25 100 160 μs 非工作(睡眠)时间 tSL 工作状态 60 140 240 ms 占空比 Top/Tstb 0.071 % 芯片启动时间 Tstu 12 20 us 输出上升沿时间 tr RL=2.7KΩ, CL=10pF - 0.5 1 μS 输出下降沿时间 tf RL=2.7KΩ, CL=10pF - 0.1 1 μS   磁参数  Vcc =3V, TA=25°C, (1mT = 10 Gauss) 参  数 符 号 测试条件 量值 单位 最小 典型 最大 工作点 BOPS S极对着印章面B>BOPS,VOUT=low(output on) 20 35 50 GS BOPN N极对着印章面B>BOPN,VOUT=low(output on) -50 -35 -20 GS 释放点 BRPS S极对着印章面B<BRPS,VOUT=high(output off) 12 27 42 GS BRPN N极对着印章面B<BRPN,VOUT=high(output off) -42 -26 -12 GS 回差 BH ︱BOPX - BRPX︱ 2 8 16 GS 开奖大厅 高灵敏度全极霍尔开关电路

2018-07-13T11:42:48+00:00

Operating voltage: 1.8-6V Output Current: Awake: 2mA; Sleep: 1.9μA Operating Point (Bop): -3.5mT Release Point(Brp): +/-2.6mT Sleep time: 140ms Awake time: 100us Operating Temp: -40~ 85℃ Package: TO-92S OH4913 is an integrated Hall-effect sensor designed specifically to meet the requirements of low-power devices, such as an On/Off switch in Cellular Flip-Phones, with battery operating voltages of 2.4V-5.5V. Precise magnetic switching points and high-temperature stability are achieved through the unique design of the internal circuit. An onboard clock scheme is used to reduce the average operating current of the IC. During the operating phase the IC compares the actual magnetic field detected with the internally compensated switching points. The output Q is switched at the end of each operating phase. During the Stand-by phase, the output stage is latched and the current consumption of the device reduced to some μA. The IC switching behavior is Omnipolar, it can be switched on with either the North or South pole of a magnet. Features Micropower design High sensitivity and high stability of the magnetic switching points High resistance to mechanical stress Switching for both poles of a magnet (omnipolar) Applications Cover switch in clam-shell cellular phones Cover switch in Notebook PC/PDA Contact-less switch in consumer products Absolute Maximum Ratings (TA=25℃) Supply Voltage VCC ·············· 6V                  Supply Current (Fault) ICC ··············4.5mA Output Voltage VOUT ··············6V                 Output Current IOUT ··············2 mA Storage Temperature ·············-45 to 150 °C         ESD Protection ················ 4000V Magnetic Characteristics  Vcc =3V, TA=25°C, (1mT = 10 Gauss) Parameter symbol Conditions Value Unit Min Typ Max Operate Point BOPS South pole to branded side B>BOPS,VOUT=low(output on) 20 35 50 GS BOPN North pole to branded side B>BOPN,VOUT=low(output on) -50 -35 -20 GS Release Point BRPS South pole to branded side B<BRPS,VOUT=high(output off) [...]