A1185

Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches

Description TheA1185andA1186areultrasensitive,two-wire,unipolarHalleffectswitches.Theoperatepoint,BOP,canbefieldprogrammed,afterfinalpackagingofthesensorandplacementintotheapplication.Thisadvancedfeatureallowstheoptimizationofthesensorswitchingperformance

A1185

Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches

FeaturesandBenefits ▪Chopperstabilization ▫Lowswitchpointdriftoveroperating temperaturerange ▫Lowsensitivitytostress ▪Fieldprogrammableforoptimizedswitchpoints ▪On-chipprotection ▫Supplytransientprotection ▫Reverse-batteryprotection ▫On-boardvoltageregulator

A1185

超灵敏双线式现场可编程稳定斩波单极霍尔效应开关; • 稳定斩波\r\n• 在工作温度范围以内低开关点漂移\r\n• 低应力灵敏度\r\n• 现场可编程以优化开关点\r\n• 芯片保护\r\n• 电源瞬态保护\r\n• 电池反接保护\r\n• 板上电压调节器\r\n• 3.5 - 24 V 工作电压;

这些器件不再生产。该器件不得用于新设计应用。不再提供样品。状态变更日期：2011 年 10 月 31 日。\r\n\r\n推荐的代替产品：对于现有的客户转换，以及新客户或新应用，请参考以下部件：\r\n\r\n对于 A1185EUA-T，使用 A1192LUA-T\r\n对于 A1185LUA-T 和 A1186LUA-T，使用 A1193LUA-T\r\n对于 A1185ELHLT-T，使用 A1192LLHLX-T\r\n对于 A1186ELHLT-T 和 A1186LLHLT-T，使用 A1193LLHLX-T\r\nA1185 和 A1186 器件属超灵敏双线式稳定斩波单极霍尔效应开关。操作点 (BOP) 在传感器最后封装并置于应用后，可进行现场编程。这种先进功能通过有效解决由器件和目标磁体安装公差引起的变化，实现传感器开关性能的优化。\r\n\r\n本系列器件采用 Allegro MicroSystems 先进的 BiCMOS 晶片制造工艺制成，应用了获专利的高频稳定斩波技术，实现磁稳定性，并消除暴露在恶劣应用环境中的单元件器件固有的偏移。通常在许多汽车应用中，A1185 和 A1186 器件用于感应座椅调节导轨位置、安全带搭扣存在、引擎盖 / 后备箱锁闭和换挡选择器的位置。\r\n\r\n与更传统的开路集电极开关相比，两线单极开关在工作时少用一根线，所以它们非常适合价格敏感型应用。而且，系统设计师始终可获得诊断信息，因为输出电流通常在两个狭窄范围内流动。已为（高）电流输出和（低）电流输出设定不同的电流范围。这两个范围以外的任何级别输出电流都表明出现故障。A1185 和 A1186 器件也具有电源线过电压状态下芯片瞬态保护及齐纳钳位功能。\r\n\r\nA1186 输出电流在存在足够强度的南极磁场时切换至“高”位，否则，切换至“低”位（包括无显著磁场存在的情况）。A1185 电流输出水平相反：存在足够强度的南极磁场时，电流切换至“低”位，否则切换至“高”位。\r\n\r\n所有器件产品均以两种封装类型提供。LH 是 SOT-23W 微型低厚度表面安装型封装。UA 是用于通孔安装的 3 引脚超微型单列直插式封装 (SIP)。各封装类型（后缀，-T）均是无铅版本，引脚框采用 100% 雾锡电镀。\r\n\r\n另请参阅：A1180、A1181、A1182、A1183 和 A1184。\r\n\r\n同时提供出厂编程版。参阅：A1145 和 A1146。

A1185

High Sensitivity Hall Effect Latch

A1185_06

Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches

FeaturesandBenefits ▪Chopperstabilization ▫Lowswitchpointdriftoveroperating temperaturerange ▫Lowsensitivitytostress ▪Fieldprogrammableforoptimizedswitchpoints ▪On-chipprotection ▫Supplytransientprotection ▫Reverse-batteryprotection ▫On-boardvoltageregulator

A1185ELHLT

Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches

Description TheA1185andA1186areultrasensitive,two-wire,unipolarHalleffectswitches.Theoperatepoint,BOP,canbefieldprogrammed,afterfinalpackagingofthesensorandplacementintotheapplication.Thisadvancedfeatureallowstheoptimizationofthesensorswitchingperformance

A1185ELHLT-T

Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches

Description TheA1185andA1186areultrasensitive,two-wire,unipolarHalleffectswitches.Theoperatepoint,BOP,canbefieldprogrammed,afterfinalpackagingofthesensorandplacementintotheapplication.Thisadvancedfeatureallowstheoptimizationofthesensorswitchingperformance

A1185ELHLT-T

Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches

FeaturesandBenefits ▪Chopperstabilization ▫Lowswitchpointdriftoveroperating temperaturerange ▫Lowsensitivitytostress ▪Fieldprogrammableforoptimizedswitchpoints ▪On-chipprotection ▫Supplytransientprotection ▫Reverse-batteryprotection ▫On-boardvoltageregulator

A1185EUA

Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches

Description TheA1185andA1186areultrasensitive,two-wire,unipolarHalleffectswitches.Theoperatepoint,BOP,canbefieldprogrammed,afterfinalpackagingofthesensorandplacementintotheapplication.Thisadvancedfeatureallowstheoptimizationofthesensorswitchingperformance

A1185EUA-T

Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches

Description TheA1185andA1186areultrasensitive,two-wire,unipolarHalleffectswitches.Theoperatepoint,BOP,canbefieldprogrammed,afterfinalpackagingofthesensorandplacementintotheapplication.Thisadvancedfeatureallowstheoptimizationofthesensorswitchingperformance