The A1340 device is a high-precision, programmable Hall-effect linear sensor integrated circuit (IC) for automotive and non-automotive applications. The A1340's signal channels allow for flexibility through external programming, which ensures accurate and customized output voltages from the input magnetic signal. The A1340 offers 12-bit output resolution and supports bandwidths up to 3 kHz.
BiCMOS monolithic integrated circuits include Hall sensor components, high-precision temperature compensation circuitry to reduce the sensitivity and offset drift inherent in Hall components, small signal high-gain amplifiers, proprietary dynamic offset cancellation circuitry, and advanced output linearization circuitry.
With onboard EEPROM and advanced signal processing, the A1340 offers unmatched customer programmability options for gain and offset, bandwidth, and output clamping. Multiple input magnetic range and signal offset selections are factory preset. In addition, the device supports separate high and low temperature, first- and second-order temperature compensation.
A key feature of the A1340 is its ability to produce highly linear device outputs in a nonlinear input field. To achieve this, the device divides the output into 32 equal segments and applies a unique linearization factor to each segment. The linearization coefficients are stored in the lookup table of the EEPROM.
The A1340 sensor is available in a lead-free (Pb) 4-pin single-in-line package (KT suffix) with 100% matte tin plating on the pin frame.
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高级 32 段输出线性化功能即使在非线性输入磁场存在的情况下也能提供极高的输出精确度和线性度
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客户可调整灵敏度和偏移、带宽、输出钳位以及一阶和二阶温度补偿
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可同时对所有参数进行编程，实现准确和高效的系统优化
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磁性输入范围（粗略灵敏度）和信号偏移已经厂方调整
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灵敏度温度系数和磁性偏移漂移可在 Allegro 中预设，无需进行客户温度测试，即可获得最大器件精确度
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通过专有的四相斩波稳定技术和差分电路设计技术获得温度稳定、抗机械应力及噪音极低的器件输出
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提供开路和欠压诊断
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可在较宽的环境温度范围：–40°C 至 150°C
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下以 4.5 至 5.5 V 的电源电压