تطبيقات جديدة للإخراج الخطي تتطلب مستشعرات تأثير القاعة ، مثل الإزاحة والموضع الزاوي ، دقة أعلى وأحجام عبوات أصغر. تم تصميم الدوائر المتكاملة لمستشعر تأثير القاعة الخطي Allegro A1388 و A1389 لتلبية هذه المتطلبات. تحتوي كل من حزم المكونات الإضافية المثبتة على السطح ومن خلال الفتحة على هذه الأجهزة المستقرة حراريا.
The accuracy of each device can be improved through end-of-line optimization. Each device comes with non-volatile memory to optimize the device sensitivity and quiescent voltage output (QVO: output without a magnetic field) for a given application or circuit. The A1388 and A1389 also achieve optimal performance over the entire operating temperature range by programming the temperature coefficient in Allegro end-of-line tests for high sensitivity and QVO.
These proportional Hall-effect sensor ICs provide a voltage output proportional to the applied magnetic field. The quiescent voltage output can be adjusted to approximately 50% of the supply voltage.
With their features, these linear devices are ideal for automotive and industrial applications that require high accuracy and operate over a temperature range of –40°C to 150°C.
Each BiCMOS monolithic circuit incorporates Hall element temperature compensation circuitry that reduces the inherent sensitivity drift of the Hall element, a small-signal high-gain amplifier, a clamped low-impedance output stage, and a proprietary dynamic offset cancellation technique.
The A1388 and A1389 sensor ICs are available in two packages. LH is a SOT-23W miniature low profile package for surface mount. UA is a three-pin ultra-small single in-line package (SIP) for through-hole insertion. Both packages are lead (Pb) free and feature 100% matte tin leadframe plating.
- 5.0 V power supply
- Allegro's programmed QVO temperature coefficient ™ helps improve accuracy
- Small package options
- High bandwidth, low noise analog output
- The high-speed chopper design minimizes QVO drift over the operating temperature range
- Temperature stable quiescent voltage output and sensitivity
- Precise recoverability after periodic temperature changes
- The output voltage clamp has a short-circuit diagnostic function
- Undervoltage lockout (UVLO)
- Wide ambient temperature range: –40°C to 150°C
- Resistant to mechanical stress
- Higher EMC performance for stringent automotive applications