Programmable Linear Hall-Effect Sensor
Programmable on-chip digital signal processing (DSP) allows sensors to be individually adjusted to different requirements and applications, and enables automatic electronic in-line adjustments in the customer's manufacturing line.
The programmability of the sensors allows customers to save costs on logistics, qualification and production. The ability to individually program HAL805 sensors among several sensors running in parallel to the same supply voltage makes it easy to program redundant systems where multiple sensors are integrated in order to guarantee high security.
Micronas has developed the HAL80x family of CMOS sensors as a contactless alternative to existing potentiometers in order to avoid problems with dirt and wear. This is especially important for automotive applications with high vibrations, high temperatures, changing supply voltages and electromagnetic
interference. The family concept allows the creation of a broad variety of sensors derived from one basic design, allowing Micronas to meet the customers' various requirements.
The new sensor features diagnostic functions for open circuit detection and parallel programming for building up redundant systems. It is the sensor of choice for security relevant applications such as throttle position sensors and electronic pedal sensors.
The HAL805 is manufactured in a 0.8µm CMOS process that results in a very small die size and allows the integration of logic circuitry, DSP and nonvolatile memory. It is optimized for automotive applications with the chopper offset compensation technique and DSP, allowing it to operate accurately over a wide temperature range from –40° C to +150° C. Integrated compensation and protection circuitry allows the device to operate with noisy supply voltages without being distorted by high frequency electromagnetic radiation.
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