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Linear Hall sensor IC features 10bit digital output resolution

Austriamicrosystems has introduced the AS5510 linear Hall sensor IC, featuring a small size and 10bit digital output resolution. Housed in a 1.46x1.1mm chip scale package, the device includes an I²C two-wire serial interface for switching between four different sensitivity ranges and for simple transmission of data to a microcontroller. Designed for consumer applications, the AS5510 magnetic linear encoder offers the size, features and performance required for contact less linear position sensing in applications featuring closed-loop position control systems with space constraints such as zoom or auto focus camera systems. It can measure the absolute position of a simple two-pole magnet for a typical lateral stroke of 0.5 to 2mm with air gaps of 1.0mm. With strong magnets, it is claimed that even high lateral strokes and air gaps are possible. To minimise power consumption, the device can switch to a power-down mode with a current consumption of 25µA. The I²C interface enables connection to the microcontroller without requiring additional analogue to digital conversion. The combination of small system size, accurate and contactless sensing and low current consumption makes it suitable for mobile electronic solutions, states the company. With an on-chip ADC and an I²C interface, the device can communicate with the system microcontroller and also facilitates programming the sensor. The company claims that the device's integration level simplifies system design complexity and eliminates problems associated with noise, gain and reference voltages. The device is specified over the -30 to +85°C temperature range, comes in a 6pin WLCSP and operates from a 2.5 to 3.6V supply voltage.