Analogue, Mixed Signal, LSI


Programmable Hall-effect switches for gear-tooth or proximity sensing

3 May 2006 Analogue, Mixed Signal, LSI

Allegro MicroSystems Europe's ATS635/636 series of programmable back-biased Hall-effect IC sensors are power-on state devices which use an optimised Hall-effect IC and magnet combination to switch in response to magnetic signals created by ferrous targets in automotive or industrial gear-tooth sensing and proximity applications.

These devices are externally programmable, with a wide range of programmability available on the magnetic operate point while the hysteresis remains fixed. This advanced feature allows for optimisation of the sensor switchpoint and can significantly reduce the effects of mechanical placement tolerances in production environments.

A proprietary dynamic offset cancellation technique with an internal high-frequency clock reduces the residual offset voltage, which is normally caused by device overmoulding, temperature dependencies, and thermal stress. Having the Hall element and amplifier in a single chip minimises many problems normally associated with low-level analog signals.

The ATS635LSE switches 'high' in the presence of a ferrous target or tooth and 'low' in the presence of a target valley, window, or when the ferrous target is removed. The ATS636LSE has the opposite polarity and switches 'low' in the presence of a ferrous target or tooth and 'high' in the presence of a target valley, window, or when the ferrous target is removed. These devices also incorporate robust EMC, ESD and reverse battery protection.

For more information contact Simon Churches, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected]



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Altron celebrates 60th birthday with a call to rebuild Johannesburg
Altron Arrow News
Altron is celebrating its 60th birthday by honouring Johannesburg’s heritage and encouraging business, government and civil society to come together and respond to our President’s call to rebuild Johannesburg.

Read more...
Reference board for cardio monitoring
Altron Arrow Telecoms, Datacoms, Wireless, IoT
The STDES-ESP01 reference board from STMicroelectronics demonstrates the capability of the ST1VAFE6AX and ST1VAFE3BX biosensors to detect ECG and SCG signals.

Read more...
ST MCUs extend ultra-low power innovation
Altron Arrow DSP, Micros & Memory
STMicroelectronics has introduced new STM32U3 microcontrollers with cutting-edge power-saving innovations that ease deployment of smart connected tech, especially in remote locations.

Read more...
Multicell battery monitoring
Altron Arrow Power Electronics / Power Management
The LTC6811 from Analog Devices is a multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1,2 mV.

Read more...
A new era in modular I/O solutions
Rugged Interconnect Technologies Analogue, Mixed Signal, LSI
Aerospace and defence system designers are demanding scalable and high-performance I/O solutions and while traditional mezzanine standards have proven reliable, they often fall short of meeting modern bandwidth, size, and flexibility requirements.

Read more...
High voltage instrument op-amp
iCorp Technologies Analogue, Mixed Signal, LSI
The SGM621B is a high accuracy, high voltage instrumentation amplifier, which is designed to set any gain from 1 to 10 000 with one external resistor.

Read more...
Innovative satellite navigation receiver
Altron Arrow Telecoms, Datacoms, Wireless, IoT
STMicroelectronics has released an innovative satellite navigation receiver to democratise precise positioning for automotive and industrial applications.

Read more...
LED driver for industrial power supply indication
Altron Arrow Editor's Choice Circuit & System Protection
A simple and small solution for driving an LED to provide visual feedback in the presence/absence of a system’s power using a chip not originally designed for this purpose.

Read more...
High-voltage step-down DC-DC converter
Altron Arrow Power Electronics / Power Management
The MAX17793 is a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operating over an input voltage range of 3 to 80 V.

Read more...
High-speed SAR ADC simplifies design
Altron Arrow Analogue, Mixed Signal, LSI
The ADI AD4080 simplifies data converter integration by integrating a low drift reference buffer, low dropout regulators and a 16K result data FIFO buffer.

Read more...