Publication date: 14 May 2008
The A1361/2/3 are ratiometric Hall-effect sensors, which provide a voltage output that is proportional to the applied magnetic field.
Each BiCMOS monolithic circuit integrates a Hall-effect sensor element, temperature-compensating circuitry to reduce the intrinsic 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.
These new devices feature noise levels as low as 8 mV peak-to-peak and bandwidth adjustable between 100 Hz and 50 kHz.
They are also the first products to use Allegro's new 1 mm thin, 4-lead, single-inline package,which allows for extremely small gaps in the concentrators (C-core style) to improve the signal/noise ratio and sensitivity.
The sensors are extremely stable over temperature variation, with quiescent voltage output and sensitivity maintained to within ±0.025%/degC. They also exhibit precise recoverability after temperature cycling. The accuracy of these devices is enhanced through the programmability on the output pin of the device.
A capacitor to ground on the filter pin of the A136x can be used to tune the device bandwidth over the full range from 50kHz to less than 100 Hz. The quiescent output voltage is user adjustable to 50% (bidirectional) or 10% (unidirectional) of the supply voltage, while output voltage clamps provide short circuit diagnostic capabilities.
Each device has a guaranteed, programmable sensitivity range: 0.7 to 1.4mV/G (A1360), 1.5 to 4.5 mV/G (A1361) and 4.5 to 16 mV/G (A1362). Device specifications are guaranteed over the extended temperature range of -40°Cto +150°C.
A data sheet of this product can be viewed and downloaded from: http://www.allegromicro.com/en/Products/Part_Numbers/1360/1360.pdf
Allegro MicroSystems, Inc. is a leader in developing, manufacturing and marketing high-performance power integrated circuits and integrated Hall-effect magnetic sensors. Allegro's innovative solutions serve high-growth applications within the automotive, communications,computer/office automation, consumer and industrial markets.
Allegro is headquartered in Worcester, Massachusetts (USA) with design and applications centres located in North and South America, Asia, and Europe.
Further information about Allegro can be found at http://www.allegromicro.com
Allegro MicroSystems Europe, headquartered in Chertsey, United Kingdom, is the European sales and marketing operation, and operates a network of representatives and distributors throughout Europe. Allegro also has an engineering design centre in Edinburgh in Scotland and an application and marketing centre in Annecy in France.
