Файл:AD22151.pdf

Материал из РадиоВики - энциклопедии радио и электроники
Перейти к: навигация, поиск
Ссылка на страницу индекса

a

Linear Output Magnetic Field Sensor AD22151 FUNCTIONAL BLOCK DIAGRAM

FEATURES Adjustable Offset to Unipolar or Bipolar Operation Low Offset Drift Over Temperature Range Gain Adjustable Over Wide Range Low Gain Drift Over Temperature Range Adjustable First Order Temperature Compensation Ratiometric to VCC

REF

VCC/2 TEMP REF

OUT AMP

AD22151

APPLICATIONS Automotive Throttle Position Sensing Pedal Position Sensing Suspension Position Sensing Valve Position Sensing Industrial Absolute Position Sensing Proximity Sensing

ISOURCE

SWITCHES

DEMOD

VCC

GENERAL DESCRIPTION

The AD22151 is a linear magnetic field transducer. The sensor output is a voltage proportional to a magnetic field applied perpendicularly to the package top surface.

NC R1

R2

The sensor combines integrated bulk Hall cell technology and instrumentation circuitry to minimize temperature related drifts associated with silicon Hall cell characteristics. The architecture maximizes the advantages of a monolithic implementation while allowing sufficient versatility to meet varied application requirements with a minimum number of components. Principle features include dynamic offset drift cancellation and a built-in temperature sensor. Designed for single +5 volt supply operation, the AD22151 achieves low drift offset and gain operation over –40°C to +150°C. Temperature compensation can accommodate a number of magnetic materials commonly utilized in economic position sensor assemblies.

0.1␮F R3

OUTPUT

NC = NO CONNECT

GND

AD22151

Figure 1. Typical Bipolar Configuration with Low (< –500 ppm) Compensation VCC

The transducer may be configured for specific signal gains dependent upon application requirements. Output voltage can be adjusted from fully bipolar (reversible) field operation to fully unipolar field sensing.

R1

R4 NC

The voltage output achieves near rail-to-rail dynamic range, capable of supplying 1 mA into large capacitive loads. The signal is ratiometric to the positive supply rail in all configurations.

R2 0.1␮F R3

OUTPUT

GND

NC = NO CONNECT

AD22151

Figure 2. Typical Unipolar Configuration with High (≈ –2000 ppm) Compensation

REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1997


1 2 3 4 5 6 7 8
Перейти на страницу


Исходный файл(2550 × 3300 пикселей, размер файла: 118 КБ, MIME-тип: application/pdf, 8 страниц)

Importing file

История файла

Нажмите на дату/время, чтобы просмотреть, как тогда выглядел файл.

Дата/времяМиниатюраРазмерыУчастникПримечание
текущий15:48, 19 мая 2014Миниатюра для версии от 15:48, 19 мая 20142550 × 3300, 8 страниц (118 КБ)Maintenance script (обсуждение)Importing file
  • Вы не можете перезаписать этот файл.

Нет страниц, ссылающихся на данный файл.

Метаданные