Honeywell’s VM Series Anisotropic Magnetoresistive (AMR) Integrated Circuit (IC) product line is designed to detect the speed and direction of a ring magnet encoder target using a unique (patent pending) bridge design and configuration. The three offerings include 2- and 4-pin AMR sensors to be used in speed, speed and position sensing in transmissions, engine cranks, wheel speed measurement, integrated bearings and seals and for shaft speed measurement in pumps, motors and compressors. These products are designed to provide increased flexibility and may be used in most types of mounting configurations.
Honeywell’s unique solution utilizes the AMR bridge in saturation, which provides a more stable output response when the system has vibration, sudden air gap changes, or target runout without requiring complex magnitude compensation algorithms. The AMR signal has greater sensitivity than Hall-effect sensor ICs, and does not require automatic gain control or chopper stabilization that can lead to increased jitter over the operating range.
*VM721V1, VM721D1 only
|Quadrature Speed and Position Sensing in Industrial Speed Applications Using Multipole Ring Magnet/Encoder Targets||Application Note||English||2MB|
|Speed and Direction Sensing in Transmission Applications Using Multipole Ring Magnet Encoder Targets||Application Note||English||632KB|
|Speed and Direction Sensing in Wheel Speed Applications Using Multipole Ring Magnet/Encoder Targets||Application Note||English||598KB|
|AMR Ring Magnet Sensor IC Jitter Test Performance Results||Technical Information||English||701KB|
|Position Sensors Range Guide||Product Range Guide||English||2MB|
|Magnetic Sensor IC Selection Chart||Line Card/Selection Chart||English||176KB|
|Magnetic Sensor IC Product Line Card||Line Card/Selection Chart||English||433KB|
|Product||Product Type||Package Type||Magnetic Actuation Type|
|VM821Q1||Anisotropic magnetoresistive (AMR) speed, direction, or position sensor IC||4-pin SIP, 500 units/bag||AMR bridge array|
|VM721D1||Anisotropic magnetoresistive (AMR) speed and direction sensor IC||2-pin SIP, 500 units/bag||AMR bridge array|
|VM721V1||Anisotropic magnetoresistive (AMR) speed sensor IC||2-pin SIP, 500 units/bag||AMR bridge array|