Allegro MicroSystems’ A1333 and A1339 0° to 360° angle sensor ICs provide contactless high-resolution angular position information based on magnetic Circular Vertical Hall (CVH) technology. The devices exploit a system-on-chip (SoC) architecture that includes: a CVH front end, digital signal processing, and supports multiple digital output formats, including Allegros first motor commutation outputs (UVW), and encoder outputs (A, B, I) for angle sensor ICs that can operate at either 3.3 V or 5 V.
Both devices are offered in both single and dual die versions for systems that require redundant sensors. They both include on-chip EEPROM technology, capable of supporting up to 100 read/write cycles, for flexible end-of-line programming of calibration parameters. They are viable for automotive applications requiring 0° to 360° angle measurements, such as motor position measurements for steering and braking systems and other high-speed actuators for pumps and transmissions that require low latency and high resolution. The A1339 also includes an integrated turns counter and low power mode features that enable it to track changes in the target magnetic field in automotive applications even when the vehicle is in the “key off” state.
Pricing in 1,000-piece quantities for the various configurations is outlined below:
Catalog part number |
Die Configuration |
1,000-piece price |
A1333LLETR-T |
Single die |
$1.5938 |
A1339LLETR-T |
Single die |
$2.1250 |
For further details and specs, datasheets are available for the A1333 and A1339.
Allegro MicroSystems
Worcester, MA
508-853-5000