AS5215 Automotive Rotary Encoder IC

Description

The AS5215 is a redundant, contactless rotary encoder sensor for accurate angular measurement over a full turn of 360° and over an extended ambient temperature of -40°C to +150°C.

Based on an integrated Hall element array the angular position of a simple two-pole magnet is translated into analog output voltages. The angle information is provided by means of buffered sine and consine voltages. This approach gives maximum flexibility in system design, as it can be directly integrated into existing architectures and optimized for various applications in terms of speed and accuracy.

With two independent dies in one package, the AS5215 offers true redundancy. The sensitivity of the device, as well as the output mode (differential or single ended) is programmable to keep highest system flexibilty.

An SSI Interface is implemented for signal path configuration as well as a one time programmable register block (OTP), which allows the customer an adjustment of the signal path gain for different mechanical constraints and magnetic fields.

The single die version AS5115 is available in an SSOP-16 package.

Key Features

• Contactless angular position encoding
• High precision analog output
• Buffered Sine and Cosine signals
• SSI Interface
• Low power mode
• Programmable output modes:
  • Differential
  • Single ended
• Programmable sensitivity
• Wide magnetic field input range: 20-80 mT
• Wide temperature range: -40°C to +150°C
• Automotive qualified to AEC-Q100, grade 0
• Thin punched QFN 32 (7x7) package

Applications

• Electronic power steering
• Contactless potentiometer
• Contactless rotary switches
• General industrial applications

Block diagram for AS5215 Automotive Rotary Encoder IC