Renesas Electronics RAA2P452x Automatic Inductive Position Sensors

Renesas Electronics RAA2P452x Automatic Inductive Position Sensors are magnet-free sensors that can be used for absolute rotary, linear, or arc position sensing in automotive applications. These sensors work on the principle of eddy currents to detect the position of a simple metallic target that is moving above the sensing coil sets. The RAA2P452x position sensor ICs feature two sets of receiver coils, allowing them to measure two independent positions or operate in a high-resolution configuration. These sensors are cost-effective, suitable for harsh environments and high temperatures, and programmable through a single-wire UART.

Features

RAA2P4500:
- Automotive, low-speed, and single coil
- 3.3V±0.3V or 5.0V±0.5V voltage supply
- ISO 26262 compliant, fulfilling FuSa requirements up to ASIL-D
- Analog 12-bit, PWM 14-bit, SENT 14-bit, and I²C 14-bit output interfaces
- Single IC supports on-axis and off-axis rotation, linear, and arc motion
- Automatic Gain Control (AGC) to compensate for air-gap variations
- Autocalibration and 16-point linearization for enhanced accuracy
- Overvoltage ±18V, reverse-polarity ±18V, ESD, and short-circuit protection
- On-chip failure diagnostics
- External auxiliary sensor input
- AEC-Q100 Grade 0 qualified (-40°C to 160°C)
RAA2P4520:
- High-speed UART dual coil
- Automatic gain control (AGC) to compensate for air-gap variations
- 2µs propagation delay
- Up to 600,000rpm (electrical) rotational speed
- 3.3V±0.3V or 5.0V±0.5V voltage supply
- ISO 26262 compliant, fulfilling FuSa requirements up to single-chip ASIL-D at the system level
- High-speed UART up to 2Mbit/s and SENT 14-bit output interfaces
- Single IC supports on-axis and off-axis rotation, linear, and arc motion
- Overvoltage ±18V, reverse-polarity ±18V, ESD, and short-circuit protection
- On-chip failure diagnostics
- External auxiliary sensor input
- AEC-Q100 Grade 0 qualified (-40°C to 160°C)

RAA2P4524:
- Low-speed SPC dual-coil
- SPC (14-bit) output interfaces
- 2µs propagation delay
- 16-point linearization
- 3.3V±0.3V or 5.0V±0.5V voltage supply
- ISO26262 compliant to support up to ASIL-D requirements as a single chip
- SPC (14-bit) output interface
- External sensor input (temperature, humidity etc.)
- Overvoltage ±18V, reverse-polarity ±18V, ESD, and short-circuit protection

Applications

RAA2P4500:
- Gas and brake pedals
- Throttle Position Sensors
- Valves for thermal management
- Gear shifter
- Park lock actuator
- Liquid level sensing
- EGR
RAA2P4524:
- Steering Angle Sensors (SAS)
- Torque Only Sensors (TOS)
- Torque and Angle Sensors (TAS)

RAA2P4520:
- Traction motor position
- Starter generators
- Brake booster motor position sensors
- EPS
- Steering angle sensors
- Torque sensors
- Front wheel actuators
- Rear wheel steering