سنسور و مبدل انکودر

Product Attributes

Introduction

The AR25 is a miniature absolute encoder ASIC that is designed to cater to the growing demand for space-constraint applications. Employing the advanced reflective optical-encoding theory, the AR25 Series offer high position accuracy with a correction algorithm, which is unattainable by magnetic encoders. The AR25 encoder is a one-chip solution that has the flexibility to cater to variable overall diameters, ranging from 30 mm to 60 mm. The AR25 also supports through-hole solutions up to 30 mm in diameter. User-programmable resolutions are from 15-bit to 25-bit single-turn absolute outputs. In addition, the AR25 also provides differential analog sine/cosine or digital incremental ABIUVW signals with configurable CPRs and pole-pairs. The AR25 also comes with a state-of-the-art Auto-Calibration feature that eases customer’s integration into their end systems. The AR25 Series also supports integration with the proprietary battery-less Energy Harvesting MultiTurn (EHMT) solution. Alternatively, other multi-turn solutions like gear-based and battery backup are also supported by a dedicated MT interface port. For power supply, the ASIC supports dual-mode operating voltages of either 3.3V or 5V, which are suitable for handheld and portable device applications. The operating temperature range is -40℃ to 125℃, suitable for most industrial applications. To enhance the user system-design flexibility, the AR25 offers various protocols that are selectable by the user. Among the available protocols are the Encoder Serial Link (ESL) or RS485 half-duplex protocol, SSI, BiSS-C, and SPI 4-wire.

Features

• Miniature surface-mount QFN package: 6 mm (L) × 6 mm (W) × 1.05 mm (H)
• User-programmable absolute resolution: 15 bits to 25 bits
• User-programmable incremental output (ABI) resolutions ranging from 1 CPR to 2^20 CPRs
• User-programmable commutation signals (UVW) ranging from 1 to 32 pole-pairs
• High-temperature range of -40℃ to 125℃ suitable for most industrial operations
• Dual-mode operating voltages of 3.3V and 5V, enabling handheld and portable device applications
• Multi-turn integration: EHMT, gear, or battery backup
• Optical radius (ROP) flexibility: Blind-hollow or throughshaft applications
• Built-in line transceiver for protocol with selectable drivability strength
• Auto-accuracy calibration with a constant speed that is one click away
• Selectable communication protocols:
  • RS485 (2.5/5/10 Mb/s)
  • ESL (2.5/5/10 Mb/s)
  • SSI 2-wire (up to 10 MHz)
  • SPI 4-wire (up to 10 MHz)
  • BiSS-C (up to 10 MHz)
• External memory support up to 128 Kb
• Built-in temperature sensor
• RoHS compliance

Applications

• Robotic automation and engineering
• Factory automation and drone
• Medical and dentistry devices and equipment
• High-accuracy portable and handheld devices
• Miniature motor, servo motor, and linear actuator
• Through-shaft motor, gear motor, and speed reducer