Overview: Data Sheet AR25DP
Smart Programmable 25-Bit Absolute Encoder ASIC in Dust Protection Package Overview
The Broadcom® AR25DP is a miniature absolute encoder ASIC that is designed to meet the growing demand for space-constraint applications. Utilizing advanced reflective optical encoding technology, the AR25DP series delivers high positional accuracy through a correction algorithm that magnetic encoders cannot achieve.
The AR25DP encoder is a one-chip solution that supports a wide range of overall diameters, ranging from 30 mm to 55 mm. The AR25DP also supports through-hole solutions up to 30-mm inner diameter. User-programmable resolutions range from 15-bit to 25-bit single-turn absolute outputs. Additionally, the AR25DP provides differential analog sine/cosine or digital incremental ABIUVW signals with configurable counts per revolution (CPR) and pole-pair settings. Its state-of-the-art auto-calibration feature simplifies integration into end-user systems.
The AR25DP series is compatible with the Broadcom proprietary battery-less Energy Harvesting Multi-Turn (EHMT) solution. It also supports alternative multi-turn mechanisms, such as gear-based systems and batterybacked counters, via a dedicated multi-turn (MT) interface port.
For power, the ASIC supports dual-mode operation at either 3.3V or 5V, making it suitable for versatile integration into a wide range of industrial applications. It operates reliably across a wide temperature range of –40°C to 125°C, ideal for most industrial environments. To enhance design flexibility, the AR25DP offers a variety of user-selectable communication protocols. Supported protocols include Encoder Serial Link (ESL), RS-485 half-duplex, SSI, BiSS-C, and SPI 4-wire.
