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NPI Body

Broadcom AR25 series

15-Bit to 25-Bit smart programmable absolute Encoder IC with ABI/UVW output

The AR25 Series is a miniature Absolute Encoder ASIC designed to cater to the growing demand of space-constrained applications. AR25 encoder is a one-chip solution that has the flexibility to cater for variable overall diameters, ranging from 30mm to 60mm. AR25 also supports through-hole solutions up to 30mm in diameter.

Key features

Miniature absolute encoder ASIC in surface mount QFN package: 6 mm x 6 mm
High temperature range of –40°C to 115°C suitable for most industrial operations
Dual-mode operating voltage of 3.3V and 5V, ideal for portable device applications
Selectable SSI, SPI, RS485, BiSS-C or Encoder Serial Link (ESL)

Additional features

User-programmable resolution ranging from:
Programmable up to 25 bit single turn
User-programmable incremental output (ABI) resolution ranging from 1 to 220 CPR
User-programmable commutation signal (UVW) ranging from 2, 3, 4, 5, 12, 30, 32 pole pair
Differential output for ABI and UVW
RoHs compliance

AR25 is user-programmable resolutions are from 15 bits up to 25 bits single-turn absolute outputs. In addition, AR25 also provides differential analog Sine/Cosine or digital incremental ABIUVW signals with configurable CPRs and pole-pairs. AR25 also comes with a state-of-the-art Auto-Calibration feature that ease Customers integration into their end systems.

AR25 comes with a recommended high temperature range of –40°C to 115°C suitable for most industrial applications. Dual-mode operating voltage of 3.3V and 5V enable handheld and portable device applications.

AR25 series also supports integration with Broadcom’s proprietary battery-less Energy Harvesting Multi-Turn (EHMT) solution. Alternatively, other multi-turn solutions like gear based and battery back-up are also supported via a dedicated MT interface port

To enhance the user system design flexibility, AR25 offers various protocols, which are selectable by the User. Among the protocols available are Encoder Serial Link (ESL) or RS485 half-duplex protocol, SSI, BiSS-C and SPI 4-wire.