25-bit absolute encoder for linear and hollow through application

31st July 2019
Source: Broadcom
Posted By : Lanna Cooper

The Broadcom AR35 Series offers 25-bit absolute encoder with a small form-fit factor to maximise the motion feedback system flexibility.

It employs Broadcom's patented reflective optical encoding theory. The AR35 series offers high accuracy with correction, which is unattainable by the magnetic encoder.

The encoders are designed for industrial applications with a high operating temperature range of -40°C to 115°C.

The AR35-L Linear series encoder is designed for linear scale applications with absolute mode of output, whereas AR35-T Series provides a maximum axial through-hole of 9.5mm for through shaft motor and axial cabling applications.

Key value proposition for hollow through and linear series

  • Compact in size
  • DFN package suitable for SMT production
  • Enabling hollow through rotary and linear operation
  • High temperature range -40 to 115°C
  • Highly versatile encoder with various concurrent output
  • Great flexibility with multiple time user programmable configuration
  • East of installation with hassle free alignment process
  • MSL 3.0

AR35-L25 linear with absolute output

Absolute linear

Code-strip window bar at 248 line per inch

Based analog pitch: 102.4um

User programmable absolute output

17 bits: 400nm pitch

21 bits: 25nm pitch

23 bits: 6.25nm pitch

25 bits: 1.56nm pitch

Codestrip dimension = 106.83mm (length) x 5mm (width)

AR35-L80 reflective linear with incremental output

Incremental linear

Code-strip window bar design at 318 line per inch

Based analog pitch: 30um

User programmable incremental output with AB quadrature

1 x interpolated: quadrature output at 20um pitch

2 x interpolated: quadrature output at 10um pitch

4 x interpolated: quadrature output at 5um pitch

8 x interpolated: quadrature output at 2.5um pitch

16 x interpolated: quadrature output at 1.5um pitch

Codestrip dimension = 83.68mm (length) x 5mm (width)

For more information, watch the video below.

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