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MDB28-28mm modular

Product Description:

MDB28 magnetic rotary encoder module has a precision sensor having an integrated Hall element for scanning a permanent Dipole magnet. The Sensor itself generates a constant amplitude Sine and Cosine voltages that is used for angle calculations. These Sine and Cosine signals are further interpolated to get the Incremental or Absolute signals with resolutions up to 14 bits per rotation.

MDB28 module is a 28mm PCB assembly which has a wide operating voltage range suitable for many applications.

Salient Features:

  • 28mm Square PCB assembly module.
  • Wide operating voltage range 5V DC and 6.5V to 30V DC.
  • Variety of outputs supported like Analog Sin-Cos output, Incremental RS422, Absolute SSI and BiSS-C protocol.
  • Supports up to 14 bits (16384 positions) per rotation Absolute and Incremental output.
  • Accuracy +/- 0.5°.
  • High Speed operation up to 20000 rpm at finest resolution.
  • 3600 CPR also available to give angular resolutions easier for mathematical calculations.



  • Packaging Machines
  • Automation
  • Paper and Textile industry
  • Defence Projects
  • Medical Engineering
  • Renewable Energy
  • Robotics
  • Special Purpose Machines
  • Motor Drive Technology
  • elevator technology
  • Automotive Industry
  • And many more...

Mechanical drawings :


MDB20 mgnt


Specifications Details
Power Supply Option 1: +5V DC (±5%) or
Option 2: 6.5V DC to 30V DC
Current consumption 90mA maximum
Output Depends on the model
(See datasheet)
Maximum RPM 20000 to 120000 RPM
Operating Temperature -40°C to +125°C
Storage Temperature -40°C to +125°C
Accuracy ±0.5°

Available models:

MDB28AS / AC - Analog single ended (AS) / complementary (AC) Sine Cosine output with a single sine-cosine cycle per rotation
MDB28IC - Incremental open collector A, B, and Z output with up to 16384 counts per rotation (CPR)
MDB28IR - Incremental RS422 A, B and Z output with up to 16384 counts per rotation (CPR)
MDB28SB / SG - Absolute output on Synchronous Serial interface (SSI) with Binary (SB) / Grey (SG) coded data up to 13 Bits per rotation
MDB28BC - Absolute output on BiSS-C data up to 14 Bits per rotation
MDB28UR - UVW differential output with up to 16 folds per rotation
MDB28ZS/ZG/ZB - Analog Sine Cosine + Absolute SSI + Incremental up to 14 Bits per rotation

Ordering Codes:

We also make customised encoders
Please contact our sales representative for standard as well as any customised encoders.
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