Features and Benefits

  • Chinese data sheet available
  • Complete monolithic resolver-to-digital converter
  • 3125 rps maximum tracking rate (10-bit resolution and CLKIN = 10.24 MHz)
  • ±2.5 (+ 1 LSB) arc minutes of angular accuracy (B and D grades)
  • 10-/12-/14-/16-bit resolution, set by user
  • Parallel and serial 10-bit to 16-bit data ports
  • Absolute position and velocity outputs
  • System fault detection
  • Programmable fault detection thresholds
  • Differential inputs
  • Incremental encoder emulation
  • Programmable sinusoidal oscillator on-board
  • Compatible with DSP and SPI standards
  • 5 V supply with 2.3 V to 5.25 V logic interface
  • −40°C to +125°C temperature rating (C, D, and W grades)
  • AEC-Q100 qualified for automotive applications
  • ASIL B safety assessment certificate available
  • Safety manual available
AD2S1210-EP supports defense and aerospace applications (AQEC standard)
  • Download AD2S1210-EP Data Sheet (pdf)
  • Military temperature range: (−55°C to +125°C)
  • Controlled manufacturing baseline
  • One assembly/test site
  • One fabrication site
  • Enhanced product change notification
  • Qualification data available upon request
  • V62/11604 DSCC Drawing Number

Product Details

The AD2S1210 is a complete 10-bit to 16-bit resolution tracking resolver-to-digital converter, integrating an on-board programmable sinusoidal oscillator that provides sine wave excitation for resolvers.

The converter accepts 3.15 V p-p ± 27% input signals, in the range of 2 kHz to 20 kHz on the sine and cosine inputs. A Type II servo loop is employed to track the inputs and convert the input sine and cosine information into a digital representation of the input angle and velocity. The maximum tracking rate is 3125 rps.

The AD2S1210WDSTZ and the AD2S1210WDSTZRL7 models have been approved by an independent accredited body for use in Automotive Safety Integrity Level B rated applications according to ISO 26262. Contact your local Analog Devices, Inc., sales office to obtain a copy of the safety manual and ASIL B safety assessment certificate.


  1. Ratiometric tracking conversion. The Type II tracking loop provides continuous output position data without conversion delay. It also provides noise immunity and tolerance of harmonic distortion on the reference and input signals.
  2. System fault detection. A fault detection circuit can sense loss of resolver signals, out-of-range input signals, input signal mismatch, or loss of position tracking. The fault detection threshold levels can be individually programmed by the user for optimization within a particular application.
  3. Input signal range. The sine and cosine inputs can accept differential input voltages of 3.15 V p-p ± 27%.
  4. Programmable excitation frequency. Excitation frequency is easily programmable to a number of standard frequencies between 2 kHz and 20 kHz.
  5. Triple format position data. Absolute 10-bit to 16-bit angular position data is accessed via either a 16-bit parallel port or a 4-wire serial interface. Incremental encoder emulation is in standard A-quad-B format with direction output available.
  6. Digital velocity output. 10-bit to 16-bit signed digital velocity accessed via either a 16-bit parallel port or a 4-wire serial interface.


  • DC and ac servo motor control
  • Encoder emulation
  • Electric power steering
  • Electric vehicles
  • Integrated starter generators/alternators
  • Automotive motion sensing and control

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (3)

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IBIS Models

Reference Designs (2)

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.