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Precision ADCs
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Precision ADCs
Documents AD2S1200: interpreting the output velocity information
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  • +Documents
  • +General: FAQ
  • +AD1139: FAQ
  • +AD1556: FAQ
  • +AD1580: FAQ
  • +AD1582: FAQ
  • -AD2S1200: FAQ
    • AD2S1200: interpreting the output velocity information
    • AD2S1200: Maximun phase shift that can be tolerated between the reference excitation and the sin/cos signals?
    • AD2S1200: MSB to LSB order of Databits is different to other AD2S parts
    • AD2S1200: SinCos Common Mode Input Voltage
    • AD2S1200: Which device grade is populated on the AD2S1200CB evaluation board?
    • Changing R11 and R17 for AD2S1200
    • What is a power consumption of AD2S1200?
    • Why AD2S1200 pin20 toggling with /RDVEL low and Resolver stationary?
    • AD2S1200: The full scale value for the velocity output is not given in datasheet
    • AD2S1200: What is full scale of velocity output and it is programmable or fixed?
    • We are having some problems in the field with errors detected by the AD2S1200.
    • AD2S12xx SIN/COS input CMV query
    • AD2S1200 or alternative for use with 2kHz excitation?
    • AD2S1200 velocity output resolution
    • AD2S1200: Angular position data format vs, Angular velocity data format
    • AD2S1200: Can AD2S1200 be used with "SINCOS" sensor?
    • AD2S1200: Can I use both the serial and the parallel mode for velocity and position information?
    • AD2S1200: Can I use split supplies of +3.3V for DVDD and +5V for AVDD?
    • AD2S1200: Connection methods
    • AD2S1200: Data bus high impedance mode control and max current load
    • AD2S1200: Does the angular accuracy figure take into account missing codes?
    • AD2S1200: How are angular accuracy and resolution linked ?
  • +AD2S1205: FAQ
  • +AD2S1210: FAQ
  • +AD2S75: FAQ
  • +AD2S80: FAQ
  • +AD2S80A: FAQ
  • +AD2S82A: FAQ
  • +AD2S83: FAQ
  • +AD2S90: FAQ
  • +AD2S99: FAQ
  • +AD4110-1: FAQ
  • +AD411x: FAQ
  • +AD5940: FAQ
  • +AD598: FAQ
  • +AD650: FAQ
  • +AD652: FAQ
  • +AD654: FAQ
  • +AD7091: FAQ
  • +AD7091r: FAQ
  • +AD711: FAQ
  • +AD7124-4: FAQ
  • +AD7124-8: FAQ
  • +AD7134: FAQ
  • +AD713: FAQ
  • +AD7142: FAQ
  • +AD7147: FAQ
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  • +AD7190: FAQ
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  • +AD7280: FAQ
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  • +AD7616 FAQ
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  • +AD7653: FAQ
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  • +AD7663: FAQ
  • +AD7674: FAQ
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  • +AD7760: FAQ
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  • +AD7766: FAQ
  • +AD7768: FAQ
  • +AD777x: FAQ
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  • +AD7993: FAQ
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  • +EVAL-AD7719-EB: FAQ
  • +EVAL-ADAS3022EDZ: FAQ
  • +RDC1740: FAQ
  • +AD4116: FAQ
  • AD7398 SPI Voltage vs VCC
  • +DC590, DC2026, QuikEval: FAQs
  • +Precision Technology Learning Modules
  • Programming FMC FRU ID EEPROM on Linux

AD2S1200: interpreting the output velocity information

Q 

When accessing the velocity information. ie /RDVEL pin is low. What are the
units that the velocity is measured in? And what are the limits that the device
can read?

 

A 

The digital velocity output of the AD2S1200 represents the velocity of the
resolver shaft rotating in either a clockwise or anti-clockwise direction. The
digital output is in twos complement format and is scaled to a maximum velocity
of +/-1,000rps [60,000rpm] i.e. when reading back velocity 800h will represent
-1,000rps and 7FFh will represent +1,000rps. Each bit is equivalent to 1000rps
/ 2048 i.e. 0.488rps.

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