AD2S1200: FAQ

Created over 4 years ago
Updated 2 months ago

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AD2S1200 or alternative for use with 2kHz excitation?

Q The minimum excitation frequency of the AD2S1200 is 10kHz according to the data sheet. Is there a mode that the AD2S1200 can run with 2kHz excitation? Or is there an alternative part that can run at…
AD2S1200 velocity output resolution

Q If the motor is running under a slow speed for example 0.5 rps, is the 0.488rps LSB a little bit small? Is there any way to improve it? A If the customer is using the velocity output as feedback…
AD2S1200: Angular position data format vs, Angular velocity data format

Q There appears to be different data formats for the angular position data compared to the angular velocity data? A For the AD2S1200, the angular position data format is unsigned binary, with all…
AD2S1200: Can AD2S1200 be used with "SINCOS" sensor?

Q Can AD2S1200 be used with "SINCOS" sensor? A Yes, if by "SINCOS" sensor you mean a Resolver (resolver is like a motor/generator with windings at 90 degrees so it gives Sin/Cos outputs). The converter…
AD2S1200: Can I use both the serial and the parallel mode for velocity and position information?

Q Can I use both the serial and the parallel mode for velocity and position information respectively? (By switching respective signal inputs) There are not many 2s complement DACs available in parallel…
AD2S1200: Can I use split supplies of +3.3V for DVDD and +5V for AVDD?

Q Can I use split supplies of +3.3V for DVDD and +5V for AVDD on AD2S1200? A The AD2S1200 cannot operate on split supplies of +3.3V for DVDD and +5V for AVDD. The supply voltage range on the datasheet…
AD2S1200: Connection methods

Q In case of LOS, is pulling -RESET low for duration Ttrack enough or must the part, pulling reset low, be fully powered off then on? In brief is reset enough or do we need to cycle power? Should the…
AD2S1200: Data bus high impedance mode control and max current load

Q Is the high impedance mode of the data bus lines just controlled by the RD-Signal or also by the CS-Signal? What is the max. current load of data bus signals? A The output buffer is enabled when…
AD2S1200: Does the angular accuracy figure take into account missing codes?

Q In the accuracy specification, does the 'missing codes' figure just refer to cases where the least significant bit doesn't change between angles which differ by 1 lsb.? Does the angular accuracy figure…
AD2S1200: How are angular accuracy and resolution linked ?

Q How are angular accuracy and resolution linked and why does a 12 bit resolver to digital have 10.6 arcmin instead of 5.3 arcmin? A There are 21600 (360*60) arc min in 1 revolution. In 12 bit…

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AD2S1200: FAQ

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 ?

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