ad2s34 Analog Devices, Inc., ad2s34 Datasheet
ad2s34
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ad2s34 Summary of contents
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... Antenna Monitoring CNC Machine Tools GENERAL DESCRIPTION The AD2S34 serie$ are 14-bit dual channel, continuous tracking resoJver-to-digilal converters. They have been designed specifi- cally for applications where space and weight are at a premium. Each 32-pin hybrid device contains two independent Type II servo loop tracking converters and a power oscillator suitable for exciting resolvers ...
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... Signal Voltage Allowable Phase Shift (Signal to Reference) Input Impedance --- --------- REFERENCE INPUTS (REF A, REF B) Reference Volrage Tolerance Input Impedance ACCELERA nON CONSTANT AD2S34xZlO AD2S34xZ40 ADZS34xZ60 STEP RESPONSE Large Stepl AD2S34xZlO AD2S34xZ40 AD2S34xZ60 POWER LINES (No Load on REF OUT) +Vs = +15 V dcl -Vs = -IS V del +VL=+5Vdc' ...
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... AD2S34xZlO AD2S34xZ40 AD2S34xZ60 Gain Scaling Accuracy Noise and Ripple at LSB Rate Dynamic Ripple (Peak) REFERENCE OUTPUT (REF OUT) Frequency! AD2S34xZlO AD2S34xZ.w AD2S34xZ60 Voltage! DATA TRANSFER (See Figure 3) Time to Data Stable (After Negative Edge of SEL A or SEL B) Time to Data in High Impedance State ...
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... B) receive further levels of testing and screening to ensure high levels of reliability. ESD SENSITIVITY The AD2S34 features input protection circuitry consisting of large "distributed" polysilicon series resistors to dissipate both high energy discharges (human body model) and fast, low energy pulses (charged device model). Proper ESD precaUtions are strongly recommended to avoid functional damage or performance degradation ...
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... ANALOGOEVICES fAX-ON-DEMAND HOTLINE PRINCIPLES OF OPERA nON The AD2S34 series operate on a Type 2 tracking closed-loop principle. The oUtpUt digiTal word continually tracks the posi- tion of the resolver shaft without the need for external convert commands and wait states. As the transducer moves through a position equivalent to the least significant bit weighting, the out- put digital word is updated by one LSB ...
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... ANALOGDEVICES fAX-ON-DEHAND HOTLINE AD2S34 SCALING FOR NONSTANDARD SIGNALS A featUre of these conveners is that the signal and reference in- puts can be resistively scaled to accommodate nonstandard inpUt signal and reference voltages which are outside the nominal :!:10% limits of the converter. Using this technique possi- ble to use a standard convener with a " ...
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... Reference to signal phase shift should be minimized ro re- duce quadrature effects and larger ripple. If the above precautions are taken, a very good noise and ripple performance can be achieved allowing the AD2S34 velocity sig- nals to be used in very noisy environments. DYNAMIC PERFORMANCE The transfer function of the converter is given below. ...
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... LSBs, etc. K" does not define maximum acceleration, only the error due [0 acceleration. The maximum acceleration for which the AD2S34 wilJ not lose track is of the order of 5° 265000 o/sec2or aboUt 730 revolutions/sec] for the 400 Hz option. ...