AD2S99 Analog Devices, AD2S99 Datasheet
AD2S99
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AD2S99 Summary of contents
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... Interme- diate frequencies are available by adding an external resistor. Signal Loss Detection The AD2S99 has the ability to detect if both the transducer sec- ondary winding connections become disconnected from its SIN and COS inputs. The “LOS” output pin pulls high when a sig- nal loss is detected ...
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... AD2S99–SPECIFICATIONS Parameter FREQUENCY OUTPUT RANGE 2 kHz 5 kHz 10 kHz 20 kHz ACCURACY Frequency Amplitude Power Supply Rejection Ratio ANALOG OUTPUTS Amplitude EXC, EXC SYNREF SYNREF OFFSET Current Drive Capability EXC, EXC Capacitive Drive Total Harmonic Distortion EXC, EXC ANALOG INPUTS SIN, COS ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD2S99 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... AD2S99, the LOS output pin of the AD2S99 (Pin 11 Logic Lo ( 0.7 V). If both the SIN and COS signals on the re- via solver secondary windings fall below the LOS threshold level of DD the AD2S99, the LOS pin of the AD2S99 will pull Logic –4– 4 ...
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... AD2S99/AD2S90 TYPICAL CONFIGURATION Figure 3 shows a typical circuit configuration for the AD2S99 Oscillator and the AD2S90 Resolver-to-Digital Converter. The maximum level of the SIN and COS input signals to the AD2S90 should rms 10%. All the analog ground sig- nals should be star connected to the AD2S90 AGND pin. If ...
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... OUT Figure 4. AD2S99 and AD2S82A Example Configuration Coupling capacitor C3, and resistor to GND R3, between the SYNREF output of the AD2S99 and the REF input pin of the AD2S82A are optional. For additional information on selecting component values for the AD2S82A, please refer to the AD2S82A data sheet or the application note “Passive Compo- nent Selection and Dynamic Modeling for the AD2S80 Series Resolver-to-Digital Converters” ...
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... Figure 5. AD2S99 and AD2S93 Example Configuration REV. B shields should also be terminated at the AD2S93 AGND pin. The SYNREF output of the AD2S99 cannot be used as the REF input signal for the AD2S93. The zero crossing reference for the AD2S93 should be taken from the primary winding of the LVDT through a phase lead or lag network ...
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... OUT RMS R1 A SUITABLE AMPLIFIER FOR ABOVE IS THE OP279 Figure 7. Sample Buffer Configurations OUT SIN 5 AD2S99 REF SIN TOP VIEW DGND 6 (Not to Scale) COS 7 COS CONNECT Figure 8. The SSM2142 as a Single Ended to Differential ...