AD2S80ASE AD [Analog Devices], AD2S80ASE Datasheet
AD2S80ASE
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AD2S80ASE Summary of contents
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FEATURES Monolithic (BiMOS ll) Tracking R/D Converter 40-Pin DIP Package 44-Pin LCC Package 10-,12-,14- and 16-Bit Resolution Set by User Ratiometric Conversion Low Power Consumption: 300 mW typ Dynamic Performance Set by User High Max Tracking Rate 1040 RPS ...
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AD2S80A–SPECIFICATIONS Parameter SIGNAL INPUTS Frequency Voltage Level Input Bias Current Input Impedance Maximum Voltage REFERENCE INPUT Frequency Voltage Level Input Bias Current Input Impedance CONTROL DYNAMICS Repeatability Allowable Phase Shift Tracking Rate 1 Bandwidth ACCURACY Angular Accuracy Monotonicity Missing Codes ...
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Parameter DATA LOAD Sense 3 BUSY Sense Width Load 3 DIRECTION Sense Max Load 3 RIPPLE CLOCK Sense Width Reset Load DIGITAL INPUTS High Voltage Low Voltage DIGITAL INPUTS High Current Low Current, I ...
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AD2S80A–SPECIFICATIONS Parameter RATIO MULTIPLIER AC Error Output Scaling PHASE SENSITIVE DETECTOR Output Offset Voltage Gain In Phase In Quadrature Input Bias Current Input Impedance Input Voltage INTEGRATOR Open-Loop Gain Dead Zone Current (Hysteresis) Input Offset Voltage Input Bias Current Output ...
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RECOMMENDED OPERATING CONDITIONS Power Supply Voltage (+V , – Power Supply Voltage ...
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AD2S80A CONNECTING THE CONVERTER The power supply voltages connected to +V should be + and – and must not be reversed. The voltage applied to V can ...
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CONVERTER OPERATION When connected in a circuit such as shown in Figure 1 the AD2S80A operates as a tracking resolver-to-digital converter and forms a Type 2 closed-loop system. The output will auto- matically follow the input for speeds up to ...
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AD2S80A COMPONENT SELECTION The following instructions describe how to select the external components for the converter in order to achieve the required bandwidth and tracking rate. In all cases the nearest “preferred value” component should be used, and a 5% ...
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DATA TRANSFER To transfer data the INHIBIT input should be used. The data will be valid 600 ns after the application of a logic “LO” to the INHIBIT. This is regardless of the time when the INHIBIT is applied and ...
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AD2S80A CIRCUIT FUNCTIONS AND DYNAMIC PERFORMANCE The AD2S80A allows the user greater flexibility in choosing the dynamic characteristics of the resolver-to-digital conversion to ensure the optimum system performance. The characteristics are set by the external components shown in Figure 1, ...
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DEMODULATOR OUTPUT voltage will equal the DEMODULATOR INPUT). This provides a sig- nal at the DEMODULATOR OUTPUT which level proportional to the ...
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AD2S80A –3 –6 –9 –12 0.02f 0.04f 0.1f 0. FREQUENCY Figure 4. AD2S80A Gain Plot 180 135 –45 –90 –135 –180 0.02f 0.04f 0.1f 0. ...
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SOURCES OF ERRORS Integrator Offset Additional inaccuracies in the conversion of the resolver signals will result from an offset at the input to the integrator as it will be treated as an error signal. This error will typically be 1 ...
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AD2S80A CONNECTING THE RESOLVER The recommended connection circuit is shown in Figure 7. In cases where the reference phase relative to the input signals from the resolver requires adjustment, this can be easily achieved by varying the value of the ...
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REFERENCE INPUT 100nF COS HIGH RESOLVER SIGNALS REF LOW COS LOW SIN LOW SIN HIGH +12V 360 315 270 225 180 135 TIME – ms Figure 9. Large Step Response Curves for Typical ...
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... AD2S80AUD AD2S80ASE AD2S80ATE AD2S80AUE AD2S80ASD/883B AD2S80ATD/883B AD2S80ASE/883B AD2S80ATE/883B *D = Ceramic DIP Package Leadless Ceramic Chip Carrier Package. 40-Pin Ceramic DIP (D) Package switched dynamically. This reduces velocity offset levels at low tracking rates. For more information on the technique refer to “Dynamic Resolution Switching Using the Variable Resolution Monolithic Resolver-to-Digital Converters.” ...