EVAL-AD2S1200SDZ Analog Devices, EVAL-AD2S1200SDZ Datasheet
EVAL-AD2S1200SDZ
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EVAL-AD2S1200SDZ Summary of contents
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... Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices ...
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AD2S1200 APPLICATIONS Electric power steering Electric vehicles Integrated starter generator/alternator Encoder emulation Automotive motion sensing and control PRODUCT HIGHLIGHTS • Complete Resolver-to-Digital Interface: The AD2S1200 provides the complete solution for digitizing resolver signals (12-bit resolution) with on-board programmable sinusoidal oscillator. ...
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TABLE OF CONTENTS AD2S1200–Specifications ................................................................4 Absolute Maximum Ratings ............................................................6 ESD Caution ..................................................................................6 Pin Configuration and Function Descriptions .............................7 Resolver Format Signals ...................................................................8 Principle of Operation......................................................................9 Fault Detection Circuit.................................................................9 Connecting the Converter .........................................................11 Absolute Position and Velocity Output ....................................12 Parallel Interface..........................................................................12 ...
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AD2S1200 AD2S1200–SPECIFICATIONS Table 1. ( 5.0 V ± −40°C to +125°C CLKIN 8.192 MHz, unless otherwise noted Parameter Sin, Cos INPUTS 1 Voltage Input Bias Current Input Impedance Common Mode Volts Phase Lock ...
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Parameter FAULT DETECTION BLOCK (CONT.) DOS Sin/Cos Threshold Sin/Cos Mismatch Angular Accuracy (Worst Case) Angular Latency (Worst Case) Time Latency LOT Tracking Threshold Time Latency Hysteresis VOLTAGE REFERENCE REFOUT Drift PSRR CHARGE PUMP OUTPUT (CPO) Frequency Duty Cycle POWER SUPPLY ...
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AD2S1200 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage ( Supply Voltage ( Input Voltage Output Voltage Swing Operating Temperature Range (Ambient) Storage Temperature Range Lead Temperature Soldering Vapor Phase (60 sec) Infrared (15 sec) ESD ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS DB10/SCLK 8 Table 3. Pin Function Descriptions Pin No. Pin Name SAMPLE 5 RDVEL 6 SOE 7 DB11/SO 8 DB10/SCLK 9–15 DB9–DB3 16 DGND ...
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AD2S1200 RESOLVER FORMAT SIGNALS × Sin(ϖ θ × Sin(ϖt) × Sin(θ (A) CLASSICAL RESOLVER A resolver is a rotating transformer typically with a primary winding on ...
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PRINCIPLE OF OPERATION The AD2S1200 operates on a Type II tracking closed-loop principle. The output continually tracks the position of the resolver without the need for external convert and wait states. As the resolver moves through a position equivalent to ...
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AD2S1200 Signal Degradation Detection Degradation of signal (DOS) is detected when either resolver input (Sin or Cos) exceeds the specified DOS Sin/Cos threshold by comparing the monitor signal to a fixed maximum value. DOS is also detected when the amplitude ...
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CONNECTING THE CONVERTER Refer to Figure 5. Ground should be connected to the AGND pin and DGND pin. Positive power supply V should be connected to the AV pin and DV DD values for the decoupling capacitors are 10 nF ...
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AD2S1200 ABSOLUTE POSITION AND VELOCITY OUTPUT The angular position and angular velocity are represented by binary data and can be extracted either via a 12-bit parallel interface or a 3-wire serial interface that operates at clock rates ...
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CK CLKIN t 1 SAMPLE CS RD RDVEL DATA DON'T CARE Table 5. Parallel Port Timing Parameter Description t Clock Period (= 1/8.192 MHz SAMPLE Pulse Width 1 t Delay from SAMPLE before RD/CS Low 2 t ...
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AD2S1200 SERIAL INTERFACE The angular position and angular velocity are available on the AD2S1200 in two 12-bit registers. These registers can be accessed via a 3-wire serial interface, SO and SCLK, that operates at clock rates up to ...
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CK CLKIN t 1 SAMPLE CS RD RDVEL SCLK MSB Table 6. Serial Port Timing Parameter Description t MSB Read Time from RD/CS to SCLK 8 t Enable Time RD/ ...
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AD2S1200 INCREMENTAL ENCODER OUTPUTS The incremental encoder emulation outputs A, B, and NM are free running and are always valid, providing that valid resolver format input signals are applied to the converter. The AD2S1200 emulates a 1024-line encoder. Relating this ...
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... Sin and Cos signals generated by determining the zero crossing of either the Sin or Cos (which- ever signal is larger, to improve phase accuracy) and evaluating the phase of the resolver reference excitation. The synthetic reference reduces the phase shift between the reference and Sin/Cos inputs to less than 10° ...
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AD2S1200 CIRCUIT DYNAMICS AD2S1200 LOOP RESPONSE MODEL ERROR (ACCELERATION) VELOCITY c 1–az θ k1 × –1 1–z 1–bz – Sin/Cos LOOKUP Figure 11. RDC System Response Block Diagram The RDC is a mixed-signal device, which uses two A/D ...
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FREQUENCY (Hz) Figure 12. RDC System Magnitude Response 0 –20 –40 –60 –80 –100 –120 –140 –160 –180 –200 1 10 100 1k FREQUENCY (Hz) ...
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AD2S1200 CLOCK REQUIREMENTS To achieve the specified dynamic performance, an external crystal of 8.192 MHz must be used at the CLKIN, XTALOUT pins. The position and velocity accuracy are guaranteed for operation with a 8.192 MHz clock. However, the position ...
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OUTLINE DIMENSIONS 1.45 1.40 1.35 0.15 SEATING 0.05 PLANE ROTATED 90° CCW ORDERING GUIDE Model Temperature Range AD2S1200YST −40°C to +125°C AD2S1200WST −40°C to +125°C 0.75 1.60 MAX 0.60 0.45 1 SEATING PLANE 10° 6° 0.20 2° ...
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AD2S1200 NOTES Rev Page ...
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NOTES Rev Page AD2S1200 ...
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... AD2S1200 NOTES © 2003 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C04406-0-10/03(0) Rev Page ...