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AD2S1200 データシート(PDF) 1 Page - Analog Devices |
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AD2S1200 データシート(HTML) 1 Page - Analog Devices |
1 / 24 page 12-Bit R/D Converter with Reference Oscillator AD2S1200 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. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2003 Analog Devices, Inc. All rights reserved. FEATURES Complete monolithic R/D converter Parallel and serial 12-bit data ports System fault detection Absolute position and velocity outputs Differential inputs ±11 arc minutes of accuracy 1,000 rps maximum tracking rate, 12-bit resolution Incremental encoder emulation (1,024 pulses/rev) Programmable sinusoidal oscillator on-board Compatible with DSP and SPI® interface standards 204.8 kHz square wave output Single-supply operation (5.00 V ± 5%) −40°C to +125°C temperature rating 44-lead LQFP package 4 kV ESD protection GENERAL DESCRIPTION The AD2S1200 is a complete 12-bit resolution tracking resolver- to-digital converter, integrating an on-board programmable sinusoidal oscillator that provides sine wave excitation for resolvers. An external 8.192 MHz crystal is required to provide a precision time reference. This clock is internally divided to generate a 4.096 MHz clock to drive all the peripherals. The converter accepts 3.6 V p-p ± 10% input signals, in the range of 10 kHz to 20 kHz on the Sin and Cos inputs. A Type II servo loop is employed to track the inputs and convert the input Sin and Cos information into a digital representation of the input angle and velocity. The bandwidth of the converter is set internally to 1.7 kHz with an external 8.192 MHz crystal. The maximum tracking rate is 1,000 rps. FUNCTIONAL BLOCK DIAGRAM REFERENCE OSCILLATOR (DAC) ADC SinLO Sin ANGLE θ ANGLE φ ADC CosLO Cos EXC EXC A B NM SAMPLE MONITOR ERROR MONITOR (204.8kHz) CPO REFBYP REFOUT FS1 FS2 XTALOUT CLKIN (8.192MHz) DOS LOT DIR (4.096MHz) ERROR ERROR CALCULATION/ SIGNAL MONITOR DEMODULATOR CS RD POSITION INTEGRATOR POSITION REGISTER MULTIPLEXER DB11 SO SOE RDVEL RESET DB10 SCLK DB9–DB0 AD2S1200 DATA BUS OUTPUT VELOCITY REGISTER ENCODER EMULATION SYNTHETIC REFERENCE VOLTAGE REFERENCE INTERNAL CLOCK GENERATOR CLOCK DIVIDER FAULT INDICATORS DIGITAL FILTER VELOCITY INTEGRATOR Figure 1. |
同様の部品番号 - AD2S1200_15 |
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同様の説明 - AD2S1200_15 |
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