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ADMC200 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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ADMC200 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 12 page a ADMC200 FUNCTIONAL BLOCK DIAGRAM RESET WR A0–3 RD CS IRQ CLK REFOUT REFIN CONVST U V W AUX PWMSYNC A AP B BP C CP STOP EMBEDDED CONTROL SEQUENCER INTERNAL REFERENCE 11-BIT A/D CONVERTER 12-BIT PWM TIMER BLOCK CONTROL REGISTERS VECTOR TRANSFORMATION BLOCK DATABUS CONTROL BUS D0 – D11 Motion Coprocessor 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. FEATURES Analog Input Block 11-Bit Resolution Analog-to-Digital (A/D) Converter 4 Single-Ended Simultaneously Sampled Analog Inputs 3.2 s Conversion Time/Channel 0 V–5 V Analog Input Range Internal 2.5 V Reference PWM Synchronized Sampling Capability 12-Bit PWM Timer Block Three-Phase Center-Based PWM 1.5 kHz–25 kHz PWM Switching Frequency Range Programmable Deadtime Programmable Pulse Deletion PWM Synchronized Output External PWM Shutdown Vector Transformation Block 12-Bit Vector Transformations Forward and Reverse Clarke Transformations Forward and Reverse Park Rotations 2.9 s Transformation Time DSP & Microcontroller Interface 12-Bit Memory Mapped Registers Twos Complement Data Format 6.25 MHz to 25 MHz Operating Clock Range 68-Lead PLCC Package Single 5 V DC Power Supply Industrial Temperature Range GENERAL DESCRIPTION The ADMC200 is a motion coprocessor that can be used with either microcontrollers or digital signal processors (DSP). It provides the functionality that is required to implement a digital control system. In a typical application, the DSP or micro- controller performs the control algorithms (position, speed, torque and flux loops) and the ADMC200 provides the neces- sary motor control functions: analog current data acquisition, vector transformation, and PWM drive signals. PRODUCT HIGHLIGHTS Simultaneous Sampling of Four Inputs A four channel sample and hold amplifier allows three-phase motor currents to be sampled simultaneously, reducing errors from phase coherency. Sample and hold acquisition time is 1.6 µs and conversion time per channel is 3.2 µs (using a 12.5 MHz system clock). One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000 Flexible Analog Channel Sequencing The ADMC200 support acquisition of 2, 3, or 4 channels per group. Converted channel results are stored in registers and the data can be read in any order. The sampling and conversion time for two channels is 8 µs, three channels is 11.2 µs, and four channels is 14.4 µs (using a 12.5 MHz system clock). Embedded Control Sequencer The embedded control sequencer off-loads the DSP or micro- processor, reducing the instructions required to read analog in- put channels, control PWM timers and perform vector trans- formations. This frees the host processor for performing control algorithms. Fast DSP/Microprocessor Interface The high speed digital interface allows direct connection to 16-bit digital signal processors and microprocessors. The ADMC200 has 12 bit memory mapped registers with twos complement data format and can be mapped directly into the data memory map of a DSP. This allows for a single instruction read and write interface. Integration The ADMC200 integrates a four channel simultaneous sam- pling analog-to-digital converter, analog reference, vector trans- formation, and three-phase PWM timers into a 68-lead PLCC. Integration reduces cost, board space, power consumption, and design and test time. REV. B |
Số phần tương tự - ADMC200 |
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Mô tả tương tự - ADMC200 |
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