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AD2S83IP 数据表(PDF) 1 Page - Analog Devices |
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AD2S83IP 数据表(HTML) 1 Page - Analog Devices |
1 / 19 page REV. E 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. a Variable Resolution, Resolver-to-Digital Converter AD2S83 GENERAL DESCRIPTION The AD2S83 is a monolithic 10-, 12-, 14-, or 16-bit tracking resolver-to-digital converter. The converter allows users to select their own resolution and dynamic performance with external components. The converter allows users to select the resolution to be 10, 12, 14, or 16 bits and to track resolver signals rotating at up to 1040 revs per second (62,400 rpm) when set to 10-bit resolution. The AD2S83 converts resolver format input signals into a paral- lel natural binary digital word using a ratiometric tracking con- version method. This ensures high noise immunity and tolerance of long leads allowing the converter to be located remote from the resolver. The position output from the converter is presented via 3-state output pins which can be configured for operations with 8- or 16-bit bus. BYTE SELECT, ENABLE and INHIBIT pins ensure easy data transfer to 8- and 16-bit data bus, and outputs are provided to allow for cycle or pitch counting in external counters. A precise analog signal proportional to velocity is also available and will replace a tachogenerator. The AD2S83 operates over reference frequencies in the range 0 Hz to 20,000 Hz. PRODUCT HIGHLIGHTS High Accuracy Velocity Output. A precision analog velocity signal with a typical linearity of ±0.1% and reversion error less than ±0.3% is generated by the AD2S83. The provision of this signal removes the need for mechanical tachogenerators used in servo systems to provide loop stabilization and speed control. Resolution Set by User. Two control pins are used to select the resolution of the AD2S83 to be 10, 12, 14 or 16 bits allow- ing optimum resolution for each application. Ratiometric Tracking Conversion. This technique provides continuous output position data without conversion delay. It also provides noise immunity and tolerance of harmonic distor- tion on the reference and input signals. Dynamic Performance Set by the User. By selecting external resistor and capacitor values the user can determine band- width, maximum tracking rate and velocity scaling of the converter to match the system requirements. The component values are easy to select using the free component selection software design aid. MODELS AVAILABLE Information on the models available is given in the Ordering Guide. FUNCTIONAL BLOCK DIAGRAM FEATURES Tracking R/D Converter High Accuracy Velocity Output High Max Tracking Rate 1040 RPS (10 Bits) 44-Lead PLCC Package 10-, 12-, 14-, or 16-Bit Resolution Set by User Ratiometric Conversion Stabilized Velocity Reference Dynamic Performance Set by User Industrial Temperature Range APPLICATIONS DC and AC Servo Motor Control Process Control Numerical Control of Machine Tools Robotics Axis Control 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 A3 RIPPLE CLOCK R4 VCO I/P TRACKING RATE SELECTION R6 VELOCITY SIGNAL INTEGRATOR I/P BANDWIDTH SELECTION R3 C3 REFERENCE I/P HF FILTER R2 C2 C1 R1 DEMOD O/P INTEGRATOR O/P DIRECTION BUSY DIG GND 16 DATA BITS SC1 SC2 DATA LOAD BYTE SELECT 5V +12V –12V GND COS SIG GND SIN AC ERROR O/P VCO O/P C7 AD2S83 R7 3K3 C6 390pF R8 –12V +12V OFFSET ADJUST R9 R5 C4 C5 R – 2R DAC PHASE SENSITIVE DETECTOR VCO + DATA TRANSFER LOGIC 16-BIT UP/DOWN COUNTER SEGMENT SWITCHING OUTPUT DATA LATCH A2 A1 ENABLE INHIBIT |
类似零件编号 - AD2S83IP |
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类似说明 - AD2S83IP |
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