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AD7839 데이터시트(PDF) 1 Page - Analog Devices |
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AD7839 데이터시트(HTML) 1 Page - Analog Devices |
1 / 12 page 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a AD7839 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., 1999 Octal 13-Bit, Parallel Input, Voltage-Output DAC FUNCTIONAL BLOCK DIAGRAM DAC REG A INPUT REG A 13 DAC E AD7839 DB12 DB0 WR CS A0 A1 A2 LDAC RR RR R R R R R R R R R R R R 13 13 DAC REG B INPUT REG B 13 13 13 DAC REG C INPUT REG C 13 13 13 DAC REG D INPUT REG D 13 13 13 DAC REG E INPUT REG E 13 13 13 DAC REG F INPUT REG F 13 13 13 DAC REG G INPUT REG G 13 13 13 DAC REG H INPUT REG H 13 13 13 DAC D DAC C DAC F DAC B DAC A DAC G DAC H VCC VSS VDD VREF(+) AB VREF(–) AB DUTGND CD DUTGND AB VOUTA VOUTB VOUTC VOUTD VOUTE VOUTF VOUTG VOUTH DUTGND GH DUTGND EF VREF(–) CDEF VREF(+) CDEF VREF(–) GH VREF(+) GH GND CLR FEATURES Eight 13-Bit DACs in One Package Voltage Outputs Offset Adjust for Each DAC Pair Reference Range of 5 V Maximum Output Voltage Range of 10 V Clear Function to User-Defined Voltage 44-Lead MQFP Package APPLICATIONS Automatic Test Equipment Process Control General Purpose Instrumentation GENERAL DESCRIPTION The AD7839 contains eight 13-bit DACs on one monolithic chip. It has output voltages with a full-scale range of ±10 V from reference voltages of ±5 V. The AD7839 accepts 13-bit parallel loaded data from the exter- nal bus into one of the input registers under the control of the WR, CS and DAC channel address pins, A0–A2. The DAC outputs are updated on reception of new data into the DAC registers. All the outputs may be updated simulta- neously by taking the LDAC input low. Each DAC output is buffered with a gain-of-two amplifier into which an external DAC offset voltage can be inserted via the DUTGNDx pins. The AD7839 is available in a 44-lead MQFP package. |
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