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AD7836ASZ bảng dữ liệu(PDF) 1 Page - Analog Devices |
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1 / 12 page REV. A 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 LC2MOS Quad 14-Bit DAC AD7836 FEATURES Four 14-Bit DACs in One Package Voltage Outputs Separate Offset Adjust for Each Output Reference Range of 5 V Maximum Output Voltage Range of 10 V Clear Function to User-Defined Code 44-Pin MQFP Package APPLICATIONS Process Control Automatic Test Equipment General Purpose Instrumentation GENERAL DESCRIPTION The AD7836 contains four 14-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 AD7836 accepts 14-bit parallel loaded data from the exter- nal bus into one of the input latches under the control of the WR, CS and DAC channel address pins, A0–A2. The DAC outputs are updated individually, on reception of new data. In addition, the SEL input can be used to apply the user programmed value in DAC Register E to all DACs, thus setting all DAC output voltages to the same level. The contents of the DAC data registers are not affected by the SEL input. 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 AD7836 is available in a 44-lead MQFP package. FUNCTIONAL BLOCK DIAGRAM DATA REG A DATA REG B MUX DAC A MUX MUX MUX DATA REG C DATA REG D DATA REG E X1 X1 X1 X1 X1 X1 X1 X1 R R R R R R R R INPUT BUFFER AD7836 ADDRESS DECODE DUTGND D DUTGND C VOUTD DUTGND B VOUTC DUTGND A VOUTB VOUTA A0 A1 A2 DB0 WR CS DB13 VCC VSS VDD VREF(+)A SEL AGND DGND 14 14 14 14 14 DAC B DAC D VREF(–)A VREF(+)B VREF(–)B DAC B VREF(+)D VREF(–)D VREF(+)C VREF(–)C CLR 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 |
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Mô tả tương tự - AD7836ASZ |
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