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部品型式

AD7839AS

製品説明
仕様・特性

a Octal 13-Bit, Parallel Input, Voltage-Output DAC AD7839 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 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 external 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 simultaneously by taking the LDAC input low. APPLICATIONS Automatic Test Equipment Process Control General Purpose Instrumentation 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. FUNCTIONAL BLOCK DIAGRAM VCC VSS VREF(+) VREF(–) AB VDD AB DUTGND CD AD7839 13 DUTGND AB R INPUT 13 REG A DAC REG A DAC A VOUTA R DB12 13 INPUT 13 REG B DAC REG B DAC B VOUTB R 13 INPUT 13 REG C DAC REG C R 13 DAC C VOUTC WR R 13 ADDRESS DECODE CS A1 R 13 DB0 A0 R 13 13 A2 INPUT 13 REG D DAC REG D 13 INPUT 13 REG E DAC REG E 13 INPUT 13 REG F DAC REG F 13 INPUT 13 REG G DAC REG G 13 INPUT 13 REG H DAC REG H 13 R DAC D VOUTD DAC E VOUTE LDAC 13 R R R R R R R R DAC F VOUTF 13 DAC G VOUTG 13 DAC H VOUTH GND VREF(+) VREF(–) GH GH VREF(+) VREF(–) CDEF CDEF CLR DUTGND EF DUTGND GH 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. 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

ブランド

AD

会社名

Analog Devices

本社国名

U.S.A

事業概要

半導体デバイスを製造するアメリカの多国籍企業。特にADC、DAC、MEMS、DSPなどに強い。現在は 65nm から 3μm のプロセスルールの回路を設計している。

供給状況

　
Not pic File
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