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AD7399BR Datasheet(PDF) 1 Page - Analog Devices |
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AD7399BR Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 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 AD7398/AD7399 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 Quad, Serial-Input 12-Bit/10-Bit DACs FUNCTIONAL BLOCK DIAGRAM CLK GND VDD CS SDI DAC A REGISTER DAC A INPUT REG A INPUT REG B INPUT REG C INPUT REG D SERIAL REGISTER POWER ON RESET DAC B REGISTER DAC C REGISTER DAC D REGISTER DAC D DAC C DAC B VOUTA VOUTB VOUTC VOUTD VREFA VREFB VREFCVREFD LDAC RS VSS 12/10 FEATURES AD7398—12-Bit Resolution AD7399—10-Bit Resolution Programmable Power Shutdown Single (3 V to 5 V) or Dual ( 5 V) Supply Operation 3-Wire Serial SPI-Compatible Interface Internal Power ON Reset Double Buffered Registers for Simultaneous Multichannel DAC Update Four Separate Rail-to-Rail Reference Inputs Thin Profile TSSOP-16 Package Available Low Tempco 1.5 ppm/ C APPLICATIONS Automotive Output Voltage Span Portable Communications Digitally Controlled Calibration PC Peripherals GENERAL DESCRIPTION The AD7398/AD7399 family of quad, 12-bit/10-bit, voltage- output digital-to-analog converters is designed to operate from a single 3 V to 5 V or a dual ±5 V supply. Built with Analog’s robust CBCMOS process, this monolithic DAC offers the user low cost, and ease-of-use in single or dual-supply systems. The applied external reference VREF determines the full-scale output voltage. Valid VREF values include VSS < VREF < VDD that result in a wide selection of full-scale outputs. For multiplying applications ac inputs can be as large as ±5 VP. A doubled-buffered serial-data interface offers high-speed, 3-wire, SPI and microcontroller-compatible inputs using serial- data-in (SDI), clock (CLK), and a chip-select ( CS). A common level-sensitive load-DAC strobe ( LDAC) input allows simulta- neous update of all DAC outputs from previously loaded Input Registers. Additionally, an internal power ON reset forces the output voltage to zero at system turn ON. An external asynchro- nous reset ( RS) also forces all registers to the zero code state. A programmable power-shutdown feature reduces power dissipa- tion on unused DACs. Both parts are offered in the same pinout to enable users to select the appropriate resolution for their application without redesigning the layout. For 8-bit resolution applications see the pin compatible AD7304 product. The AD7398/AD7399 is specified over the extended industrial (–40 °C to +125°C) temperature range. Parts are available in wide body SOIC-16 and ultracompact thin 1.1 mm TSSOP- 16 packages. CODE – Decimal –0.50 0 512 0 –0.40 –0.30 –0.20 –0.10 0.10 0.20 0.30 0.40 0.50 1024 1536 2048 2560 3072 3584 4096 VDD = +5V VSS = –5V VREF = +2.5V TA = 25 C Figure 1. AD7398 DNL vs. Code (TA = 25 °C) |
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