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AD7399BR Datasheet(PDF) 1 Page - Analog Devices |
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AD7399BR Datasheet(HTML) 1 Page - Analog Devices |
1 / 24 page Quad, Serial-Input 12-Bit/10-Bit DACs AD7398/AD7399 Rev. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2000–2011 Analog Devices, Inc. All rights reserved. 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 Qualified for automotive applications APPLICATIONS Automotive output voltage span Portable communications Digitally controlled calibration PC peripherals FUNCTIONAL BLOCK DIAGRAM DAC A DAC A REGISTER INPUT REG A DAC B REGISTER INPUT REG B DAC C REGISTER INPUT REG C DAC D REGISTER INPUT REG D SERIAL REGISTER POWER ON RESET DAC D DAC C DAC B 12/10 CLK VOUTA VOUTB VOUTC VOUTD SDI VSS RS LDAC VREFC VREFD GND CS VDD VREFB VREFA AD7398/AD7399 Figure 1. GENERAL DESCRIPTION The AD7398/AD7399 family of quad, 12-bit/10-bit, voltage output digital-to-analog converters (DACs) is designed to operate from a single 3 V to 5 V supply or a dual ±5 V supply. Built with the Analog Devices, Inc. robust CBCMOS process, these monolithic DACs offer the user low cost with 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 simultaneous 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 asynchronous reset (RS) also forces all registers to the zero code state. A programmable power- shutdown feature reduces power dissipation on unused DACs. Both parts are offered in the same pinout, enabling 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 are specified over the extended industrial (−40°C to +125°C) temperature range. Parts are available in 16-lead, wide body SOIC and ultracompact, thin, 1.1 mm TSSOP packages. 0.5 –0.5 –0.4 –0.3 –0.2 –0.1 0 0.1 0.2 0.3 0.4 0 4096 3584 3072 2560 2048 1536 1024 512 CODE (Decimal) VDD = +5V VSS = –5V VREF = +2.5V TA = 25°C Figure 2. AD7398 DNL vs. Code (TA = 25°C) |
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