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ADR420 Fiches technique(PDF) 1 Page - Analog Devices |
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ADR420 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 24 page Dual, Current-Output, Serial-Input, 16-/14-Bit DACs Data Sheet AD5545/AD5555 Rev. G Document Feedback 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 ©2003–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES 16-bit resolution AD5545 14-bit resolution AD5555 ±1 LSB DNL monotonic ±1 LSB INL 2 mA full-scale current ±20%, with VREF = 10 V 0.5 µs settling time 2Q multiplying reference-input 6.9 MHz BW Zero or midscale power-up preset Zero or midscale dynamic reset 3-wire interface Compact 16-lead TSSOP package APPLICATIONS Automatic test equipment Instrumentation Digitally controlled calibration Industrial control PLCs Programmable attenuator PRODUCT OVERVIEW The AD5545/AD5555 are 16-bit/14-bit, current-output, digital- to-analog converters designed to operate from a 4.5 V to 5.5 V supply range. An external reference is needed to establish the full-scale output-current. An internal feedback resistor (RFB) enhances the resistance and temperature tracking when combined with an external op amp to complete the I-to-V conversion. A serial data interface offers high speed, 3-wire microcontroller compatible inputs using serial data in (SDI), clock (CLK), and chip select (CS). Additional LDAC function allows simultaneous update operation. The internal reset logic allows power-on preset and dynamic reset at either zero or midscale, depending on the state of the MSB pin. The AD5545/AD5555 are packaged in the compact TSSOP-16 package and can be operated from −40°C to +85°C. FUNCTIONAL BLOCK DIAGRAM AD5545/ AD5555 VDD RFBA VREFB VREFA IOUTA AGNDA SDI CS CLK DGND MSB RS LDAC DAC A DAC A B D0..DX EN R R R R 16 OR 14 ADDR DECODE INPUT REGISTER POWER- ON RESET INPUT REGISTER DAC A REGISTER DAC B REGISTER RFBB IOUTB AGNDB DAC B 02918- 0- 001 Figure 1. |
Numéro de pièce similaire - ADR420 |
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Description similaire - ADR420 |
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