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AD5422 Scheda tecnica(PDF) 1 Page - Analog Devices |
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AD5422 Scheda tecnica(HTML) 1 Page - Analog Devices |
1 / 29 page Single Channel, 16-Bit, Serial Input, Current Source DAC Preliminary Technical Data AD5420 Rev. PrD Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other 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 ©2007 Analog Devices, Inc. All rights reserved. FEATURES 16-Bit Resolution and Monotonicity Current Output Ranges: 4–20mA, 0–20mA or 0–24mA 0.1% typ Total Unadjusted Error (TUE) 5ppm/°C Output Drift Flexible Serial Digital Interface On-Chip Output Fault Detection On-Chip Reference (10 ppm/°C Max) Asynchronous CLEAR Function Power Supply (AVDD) Range 10.8V to 60 V; AD5420BCPZ 10.8V to 40V; AD5420BREZ Output Loop Compliance to AVDD – 2.5 V Temperature Range: -40°C to +85°C TSSOP and LFCSP Packages APPLICATIONS Process Control Actuator Control PLC GENERAL DESCRIPTION The AD5420 is a low-cost, precision, fully integrated 16-bit converter offering a programmable current source output designed to meet the requirements of industrial process control applications. The output current range is programmable to 4mA to 20 mA, 0mA to 20mA or an over range function of 0mA to 24mA. The output is open circuit protected and can drive inductive loads of 1H. The device is specified to operate with a power supply range from 10.8 V to 40V (AD5420BREZ) or 10.8V to 60V (AD5420BCPZ). Output loop compliance is 0 V to AVDD – 2.5 V. The flexible serial interface is SPI and MICROWIRE compatible and can be operated in 3-wire mode to minimize the digital isolation required in isolated applications. The device also includes a power-on-reset function ensuring that the device powers up in a known state and an asynchronous CLEAR pin which sets the output to the low end of the selected current range. The total output error is typically ±0.1% FSR. Table 1. Related Devices Part Number Description AD5422 Single Channel, 16-Bit, Serial Input Current Source and Voltage Output DAC AD5412 Single Channel, 12-Bit, Serial Input Current Source and Voltage Output DAC AD5410 Single Channel, 12-Bit, Serial Input Current Source DAC |
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